CA2730549C - Filter elements; air cleaner; assembly; and, methods - Google Patents

Filter elements; air cleaner; assembly; and, methods Download PDF

Info

Publication number
CA2730549C
CA2730549C CA2730549A CA2730549A CA2730549C CA 2730549 C CA2730549 C CA 2730549C CA 2730549 A CA2730549 A CA 2730549A CA 2730549 A CA2730549 A CA 2730549A CA 2730549 C CA2730549 C CA 2730549C
Authority
CA
Canada
Prior art keywords
filter element
air cleaner
construction
media
seal member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA2730549A
Other languages
French (fr)
Other versions
CA2730549A1 (en
Inventor
William J. Krisko
Wayne R. W. Bishop
Steven Scott Gieseke
Carolyn J. Finnerty
David W. Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donaldson Co Inc
Original Assignee
Donaldson Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=28795010&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2730549(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Donaldson Co Inc filed Critical Donaldson Co Inc
Priority to CA2869643A priority Critical patent/CA2869643A1/en
Publication of CA2730549A1 publication Critical patent/CA2730549A1/en
Application granted granted Critical
Publication of CA2730549C publication Critical patent/CA2730549C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/525Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/04Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002Casings; Housings; Frame constructions
    • B01D46/0005Mounting of filtering elements within casings, housings or frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002Casings; Housings; Frame constructions
    • B01D46/0015Throw-away type filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0095Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/4227Manipulating filters or filter elements, e.g. handles or extracting tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/525Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
    • B01D46/527Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes in wound arrangement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20Combinations of devices covered by groups B01D45/00 and B01D46/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2265/00Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/06Details of supporting structures for filtering material, e.g. cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2267/00Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/40Different types of filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2271/00Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02Gaskets, sealings
    • B01D2271/022Axial sealings
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining

Abstract

A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.

Description

FILTER ELEMENTS; AIR CLEANER; ASSEMBLY; AND, METHODS

Technical Field The present disclosure relates to filter constructions for filtering fluids, such as liquids or gases. This particular disclosure concerns: straight through flow filter elements; safety filter elements; assemblies employing such elements;
precleaners;
and methods for using, and assembly of, such filter elements.

Background Straight through flow filter elements have been used in various systems for filtering fluids such as gases or liquids. Straight through flow filter elements typically have an inlet face (or end) and an oppositely disposed outlet face (or end).
During filtering, the fluid to be filtered flows in one direction upon entering the filter element at the inlet face, and has the same general direction of flow as it exists the outlet face. Typically, a straight through flow filter element is installed in a housing, for use. After a period of use, the filter element requires servicing, either through cleaning or complete replacement of the filter element. A seal is necessary between the element and a portion of the housing in which the element is placed in use, to ensure proper filtering of the fluid flow through the arrangement.
Improvements in straight through flow filter elements, their assembly and their use are desirable.

Summary According to the present disclosure a filter element is provided. The filter element in general has a straight through flow construction and comprises z-filter media. The filter element includes a seal gasket.
The current disclosure also concerns air cleaner assemblies. In general the air cleaner assembly includes a housing comprising a cover and a primary air cleaner section. A primary filter element is positioned within the housing such that an axial seal or pinch seal gasket thereon is positioned between the cover and the primary air cleaner section. In certain preferred arrangements, the cover comprises a precleaner, preferably including a plurality of cyclonic air separators therein and a dust ejector thereon.
In certain preferred embodiments the primary air filter, within the housing, has a race track shape.
The current disclosure also concerns safety elements.
Methods of assembly and use are also provided.

Brief Description of the Drawings FIG. 1 is a side perspective view of an air cleaner arrangement according to the present disclosure;
FIG. 2 is an exploded, perspective view of the air cleaner arrangement depicted in FIG. 1, the precleaner, primary filter element, and safety filter element being viewable;
FIG. 3 is an inlet end view of the air cleaner arrangement depicted in FIG. 1;
FIG. 4 is a cross-sectional view of the air cleaner arrangement depicted in FIG. 1, the cross-section being taken along the line 4-4 of FIG. 3;
FIG. 5 is a schematic, perspective view of Z-media, a type of media usable in the primary filter element, according to the present disclosure;
FIG. 6 is an inlet end view of the primary filter element viewable in FIG 2;
FIG. 7 is a cross-sectional view of the primary filter element of FIG. 6, the cross-section being taken along the line 7-7 of FIG. 6;
FIG. 8 is an enlarged fragmentary view showing an interaction between a gasket member mounted on the primary filter element and structural members on certain housing components;
FIG. 9 is a fragmentary, cross-sectional view of an alternate embodiment of a gasket member usable herein;
FIG. 10 is an enlarged, fragmentary view analogous to the view shown in FIG. 8, but depicting the alternate gasket arrangement shown in FIG. 9;
Fig. 11 is a perspective view of a safety filter element usable in the air cleaner arrangement depicted in FIG. 2;
FIG. 12 is a longitudinal cross-sectional view of the safety filter element depicted in FIG. 11;
FIG. 13 is an end view of the safety filter element of FIG. 11;
FIG. 14 is a side elevational view of the safety filter element depicted in FIG.
11;
FIG. 15 is a perspective view of the primary filter element and safety filter element while engaged with each other;
FIG. 16 is a perspective view showing the primary filter element and safety filter element engaged with each other, from an opposite perspective from that of FIG. 15;
FIG. 17 depicts a side elevational view of the primary filter element and safety filter element engaged as shown in FIGS. 15 and 16;
FIG. 18 is a top plan view of the filter elements depicted in FIG. 17;
FIG. 19 is a bottom plan view of the arrangement of FIG. 17;
FIG. 20 is a cross-sectional view of the primary filter element and safety filter element interacting, the cross-section being taken along the line 20-20 of FIG.
18;
FIG. 21 is a side-elevational view of the primary filter element and safety filter element engaging; and FIG. 22 is a cross-sectional view of the arrangement of FIG. 21, the cross-section being taken along the line 22-22 of FIG. 21.
Detailed Description A. Overview In general, the techniques described herein are applicable to fluid cleaners.
There are generally two classes of fluid cleaners with which the techniques can be applied, namely liquid cleaners and gas cleaners. The embodiment depicted is specifically of an air cleaner (i.e., a type of gas cleaner), and thus the features will be described in this context. Applicability of the principles and techniques described to liquid cleaners or to cleaners of other gases, will be apparent from the general descriptions.
Reference numeral 1, FIG. 1, indicates an air cleaner arrangement according to present disclosure. The air cleaner arrangement 1 generally comprises: a housing 2, an outlet flow duct 3, and a dust ejector 4. In general, the air cleaner arrangement 1 also includes, within the housing 2, as described below, a serviceable (primary) filter element component and an optional, serviceable safety (or secondary) filter element component. Herein the term "primary" when used to refer to a filter element, is meant to refer to a filter element which conducts majority of the filtering within the assembly. In this instance by "filtering" what is meant is removal of particulate material by passage of fluid flow through media. The term "serviceable"
in this context is meant to refer to a filter element that is configured to be periodically removed and replaced. (That is, the air cleaner can be serviced by removing one element and installing another.) Safety element or secondary element helps to protect downstream components of the equipment on which the air cleaner assembly 1 is installed, in case of failure of the primary element.
Still referring to FIG. 1, in general the air cleaner 1 depicted is a preferred two-stage air cleaner having a cover 7, in this instance a precleaner section 8, and a primary air cleaner section 9. The particular housing 2 depicted is jointed between the cover 7 and the primary air cleaner section 9, at joint or region 11. At housing joint 11, the cover 7 and the primary air cleaner section 9 can be opened or separated, for access to an internally received filter element component, for servicing. This is described in greater detail below. Herein a step of pivoting, or in some instances even removing, a housing cover 7 relative to the primary filter element containing section 9, will be referred to as obtaining service access to an internally-received filter element component, or alternatively as "opening"
the air cleaner 1, for example for servicing.
In general, air to be filtered enters air cleaner assembly 1 at end 12, by passage into individual cyclonic or centrifugal separators 13, in precleaner 8.
Separators of the type usable at reference 13 could be conventional, and a variety of types may be used, for example those in U.S. Patents 4,242,115 and 4,746,340.
However, the particular precleaner 8 shown can lead to advantages. Within the separators 13, a first stage dust separation or precleaning occurs, and dust separated at this location is ejected from the precleaner 8 through dust ejector 4, in particular through ejector tube 14 and ejector valve 15. Of course, the process conducted in the precleaner 8 is not "filtering" as the tern was defined above, since the dust separation in the precleaner results from a centrifugal or cyclonic process, as opposed to a process of passing the fluid through a media. The particular precleaner 8 shown is described in Section D below.
Air that is passed out of the precleaner 8, into the primary air cleaner section 9, is then passed through an internally received primary filter element, described in Section B below, through optional safety element (described in Section C
below), and eventually into a clean air region for exiting through clean air outlet duct 3.
From duct 3, the clean air can be directed to whatever equipment is downstream, for example an engine air intake of an internal combustion engine.
Referring to Figs. 1 and 2, in general cover 7 is pivotally secured on primary air cleaner section 9 by supports 16 and over center clamps 17. Once the over center clamps 17 are released, the cover 7 can be opened relative to the primary air cleaner section 9 of housing 2, by pivoting the cover 7 (or precleaner 8) relative to the support 16. Alternately, the system can be configured for complete separation of the cover 7 during opening.

Referring to FIG. 1, the assembly 1 can be mounted on various machinery parts by mounting pads 19, for example using bolts. In general, air cleaner 1 will be mounted with ejector tube 14 and dust ejector 15 directed generally downwardly, to facilitate dust ejection.
Attention is now directed to FIG. 4, which is a cross-sectional view of the assembly 1 depicted from the view point of line 4-4, FIG. 3. Referring to FIG.
4, precleaner 8 is shown mounted on primary air cleaner section 9, with internally received primary filter element 22 depicted and internally received safety filter element 20 depicted.

B. Usable Primary Filter Elements The filter element 22 is configured to permit straight through flow; that is, it has a straight through flow construction. By the term "straight through flow,"
in this context, it is meant that the fluids which flow to the filter element 22, for filtering, enter the filter element 22 at inlet end or face 23 in a first direction and exit from opposite outlet end or face 24 with flow in the same general direction. The term "straight through flow" as characterized above, is meant to specifically differentiate a flow in a system such as that described in WO 89/01818 published 9 March 1989, in which air enters a cylindrical pleated filter member by direction against a cylindrical surface, and then exits the element (for example through an aperture) after making an approximately 90 turn.

The filter element 22 includes a filter construction having an outer sidewall or surface 25 and comprising filter media 26 that is configured to filter particulates from a gas stream entering the inlet end or face 23, such that the gas stream exiting the outlet end or face 24 is at least partially clean (i.e., free of particulates). As can also be seen from FIG. 2, the filter element 22 also includes a gasket or seal member 28 which aids in inhibiting leakage between the filter element 22 and portions of the housing 2 in, which the filter element 22 is installed. The preferred gasket extends completely, peripherally, around the outer sidewall 25 of the straight through flow construction or element 22.
Preferred filter media 26 usable in the primary element 22 of air cleaner arrangement 1 is a type of media, described below, generally referred to as "z-media" or "z-filter media." Z-filter media generally comprises a corrugated or pleated media sheet secured to a non-corrugated facing sheet. The media is arranged to form a set of longitudinal flutes or air flow channels on one side of the corrugated or fluted media, and another set of flow channels on an opposite side of the media.
In operation, flutes of one set of flutes are designated as inlet flutes, are left open at an inlet end or side of the media, and are sealed or otherwise folded closed at an outlet end or side of the media. Analogously, the flutes of a second set of flutes are generally designated as outlet flutes, are sealed or otherwise closed at the outlet end or side of the filter, and are left open at the outlet end or side of the filter. In operation, air passes into one flow face of the air filter construction, by passage into the open inlet flutes at an upstream end of the element. The air cannot flow out of the closed ends of these inlet flutes, so it must pass through the filter media into the outlet flutes. The filtered air then passes outwardly from an exit end of the filter element, through the open ends of the outlet flutes.

A variety of shapes, i.e., outer perimeter configurations, for the primary filter element 22 can be used. The particular one used the arrangement of the drawings, is an "obround" or "race track" shape. Its definition will be understood by reference to FIG. 6, which depicts the element. Referring to FIG. 6, the shape has first and second opposite, generally parallel, straight sections 38, 39, with opposite rounded (typically semicircular) end sections 40, 41. Alternative configurations include, for example, oval and circular.

Referring to FIG. 5, in general, the filter media-2 6 is a coiled two-layered construction 45, formed from a flat (non-corrugated) sheet 46 secured to a corrugated sheet 47. In general, on one side 48 of the corrugated sheet 47 a first set of flutes 49 is formed; and on an opposite second side 50, a second set of flutes 51 is formed. In FIG. 5, edge 53 would correspond to inlet face 23, FIG. 2; and, edge 54 would correspond to outlet face 24, FIG. 2. The phantom lines in FIG. 5, indicate where and how the two-layered construction 45 has come back around itself, as a result of the coiling; the solid lines being an outer layer of the two layers depicted.
In alternate embodiments, the filter media can be a stacked construction instead of coiled. Stacked constructions include a plurality of a flat sheet 46 secured to a corrugated sheet 47 stacked on top of each other.

The first set of flutes 49 would be sealed adjacent edge 54 by a sealant bead, or similar structure, not shown. The second set of flutes 51 is sealed adjacent to the first edge 53 by sealant bead 55, as indicated.

From review of FIGS. 2 and 5, it should be apparent how the media 26 functions. In general the first set of flutes 49 are open at inlet face 23, and thus comprise inlet flutes. They would be closed at their exit ends 54, as a result of a sealant bead or similar closure at this location. Thus air which enters flutes 49 at the inlet edge 53 must pass through the media 26 to escape from the inlet flutes 49.
Upon passage through the media, filtering occurs and fluid flow enters a second set of (outlet) flutes 51, at a location downstream from the sealant 53. Outlet flutes 51 are open along edge 54, and thus the filtered fluid stream can flow out of the media 26. This type of construction is generally characterized herein as z-filter media.
The z-filter media can include a plurality of flutes; each of having an upstream portion adjacent to an inlet flow face and a downstream portion adjacent to an outlet flow face; selected ones of the flutes being open at the upstream portion and closed at the downstream portion; and selected ones of the flutes being closed at the upstream portion and open at the downstream portion.

A variety of corrugation shapes and sizes can be utilized in the filter media 26. Examples include: corrugations resulting in a straight flutes, in which the flutes are parallel to each other and do not change shape from one end to other;
straight flutes having crushed or pinched ends; and tapered flutes, in which inlet flutes gradually converge from a wide end in direction to a narrow end with adjacent exit flutes diverging from a narrow end to a wide end, in the same direction.
Various z-filter media configurations are described in the following references:
1. Standard flutes are depicted in U.S. 5,820,646; and U.S. 5,895,574.
2. Tapered flutes, flutes with crashed ends and other variations in flute shapes are described in WO 97/409 18, published November 6, 1997.

Referring again to FIG. 2, the (primary) filter element 22 is serviceable. By the term "serviceable" in this context, it is meant that the filter element 22 can be removed from the air cleaner assembly 1, and either be refurbished or replaced. In typical systems, the filter element 22 is periodically replaced, during a servicing operation, by installation of a new element.

In general, the filter element 22, FIG. 7 comprises three components: the main body or straight through flow construction 55, primarily comprising media 26;
a centerpiece, core 57, or other framework structure attached to the media 26;
and, seal or gasket member 28. The seal member 28 is generally positioned to completely circumscribe the main body or construction 55, preferably adjacent to, i.e., within 10 min of and preferably within 5 mm of, inlet face 23.

It is noted that in the figures, the main body or straight through flow construction 55 of the filter element 22 is shown schematically, in the cross sections.
That is, flute detail is not depicted. As to flute detail, it is not shown in any figures other than the example of FIG. 5 and a portion of FIG. 15, for convenience. As indicated previously, a variety of flute shapes can be used. Examples depicting the ends of a z-filter element, and sealing at those ends, are provided in the drawings of U.S. Des. 396,098; U.S. 6,190,432; U.S. Des. D450,827; U.S. 6,235,195; U.S.
D437,402 and U.S. D450,828, Still referring to FIG. 7, in general the main body (or straight through flow construction) 55 of the filter element 22 has an outer surface 56 which generally either comprises a portion of the flat (i.e., non-corrugated) sheet 46 used to form the coiled construction 45; or, some outer sheet or cover placed around the media 26.
Referring still to FIG. 7, the seal member or pinch seal or axial seal gasket 28, shown in cross-section, includes the following features: mounting aperture (FIG. 8); and, axial seal region 61 (FIG. 7). The mounting aperture 60 includes inner pocket 63, by which the seal member 28 is secured to framework 58.

The axial seal region 61 is positioned to be compressed axially between two housing portions. For the particular air cleaner assembly 1 depicted, these two housing portions comprise cover 7 and primary air cleaner section 9. Referring to FIG. 8, in particular, the compression occurs between peripheral end flange 70 on precleaner 8; and peripheral end flange 71 on primary air filter cleaner section 9.
The compression of the seal member 28 at this location is referenced as "axial"
because of the direction of compression. In this context, the ternis "axial,"
"axial direction of compression" and variants thereof, are meant to refer to a compression that occurs as a result of compressive forces directed in the same direction as a direction directly from the inlet face 23 to the outlet face 24.
Referring now to FIG. 7, axial seal member 28 generally includes first and second opposite sides 75, 76 and outer annular surface 77. Also preferably, referring to FIG. 8, gasket 20 includes the mounting aperture 60. The aperture includes the pocket 63. The pocket 63 receives part of the framework 58 to secure the gasket 28 to the main body 52. In the embodiment depicted in FIG. 8, the pocket 63 includes a channel 88. The channel 88, in the embodiment shown, is bisected by the center axis 94 of the gasket 28. As such, in the preferred embodiment, the gasket 28 is symmetrical about the axis 94, including being symmetrical about the center of the channel 88. The pocket 63 allows for the gasket 28 to be secured to and "locked" to the framework 58.

Referring now to FIGS. 6 - 8, one embodiment of the framework 58 is depicted. In the embodiment shown, the framework 58 includes a frame member 96 that functions to secure the gasket 28 to the main body 52. The frame member includes a band 98 (FIG. 8) forming a ring 100 (FIG. 6) that extends completely, peripherally, around the main body 52. Extending from the frame member 96 is a projection 102 (FIG. 8). The projection 102 preferably extends completely, peripherally around the straight through flow construction 52. The projection receives the gasket 28. In particular, the projection 102 extends into and is received in a "snugged fashion" by the pocket 63.
WO 03/084641 PC:T/US03/10258 Still in reference to FIG. 8, the frame member 96 includes a lip 108 extending radially inwardly from the band 98. The lip 108 hooks over the outer peripheral edge 109 of the main body 52. As such, the lip 108 is an extension over at least a portion of the inlet end 23 of the filter element 22. The lip 108 helps to secure the frame member 96 to the main body 52. The lip 108 is on one end 110 of the band 98.
On an opposite end 112 of the band 98, the band 98 includes a tapered section 114. The tapered section 114 helps to allow for ease of assembly of securing the frame member 96 to the main body 52. In particular, in preferred embodiments, during assembly, the gasket 28 will be secured to the frame member 96 by pressing the gasket ring 28 on to the frame member 96. This is done by pressing the pocket 63 of the gasket 28 over the projection 102, until the gasket 28 is operably mounted onto the frame member 96. Typically, the gasket ring 28 will stretch somewhat to be fitted over the frame member 96, and once properly seated onto the projection 102, will be in tension to be tightly secured to the frame member 96.
The combination gasket 28 and fame member 96 is then mounted onto the main body 52. This is done by placing the frame member 96 over the inlet end 23.
The tapered section 114 allows this gasket 28/frame member 96 combination to be mounted over the main body 52 without damaging the inlet end 23. The tapered section 114 helps to seat the frame member 96 in place over the inlet end 23.
Preferably, the frame member 96 is secured to the main body 52 with an adhesive between the band 98 and the outer surface 56 of the main body 52. The tapered section 114 also helps to hold any excess adhesive when mounting the band 98 onto the main body 52. This helps to minimize any unsightly appearance of excess glue being squeezed out from between the band 98 and the main body 52.
Still in reference to FIGS. 6 and 7, the preferred frame member 96 also includes a cross-brace construction 122. The cross-brace construction 122 helps to provide structural integrity and overall strength to the filter element 22 in the region of the gasket member 28. It also can help to prevent "telescoping" of the filter media 26. Telescoping could occur when the media is coiled by having adjacent layers extend out further over other layers. The cross-brace construction 122 can help to prevent such telescoping. In the particular embodiment shown, the cross-brace construction 122 includes three braces 124, 125, 126 in extension from the lip 108 and extending over the inlet end 23. The cross-brace construction 122, in WO 03/084641 PCT/tJS03/10258 combination with the other features, also contributes to an attractive, ornamental appearance.

It is anticipated that such a configuration for gasket 28, can be used with a variety of sizes of elements 22. Typical arrangements will be elements on the order of 10 cm to 60 cm long (in dimension between inner surface 23 and outer surface 24), and 10 cm to 50 cm wide (diameter if circular; longest dimension if race track, obround or oval).

1. Alternate Embodiment of Gasket and Frame Member Referring now to FIGS. 9 and 10, an alternate axial seal member 28' is depicted. Seal member 28' generally includes first and second opposite sides 75', 76' and outer annular surface 77'. Preferably the configuration of the gasket 28' is such that on each side 75, 76there is a corresponding projection, knob, or rib 85, 86' formed. Preferably each of ribs 85', 86' is continuous, i.e., extends continuously around the straight through flow construction 52.
The projection 102' on the framework 58, in preferred embodiments, has a shape that corresponds to the shape of the pocket 63. As such, the projection 102' includes a stem 104' and a head 106'.

The gasket 28' will be secured to the frame member 96' by pressing the gasket 28' on to the frame member 96'. This is done by pressing the pocket 63' of the gasket 28' over the projection 102', until the gasket 28' is operably mounted onto the frame member 96. Typically, the gasket 28' will stretch somewhat to be fitted over the frame member 96', and once properly seated onto the projection 102', will be in tension to be tightly secured to the frame member 96'.

A number of advantages result from utilizing gasket arrangements 28 and 28' such as those described above. For example:

1. Because the gasket 28 is located at adjacent inlet end 23, region 118, FIG. 4, i.e. the space between the element 22 and housing 9 is a clean air region.
This means dust will not collect in this region, to advantage. The result for example is not likely to have significant dust contamination in the clean air region 32, during cleaning.

2. Because gasket 28 is axial, there is no need to provide a substantial dimension of extension of the gasket between the element body 52 and the inside surface 120 of housing 9, FIG. 4. This means that the dimension of spacing in region 118 between the wall 10 and the body 52 can be relatively small, the order of mm or less, typically 6 nun or less, preferably 2 mm or less.

5 A variety of materials for the filter media 26 are possible. One usable media 26 comprises cellulose media with the following properties: a basis weight of about 45-55 lbs./3000 ft2 (84.7 g/m2), for example, 48-54 lbs./3000 ft2; a thickness of about 0.005-0.015 in, for example about 0.010 in. (0.25 mm); Frazier permeability of about 20-25 ft /min, for example, about 22 ft/min (6.7 m/min); pore size of about 10 55-65 microns, for example, about 62 microns; wet tensile strength of at least about 7 lbs/in, for example, 8.5 lbs./in (3.9 kg/in); burst strength wet off of the machine of about 15-25 psi, for example, about 23 psi (159 kPa). The cellulose media can be treated with fine fiber, for example, fibers having a size (diameter) of 5 microns or less, and in some instances, submicron. A variety of methods can be utilized for application of the fine fiber to the media. Some such approaches are characterized, for example, in U.S. Patent 5,423,892, column 32, at lines 48-60. More specifically, such methods are described in U.S. Patent Nos. 3,878,014; 3,676,242;
3,841,953;
and 3,849,241. If fine fiber is used, one application would be to apply enough fine fiber until the resulting media construction has the following properties: initial efficiency of 99.5% average, with no individual test below 90%, tested according to SAE J726C, using SAE fine dust; and an overall efficiency of 99.98% average, according to SAE J726C.

2. Core Construction In reference now to FIGS. 6, 7, 20, and 22, a usable core construction 57 is shown. The core construction 57 is utilized to support the media 26 and to help provide the desired resulting outer shape for the primary element 22. As will be explained below, the filter media 26 can be configured to define a receiving socket 130 to help center the filter element 22 when orienting the element 22 in the air cleaner 9. The receiving socket 130 defined by the media 26 in the primary element 22 can be used to align with a projection extending from the interior of the air cleaner housing 2. In particular preferred embodiments, the projection will be part of the safety element 20. This is explained further below, in Section C(2).

A variety of core constructions 57 are usable. The particular one illustrated can be used to advantage. In the core construction 57 that is shown, the core construction 57 is usable to help support the receiving socket 130. In particular, in the one depicted, the core construction 57 includes a non-cylindrical member 132.

In FIG. 22, the member 132 includes at least one region of opposing walls 134, defining an open volume 136 therebetween. The open volume 136 functions as an open receiver 138. In the preferred configuration shown, the receiver 138 aligns and supports the receiving socket 130 defined by the media 26. In the one shown, each of the receiving socket 130 and the receiver 138 is non-cylindrical. By the term "non-cylindrical", it is meant that the cross-section does not form a circle.
Rather, the cross-section is non-circular. In the preferred embodiment shown, the cross-section of the receiving socket 130 and the receiver 138 is elongated, with the opposing walls 134, 135 defining-a gap of not more than 20 mm., at least greater than 2 mm., and typically 3 - 12 mm. therebetween. The opposing walls 134, 135 are joined by curved ends 140, 141, as can be seen in FIG. 6.
The core construction 57 illustrated includes structural molding 144 (FIG. 7) for providing strength. The preferred embodiment also includes a molded plug to ensure that fluid to be filtered cannot leak by passage between the walls 134, 135 of the core 57. The molding 144 further includes, in the particular preferred embodiment illustrated, centering structure 150. In the embodiment illustrated in FIG. 7, the centering structure 150 has an apex 152 that is located about midway between the ends 140, 141 of the core construction 57. The centering structure will interact with projections in the housing 2 to help align and center the filter element 22 when installing the element into the air cleaner 1.
In the preferred embodiment, the centering structure 150 divides the receiver 138 into first and second receiving pockets 164, 166. The receiving pockets 164, 166, in the preferred embodiment, each receive a projection to assist with centering and properly aligning the primary element 22 in operable orientation in the air cleaner 1.

In many usable embodiments, the distance between the ends 140, 141 of the core construction 57 is not greater than 24 cm., at least 5 cm., and typically cm.

Preferred core constructions 57 can also include at least one corrugated region 154 (FIG. 20) molded as part of the wall 134. The corrugated region 154 includes at least one, and preferably 2 - 10 corrugations 156 that match the corrugation of the corrugated sheet 47 of the media 26 (FIG. 5). Preferred core constructions 57 include two corrugated regions 154, 158. The second corrugated region 158 also includes at least two corrugations 159. The corrugated regions 154, 158 assist iii manufacturing of a coiled construction, resulting in the primary element 22. To make the coiled construction, the corrugated side of the filter media 26 is aligned with the corrugated regions 154, 158. The media 26 is then wound around or coiled around the core construction 57. The media 26 is secured to the core construction by using, for example, an adhesive bead at regions 160, 161 between the core constructions 57 and the media 26.

In some embodiments, the primary filter element 22 is covered by an outer protective wrap covering the outer sidewall 25.

C. Usable Safety Elements 1. Example Embodiment, FIGS. 11 - 14 In reference now to FIGS. 11 - 14, an embodiment of a usable safety element 20 is illustrated. In preferred systems, the safety element 20 is oriented in the air cleaner I downstream of the primary filter element 22 in order to protect downstream components from debris that could get passed the primary filter element 22, in case of failure of the primary filter element 22. In addition, the safety element 20 helps to protect the engine while servicing the air cleaner 1 while preventing debris from falling into the clean. air region 32.

The safety filter element 20 has an outside periphery 170 that preferably matches the outside periphery of the primary filter element 22. In the embodiment illustrated, the safety element 20 is obround or racetrack shaped, but can be other shapes such as circular. The racetrack shape of the safety element 20 includes a pair of straight sides 172, 173, joined by a pair of rounded or curved ends 174, 175.
In the illustrated embodiment, the safety element 20 includes a rigid, structural frame 178. Forming a portion of the frame 178 is a skirt or band 180. The band 180 circumscribes an internal region of filter media 184. A variety of types of media 184 can be utilized. In the configuration shown, the media 184 is pleated, with the pleats 185 extending between the straight sides 172, 173. Usable configurations include at least 10 pleats, no greater than 50 pleats, and typically 15 -30 pleats. This can correspond to pleat densities of at least two pleats per inch, and typically 3 - 8 pleats per inch. In FIG. 11, it can be seen how there are two regions of pleats 186, 187. The first pleat region 186 is separated from the second pleat region 187 by a partition 188 of the frame 178 that generally bisects the safety element 20. The bisecting wall 188 extends longitudinally along the safety filter element between curved end 174 and curved end 175.
In the preferred embodiment, the safety filter element 20 includes a handle 190 that is sized to accommodate at least a portion of a human hand. By "sized to accommodate a portion of a human hand", it is meant that the handle 190 has structure between it and the remaining portion of the safety element 20 that allows at least a part of hand (a finger or fingers) to fit between the handle structure and the remaining portion of the safety element 20 to allow for manipulation of the safety filter element 20.

In the embodiment shown, the safety filter element 20 includes the handle 190 projecting from the frame 178. In preferred embodiments, the handle 190 is an integral extension of the partition 188. A variety of handle constructions 190 are usable. In the one shown, the handle 190 has at least one projection 192 extending from the frame member 189. The projection 192 can take various configurations, including knobs, rings, extensions, etc. In the one shown, the projection 192 takes the form of an arm 194 defining a void 196. In preferred embodiments, the void goes completely through the arm 194.

In particular preferred embodiments, the handle 190 includes a second projection 198. The second projection 198 can also take a variety of shapes or configurations. In the one shown, the projection 198 has the same shape as projection 192, in the form of an arm 202 having a void 204 therebetween.
The sizes of the voids 196, 204, in preferred embodiments, are large enough to accommodate a gloved finger of a human hand, to assist with manipulation of the safety element relative to the air cleaner 1. For example, the voids 196, 204 define a cross-sectional area of at least 2 cm2, typically 4 - 100 sq. cm2. The projections 192, 198 are separated from each other by a landing 206 in the partition 189.

In preferred uses, the volume 205 defined by the landing 206 and the inner sides 207, 208 of each projection 192, 198 accommodates the apex 152 (FIG. 7) of the centering construction 150 of the core 57. In such preferred uses, the projections 192, 198 operate as guides 212, 214 to help operably orient the primary filter element 22 in place in the air cleaner 1. The guides 212, 214, along with the centering structure 150 help to center and place the filter element 22 within the air cleaner 1. This is explained further below in Section C(2).
Still in reference to FIGS. 11 - 14, the preferred safety element 20 includes a seal member 218 to help form a seal 220 (FIG. 4) between the safety element 20 and the air cleaner section 9 of the housing 2. In the one shown, the seal member 218 is secured to the band 180 around the entire periphery of the band 180. The seal member 218, in the one shown, forms a radially directed seal 221 (FIG. 4) between and against the band 180 and the-inside surface 120 of the air cleaner section 9 of the housing 2. The seal member 218 includes at least one step 224 to assist with installation and removal of the safety element 20 into the region 32 (FIG. 4).
The safety filter element 20 can also be useful in preventing telescoping of the filter media 26 from the primary filter element 22. The air flow pressure as it flows downstream may create a force on the element 22 urging it to telescope.
The safety filter element 20, when arranged adjacent to the downstream end 24, can help to prevent media telescoping.
Useful media 184 can include many different types of conventional filter media. This includes cellulose, synthetic, and various blends. One usable, convenient media is a synthetic/glass fiber blend having a weight of 70 + 4.0 lb./3,000 ft.2 (114+6.5 g/m2); a thickness of 0.032 + 0.003 in (0.81 + 0.08 mm); a Frazier permeability of 165 + 20 ft./min. (50.3 + 6.1 m/min.); a pore size of 100 + 8 microns; a dry tensile strength of 19.8 + 6.6 lb./in (9.0 3 kg/in); and a burst strength of 20 + 5 psi (138 + 34 kPa).

2. AligningLCentering Features With Primary Filter In reference now to FIGS. 15 - 22, the interaction between the primary filter element 22 and the safety filter element 20 is illustrated. As discussed above, the primary filter element 22 defines a receiving socket 130 formed by a void in the media 26 when formed into the filter element 22. The receiving socket 130 functions to receive guide structure or centering structure to help properly mount the filter element 22 within the air cleaner 1. The guide or centering structure can include many different types of projections extending from internally within the air cleaner 1. In the particular preferred configuration shown, the guide or centering structure is part of the safety element 20. In particular, the guide or centering structure is embodied herein as guides 212, 214, which, are preferably also part of the handle 190 for the safety filter 20. It should be appreciated that, although the guides 212, 214 are shown as part of the safety element 20, in other embodiments, there can be other types of projections or guides within the air cleaner 1.
Also as described above, in the preferred embodiment, the receiving socket 130 is aligned with core construction 57 defining receiver 138.
In FIGS. 20 and 22, the guides 212, 214 can be seen projecting into and received by the receiving socket 130 and the receiver 138 of the core 57. The apex 152 of the centering structure 150 can be seen extending between each of the guides 212, 214 and toward the landing 206 in the volume 205 (FIGS. 12 and 14) defined by the sides 207, 208 and landing 206.
In use, after the safety element 20 is properly installed within the air cleaner 1, the primary filter element 22 is inserted into the air cleaner section 9 of the housing 2. The opening of the receiver 138 is aligned with the guides 212, 214. The guides 212, 214 enter the receiver 138 into the receiving pockets 164, 166 (FIG. 7).
The filter element 22 is aided in proper orientation by interaction between the apex 152 of the centering structure 150 and the guides 212, 214. The filter element 22, in preferred embodiments, is oriented so that the gasket 28 rests against the flange 71 of the air cleaner section 9 of the housing 2. The cover 7 containing the precleaner section 8 is then oriented over the end of the air cleaner section 9 of the housing and clamped closed. The clamping action causes compression of the gasket 28 between the flange 70 and the flange 71 to create a seal therebetween.

Each of the primary filter element 22 and the safety filter element 20 is removable and replaceable. Preferred methods for servicing are described below.

D. Usable Precleaner Constructions Attention is now directed to FIGS. 2 - 4, a preferred precleaner section 8 is illustrated. While a number of different, conventional precleaners can be used upstream of the primary filter element 22, the particular precleaner 8 illustrated can be used to advantage.

As mentioned above, the precleaner 8 includes a plurality of centrifugal separator tubes 13. Each of the tubes 13 include an outer surrounding substantially cylindrical wall 228 that is tapered between opposite ends 229, 230. The end has a smaller diameter than the end 230. The end 229 will be oriented upstream to the end 230. Located within the wall 228 is a vortex generator 232, including vanes or curved blades 234. The wall 228 also includes at its downstream end 230 an outlet port 236.

Each of the tubes 13 is received within an upstream baffle plate 238. The baffle plate 238 includes a plurality of apertures 240 sized to receive the upstream end 229 of the tubes 13. The upstream end 229 of each of the tubes has a tab (FIG. 3) that is received within a slot 244, which is part of the aperture 240. This tab/aperture forms an indexing arrangement 246 (FIG. 3) that ensures that each of the outlet ports 236 on each of the tubes 13 is pointed in the direction toward the dust ejection tube 4.

The preferred precleaner 8 depicted also includes a plurality of extraction tubes 250 that are received within the tubes 228. In preferred implementations, each of the extraction tubes 250 is molded as an integral part of the cover 7. As such, in preferred embodiments, the cover 7 includes as an integral, molded, one-piece member: the side wall 252, the tube 14, a downstream baffle plate 254, and each of the extraction tubes 250.

To assemble the precleaner 8, each of the tubes 228 is inserted into a corresponding aperture 240 in the baffle plate 238. The indexing arrangement 246 is used by aligning the tab of each of the tubes 228 into a corresponding slot 244 to ensure that the outlet port 236 is pointed in a direction toward the ejector tube 4.
The upstream baffle plate 238 with each of the tubes 228 installed therewithin is then oriented over the remaining portion of the precleaner 8. Each of the ends of the tubes 228 is oriented over a corresponding extraction tube 250, and the baffle plate 238 is secured, such as by a snap fit, onto the side wall 252.

The precleaner S operates as follows: a gas flow stream containing particulate matter flows through the upstream end 229 of each of the tubes 13.
The flow is induced to rotate by the vortex generator 232. The rotating nature of the flow stream causes centrifugal forces to act on the particulate matter in the gas flow stream. The particulate matter are heavier than the gas in the flow stream and migrates toward the wall 228.
The particles are ejected from the outlet ports 236, while the remaining gas stream flows through the extraction tubes 250. From the extraction tubes 250, the air flows downstream and into the upstream flow face 23 of the primary filter element 22.
The particulate matter that is ejected from the outlet ports 236 falls by gravity downwardly through the ejection tube 4 and out through the ejection valve 15.

E. Methods In general, a method of sealing a filter element having a straight through flow construction, as described, is provided. The preferred method generally includes positioning opposing flanges of a cover and a primary air cleaner section, as described, in engagement with the projecting axial seal gasket (on the element) and axially compressing the gasket, as shown.

A method for mounting a sealing gasket on a filter element having a straight through flow construction, as described, is provided. One example method generally includes providing a filter element having a straight through flow construction.

In one example method, a gasket is extruded, cut to length, and then glued together to form a gasket ring. In other usable methods, a gasket is made from a moldable material, such as urethane foam and molded into a desired shape. The gasket ring is then snapped over and pressed onto a frame member.
Specifically, the projection 102 is squeezed into the pocket 63. Adhesive is placed on the outer surface 56 of the main body 52 adjacent to the inlet end 23. The gasket 28/frame member 96 assembly is then mounted onto the main body 52 over the inlet end 23, until the lip 108 engages the inlet end 23. The tapered section 114 helps to guide the frame member 96 into place without damaging the main body 52.
To clean gas, first, the filter elements should be installed within the air cleaner. The cover 8, containing a precleaner, is removed from the air cleaner section 9 of the housing 2. The safety filter element 20 is provided. The safety filter element 20 is handled and manipulated by grasping the handle 190, such as putting fingers through the voids 196, 204. The safety filter element 20 is placed through the open end of the air cleaner section 9 and installed within the portion 32.
The gasket 220 is compressed between and against the wall 9 to form a radial seal between the safety filter element 20 and the air cleaner section 9.
Next, the primary filter element 22 is provided. The primary filter element 22 is manipulated such that the downstream end 24 is placed first through the open end of the air cleaner portion 9. The socket 130 is aligned with the guides 212, 214 to be received therein. In particular, the core 57 has receiver pockets 164, 166 in the receiver 138 that receive the guides 212, 214 therewithin. The centering structure 150 of the core 57 interacts with the guides 212, 214 to help align and center the primary element 22 within the air cleaner section 9.
The primary element 22 is centered as described above and oriented such that the gasket 28 rests upon the flange 71 of the air cleaner section 9.
Next, the precleaner section 7 is oriented over the air cleaner section 9 so that the flange 70 rests on the gasket 28. The over center latches or clamps 17 are then used to apply axial force at joint 11 and form an axial seal with the gasket 28 between the precleaner section 7 of the housing and the air cleaner section 9 of the housing.
To clean gas, the gas enters the precleaner 7 through the centrifugal tubes 13.
The vortex generator 232 causes the gas flow to rotate, which causes the particulate matter to migrate toward the walls 228. The particulate matter is then ejected through the outlet ports 236 and fall by gravity through the dust ejector tube 14. The precleaned gas then flows through the extraction tubes 250 and then through the inlet face 23 of the primary filter element 22. The media 26 removes further particulate material from the gas. The cleaned gas then flows through the outlet face 24. Next, the cleaned gas flows through the media 184 of the safety filter element 20, and then through the outlet tube 3. From there, the cleaned gas flows to downstream equipment, such as an engine.

WO 4)3/084641 PCT/US03/10258 After a period of use, the air cleaner 1 will require servicing. To service the air cleaner 1, the precleaner section 7 is removed from the air cleaner section 9 of the housing 2. This is done by releasing the clamps. When the clamps are released, this releases the axial seal formed by the sealing gasket 28. The upstream face of the filter element 22 is then exposed. The filter element 22 is grasped and removed from the air cleaner section 9. The primary filter element 22 can be disposed of or recycled, in convenient applications. If the safety filter element 20 also needs servicing, the handle 190 is grasped, and the safety element 20 is removed from the air cleaner section 9 and disposed of or recycled. It should be understood that in many applications, the primary filter element 22 will require replacement, while the safety filter element 20 will not require replacement.
If the safety filter element is being replaced, then a second, new safety filter element 20 is inserted into the housing 2, as described in the initial installation description above. Next, a new primary filter element 22 is provided and is installed within the air cleaner section 9, as described above. The precleaner section 8 is placed over the air cleaner section 9, and the axial seal is formed with the gasket 28.
In general, an air filter cartridge comprises a z-filter media construction having an inlet flow face and an outlet flow face; and a seal member mounted to the z-filter media construction; the z-filter media construction defining a non-cylindrical receiving socket in at least one of the inlet flow face and the outlet flow face.
The cartridge can include a non-cylindrical core arrangement within the z-filter media construction; the core arrangement having opposing walls lining the receiving socket; the opposing walls defining at least one receiver pocket.
The core arrangement can include centering structure extending between and joining the opposing walls; the centering structure having an apex; the centering structure dividing the at least one receiver pocket into first and second receiver pockets. The core arrangement can extend completely between the inlet flow face and the outlet flow face. One of the opposing walls of the core arrangement can include at least one region of corrugations.
The z-filter media construction can include a plurality of flutes; each of the flutes having an upstream portion adjacent to the inlet flow face and a downstream portion adjacent to the outlet flow face; (i) selected ones of the flutes being open at the upstream portion and closed at the downstream portion; and selected ones of the flutes being closed at the upstream portion and open at the downstream portion; and (b) the media construction being a coiled configuration and defining the receiving socket in a center thereof.
The cartridge can be racetrack-shaped.

The cartridge can include a frame member secured to the z-filter media construction; the frame member including a projection extending radially from an outer sidewall of the z-filter media construction; the projection extending completely, peripherally, around the z-filter media construction; and the seal member being mounted to the projection of the frame member; the seal member extending completely, peripherally, around the z-filter media construction.
The frame member can include a band secured to the sidewall; and a lip extending radially inwardly from the band; the projection extending radially from the band;
the lip being in extension over at least a portion of one of the inlet flow face and the outlet flow face.
In general, an air cleaner arrangement comprises a first stage including a precleaner having multiple centrifugal separators; and a second stage including an air filter cartridge downstream of the precleaner; the air filter cartridge comprising z-filter media, a seal member, an inlet flow face, and an outlet flow face; the seal member being adjacent to the inlet flow face and forming a seal between the first stage and the second stage.
The precleaner can include a first tube sheet oriented over a cover construction; and a plurality of tapered tubes secured to the first tube sheet; each of the tapered tubes having a sidewall, an interior volume, a vortex within the interior volume, and an ejection port defined by the sidewall; the cover construction including a second tube sheet and a plurality of extraction tubes integral with the second tube sheet; each of the extraction tubes being received within the interior volume of a corresponding one of the plurality of tapered tubes; and the cover construction including an ejection tube in extension therefrom. Each of the tapered tubes can include a tab that is received by a corresponding slot in the first tube sheet to orient the ejection port of each of the tapered tubes toward the ejection tube.
The z-filter media can include a plurality of flutes; each of the flutes having an upstream portion adjacent to the inlet flow face and a downstream portion adjacent to the outlet flow face; selected ones of the flutes being open at the upstream portion and closed at the downstream portion; and selected ones of the flutes being closed at the upstream portion and open at the downstream portion; the first stage includes a cover construction containing the precleaner; the second stage includes a housing containing the air filter cartridge; and the seal is formed by pinching the seal member between the cover construction and the housing.
The air filter cartridge can include a frame member secured to the z-filter media; the frame member including a projection extending radially from an outer sidewall of the z-filter media; the projection extending completely, peripherally, around the z-filter media; the seal member being mounted to the projection of the frame member and adjacent to the inlet flow face; the seal member extending completely, peripherally, around the z-filter media; and the seal member is pinched between a flange on the cover construction and a flange on the housing.
The frame member can include a band secured to the sidewall; and a lip extending radially inwardly from the band; the projection extending radially from the band; the lip being in extension over at least a portion of the inlet flow face; and the frame member further includes a cross-brace construction in extension from the lip and extending over the inlet flow face.
A safety filter element can be operably mounted in the second stage; the safety filter element in engagement with the air filter cartridge.
In general, a safety filter element comprises a frame having an outer, surrounding band; a gasket mounted to the surrounding band; and a region of filter media secured to the frame; the frame including a center partition bisecting the band;
the region of filter media including first and second regions of filter media held by the frame and separated by the center partition; and the safety filter element further including a handle extending from the center partition; the handle being sized to accommodate at least a portion of a human hand between the handle and a remaining portion of the filter element.
The gasket can extend radially from the surrounding band; the first and second regions of media are pleated; the handle is integral with the center partition;
the handle comprising first and second projecting arms separated by a landing.
In general, an air cleaner comprises a housing; a primary filter element operably installed within the housing; the primary filter element including a z-filter media construction having an inlet flow face and an outlet flow face; the z-filter media construction defines a receiving socket in at least one of the inlet flow face WO 03/084641 PCT/US03/102s8 and the outlet flow face; and the air cleaner includes a projecting guide member extending into the receiving socket.

A safety filter element can be operably installed within the housing; the safety filter element including filter media held by a frame; and the projecting guide member being in extension from the safety filter element.
A non-cylindrical core arrangement can be mounted within the z-filter media construction; the core arrangement having opposing walls lining the receiving socket to define a receiving pocket; the safety filter element comprises a frame having an outer, surrounding band; a gasket mounted to the surrounding band; and a region of filter media secured to the frame; and the guide member extending from the frame of the safety filter and into the receiving pocket.
The core arrangement can include centering structure extending between and joining the opposing walls; the centering structure having an apex; the centering structure dividing the at least one receiver pocket into first and second receiver pockets; and the safety filter element frame includes a center partition bisecting the band; the region of filter media includes first and second regions of filter media held by the frame and separated by the center partition; the guide member is integral with the center partition and comprises first and second projecting arms separated by a landing; the first projecting arm extending into the first receiver pocket;
and the second projecting arm extending into the second receiver pocket.
The first and second projecting arms can each define a void sized to accommodate a portion of a human hand.

The housing can include a cover construction and an air cleaner body; the z-filter media construction includes a plurality of flutes; each of the flutes having an upstream portion adjacent to the inlet flow face and a downstream portion adjacent to the outlet flow face; selected ones of the flutes being open at the upstream portion and closed at the downstream portion; and selected ones of the flutes being closed at the upstream portion and open at the downstream portion; the air filter cartridge can further include a frame member secured to the z-filter media construction; the frame member including a projection extending radially from an outer sidewall of the z-filter media construction; the projection extending completely, peripherally, around the z-filter media construction; the seal member being mounted to the projection of the frame member and adjacent to the inlet flow face; the seal member extending completely, peripherally, around the z-filter media construction; and the seal member is pinched between the cover construction and the air cleaner body.

A precleaner can be upstream to the air filter cartridge; the precleaner having multiple centrifugal separators.
In general, a method for installing a primary filter element in an air cleaner includes providing an air cleaner housing having an interior; providing the primary filter element; the primary filter element comprising Z-filter media; the primary filter element defines an internal receiving socket; and orienting the primary filter element in the interior of the housing by aligning a projection extending from the interior of the housing into the receiving socket.
The step of orienting can include aligning a projection integral with a safety filter element operably installed in the housing into the receiving socket.

The above described principles can be applied in'a variety of embodiments and specific applications. From the general descriptions given, alternate applications to those described in the drawings will be understood.
The invention, therefore, should not be interpreted as limited by the specification, but rather by the claims eventually issued.

Claims (34)

What is claimed is:
1. An air cleaner comprising:
(a) a housing;
(b) a primary filter element operably installed within the housing; the primary filter element including a media construction having an inlet flow end and an outlet flow end and wherein the primary filter element is configured to provide straight through flow;
the primary filter element having a cross-sectional configuration including a pair of spaced opposite curved ends;
(ii) the primary filter element including an axial seal member extending completely peripherally around the media construction and axially sealed to a portion of the housing, the seal member including first and second opposite sides and an outer annular surface; the first and second opposite sides of the seal member being compressed axially toward one another in sealing the primary filter element to the housing; and (iii) a frame member including a band extending completely, peripherally, around the filter media construction of the primary filter element and a projection extending radially therefrom;
(A) said projection extending completely, peripherally, around said filter media construction; and, (B) said axial seal member being mounted on the frame member projection; and, (c) a precleaner upstream of the primary filter element; the precleaner including multiple centrifugal separators and an ejection tube.
2. An air cleaner according to claim 1, wherein each of the centrifugal separators has a sidewall, an interior volume, and vanes within the interior volume.
3. An air cleaner according to claim 1 wherein:
(a) said precleaner comprises:
(i) a first tube sheet;
(ii) each of the separators being secured to the first tube sheet; (iii) a second tube sheet;

(iv) each of the separators including a respective extraction tube integral with the second tube sheet.
4. An air cleaner according to claim 1 wherein:
(a) the primary filter element cross-sectional configuration comprises a pair of opposite semicircular ends joined by straight sides.
5. An air cleaner according to claim 1 wherein:
(a) the primary filter element includes a non-cylindrical core arrangement within the media construction; the core arrangement having opposing walls.
6. An air cleaner according to claim 5 wherein:
(a) the opposing walls of the core arrangement define a socket.
7. An air cleaner according to claim 5 wherein:
(a) said core arrangement extends completely between said inlet flow end and said outlet flow end of the primary filter element.
8. An air cleaner according to claim 1, wherein:
(a) the primary filter element has an oval cross-section.
9. An air cleaner according to claim 1, wherein:
(a) the primary filter element has a circular cross-section.
10. An air cleaner according to claim 1, wherein:
(a) the primary filter element has a racetrack shaped cross-section.
11. An air cleaner according to claim 1, wherein:
(a) the primary filter element has an obround shaped cross-section.
12. An air cleaner according to claim 1, further comprising:
(a) a safety element operably installed in the housing downstream of the primary filter element.
13. An air cleaner according to claim 12, wherein the safety element comprises a frame, a gasket mounted around the frame, and a region of pleated filter media within the frame.
14. An air cleaner according to claim 12, wherein the safety element has a cross-sectional configuration including a pair of opposite curved ends joined by sides.
15. An air cleaner according to claim 1, wherein:
(a) the media construction comprises flutes extending in a direction from the inlet flow first end to the outlet flow end.
16. An air cleaner according to claim 15, wherein the flutes are parallel to each other and do not change shape from one end to the other.
17. An air cleaner according to claim 1, wherein the media construction comprises z-media.
18. An air cleaner according to claim 1, wherein the axial seal member extending completely peripherally around the media construction is located within 10 mm of the primary filter element inlet flow end.
19. An air cleaner according to claim 1, wherein the axial seal member extending completely peripherally around the media construction is located within 5 mm of the primary filter element inlet flow end.
20. A filter element comprising:
(a) a filter construction having an inlet flow face and an outlet flow face; the filter construction having a main body with an outer surface; the filter construction defining:
(i) a set of inlet flutes open at the inlet flow face to passage of air to be filtered therein;
(ii) a set of outlet flutes open at the outlet flow face;
(iii) the filter construction being closed to flow of unfiltered air into the inlet flow face and then outwardly from the outlet flow face without filtering;

(b) a frame member including a band extending around the main body and against the outer surface; the frame member including a lip extending radially inwardly from the band;
(i) the lip hooking over an outer peripheral edge of the main body; and (c) a seal member being secured to the main body by the frame member; the seal member having first and second opposite sides and an outer annular surface;
the seal member being located between the inlet flow face and the outlet flow face.
21. A filter element according to claim 20 wherein:
(a) a brace construction extending over one of the flow faces.
22. A filter element according to claim 20 further including:
(a) a core arrangement within the filter construction.
23. A filter element according to claim 22 wherein:
(a) the core arrangement has opposing walls.
24. A filter element according to claim 20 wherein:
(a) the filter construction is a coiled construction.
25. A filter element according to claim 20 wherein:
(a) the filter construction is a stacked construction including a plurality of: a flat sheet of media secured to a corrugated sheet of media and stacked on top of each other.
26. A filter element according to claim 20 wherein:
(a) the filter element has a round shape.
27. A filter element according to claim 20 wherein:
(a) the filter element has an oval shape.
28. A filter element according to claim 20 wherein:
(a) the seal member defines a pocket;

(b) the frame member includes a projection; and (c) the pocket receives the projection to operably mount the seal member onto the frame member.
29. A filter element according to claim 20 wherein:
(a) the frame member extends completely peripherally around the main body.
30. A filter element according to claim 20 wherein:
(a) no portion of the seal member is positioned over either one of the inlet flow face and outlet flow face.
31. An air cleaner comprising:
(a) a housing;
(b) primary filter element operably installed within the housing; the primary filter element including:
(i) a filter construction having an inlet flow face and an outlet flow face;
the filter construction having a main body with an outer surface; the filter construction defining:
(A) a set of inlet flutes open at the inlet flow face to passage of air to be filtered therein;
(B) a set of outlet flutes at the outlet flow face;
(C) the filter construction being closed to flow of unfiltered air into the inlet flow face; and then outwardly from the outlet flow face without filtering;
(c) a frame member including a band extending around the main body and against the outer surface; the frame member including a lip extending radially inwardly from the band;
(i) the lip hooking over an outer peripheral edge of the main body; and (d) a seal member being secured to the main body by the frame member;
the seal member having first and second opposite sides and an outer annular surface;
the seal member being located between the inlet flow face and the outlet flow face;
(ii) the seal member forming a seal with the housing.
32. An air cleaner according to claim 31 further comprising:
(a) a precleaner upstream of the primary filter element; the precleaner including multiple centrifugal separators.
33. An air cleaner according to claim 31 wherein:
(a) the seal member forms an axial seal with the housing.
34. An air cleaner according to claim 31 wherein:
(a) no portion of the seal member is positioned over either one of the inlet flow face and outlet flow face; and (b) the air cleaner includes a safety element operably installed in the housing downstream of the primary filter element.
CA2730549A 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods Expired - Fee Related CA2730549C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2869643A CA2869643A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US37043802P 2002-04-04 2002-04-04
US60/370,438 2002-04-04
US42607102P 2002-11-12 2002-11-12
US60/426,071 2002-11-12
US10/405,432 US6966940B2 (en) 2002-04-04 2003-04-02 Air filter cartridge
US10/405,432 2003-04-02
CA002480740A CA2480740A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002480740A Division CA2480740A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2869643A Division CA2869643A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Publications (2)

Publication Number Publication Date
CA2730549A1 CA2730549A1 (en) 2003-10-16
CA2730549C true CA2730549C (en) 2015-02-17

Family

ID=28795010

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2730549A Expired - Fee Related CA2730549C (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods
CA002480740A Abandoned CA2480740A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods
CA2869643A Abandoned CA2869643A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Family Applications After (2)

Application Number Title Priority Date Filing Date
CA002480740A Abandoned CA2480740A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods
CA2869643A Abandoned CA2869643A1 (en) 2002-04-04 2003-04-03 Filter elements; air cleaner; assembly; and, methods

Country Status (12)

Country Link
US (10) US6966940B2 (en)
EP (1) EP1494785B1 (en)
JP (8) JP4574990B2 (en)
KR (1) KR20040111482A (en)
CN (3) CN100540113C (en)
AT (1) ATE354421T1 (en)
AU (1) AU2003226234A1 (en)
CA (3) CA2730549C (en)
DE (1) DE60311972T2 (en)
ES (1) ES2282650T3 (en)
MX (1) MXPA04009678A (en)
WO (1) WO2003084641A2 (en)

Families Citing this family (257)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8449638B2 (en) 1999-11-05 2013-05-28 Donaldson Company, Inc. Filter element, air cleaner, and methods
US6348084B1 (en) 1999-11-05 2002-02-19 Donaldson Company, Inc. Filter element, air cleaner, and methods
US6290739B1 (en) * 1999-12-29 2001-09-18 Donaldson Company, Inc. Aerosol separator; and method
DE10053983C1 (en) * 2000-10-31 2002-06-27 Montaplast Gmbh closure device
US6610126B2 (en) 2001-06-06 2003-08-26 Donaldson Company, Inc. Filter element having sealing members and methods
US6966940B2 (en) 2002-04-04 2005-11-22 Donaldson Company, Inc. Air filter cartridge
ES2379227T3 (en) 2002-05-09 2012-04-24 Donaldson Company, Inc. Air filter with side inlet
WO2004020075A2 (en) * 2002-08-08 2004-03-11 Mann+Hummel Gmbh Filter system
KR20050098922A (en) 2003-02-11 2005-10-12 도널드선 컴파니 인코포레이티드 Air cleaner arrangements; serviceable filter elements;and,method
DE10354401A1 (en) * 2003-03-14 2004-09-23 Mann + Hummel Gmbh Air filter for IC engine comprises cylindrical filter insert, filter medium being held at one end by plate with axial gripping components and at opposite end by hollow cylindrical collar with concentric sealing ring
EP1608453B1 (en) 2003-03-18 2010-06-02 Donaldson Company, Inc. Improved process for coiling z-filter media
US6955696B1 (en) * 2003-07-31 2005-10-18 Filtration Group, Inc. Filter frame and assembly
GB2404603B (en) * 2003-08-04 2007-03-21 Pall Corp Separator systems
DE10340122A1 (en) * 2003-08-30 2004-02-26 Mann + Hummel Gmbh Cyclone fluid cleaner e.g. for air intakes of internal combustion engine, has reduced pressure loss achieved by air-foil pressure recovery guide in clean air outlet
BRPI0416397B1 (en) 2003-11-12 2015-07-28 Donaldson Co Inc Air cleaner, method of maintaining an air cleaner and method of installing filter element.
US7097694B1 (en) * 2003-12-04 2006-08-29 Fleetguard, Inc. High performance, high efficiency filter
WO2005058460A1 (en) * 2003-12-17 2005-06-30 Sunny Metal Inc. A fluid filter
CA2550734C (en) * 2003-12-22 2015-06-30 Donaldson Company, Inc. Filter element comprising a seal arrangement and method for making the same
US20090266041A1 (en) * 2003-12-22 2009-10-29 Donaldson Company, Inc. Seal arrangement for filter element; Filter element assembly; and, methods
US7682416B2 (en) 2004-02-17 2010-03-23 Donaldson Company, Inc. Air cleaner arrangements; serviceable filter elements; and, methods
JP4664969B2 (en) * 2004-03-24 2011-04-06 ドナルドソン カンパニー,インコーポレイティド Filter element, air cleaner, assembly and filtration method
GB0409548D0 (en) * 2004-04-29 2004-06-02 King S College London Robotic hand
US7905936B2 (en) 2004-04-30 2011-03-15 Donaldson Company, Inc. Filter arrangements; housing; assemblies; and, methods
CA2564883C (en) * 2004-04-30 2013-12-17 Paul R. Coulonvaux Filter arrangements; housings; assemblies; and, methods
BRPI0511915B1 (en) * 2004-06-08 2016-07-12 Donaldson Co Inc air filter cartridge
ATE487529T1 (en) 2004-06-14 2010-11-15 Donaldson Co Inc AIR FILTER ARRANGEMENT AND METHOD
WO2006009766A1 (en) 2004-06-18 2006-01-26 Donaldson Company, Inc. Air cleaner arrangements; serviceable filter cartridge; and, methods
DE602005019417D1 (en) * 2004-07-20 2010-04-01 Donaldson Co Inc Z-FILTERMEDIENPACKUNGSANORDNUNG, FILTERPATRONE, AIR CLEANING DEVICE ARRANGEMENT AND METHOD
MX2007001427A (en) 2004-08-06 2007-04-02 Donaldson Co Inc Air filter arrangement; assembly; and, methods.
DE102005010443A1 (en) * 2004-09-21 2006-03-23 Mann + Hummel Gmbh filter element
DE102004049403A1 (en) * 2004-10-08 2006-04-20 Mann + Hummel Gmbh Compact filter with 4-edge seal
US7931725B2 (en) 2004-11-02 2011-04-26 Baldwin Filters, Inc. Fluted filter apparatus
US20110197556A1 (en) * 2004-11-02 2011-08-18 Baldwin Filters, Inc. Filter element
US8042694B2 (en) * 2004-11-02 2011-10-25 Baldwin Filters, Inc. Gathered filter media for an air filter and method of making same
US7261756B2 (en) * 2004-11-02 2007-08-28 Baldwin Filters, Inc. Safety filter element
US20060090431A1 (en) * 2004-11-02 2006-05-04 Baldwin Filters, Inc. Filter assembly with combination filter element
US20060091084A1 (en) * 2004-11-02 2006-05-04 Baldwin Filters, Inc. Fluted filter media with intermediate flow restriction and method of making same
US20060091061A1 (en) * 2004-11-02 2006-05-04 Baldwin Filters, Inc. Filter assembly with sealing system
US20060091064A1 (en) * 2004-11-02 2006-05-04 Baldwin Filters, Inc. Filter apparatus with separable seal support frame
US7318851B2 (en) * 2004-11-02 2008-01-15 Baldwin Filters, Inc. Filter element
US20070186528A1 (en) * 2006-02-15 2007-08-16 Baldwin Filters, Inc. Fluted filter apparatus
US7909954B2 (en) 2004-11-03 2011-03-22 Baldwin Filters, Inc. Method and apparatus for winding a filter media pack
US7255300B2 (en) 2004-11-03 2007-08-14 Baldwin Filters, Inc. Method and apparatus for winding a filter media pack
US8057567B2 (en) 2004-11-05 2011-11-15 Donaldson Company, Inc. Filter medium and breather filter structure
ES2541469T3 (en) 2004-11-05 2015-07-20 Donaldson Company, Inc. Spray separator
US8021457B2 (en) * 2004-11-05 2011-09-20 Donaldson Company, Inc. Filter media and structure
US7569090B2 (en) 2004-11-12 2009-08-04 Donaldson Company, Inc. Method of forming filter arrangements; and, apparatus
DE102004059279B4 (en) * 2004-12-09 2018-05-03 Mann + Hummel Gmbh air filter
US8496723B2 (en) 2005-01-13 2013-07-30 Donaldson Company, Inc. Air filter arrangement
BRPI0606625B1 (en) 2005-01-13 2018-06-19 Donaldson Company, Inc. AIR FILTER CARTRIDGE AND AIR FILTER ASSEMBLY
JP5308031B2 (en) 2005-02-04 2013-10-09 ドナルドソン カンパニー,インコーポレイティド Ventilation filter and ventilation filtration assembly
US7520913B2 (en) 2005-02-04 2009-04-21 Donaldson Company, Inc. Non-cylindrical filter elements, and methods
ATE442893T1 (en) 2005-02-22 2009-10-15 Donaldson Co Inc AEROSOL SEPARATOR
US8083825B2 (en) * 2005-02-28 2011-12-27 Donaldson Company, Inc. Filter arrangement and method
JP4866900B2 (en) * 2005-05-03 2012-02-01 ドナルドソン カンパニー,インコーポレイティド Air cleaner and air filter cartridge
DE202005009836U1 (en) * 2005-06-21 2006-10-26 Mann + Hummel Gmbh filter element
DE102005029750A1 (en) * 2005-06-24 2006-12-28 Mann + Hummel Gmbh Filter sealing system
DE102005031058A1 (en) 2005-07-02 2007-01-04 Mahle International Gmbh Filter element and a filter housing suitable for receiving it
JP2009511264A (en) 2005-10-11 2009-03-19 ドナルドソン カンパニー,インコーポレイティド Air filter components, assemblies and methods
CN101282775B (en) 2005-10-12 2011-08-10 科勒公司 Air cleaner assembly
US8409316B2 (en) 2005-11-09 2013-04-02 Donaldson Company, Inc. Seal arrangement for filter element; filter element assembly; and, methods
DE102006001126A1 (en) 2006-01-09 2007-07-12 Kettenbach Gmbh & Co. Kg Dental impression compounds, hardened products prepared therefrom and use of surfactants for the production of dental impression compounds
US7736410B2 (en) 2006-01-20 2010-06-15 Donaldson Company, Inc. Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
DE202006001440U1 (en) * 2006-01-31 2007-06-14 Mann+Hummel Gmbh Filter element and filter system, in particular for the intake air of an internal combustion engine
US7753982B2 (en) * 2006-02-17 2010-07-13 Baldwin Filters, Inc. Filter with drained jacket, seal indicator/lock means, and seal baffle
US7662216B1 (en) * 2006-05-05 2010-02-16 Fleetguard, Inc. In-line filter and service method
US7625419B2 (en) * 2006-05-10 2009-12-01 Donaldson Company, Inc. Air filter arrangement; assembly; and, methods
DE102006025235A1 (en) * 2006-05-29 2008-01-10 Mann + Hummel Gmbh Axially permeable filter element
DE102006028161A1 (en) * 2006-06-16 2007-12-27 Mann + Hummel Gmbh Compact filter element with knock-out protection
DE102006028159B4 (en) * 2006-06-16 2015-11-12 Mann + Hummel Gmbh Compact air filter element
US7713321B2 (en) 2006-06-22 2010-05-11 Donaldson Company, Inc. Air cleaner arrangements; components thereof; and, methods
CN103084021B (en) 2006-06-22 2015-07-01 唐纳森公司 Air cleaner arrangements, parts and method thereof
WO2008024683A1 (en) * 2006-08-25 2008-02-28 Pall Corporation Fluid assemblies comprising a purification element
DE202006015231U1 (en) * 2006-10-02 2008-02-14 Mann + Hummel Gmbh Device for separating particles from a gas stream
WO2008045326A2 (en) 2006-10-06 2008-04-17 Donaldson Company, Inc. Air cleaner, replaceable filter cartridges, and methods
US7682413B2 (en) * 2006-10-16 2010-03-23 Deere & Company Air precleaner arrangement for an internal combustion engine comprising two cyclone filters
US8096291B2 (en) * 2006-10-31 2012-01-17 Shu-Kuo Chen Supercharged tube of a vehicle air intake structure
US7588619B2 (en) 2006-11-28 2009-09-15 Wix Filtration Corp. Cross-flow filter media and filter assembly
US10040020B2 (en) * 2006-12-06 2018-08-07 Baldwin Filters, Inc. Fluid filter apparatus having filter media wound about a winding frame
US9757676B2 (en) 2006-12-06 2017-09-12 Baldwin Filters, Inc. Method and apparatus for winding a filter element
MX2009008242A (en) 2007-02-02 2009-08-12 Donaldson Co Inc Air filtration media pack, filter element, air filtration media, and methods.
MX2009009046A (en) 2007-02-22 2009-10-14 Donaldson Co Inc Filter element and method.
WO2008103821A2 (en) 2007-02-23 2008-08-28 Donaldson Company, Inc. Formed filter element
CN102861483B (en) 2007-02-26 2015-08-19 唐纳森公司 Air filter; Air cleaner assembly and method
DE202007004476U1 (en) * 2007-03-23 2008-07-31 Mann+Hummel Gmbh Filter for cleaning a fluid
US8404029B2 (en) 2007-06-14 2013-03-26 Donaldson Company, Inc. Crankcase ventilation filter arrangments; components; and, methods
CA2691867C (en) 2007-06-26 2016-10-04 Donaldson Company, Inc. Filtration media pack, filter element, and methods
BRPI0814706A2 (en) * 2007-07-13 2015-01-20 Donaldson Co Inc MEANS FOR ORGANIC COMPOUND REMOVAL
US8066791B2 (en) 2007-07-20 2011-11-29 Donaldson Company, Inc. Air cleaner arrangements with internal and external support for cartridge; components; and, methods
US8728193B2 (en) * 2007-09-07 2014-05-20 Donaldson Company, Inc. Air filter assembly; components thereof and methods
DE202007012690U1 (en) * 2007-09-11 2009-02-05 Mann+Hummel Gmbh filtering device
MY148039A (en) * 2007-09-17 2013-02-28 Nep Holdings Malaysia Bhd Water filter assembly
DE202007013822U1 (en) * 2007-10-02 2009-02-19 Mann+Hummel Gmbh Filter element and filter system
DE202007014822U1 (en) * 2007-10-02 2009-02-19 Mann+Hummel Gmbh Filter element Zackendichtung
DE202007014821U1 (en) * 2007-10-02 2009-02-26 Mann+Hummel Gmbh Filter element V-seal
US7914609B2 (en) * 2007-10-29 2011-03-29 Briggs & Stratton Corporation Cyclonic air cleaner assembly
US9545593B2 (en) 2007-11-01 2017-01-17 Baldwin Filters, Inc. Winding core pressure relief for fluted filter
US20090114095A1 (en) * 2007-11-06 2009-05-07 General Electric Company Filter cleaning system and method
BRPI0820419B1 (en) 2007-11-15 2021-03-09 Donaldson Company, Inc air filter cartridges and air filter assemblies
JP5986354B2 (en) * 2008-02-04 2016-09-06 ドナルドソン カンパニー,インコーポレイティド Method and apparatus for forming filtration media with flutes
CN101910601B (en) * 2008-02-14 2013-11-06 唐纳森公司 Raincap precleaner, motor vechile having a raincap precleaner, and method for precleaning air
WO2009106588A1 (en) 2008-02-26 2009-09-03 Mann+Hummel Gmbh Filter device, in particular air filter for an internal combustion engine
DE102008011186A1 (en) * 2008-02-26 2009-09-03 Mann + Hummel Gmbh Filter device, in particular air filter for an internal combustion engine
DE102008062954B4 (en) 2008-12-23 2023-06-15 Mann+Hummel Gmbh Filter device, in particular air filter for an internal combustion engine
DE202008002813U1 (en) * 2008-02-28 2009-07-02 Mann+Hummel Gmbh Filter device, in particular air filter for internal combustion engines
US8043394B2 (en) * 2008-03-21 2011-10-25 GM Global Technology Operations LLC Particulate matter filter assembly with a flow device
DE102008027507A1 (en) * 2008-06-10 2009-12-31 Carl Freudenberg Kg Filter element with a 2-K frame
WO2009150165A1 (en) * 2008-06-11 2009-12-17 Mann+Hummel Gmbh Filter unit for filtering gaseous fluids
US8808432B2 (en) 2008-06-13 2014-08-19 Kohler Co. Cyclonic air cleaner
USD632770S1 (en) * 2008-06-13 2011-02-15 Kohler Co. Cyclonic air cleaner housing
US8048187B2 (en) 2008-06-30 2011-11-01 Baldwin Filters, Inc. Filter frame attachment and fluted filter having same
US7959703B2 (en) 2008-06-30 2011-06-14 Baldwin Filters, Inc. Fluted filter with integrated frame
MX2011000790A (en) 2008-07-22 2011-02-24 Donaldson Co Inc Air cleaner assembly; components therefor; and, methods.
WO2010011910A2 (en) 2008-07-25 2010-01-28 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
WO2010017407A1 (en) * 2008-08-06 2010-02-11 Donaldson Company, Inc. Z-media having flute closures, methods and apparatus
US7972403B2 (en) * 2008-08-12 2011-07-05 Mann + Hummel Gmbh Rotate-once outlet fitting for a filter housing
US8317890B2 (en) 2008-08-29 2012-11-27 Donaldson Company, Inc. Filter assembly; components therefor; and, methods
JP5471260B2 (en) 2008-11-14 2014-04-16 セイコーエプソン株式会社 Liquid container
DE202008015957U1 (en) * 2008-12-03 2010-04-29 Dolmar Gmbh Intake system for intake of combustion air and hand-held implement
US8110016B2 (en) * 2008-12-11 2012-02-07 Dow Global Technologies Llc Fluid filter assembly including seal
DE202008017059U1 (en) * 2008-12-23 2010-05-12 Mann + Hummel Gmbh Filter device for internal combustion engines
US8267681B2 (en) 2009-01-28 2012-09-18 Donaldson Company, Inc. Method and apparatus for forming a fibrous media
US8491684B2 (en) 2009-02-27 2013-07-23 Donaldson Company, Inc. Filter cartridge; components thereof; and methods
US8187458B2 (en) 2009-03-18 2012-05-29 Lifetime Oil Filter, Inc. Oil filter
US8506668B2 (en) 2009-03-30 2013-08-13 Baldwin Filters, Inc. Fluted filter with axial seal
US8920528B2 (en) 2009-03-31 2014-12-30 Donaldson Company, Inc. Air cleaner, components thereof, and methods
US8192623B2 (en) * 2009-04-01 2012-06-05 Wix Filtration Corp Llc Filter structure
US8061530B2 (en) 2009-04-09 2011-11-22 Cummins Filtration Ip, Inc. Filtration sealing system
US8043503B2 (en) * 2009-05-27 2011-10-25 Parker-Hannifin Corporation Filter with quick attachment features
US7935160B2 (en) * 2009-05-29 2011-05-03 Cummins Filtration Ip, Inc. Filter assembly with trapped contaminant servicing
US8752736B2 (en) * 2009-07-15 2014-06-17 Mann+Hummel Gmbh Self actuating rotary dust valve
US8404115B2 (en) * 2009-07-20 2013-03-26 Cummins Filtration Ip Inc. Sealed filter element
WO2011017352A2 (en) 2009-08-03 2011-02-10 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media having tapered flutes
DE102009036475A1 (en) * 2009-08-07 2011-02-10 Mahle International Gmbh Filter device and wound filter element
US9174160B2 (en) 2009-08-19 2015-11-03 Baldwin Filters, Inc. Collapsible core, filter, and method
CN102574065B (en) * 2009-09-28 2014-10-22 旭化成化学株式会社 Membrane element, gas separation device and internal combustion engine
ES2437165T3 (en) 2009-10-02 2014-01-09 Donaldson Company, Inc. Filter cartridge with center board, dust collectors, and methods
CN102135055B (en) * 2010-01-22 2014-04-23 唐纳森(无锡)过滤器有限公司 Embedded elbow and assembly formed by combining embedded elbow with air cleaner
US10058812B2 (en) 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes
US20110209450A1 (en) * 2010-03-01 2011-09-01 Mann+Hummel Gmbh Flange with integral electrically conductive seal and seal arrangement
GB2491081A (en) 2010-03-17 2012-11-21 Baldwin Filters Inc Fluid filter
WO2011115979A2 (en) * 2010-03-17 2011-09-22 Baldwin Filters, Inc. Fluid filter
DE102010023973A1 (en) * 2010-06-16 2011-12-15 Mahle International Gmbh filter cartridge
US8828114B2 (en) 2010-09-16 2014-09-09 Cummins Filtration Ip Inc. Filter element with features to improve pre-cleaning performance, sealing, and structural support
WO2012040382A2 (en) 2010-09-21 2012-03-29 Lifetime Oil Filter, Inc. Oil filter
SE1051092A1 (en) 2010-10-21 2012-04-17 3Nine Ab Apparatus for centrifugal separation of particles from a gas flow where two or more rotors are arranged in a common housing
ES2478966T3 (en) 2010-10-26 2014-07-23 Dow Global Technologies Llc Spiral wound module that includes a membrane sheet with regions that have different permeabilities
KR101140129B1 (en) 2011-03-17 2012-05-02 에스피엑스 플로우 테크놀로지 주식회사 Filter for compressed air
US11235274B2 (en) 2011-06-30 2022-02-01 Donaldson Company, Inc. Filter systems; components; features; and, methods of assembly and use
US9504949B2 (en) 2011-06-30 2016-11-29 Donaldson Company, Inc. Air/oil separator assemblies; components; and methods
US8683970B2 (en) * 2011-07-28 2014-04-01 Cnh America Llc Air intake system for off-road vehicles
DE102011110696B4 (en) * 2011-08-16 2015-12-10 Mtu Friedrichshafen Gmbh Airscoops-cyclone filter assembly
CN102309901A (en) * 2011-09-28 2012-01-11 中国北车集团大连机车研究所有限公司 Air filtration device with low wind resistance
RU2641818C2 (en) 2011-10-26 2018-01-22 Дональдсон Компани, Инк. Assembled filters, their elements and distinctive features, methods of their use and assembly
US9387425B2 (en) 2011-10-26 2016-07-12 Donaldson Company, Inc. Filter assemblies; components and features thereof; and, methods of use and assembly
JP6214555B2 (en) * 2012-01-13 2017-10-18 マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング Air filter element having a retaining shape
USD749641S1 (en) * 2012-02-08 2016-02-16 Joerg Menssen Air filter
CN102619654B (en) * 2012-03-21 2015-05-20 中国北方车辆研究所 Rough air filter
DE102012005731B4 (en) * 2012-03-23 2017-07-06 Mann + Hummel Gmbh Air filter and filter element of an air filter
US20140014597A1 (en) * 2012-07-13 2014-01-16 Cummins Filtration Ip, Inc. Dual Flow Filter Element
JP6216378B2 (en) 2012-07-25 2017-10-18 ボールドウィン・フィルターズ・インコーポレーテッドBaldwin Filters Inc Filter housing, pleated filter, and safety filter
US9273646B2 (en) * 2012-09-14 2016-03-01 Mann+ Hummel Gmbh Cyclone separation device
US9833864B2 (en) 2012-09-21 2017-12-05 Christopher Hubbard Method of exchanging a filter assembly
DE102013016296A1 (en) * 2012-10-15 2014-04-17 Mann + Hummel Gmbh cyclone
US8986431B2 (en) 2012-11-14 2015-03-24 Pall Corporation Purification arrangements and methods for gas pipeline systems
US8864864B2 (en) * 2012-12-03 2014-10-21 Ye Siang Enterprise Co., Ltd. Circular cylinder air filter
JP5935681B2 (en) * 2012-12-18 2016-06-15 トヨタ紡織株式会社 Air cleaner
US9724635B2 (en) * 2013-03-14 2017-08-08 Bladwin Filters, Inc. Rectangular stacked fluted filter cartridge
WO2014190206A1 (en) 2013-05-22 2014-11-27 Donaldson Company, Inc. Vertical air intake system; air cleaner; and filter element
US9726123B2 (en) * 2013-06-20 2017-08-08 Mann+Hummel Gmbh Air filter, filter element and filter housing of an air filter
US10436155B2 (en) * 2013-06-20 2019-10-08 Mann+Hummel Gmbh Air filter, filter element and filter housing of an air filter
CN107715607B (en) * 2013-06-28 2020-03-17 唐纳森公司 Filter cartridge for air cleaner assembly
DE102013011609B4 (en) * 2013-07-12 2017-08-17 Mann + Hummel Gmbh Air filter element and this containing air filter
JP6352076B2 (en) * 2013-07-12 2018-07-04 マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング Filter element having handgrip element and filter having filter element
DE102014009026A1 (en) * 2013-07-12 2015-01-15 Mann + Hummel Gmbh Filter element with at least one guide web, filter with a filter element and filter housing of a filter
DE102014011302A1 (en) * 2013-09-02 2015-03-05 Mann + Hummel Gmbh Filter element and filter system
WO2015061474A1 (en) * 2013-10-25 2015-04-30 Donaldson Company, Inc. High performance pre-cleaner and method
DE102014002631B4 (en) 2014-02-27 2016-08-04 Mann + Hummel Gmbh Filter element and fluid filter with radial vent hole
US20150246307A1 (en) * 2014-03-03 2015-09-03 Mark Harold Whitehead Centrifugal air cleaning system and method
US9168499B1 (en) * 2014-04-25 2015-10-27 Pall Corporation Arrangements for removing entrained catalyst particulates from a gas
EP2966856B1 (en) * 2014-07-08 2020-04-15 Sony Depthsensing Solutions N.V. A high dynamic range pixel and a method for operating it
CN106573184B (en) * 2014-07-25 2019-07-19 康明斯过滤Ip公司 The filter element of modified filter medium packet characteristic
DE102015008525A1 (en) * 2014-08-12 2016-02-18 Mann + Hummel Gmbh Centrifugal separator and filter arrangement
US9776118B2 (en) 2014-08-25 2017-10-03 Mann+Hummel Gmbh Filter element and housing with cooperating filter media support structures
US9500164B2 (en) * 2014-08-29 2016-11-22 Caterpillar, Inc. Air filter element and filter housing
EP3194048B1 (en) * 2014-09-15 2020-07-08 Donaldson Company, Inc. Filter cartridge and air cleaner assembly
US10087898B2 (en) 2014-09-26 2018-10-02 Ford Global Technologies Llc Air filter element assembly for a motor vehicle
US10252205B2 (en) 2014-09-26 2019-04-09 Ford Global Technologies, Llc Air filter element assembly for a motor vehicle
US9616373B2 (en) * 2014-10-24 2017-04-11 Caterpillar Inc. Inertial separation pre-cleaner
US9689334B2 (en) * 2014-11-14 2017-06-27 Cnh Industrial America Llc Air intake system for an off-road vehicle
US9795907B2 (en) * 2014-12-01 2017-10-24 DRM Diversafab Corp. Adapter assembly for securing a precleaner to an air filtration system
US9752541B2 (en) * 2014-12-05 2017-09-05 Caterpillar Inc. Filter media
US9675920B2 (en) * 2014-12-19 2017-06-13 Caterpillar Inc. Apparatus for air precleaner and precleaner
CN107223069B (en) * 2014-12-27 2021-06-22 唐纳森公司 A filter cartridge; an air cleaner assembly; a housing; characteristic; a component; and method
JP6456707B2 (en) * 2015-02-02 2019-01-23 三喜ゴム株式会社 Replacement filter for air purifier
CN104747327A (en) * 2015-02-27 2015-07-01 蚌埠市风驰滤清器有限公司 Conical filter element of air filter
EP3799944B1 (en) 2015-03-02 2023-08-30 Donaldson Company, Inc. Air filter cartridge
TWI534006B (en) * 2015-04-09 2016-05-21 Filter element and its forming method
DE102016003454A1 (en) * 2015-04-10 2016-10-13 Mann + Hummel Gmbh Filter holder and filter assembly
DE102016003455B4 (en) 2015-04-10 2020-08-06 Mann+Hummel Gmbh Filter holder and filter arrangement
DE102016003456A1 (en) * 2015-04-10 2016-10-13 Mann + Hummel Gmbh Filter holder, filter element and filter assembly
US20160305375A1 (en) * 2015-04-15 2016-10-20 Caterpillar Inc. Filter assembly
US10737282B2 (en) * 2015-10-12 2020-08-11 Cummins Filtration Ip, Inc. Tangential air cleaner with coiled filter cartridge
USD786935S1 (en) 2015-11-20 2017-05-16 Baldwin Filters, Inc. Filter element
USD798907S1 (en) * 2015-11-20 2017-10-03 Baldwin Filters, Inc. Filter element
EP3377751B1 (en) * 2015-11-20 2020-09-09 Baldwin Filters, Inc. Filter element having mounting frame
US20170144098A1 (en) * 2015-11-25 2017-05-25 Ernesto Rodriguez Air Handler Cleaning Receptacle
AU2016259419B2 (en) * 2015-11-30 2020-12-10 Parker-Hannifin Corporation Engine Panel Filter and Housing System
DE112016004899T5 (en) 2015-12-11 2018-07-12 Cummins Filtration Ip, Inc. Filter with axial seal with variable cross-section
CA3011088C (en) 2016-01-27 2023-10-03 Koch-Glitsch, Lp Inlet vane device with inner beam for rigidity and vessel containing same
JP6951346B2 (en) 2016-02-12 2021-10-20 ドナルドソン カンパニー,インコーポレイティド Filter element, air purifier assembly, and how to use and assemble
WO2017142789A2 (en) 2016-02-19 2017-08-24 Baldwin Filters, Inc. Surface coated filter and method
DE102016002247A1 (en) * 2016-02-26 2017-08-31 Mann + Hummel Gmbh Filter element, in particular for gas filtration
CN114288725B (en) * 2016-03-18 2023-06-13 康明斯过滤Ip公司 Interlocking stable filter assembly
US10682597B2 (en) 2016-04-14 2020-06-16 Baldwin Filters, Inc. Filter system
WO2017192441A1 (en) 2016-05-02 2017-11-09 Cummins Filtration Ip, Inc. Filter with interlocking housing interface
USD810786S1 (en) * 2016-06-03 2018-02-20 S&B Filters, Inc. Particle separator for motor vehicle engine intake
EP3257566B1 (en) * 2016-06-15 2020-11-18 LG Electronics Inc. -1- Air cleaner
US11318405B2 (en) 2016-06-17 2022-05-03 Donaldson Company, Inc. Air cleaner assemblies and methods of use
KR20180020663A (en) 2016-08-19 2018-02-28 삼성전자주식회사 Air cleaner
CN106215573A (en) * 2016-08-29 2016-12-14 赵莹颖 Air cleaner defecator
US11554338B2 (en) 2016-12-01 2023-01-17 Donaldson Company, Inc. Filter elements, air cleaner assemblies, and methods of use and assembly
US10357731B2 (en) 2016-12-20 2019-07-23 Baldwin Filters, Inc. Filter with preformed end caps having notch feature
CN110248714B (en) 2017-01-25 2022-06-07 康明斯过滤Ip公司 Expandable threaded adapter for threadless housings
WO2018156489A1 (en) 2017-02-21 2018-08-30 Cummins Filtration Ip, Inc. Undulated interlocking housing-endplate interface geometry
JP6877181B2 (en) * 2017-02-27 2021-05-26 リンナイ株式会社 Forced air supply type combustion device
US10746141B2 (en) * 2017-03-14 2020-08-18 Kohler Co. Engine air cleaner
DE112018000692T5 (en) 2017-03-16 2019-10-17 Cummins Filtration Ip, Inc. FILTRATION SEALING SYSTEM
EP3401000A1 (en) 2017-05-09 2018-11-14 Donaldson Company, Inc. Adapter and air filter cartridge being adapted for use with such an adapter
US10864469B2 (en) 2017-06-05 2020-12-15 Donaldson Company, Inc. Air cleaner assemblies and methods of use
KR102585171B1 (en) 2017-08-09 2023-10-05 도날드슨 컴파니, 인코포레이티드 Filter cartridges, air cleaner assemblies, housings, features, components, and methods
USD885545S1 (en) 2017-08-09 2020-05-26 Donaldson Company, Inc. Filter cartridge
USD885546S1 (en) 2017-08-09 2020-05-26 Donaldson Company, Inc. Filter cartridge
BR112020003970A2 (en) 2017-08-31 2020-09-01 Donaldson Company, Inc. filter cartridges; air purifier assemblies; Accommodation; resources; components; and methods
US11498022B2 (en) 2017-12-08 2022-11-15 Cummins Filtration Ip, Inc. Oval seal with stabilization contour
US11059682B2 (en) * 2017-12-21 2021-07-13 The Charles Machine Works, Inc. Offloading vacuum tank
DE112019000386T5 (en) 2018-01-12 2020-10-15 Cummins Filtration Ip, Inc. Easy to maintain air filter
US10888810B2 (en) * 2018-02-08 2021-01-12 Mann+Hummel Gmbh Inline filter system having a pre-separator module
USD884866S1 (en) 2018-05-08 2020-05-19 Cummins Filtration Ip, Inc. Filter element
US10918978B2 (en) 2018-05-08 2021-02-16 Cummins Filtration Ip, Inc. Oval filter with exterior elliptical radial seal and internal support structure
WO2019231820A1 (en) * 2018-05-31 2019-12-05 Cummins Filtration Ip, Inc. Filter assembly including a removable outlet conduit
USD905842S1 (en) 2018-06-15 2020-12-22 Donaldson Company, Inc. Filter cartridge
CN109758856A (en) * 2019-01-31 2019-05-17 青岛理工大学 A kind of recycling of micro lubricating Grinding Process mist of oil, separation and purification device
USD1002792S1 (en) 2019-02-05 2023-10-24 Donaldson Company, Inc. Filter cartridge
US11118545B2 (en) * 2019-03-26 2021-09-14 Caterpillar Inc. Precleaner system
KR102069994B1 (en) * 2019-04-12 2020-01-23 (주)에코에너지 기술연구소 Filtration system with selective dust collection
DE102019003209A1 (en) * 2019-05-07 2020-11-12 Deere & Company Centrifugal air filter for a vehicle system
IT201900011190A1 (en) 2019-07-08 2021-01-08 Officine Metallurgiche G Cornaglia Spa Air filter for endothermic engines equipped with interchangeable cartridge
IT201900011187A1 (en) 2019-07-08 2021-01-08 Officine Metallurgiche G Cornaglia Spa Air filter for endothermic engines equipped with safety cartridge
US11278964B2 (en) * 2019-10-10 2022-03-22 The Boeing Company Monolithic particle separators
CN113950364B (en) * 2020-01-21 2024-02-20 达伦·理查德·毕比 Cyclone type air filtering device
DE102020200945A1 (en) * 2020-01-27 2021-07-29 Deere & Company Air filter system for a commercial vehicle
US11161068B2 (en) 2020-03-02 2021-11-02 MANN+HUMMEL Filtration Technology US LLC Filter assembly
USD969289S1 (en) 2020-03-05 2022-11-08 Cummins Filtration Inc. Filter element
USD946733S1 (en) * 2020-07-05 2022-03-22 Champion Laboratories, Inc. Filter frame
US11666844B2 (en) 2020-09-30 2023-06-06 Caterpillar Inc. Filtration device having a latch mechanism adapter
DE102021105231A1 (en) 2021-03-04 2022-09-08 Mann+Hummel Gmbh Filter element, filter element arrangement and filter system with a filter element arrangement

Family Cites Families (164)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US424115A (en) * 1890-03-25 Guipowdee can
US2887177A (en) * 1958-02-18 1959-05-19 Donaldson Co Inc Air cleaner construction
US3025963A (en) * 1958-03-13 1962-03-20 Russell H Curtis Products useful as filtering devices and methods of making them
US3216578A (en) 1960-12-19 1965-11-09 Donaldson Co Inc Pleated filter
US3293833A (en) 1963-02-28 1966-12-27 Cambridge Filter Corp Pleated filter
GB1121896A (en) * 1966-07-21 1968-07-31 Gen Motors Ltd Air filters
US3849241A (en) * 1968-12-23 1974-11-19 Exxon Research Engineering Co Non-woven mats by melt blowing
US3841953A (en) * 1970-12-31 1974-10-15 Exxon Research Engineering Co Nonwoven mats of thermoplastic blends by melt blowing
US3676242A (en) * 1969-08-13 1972-07-11 Exxon Research Engineering Co Method of making a nonwoven polymer laminate
US3695012A (en) 1970-04-23 1972-10-03 Donaldson Co Inc Filter assembly with pleated filter element
US3676272A (en) * 1970-05-08 1972-07-11 Kenneth N White Hand tool for applying edge banding to laminated plastic boards
US3712033A (en) 1971-06-01 1973-01-23 Donaldson Co Inc Air cleaner with hinged side walls
FR2161503A5 (en) 1971-11-26 1973-07-06 Manuf Accum Objets Moule Air filter element - made integral with plastic cover removable only by destruction
US4065341A (en) * 1972-11-21 1977-12-27 Robert Bosch Gmbh Method of making a liquid filter
US3878014A (en) * 1973-04-30 1975-04-15 Beloit Corp Process for matting melt blow microfibers
AU473778B2 (en) 1973-05-19 1976-07-01 Mitsubishi Denki Kabushki Kaisha Filter device and method of producing the same
US4158449A (en) 1976-12-07 1979-06-19 Pall Corporation Inlet air cleaner assembly for turbine engines
US4162906A (en) * 1977-05-05 1979-07-31 Donaldson Company, Inc. Side outlet tube
US4187091A (en) 1977-05-16 1980-02-05 Donaldson Company, Inc. Pleated paper filter cartridge
US4159899A (en) * 1977-08-26 1979-07-03 Fram Corporation Precleaner assembly
US4242115A (en) * 1979-02-05 1980-12-30 Donaldson Company, Inc. Air cleaner assembly
GB2080155B (en) * 1980-07-23 1983-11-09 Sundseth Jarl Air cleaner
JPS5756657U (en) 1980-09-19 1982-04-02
USRE32185E (en) 1980-10-10 1986-06-17 Donaldson Company, Inc. Self-cleaning pulsed air cleaner
US4331459A (en) 1980-10-10 1982-05-25 Donaldson Company, Inc. Self-cleaning pulsed air cleaner
DE3280289D1 (en) 1981-02-23 1991-02-14 Nippon Denso Co FILTER ELEMENT FOR FLUID CLEANING SYSTEMS.
US4430223A (en) * 1981-02-25 1984-02-07 Nippondenso Co., Ltd. Filter element for filtering fluid and method of producing same
JPS57188004A (en) * 1981-05-14 1982-11-18 Olympus Optical Co Ltd Automatic focusing zoom lens
EP0070636B1 (en) 1981-07-16 1986-04-16 Massey-Ferguson Services N.V. Cab with heating and/or ventilating system
JPS593624A (en) 1982-06-30 1984-01-10 Fujitsu Ltd Print output control system
US4449993A (en) * 1982-07-19 1984-05-22 Equifab, Inc. Filter module for dust collector system
JPS606870U (en) 1983-06-28 1985-01-18 株式会社 土屋製作所 Air cleaner with pre-cleaner
LU84966A1 (en) 1983-08-12 1985-04-24 Arbed COMPOSITE PROFILES
US4537608A (en) * 1983-11-16 1985-08-27 Pall Corporation System for removing contaminant particles from a gas
JPS60112320A (en) 1983-11-24 1985-06-18 Hitachi Ltd Protecting system of tristate gate
JPS6091218U (en) 1983-11-30 1985-06-22 株式会社 土屋製作所 Air cleaner with honeycomb element interior
JPS60112320U (en) 1983-12-28 1985-07-30 株式会社 土屋製作所 Air cleaner with built-in honeycomb element with conical part
JPS60124622U (en) * 1984-01-31 1985-08-22 株式会社 土屋製作所 Air cleaner with honeycomb element interior
JPS60124623U (en) 1984-01-31 1985-08-22 株式会社 土屋製作所 air cleaner
US4617122A (en) 1984-08-01 1986-10-14 Donaldson Company, Inc. Crimp seal pleated filter assembly
JPH0337697Y2 (en) * 1984-12-29 1991-08-09
JPS61275561A (en) 1985-05-29 1986-12-05 Honda Motor Co Ltd Air-cleaner
JPH022931Y2 (en) * 1985-05-29 1990-01-24
US4710297A (en) 1985-06-15 1987-12-01 Kabushiki Kaisha Tsuchiya Seisakusho Fluid filter with pleated filter medium
US4673503A (en) 1985-07-18 1987-06-16 Tokyo Roki Co., Ltd. Variant length pleated filter element
JPH0414110Y2 (en) * 1986-03-28 1992-03-31
JPH0722669B2 (en) * 1986-05-30 1995-03-15 日本電装株式会社 Filtration element
US4720292B1 (en) 1986-07-14 1991-09-10 Cylindrical air filter with lightweight housing and radially directed seal
JPS6333612A (en) 1986-07-29 1988-02-13 Toshiba Corp Optical fiber gyroscope
JPS6333612U (en) 1986-08-21 1988-03-04
US4746340A (en) * 1986-10-28 1988-05-24 Donaldson Company, Inc. Air cleaner apparatus
JP2643153B2 (en) 1987-07-03 1997-08-20 セイコーエプソン株式会社 High frequency bias sputtering equipment
JPH068044Y2 (en) 1987-07-08 1994-03-02 東洋製罐株式会社 Drip prevention container
JPH0616808B2 (en) * 1987-08-05 1994-03-09 進和テック株式会社 Bug regenerating type dust collector
US5347030A (en) * 1987-10-23 1994-09-13 The Board Of Regents Of The University Of Michigan Radioiodinated phospholipid ether analogues and methods of using same
JPH01171615A (en) * 1987-12-25 1989-07-06 Toyo Roki Seizo Kk Filter element
JPH01171615U (en) 1988-05-23 1989-12-05
JPH0231131A (en) 1988-07-20 1990-02-01 Rigaku Keisoku Kk Method of industrial analysis of coal and infrared heating oven
JP2595332B2 (en) 1988-11-02 1997-04-02 三菱電機株式会社 Network system data transfer method
DE4031014C2 (en) 1989-04-06 1993-11-18 Mann & Hummel Filter Intake air filter for internal combustion engines
DE3911153A1 (en) * 1989-04-06 1990-10-11 Mann & Hummel Filter INTAKE AIR FILTER FOR INTERNAL COMBUSTION ENGINES
JPH0317264U (en) * 1989-07-04 1991-02-20
JPH0828376B2 (en) 1989-08-24 1996-03-21 松下電器産業株式会社 Bipolar transistor manufacturing method
JPH03108850A (en) 1989-09-21 1991-05-09 Matsushita Electric Ind Co Ltd Multi-function telephone set with display
US4963171A (en) 1989-11-02 1990-10-16 Donaldson Company, Inc. High efficiency filter and method of fabricating same
WO1991019898A1 (en) 1990-06-19 1991-12-26 Allied-Signal Inc. Filter and process for manufacturing a filter
US5238474A (en) * 1990-10-19 1993-08-24 Donaldson Company, Inc. Filtration arrangement
US5240479A (en) 1991-05-17 1993-08-31 Donaldson Company, Inc. Pleated filter media having a continuous bead of adhesive between layers of filtering material
DE4203864C2 (en) 1992-02-11 1993-12-02 Deere & Co Positioning device for air filters
ZA931264B (en) * 1992-02-27 1993-09-17 Atomic Energy South Africa Filtration.
JP3239517B2 (en) * 1992-06-17 2001-12-17 株式会社デンソー Manufacturing method of filtration element
JP2595332Y2 (en) 1993-02-26 1999-05-31 株式会社テネックス Air cleaner
JPH0667848U (en) * 1993-02-26 1994-09-22 株式会社土屋製作所 Air cleaner
US5679122A (en) * 1993-08-14 1997-10-21 Minnesota Mining & Manufacturing Company Filter for the filtration of a fluid flow
US5415676A (en) 1993-08-16 1995-05-16 Donaldson Company, Inc. Mist collector cartridge
US5487767A (en) * 1993-09-30 1996-01-30 Dana Corporation Radially sealed air filters
US5547480A (en) * 1994-01-21 1996-08-20 Donaldson Company, Inc. Cylindrical air filter with radially directed seal
JP3299622B2 (en) * 1994-03-11 2002-07-08 豊田紡織株式会社 Air cleaner device
US5472463A (en) * 1994-06-14 1995-12-05 Cummins Engine Company, Inc. Pressure side integrated air filter and filtering networks for engines
US5543480A (en) * 1994-06-28 1996-08-06 The Dow Chemical Company Polymerization process using diene containing catalysts
DE19524677A1 (en) * 1994-07-07 1996-01-11 Nippon Denso Co Air-conditioning filter insert of simple construction having strengthened end-section
JPH0828376A (en) 1994-07-11 1996-01-30 Nippondenso Co Ltd Air cleaner for internal combustion engine
US5674302A (en) * 1994-07-12 1997-10-07 Nippondenso Co., Ltd. Automobile filter element
JPH0842417A (en) 1994-07-29 1996-02-13 Tsuchiya Mfg Co Ltd Air cleaner
DE4430333C2 (en) * 1994-08-29 2000-02-17 Mann & Hummel Filter filter
JP3108850B2 (en) 1994-11-04 2000-11-13 株式会社ユニシアジェックス Rotation sensor
US6004366A (en) 1994-11-23 1999-12-21 Donaldson Company, Inc. Reverse flow air filter arrangement and method
US5613992A (en) * 1994-11-23 1997-03-25 Donaldson Company, Inc. Reverse flow air filter arrangement and method
CA2163167A1 (en) 1994-11-30 1996-05-31 Dennis B. Keller Filter with molded end cap and media spacer
DE4443676C2 (en) 1994-12-08 1998-08-13 Hengst Walter Gmbh & Co Kg Filters with a filter housing and a replaceable filter element arranged therein
WO1996021501A1 (en) 1995-01-12 1996-07-18 Donaldson Company, Inc. Filter element
US5545241B1 (en) * 1995-01-17 1999-09-28 Donaldson Co Inc Air cleaner
AU4858496A (en) * 1995-01-27 1996-08-14 Mine Safety Appliances Company Respirator filter system
US5667545A (en) * 1995-07-03 1997-09-16 Toyoda Boshoku Corporation Filter element for air cleaner and method of manufacturing the same
DE19548197C2 (en) 1995-12-22 1999-05-20 Freudenberg Carl Fa Pleated filter insert
JP3199645B2 (en) 1996-09-09 2001-08-20 株式会社デンソー Filter element
JP3160836B2 (en) 1995-12-26 2001-04-25 株式会社デンソー Filter element and manufacturing method thereof
DE19654188C5 (en) 1995-12-26 2010-09-23 Toyoda Boshoku Corp., Kariya-shi Filter element and method for its production
JPH09234321A (en) 1996-02-29 1997-09-09 Tenetsukusu:Kk Filter member attaching apparatus
US5795361A (en) * 1996-03-12 1998-08-18 Dana Corporation Filter configuration
USD398046S (en) * 1996-04-26 1998-09-08 Donaldson Company, Inc. Combined filter element and frame therefor
USD425189S (en) * 1996-04-26 2000-05-16 Donaldson Company, Inc. Combined filter element and frame therefor
AU722679B2 (en) 1996-04-26 2000-08-10 Donaldson Company Inc. Fluted filter media
US5902364A (en) * 1996-04-26 1999-05-11 Donaldson Company, Inc. Conical filter
USD399944S (en) * 1996-04-26 1998-10-20 Donaldson Company, Inc. Conical filter
USD417268S (en) * 1996-04-26 1999-11-30 Donaldson Company, Inc. Oval filter
US5820646A (en) * 1996-04-26 1998-10-13 Donaldson Company, Inc. Inline filter apparatus
DE19632618C2 (en) * 1996-08-13 1998-06-18 Freudenberg Carl Fa Filter insert
DE19638790A1 (en) 1996-09-21 1998-03-26 Mann & Hummel Filter Air filter
KR100483406B1 (en) * 1996-10-24 2005-04-15 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 A filter device for filtering a fluid
US5730766A (en) * 1996-11-05 1998-03-24 Bha Group, Inc. Non-round unitary filter cartridge
US5782944A (en) * 1997-03-18 1998-07-21 Purolator Products Air Filtration Company Moisture resistant air filter
JP3662092B2 (en) 1997-03-21 2005-06-22 東洋▲ろ▼機製造株式会社 Filter element and manufacturing method thereof
DE19821676A1 (en) 1998-05-14 1999-11-18 Freudenberg Carl Fa Filter cassette with a filter element inserted in a rigid frame
JP3298052B2 (en) 1998-08-21 2002-07-02 豊田紡織株式会社 Air filter
US6391076B1 (en) 1999-01-29 2002-05-21 Nelson Industries, Inc. Full flow filter
US6235195B1 (en) * 1999-02-26 2001-05-22 Donaldson Company, Inc. Filter element incorporating a handle member
USD461003S1 (en) * 1999-02-26 2002-07-30 Donaldson Company, Inc. Filter element having sealing system
USD450827S1 (en) * 1999-02-26 2001-11-20 Donaldson Company, Inc. Filter element having sealing system
CN1201845C (en) * 1999-02-26 2005-05-18 唐纳森公司 Sealing system for filter
US6221122B1 (en) * 1999-02-26 2001-04-24 Donaldson Company, Inc. Filter element and methods
USD447549S1 (en) * 1999-02-26 2001-09-04 Donaldson Company, Inc. Filter frame holding flexible, irregular media
US6190432B1 (en) * 1999-02-26 2001-02-20 Donaldson Company, Inc. Filter arrangement; sealing system; and methods
US6187073B1 (en) * 1999-03-17 2001-02-13 Donaldson Company, Inc. Air cleaner; aerosol separator; and method
US6676721B1 (en) 2000-06-02 2004-01-13 Donaldson Company, Inc. Multistage air cleaner including pulse cleaning system
USD428189S (en) * 1999-07-23 2000-07-11 Joseph Mitrani Three dimensional molded trim for utilizing openings in building structures
JP3068739U (en) 1999-11-04 2000-05-16 和興産業株式会社 Air cleaner
US6348084B1 (en) * 1999-11-05 2002-02-19 Donaldson Company, Inc. Filter element, air cleaner, and methods
USD437402S1 (en) * 1999-11-05 2001-02-06 Donaldson Company, Inc. Filter element with centerpiece
US6348085B1 (en) * 1999-11-10 2002-02-19 Donaldson Company, Inc. Filter arrangement and methods
USD439963S1 (en) * 1999-12-03 2001-04-03 Donaldson Company, Inc. Panel filter
USD450828S1 (en) * 2000-06-13 2001-11-20 Donaldson Company, Inc. Fluted filter element having a handle
US6482247B2 (en) 2000-06-23 2002-11-19 Nelson Industries, Inc. Multi-panel fluid filter with equalized contaminant passages
US6375700B1 (en) 2000-06-23 2002-04-23 Nelson Industries, Inc. Direct flow filter
US20020092423A1 (en) 2000-09-05 2002-07-18 Gillingham Gary R. Methods for filtering air for a gas turbine system
US6432177B1 (en) 2000-09-12 2002-08-13 Donaldson Company, Inc. Air filter assembly for low temperature catalytic processes
DE10048740A1 (en) 2000-09-29 2002-04-11 Torras Pique Jorge A method for cleaning rainn water has an inlet leading to a hollow cylindrical filter, a drain outlet and a clean water outlet.
US6416561B1 (en) 2000-10-20 2002-07-09 Nelson Industries, Inc. Open flow filter with safety element
US6568540B1 (en) 2000-12-13 2003-05-27 Nelson Industries, Inc. Low force closure filter with integral seal
US6511599B2 (en) 2000-12-18 2003-01-28 Nelson Industries, Inc. Multi-element cylindrical filter with equalized flow
US6533847B2 (en) 2001-02-13 2003-03-18 Donaldson Company, Inc. Adsorption apparatus
US6447567B1 (en) 2001-05-14 2002-09-10 Baldwin Filters, Inc. Air filter element with integral radial seal gasket
US6517598B2 (en) * 2001-06-06 2003-02-11 Donaldson Company, Inc. Filter element having flange and methods
US6610126B2 (en) * 2001-06-06 2003-08-26 Donaldson Company, Inc. Filter element having sealing members and methods
US6852141B2 (en) * 2001-06-06 2005-02-08 Donaldson Company, Inc. Filter element having center piece and methods
JP2003126639A (en) * 2001-10-22 2003-05-07 Nippon Spindle Mfg Co Ltd Dust collection method and dust collector
DE10152552A1 (en) 2001-10-24 2003-05-08 Mann & Hummel Filter Filter element, in particular for the filtration of liquids
US6966940B2 (en) 2002-04-04 2005-11-22 Donaldson Company, Inc. Air filter cartridge
ES2379227T3 (en) * 2002-05-09 2012-04-24 Donaldson Company, Inc. Air filter with side inlet
DE10222800B4 (en) 2002-05-23 2013-06-27 Mann + Hummel Gmbh Filter in a filter housing
EP3141294B1 (en) 2002-10-28 2022-07-20 Donaldson Company, Inc. Air filter cartridge
US7300486B1 (en) 2003-04-02 2007-11-27 Wix Filtration Corp Llc Filter elements having injection molded thermoplastic seals and methods of making same
WO2005037408A1 (en) 2003-10-14 2005-04-28 Donaldson Company, Inc. Filter assembly with pleated media v-packs, and methods
CA2550734C (en) 2003-12-22 2015-06-30 Donaldson Company, Inc. Filter element comprising a seal arrangement and method for making the same
JP4664969B2 (en) 2004-03-24 2011-04-06 ドナルドソン カンパニー,インコーポレイティド Filter element, air cleaner, assembly and filtration method
CA2564883C (en) 2004-04-30 2013-12-17 Paul R. Coulonvaux Filter arrangements; housings; assemblies; and, methods
US7318851B2 (en) 2004-11-02 2008-01-15 Baldwin Filters, Inc. Filter element
US20110197556A1 (en) 2004-11-02 2011-08-18 Baldwin Filters, Inc. Filter element
US7520913B2 (en) 2005-02-04 2009-04-21 Donaldson Company, Inc. Non-cylindrical filter elements, and methods
US20080011672A1 (en) 2005-09-01 2008-01-17 Schwartz Scott W Direct Flow Filter Including Auxiliary Filter
US8409316B2 (en) 2005-11-09 2013-04-02 Donaldson Company, Inc. Seal arrangement for filter element; filter element assembly; and, methods
US7931723B2 (en) 2006-03-09 2011-04-26 Donaldson Company, Inc. Filter assembly with pleated media pockets, and methods
DE202008017059U1 (en) 2008-12-23 2010-05-12 Mann + Hummel Gmbh Filter device for internal combustion engines
KR102585171B1 (en) * 2017-08-09 2023-10-05 도날드슨 컴파니, 인코포레이티드 Filter cartridges, air cleaner assemblies, housings, features, components, and methods

Also Published As

Publication number Publication date
KR20040111482A (en) 2004-12-31
US9295936B2 (en) 2016-03-29
CA2869643A1 (en) 2003-10-16
US20140325947A1 (en) 2014-11-06
US20110296806A1 (en) 2011-12-08
CN100540113C (en) 2009-09-16
CA2730549A1 (en) 2003-10-16
EP1494785B1 (en) 2007-02-21
US11161072B2 (en) 2021-11-02
DE60311972T2 (en) 2007-11-15
MXPA04009678A (en) 2004-12-13
US20050022484A1 (en) 2005-02-03
CA2480740A1 (en) 2003-10-16
US20160271551A1 (en) 2016-09-22
AU2003226234A1 (en) 2003-10-20
US20060101795A1 (en) 2006-05-18
JP4574990B2 (en) 2010-11-04
US7008467B2 (en) 2006-03-07
US8652228B2 (en) 2014-02-18
US6966940B2 (en) 2005-11-22
WO2003084641A3 (en) 2003-12-18
CN1652859A (en) 2005-08-10
JP2015164725A (en) 2015-09-17
US7645310B2 (en) 2010-01-12
US20090145093A1 (en) 2009-06-11
CN103252126A (en) 2013-08-21
CN103252126B (en) 2016-03-09
US7491254B2 (en) 2009-02-17
US10500533B2 (en) 2019-12-10
US20200215475A1 (en) 2020-07-09
US9993763B2 (en) 2018-06-12
EP1494785A2 (en) 2005-01-12
JP5676937B2 (en) 2015-02-25
JP2010253477A (en) 2010-11-11
JP2005521554A (en) 2005-07-21
AU2003226234A8 (en) 2003-10-20
CN101698133B (en) 2013-05-01
US20030217534A1 (en) 2003-11-27
ES2282650T3 (en) 2007-10-16
JP2013176763A (en) 2013-09-09
US20100107577A1 (en) 2010-05-06
JP5676938B2 (en) 2015-02-25
CN101698133A (en) 2010-04-28
ATE354421T1 (en) 2007-03-15
JP6349363B6 (en) 2018-07-25
WO2003084641A2 (en) 2003-10-16
US7993422B2 (en) 2011-08-09
JP2013208611A (en) 2013-10-10
JP5676936B2 (en) 2015-02-25
JP2017029982A (en) 2017-02-09
US20180361301A1 (en) 2018-12-20
JP6349363B2 (en) 2018-06-27
DE60311972D1 (en) 2007-04-05
JP2010253475A (en) 2010-11-11
JP2010253476A (en) 2010-11-11

Similar Documents

Publication Publication Date Title
US11161072B2 (en) Filter elements; air cleaner; assembly; and, methods
EP1729621B1 (en) Air filter cartridge and making method
JP2010253476A5 (en)
JP2010253475A5 (en)
JP2010253477A5 (en)

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170403