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Publication numberUS3710560 A
Publication typeGrant
Publication dateJan 16, 1973
Filing dateSep 25, 1970
Priority dateSep 25, 1970
Publication numberUS 3710560 A, US 3710560A, US-A-3710560, US3710560 A, US3710560A
InventorsMaddocks G
Original AssigneeFram Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air cleaner
US 3710560 A
Abstract
Air cleaner with supplementary air inlet in housing cover, and second cover adjacent the first and movable between first position in which air is allowed to pass through the supplementary inlet, and second position in which such supplementary air flow is impeded.
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Description  (OCR text may contain errors)

United States Patent [1 1 1 Jan. 16,1973

Maddocks 54] AIR CLEANER [75] Inventor: Gerald E. Maddocks, Chatham, On-

' tario, Canada [73] Assignee: Fram Corporation, East Providence,

[22] Filed: Sept. 25, 1970 p [211 Appl. No.: 75,357

[52] U.S. Cl. ..55/419, 55/502, 55/510, 251/63 [51] Int. Cl. ..B0ld 27/08 [58] Field of Search ..55/418, 419, 498, 510, 276, 55/502; 123/119 D, 1 27; 210/120; 251/l47,

[56] References Cited UNITED STATES PATENTS 3,459,163 8/1969 Lewis ..123/122 D Primary Examiner-Bemard Nozick Attorney-Robert E. Hillman [57] ABSTRACT Air cleaner with supplementary air inlet in housing cover, and second cover adjacent the first and movable between first position in which air is allowed to pass through the supplementary inlet, and second position in which such supplementary air flow is impeded.

3 Claims, 2 Drawing Figures AIR CLEANER This invention relates to varying the restriction to air flow through an air cleaner for an automotive vehicle.

Objects of the invention are to provide for restriction variation in an improved manner, with simple, reliable, inexpensive structure easily adapted to existing air cleaner design.

The invention features a supplementary air inlet through the air cleaner cover, and a second cover adjacent the first and arranged to move between a first position in which air is allowed to pass through the supplementary inlet and a second position in which the second cover impedes such supplementary air flow. In preferred embodiments the second cover is annular, is sealed to the main cover at radially spaced zones to define a vacuum compartment, and has a valving portion extending radially outward of the outermost seal zone to overlie a ring of supplementary inlet holes; a vacuum source is connected to the vacuum compartment to control the spacing between the two covers; and a sealing gasket is mounted radially outward of the secondary inlets to act as a valve seat for said valving portion and hence to seal between the covers when high vacuum conditions in the compartment draw down the second cover, thereby shutting off all air supply to the supplementary inlets.

Other objects, advantages, and features will be apparent from the following description of a preferred embodiment of the invention, taken together with the drawings thereof, in which FIG. 1 is a plan view of an air cleaner, partially broken away; and

FIG. 2 is a sectional view taken along 2-2 of FIG. 1.

Referring to the drawings, carburetor air cleaner is of conventional design to the extent that it includes cylindrical filter 12 supported around perforated center-tube 14 in housing 16 having a main air inlet tube 18 and an axial outlet 20.

Cover 22 is held on threaded shaft 24 by wing nut 26, and has downwardly and outwardly sloping portions 28 and 30 between which are horizontal portion 32 and upwardly sloping portion 33. Gasket 34 is fixed in the outer rim 36 of the cover and seals against outer wall 38 when the cover is tightly in place.

A ring of supplementary air inlet holes 40 is provided in sloping cover portion 30.

A second generally annular cover 50, of outside diameterless than that of cover 22, is mounted on top of cover 30, with its inner periphery 52 adhesively sealed to cover 30, and with a resilient gasket 54 adhesively sealed between cover portion 32 and corresponding horizontal portion 56 of cover 50. A sealed compartment 60 is thus formed between the two covers, and is connected to the engine manifold vacuum source (shown schematically at 61) by tube 62. Radially outward of gasket 54 cover 50 extends generally parallel to cover portion 30, over inlets 40, to above sealing gasket 64 fixed between rim 36 and openings 40.

In operation, engine vacuum manifold pressure determines the pressure in vacuum compartment 60. At low pressures (i.e., high suction) cover 50 will be drawn toward cover 22 (see phantom position in FIG. 2) until cover 50 seals against gasket 64, preventing any air flow through inlets 40. At high pressures (i.e., low suction) cover 50 moves away rom gasket 64 to allow air to flow through inlets 40, supplementing and mixing with the air flow through inlet 18, thereby decreasing the total restriction to carburetor air flow provided by the air cleaner.

Other embodiments will occur to those skilled in the art and are within the following claims.

What is claimed is:

1. In an air cleaner for a carburetor, having a filter mounted in a housing, a cover for the housing clamping means for securing the cover to the housing, a main air inlet into the housing upstream of said filter, and an outlet downstream of said filter, that improvement comprising a portion of said cover having a supplementary air inlet into said housing upstream of said filter,

a second cover overlying said first-mentioned cover adjacent said supplementary inlet, said covers being sealed to each other at radially spaced seal zones, said zones defining a vacuum compartment between said covers, said second cover having a valving portion extending radially outward of the radially outermost of said seal zones to overlie said supplementary inlet, and

a resilient gasket adhered to said covers at said outermost zone, to allow said second cover to approach and withdraw from said first-mentioned cover,

said compartment being connected to and communicating with a vacuum source to control the spacing between said covers and hence the position of said valving portion relative to said supplementary inlets.

2. The device of claim 1 further comprising a sealing gasket mounted radially outward of said secondary inlet and providing a valve seat for said valving portion of said second cover, to seal between said covers when high vacuum conditions in said vacuum compartment draw down said second cover, thereby shutting of all air supply to said supplementary inlet.

3. The device of claim 5 wherein said first-mentioned cover has inner and outer downwardly and outwardly sloping portions separated by an outwardly and upwardly sloping portion and a horizontal portion,

said second cover is sealed at its inner periphery to said first-mentioned cover and has portions extending generally parallel to said portions of said firstmentioned cover, but spaced therefrom, said second cover having a horizontal portion, aligned above said first-mentioned horizontal portion,

said resilient gasket between said covers is adhered to said horizontal portions to define said radially outermost sealing zone, I

said supplementary inlet is a ring of openings in the radially outermost of said downwardly and outwardly sloping portions of said first-mentioned cover, and

said second cover has an outside diameter less than that of said first mentioned cover.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US957347 *Sep 2, 1909May 10, 1910Nat Carbonated Liquid CoCombined stuffing-box, gasket, valve, and spring.
US2193116 *Oct 10, 1938Mar 12, 1940Maytag CoAir cleaner
US2766845 *Jun 1, 1953Oct 16, 1956Raymond Jerry WAir cleaner
US2996145 *Sep 17, 1958Aug 15, 1961Gen Motors CorpFilter sealing means
US3077715 *Oct 25, 1960Feb 19, 1963William CarrollAutomotive air intake apparatus
US3452521 *May 5, 1967Jul 1, 1969Remacle Aloys LAir filter with supplemental air inlet
US3459163 *Aug 22, 1968Aug 5, 1969Gen Motors CorpThermostatic control
US3481119 *May 31, 1968Dec 2, 1969Ford Motor CoAir cleaner construction
US3540423 *Jan 17, 1969Nov 17, 1970Westvaco CorpEvaporative emission control system
US3563010 *Oct 25, 1968Feb 16, 1971Ford Motor CoSoft top air cleaner assembly
US3612024 *Nov 3, 1969Oct 12, 1971John C BandimereAir cleaner bypass arrangement
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3849093 *Sep 15, 1972Nov 19, 1974Nippon Denso CoAir cleaner for automobiles
US3852377 *Jun 19, 1972Dec 3, 1974L HeintzelmanSpit-back for carburators
US3877908 *Mar 19, 1974Apr 15, 1975Harold Phelps IncAir filter assembly with a controlled auxiliary air inlet
US3985654 *Dec 10, 1974Oct 12, 1976Pall CorporationFilter assembly for fluid polymeric material
US4047911 *Dec 30, 1974Sep 13, 1977Dornier GmbhAir intake with deflecting device against foreign objects impinging in the initial direction of air flow at engine nacelles
US5447546 *Apr 14, 1994Sep 5, 1995Build-A-Mold LimitedCarburetor air filter and method of operation of same
US6652614Dec 4, 2000Nov 25, 2003Donaldson Company, Inc.Filter system; element configuration; and methods
US6755881 *Feb 15, 2002Jun 29, 2004Daimlerchrysler CorporationRace engine air cleaner housing
US6837920Nov 24, 2003Jan 4, 2005Donaldson Company, Inc.Filter system; element configuration; and methods
US6986805Sep 7, 2004Jan 17, 2006Donaldson Company, Inc.Filter system; element configuration; and methods
US7070642Oct 23, 2003Jul 4, 2006Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and, methods
US7291198Jan 11, 2006Nov 6, 2007Donaldson Company, Inc.Filter system; element configuration; and methods
US7524349May 2, 2006Apr 28, 2009Donaldson Company, Inc.Air cleaner; air filter cartridge and method of manufacturing
US7537631Aug 24, 2005May 26, 2009Donaldson Company, Inc.Filter cartridges; air cleaners; and methods
US7572310Nov 5, 2007Aug 11, 2009Donaldson Company, Inc.Filter system; element configuration; and methods
US7662203Jun 6, 2006Feb 16, 2010Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and, methods
US7981186Apr 6, 2009Jul 19, 2011Donaldson Company Inc.Air cleaner; air filter cartridge and method of manufacturing
US7981187Jun 30, 2009Jul 19, 2011Donaldson Company, Inc.Filter system; element configuration; and methods
US7988757Jan 15, 2010Aug 2, 2011Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and, methods
US8038756Jul 17, 2008Oct 18, 2011Donaldson Company, Inc.Air cleaner arrangements; components; and, methods
US8066791Jul 16, 2008Nov 29, 2011Donaldson Company, Inc.Air cleaner arrangements with internal and external support for cartridge; components; and, methods
US8163056Aug 15, 2006Apr 24, 2012Donaldson Company, Inc.Air cleaner having anti-rotational arrangement and methods
US8216335Aug 24, 2005Jul 10, 2012Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and methods
US8273143Oct 8, 2007Sep 25, 2012Donaldson Company, Inc.Air cleaner, replaceable filter cartridges, and methods
US8292984Jul 15, 2008Oct 23, 2012Donaldson Company, Inc.Air cleaner arrangments with end support for cartridge; components; and, methods
US8394166Jul 9, 2012Mar 12, 2013Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and, methods
US8414675Apr 2, 2008Apr 9, 2013Donaldson Company, Inc.Air cleaner; air filter cartridge and method of manufacturing
US8444735Apr 4, 2012May 21, 2013Donaldson Company, Inc.Air cleaner having anti-rotational arrangement and methods
US8460425Aug 1, 2011Jun 11, 2013Donaldson Company, Pnc.Air cleaner; replaceable filter cartridges; and, methods
US8480778Nov 28, 2011Jul 9, 2013Donaldson Company, Inc.Air cleaner arrangements; components; and, methods
US8545588Oct 17, 2011Oct 1, 2013Donaldson Company, Inc.Air cleaner arrangements; components; and, methods
US8702831Mar 11, 2013Apr 22, 2014Donaldson Company, Inc.Air cleaner; replaceable filter cartridges; and, methods
US8753415May 20, 2013Jun 17, 2014Donaldson Company, Inc.Air cleaner having anti-rotational arrangements and methods
Classifications
U.S. Classification55/419, 55/502, 55/510, 251/63
International ClassificationF02M35/02, F02M35/04, B01D46/24, B01D46/00
Cooperative ClassificationB01D2271/022, F02M35/04, B01D46/2411, B01D2279/60, B01D46/0043
European ClassificationF02M35/04, B01D46/00G2C, B01D46/24F4
Legal Events
DateCodeEventDescription
May 22, 1989ASAssignment
Owner name: BENDIX ELECTRONICS LIMITED
Free format text: CHANGE OF NAME;ASSIGNOR:BENDIX ENGINE COMPONENTS LIMITED;REEL/FRAME:005271/0503
Effective date: 19860105
Owner name: BENDIX ENGINE COMPONENTS LIMITED
Free format text: CHANGE OF NAME;ASSIGNOR:CANADIAN FRAM LIMITED;REEL/FRAME:005224/0475
Effective date: 19880911
Owner name: SIEMENS-BENDIX AUTOMOTIVE ELECTRONICS LIMITED
Free format text: MERGER;ASSIGNORS:SBAE CANADA HOLDINGS LIMITED;67393 ONTARIO LIMITED;BENDIX ELECTRONICS LIMITED;REEL/FRAME:005271/0515
Effective date: 19881001
May 22, 1989AS01Change of name
Owner name: BENDIX ELECTRONICS LIMITED
Effective date: 19860105
Owner name: BENDIX ENGINE COMPONENTS LIMITED