Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3755993 A
Publication typeGrant
Publication dateSep 4, 1973
Filing dateJul 22, 1971
Priority dateJul 22, 1971
Publication numberUS 3755993 A, US 3755993A, US-A-3755993, US3755993 A, US3755993A
InventorsP Cote
Original AssigneeP Cote
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Disposable, vacuum cleaner bag
US 3755993 A
Abstract
A novel and inexpensive, dust-collector bag of disposable, low cost, paper-like material supported within the chamber of the shell of vacuum cleaning apparatus, the bag having one end slidably removable from the shell air inlet port and having a low cost, disposable slide-fastener, preferably of the twin-helix type constructed of plastic, adhesively sealed transversely in an opposite end opening in the bag to provide means to quickly remove the bag from the shell and to enpty out the contents and thereby allow easy and continued reuse of the bag, rather than one use and discard thereof.
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

1 51 Sept. 4,1973

1 DISPOSABLE, VACUUM CLEANER BAG [76] Inventor: Philip J. Cote, 1643 Mammoth Rd.,

Dracut, Mass.

[22] Filed: July 22, 1971 [21] Appl. No.: 165,320

Related US. Application Data [63] Continuation of Ser. No. 879,340, Nov. 24, I969,

abandoned [52] US. Cl. 55/370, 15/327 E, 24/205.13 C, 55/381, 55/DIG. 2, 55/DIG. 3, 229/62 [51] Int. Cl B0ld 46/02 [58] Field of Search 55/361, 370, 372, 55/376, DIG. 2, DIG. 3, 381; 15/327 E;

24/205.l3 C, 205.16 C

[56] References Cited UNITED STATES PATENTS 2,553,424 5/1951 Osborn 55/372 X 3,191,365 6/1965 Fceley.... 55/369 2,901,803 9/1959 Porepp... 24/205.13 C X 3,456,305 7/1969 Voit 24/205.11

2,833,372 5/1958 Lappin et al 55/376 X 2,241,601 5/1941 Kessler 55/370 X 2,932,146 4/1960 Campbell 55/361 X 3,203,551 8/1965 Van Loan, Jr... 557369 X 4/1963 Serme et al. 1. 15/327 Primary Examiner-Tim R. Miles Assistant Examiner-William Cuchlinski, Jr. Att0rneyPearson & Pearson [57] ABSTRACT A novel and inexpensive, dust-collector bag of disposable, low cost, paper-like material supported within the chamber of the shell of vacuum cleaning apparatus, the bag having one end slidably removable from the shell air inlet port and having a low cost, disposable slidefastener, preferably of the twin-helix type constructed of plastic, adhesively sealed transversely in an opposite end opening in the bag to provide means to quickly remove the bag from the shell and to enpty out the contents and thereby allow easy and continued reuse of the bag, rather than one use and discard thereof.

2 Claims, 3 Drawing Figures PATENTEBsEr 4 an PHILIP J. COTE ATTORNEYS DISPOSABLE, VACUUM CLEANER BAG This application is a continuation of my application Ser. No. 879,340, filed Nov. 24, 1969, now abandoned.

BACKGROUND OF THE INVENTION A. Field of the Invention This invention relates to a novel construction of disposable air-permeable bags such as are used in vacuum cleaners and the like.

B. Prior Art In recent years, vacuum cleaners have been developed which, contrary to the older upright vacuum cleaners, use internal, disposable, bag means to collect the dirt picked up by the suction system. These internally-Iocated disposable bags are generally subjected to higher-velocity exhaust air streams than the older bags used on the upright machines, and, as a consequence of such higher-velocity air streams, it has been necessary to increase the porosity, the dust-retentivity and the plugging-resistance characteristics of such bags. Special papers (e.g. such as that described in the U.S. Pat. No. 2,928,765 to Kurjan, wherein a more porous layer and a less porous layer of fibre are formed with an intermingling interface into a single paper) have been developed to help meet the requirements of the highvelocity vacuum-cleaner applications. Although such papers have been generally successful with respect to dirt filtering capabilities, the necessity of using such papers-has gradually increased the cost of the socalled disposable vacuum cleaner bag to the point that its disposable characteristic is a major cost factor in operation of the vacuum-cleaning equipment. These improvements in operating characteristics have resulted in a bag which, although sold as disposable, has the potential to be used several times before it becomes plugged to the point that further use is disadvantageous.

In this invention, a clear distinction is drawn between the original equipment, relatively expensive, wovenfabric dust bags, mounted exteriorly of the conventional vacuum cleaner of the upright type, such as made for years by Hoover, Hamilton-Beach and others and the Electrolux type cleaner in which a disposable bag, usually of paper, is supported within the cleaner shell and is intended to be discarded when the bag is full.

It has heretofore been proposed to install a slide fastener, usually axially of such woven-fabric, nondisposable bags, as in U.S. patents to Darst, U.S. Pat. No. 1,801,193, Norton, U.S. Pat. No. 1,876,338, Page, U.S. Pat. No. 1,894,884, and Hutchinson U.S. Pat. No. 1,914,370, the fasteners of these patents varying in length and in relative axial location, but all being exterior fabric bags with spring clamps at the end. A similar.

SUMMARY OF THE INVENTION In this invention, an interior dust-collector bag, of

throw-away, porous material, not only has the usual opening at one end by which it is connected to the vacuum, but also has a second opening, preferably extending transversely along the opposite end of the bag, the second opening having an inexpensive, throw-away, slide fastener adhesively fixed along the edges of the opening to form a sift-proof, easy opening, closure. Unlike the spring clamp device of the above mentioned Feeley patent, in which a housewife might be unaware that dirt, or lint, was causing a leak of air, the plastic, low-cost slide fastener of this invention will stick when dirty, thus warning that it should be wiped clean for perfect sealing action.

The principal object of the invention is to provide a throw-away vacuum cleaner bag with a built-in, throwaway zipper across the far end of the bag, so that the disposable bag can be easily emptied and reused until it has lost its ability to filter out dust.

Another object of the invention is to provide such a bag using a closure means which, if fouled by dirt, comprises a self-waming feature to alert the user to the fouling.

A further object of the invention is to provide a less expensive, semi-disposable, vacuum cleaner bag than has been suggested heretofore.

Other objects of the invention will be obvious to those skilled in the art on reading the instant invention.

The above objects have been substantially achieved by incorporating a slide fastener into what would normally be considered the bottom section of a collector bag, the bag preferably being of plug-resistant paper material. Use of a paper of high resistance to fouling by dirt is essential, or the bag would be useless for reuse.

Those skilled in the art would probably believe that it was uneconomical and impractical to attach an expensiveslide fastener to a cheap, disposable paper bag. However, I have discovered that such disposable paper bags may cost as much as 25 cents each on certain types of vacuum cleaners, while slide fasteners can be obtained in quantity in the garment trade for as little as 2 cents apiece for a suitable length. I have also discovered that while sewing the slide fasteners in place would seem most practical, the glueing, or other adhesive attachment of the fastener to the bag creates a sift proof sealed joint, or seam, which is most advantageous.

The slide fastener can be a zipper of the type often used in ladies clothing, for example, that type of slide fastener which comprises two ribbed and mated flexible strips locked into one another by a sliding assembly mounted on the strips, mating-helix type zippers or the like. Zippers comprising two mating helices are especially advantageous because of the economics of producing the same and their resistance to fouling. The latter factor is apparently assignable to the open loop construction forming cavities into which small pieces of dirt can be brushed by the action of the zipper during its closing. Dirt in these cavities neither interferes with the opening of the zipper nor with a sufficiently tight closing of the zipper to prevent dirt leakage therethrough.

Moreover, it is desirable to form the slide fastener from a relatively soft material, such as plastic-like nylon, polypropylene, poly (terephthalate) or the like rather than of harder metallic materials. The softer materials will allow hard pieces of grit to be embedded therein rather than scouring the surface thereof in such a way as to gradually erode the seal formed by the slide fastener.

The slide fastener should be advantageously positioned in the bag in the interior face at the far end, against which the initial dirt particles entering the bag are deposited. This positioning assures that the first dirt will be utilized as a kind of a filter media which will provide an additional protection against leakage of dirt through the filter bag at any point near the slide fastener.

The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation ofelements which will be exemplified in the article hereinafter described and the scope of the invention will be indicated in the claims.

ILLUSTRATIVE EXAMPLE OF THE INVENTION In the drawings:

FIG. 1 is a schematic view of a vacuum cleaning apparatus showing the proper positioning of collector bag with slide fastener therein.

FIG. 2 is a perspective view of a collector bag constructed according to the invention.

FIG; 3 is an enlarged view of a particularly advantageous slide fastener useful in the invention.

Referring to FIG. 1, it is seen that vacuum cleaner comprises a bag supporting shell 12 for holding apparatus which includes ablower 14 for drawing air through hose 16 into and through dust collector bag 19, received and enclosed in chamber 11, thence as a cooling stream past the blower and out of the exhaust port or outlet 17. k

Slide fastener 20, forming means to open and shut a relatively larger dirt, or dust, outlet 21 is so positioned in bag 19 that light dirt 24, initially carried into the low cost, disposable, throw-away porous paper bag body 25 of bag 19 through a smaller air inlet port 26, is carried against that face 28 of bag 19 in which slide fastener 20 is positioned and permanently attached. This is achieved by having the slide fastener 20 at the downstream side of bag 19, Le, adjacent blower 14.

Referring to FIG. 2, it is seen that bag 19 contains low cost, disposable, throw away, slide fastener means 20 comprised of twin helices 30 which are pushed together and pulled apart by sliding member 32 to form the relatively large dust outlet 21. The helices can be attached directly to the bag by adhesive, but more desirably are mounted in cloth strips 34 .which are attached to the bag 19 by the adhesive layer 35 indicated in FIG. 3.

FIG. 3 shows an enlarged view of a plastic twin-helix slide fastener of FIG. 2. Helices 30 are seen to fit rightly and accurately to present a good barrier to the passage of dust therethrough. Moreover, the plastic surfaces have a self-lubricating character that is beneficial in the indicated vacuum-cleaning application. Another particular advantage of such a closure over those known in the prior art is the fact that a housewife will be alerted to gross contamination which is likely to interfere with operation of the apparatusby a sticking action. When so alerted, the housewife can easily remove the dirt causing the sticking action, thereby avoiding any serious dust leakage from the bag after it has been inserted in the machine.

As shown in FIG. 2, the slide fastener tapes 34 are preferably slightly longer than the length of the dirt outlet 21, so that the end clip 37 projects beyond the bag at one side and the slide 32 projects beyond the bag at the other side. This permits the adhesive layer 35 to seal the portion of the fastener inside the clip 37 to the adjacent folds 38 of the bag, including the teeth 39 of the fastener, as shown at 40, to prevent leakage of air therearound. The projecting tab 42, which carries the slide 32 when closed, is also so sealed and serves as a convenient grip tab for grasping and manipulating the slide.

I claim: a

1. A disposable vacuum cleaner bag for use within the shell of a vacuum cleaner, said bag comprising:

a body of low cost, throw-away, porous material having one end with a relatively small air inlet port therein adapted for removable attachment on the inlet port of said shell, having porous side walls free of access openings, and having an enlarged dirt outlet of predetermined length at the other end thereof for emptying out the contents of said bag;

low cost, disposable, twin helix, slide fasteners of relatively soft plastic material afi'ixed to cloth tapes, said tapes being of predetermined length greater than the length of said dirt outlet and extending along the edges thereof; and

a layer of adhesive adhering said tapes to said bag to form a sift-proof sealed joint therewith;

said tapes projecting at each opposite end thereof beyond said bag to form finger grip tabs.

2. A disposable bag as specified in claim 1, wherein:

the edges of said bag on each side of said dirt outlet of predetermined length are formed by folds in the material of said bag and said tapes are adhered by said layer of adhesive to said folds.

* t t i

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2241601 *Nov 29, 1938May 13, 1941Kessler HarryVacuum cleaner bag
US2553424 *Oct 30, 1946May 15, 1951Eureka Williams CorpTank type suction cleaner
US2833372 *Jul 29, 1955May 6, 1958Lappin Robert IVacuum cleaner equipped with disposable bag
US2901803 *Jun 28, 1956Sep 1, 1959Opti Werk G M B H & CoSlider for helical-wire slide fastener
US2932146 *Sep 29, 1958Apr 12, 1960Edwin P CampbellGrass catcher for rotary mowers
US3083396 *Jan 3, 1961Apr 2, 1963Electrolux CorpVacuum cleaner controls
US3191365 *Nov 18, 1963Jun 29, 1965Feeley John MMultiple-use bag means and clamp for a vacuum cleaner
US3203551 *Aug 13, 1962Aug 31, 1965Met Chem IncFilter bag
US3456305 *Sep 9, 1966Jul 22, 1969Edward J VoitZipper kit
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3973936 *Jan 28, 1975Aug 10, 1976Sol HowardHorseshoe-shaped vacuum cleaner filter bag
US4335817 *Feb 6, 1980Jun 22, 1982Talon, Inc.Easy openable and closable bag with slide fastener
US4534752 *Apr 12, 1984Aug 13, 1985Kcl CorporationApparatus and method for securing top ends of sack gussets
US4566156 *Jul 28, 1983Jan 28, 1986Yoshida Kogyo K.K.Slide fastener
US4691370 *Apr 4, 1986Sep 1, 1987Talon, Inc.Reclosable bulk material bag with slide fastener
US5090975 *Sep 21, 1990Feb 25, 1992The Drackett CompanyHigh efficiency vacuum cleaner bags
US5819474 *Mar 31, 1997Oct 13, 1998Strom; Willard H.Temporary shelter and method of making same
US6071322 *Sep 18, 1997Jun 6, 2000Hulthen; Maj-BrittDust container for vacuum cleaners
US6148473 *Apr 6, 1999Nov 21, 2000Oreck Holdings, LlcBalanced flow vacuum cleaner
US6243916Apr 6, 1999Jun 12, 2001Oreck Holdings, LlcBalanced flow vacuum cleaner conduits
US6247844 *Nov 6, 1998Jun 19, 2001Reynolds Consumer Products, Inc.Resealable slider closure mechanism with separate plow
US6277163Apr 6, 1999Aug 21, 2001Oreck Holdings LlcVacuum cleaner outer bag
US6277164Apr 6, 1999Aug 21, 2001Oreck Holdings, LlcBalanced flow vacuum cleaner bag interface
US6280506Apr 6, 1999Aug 28, 2001Oreck Holdings, LlcVacuum cleaner inner bag
US6301744May 12, 2000Oct 16, 2001Oreck Holdings, LlcMethod for drawing a flow of air and particulates into a vacuum cleaner
US6348106Apr 6, 1999Feb 19, 2002Oreck Holdings, LlcApparatus and method for moving a flow of air and particulate through a vacuum cleaner
US6375720 *Aug 21, 2001Apr 23, 2002Oreck Holdings, LlcVacuum cleaner and method of operation
US6379408Feb 2, 2000Apr 30, 2002Oreck Holdings, LlcMounting and closure structure for a bag, such as a vacuum cleaner bag
US6536075Apr 1, 1999Mar 25, 2003Seb S.A.Waste recuperating electrical appliance with tubular filter
US6786947 *Dec 16, 2002Sep 7, 2004Robin A. MountfordWashable cloth vacuum cleaner filter bag having a resealable opening for emptying vacuumed debris
US7216572 *Mar 26, 2004May 15, 2007Richard Francis KeenanSawdust collector for table saws
US7404835 *Jan 7, 2005Jul 29, 2008Alto U.S. Inc.Collection device with self sealing retention system
US7713320 *Dec 29, 2006May 11, 2010Illinois Tool Works Inc.Evacuable bag having filter for reducing particulate contamination of vacuum valve
US8002862 *Oct 15, 2004Aug 23, 2011Eurofilters N.V.Filter bag and method for the production thereof
US8052769 *Dec 15, 2006Nov 8, 2011Eurofilters N.V.Filter bag and method for the production thereof
US8887340Dec 18, 2013Nov 18, 2014Kärcher North America, Inc.Floor cleaning apparatus
US9015887Aug 10, 2013Apr 28, 2015Kärcher North America, Inc.Floor treatment apparatus
US9192276Oct 1, 2014Nov 24, 2015Karcher North America, Inc.Floor cleaning apparatus
US9451861Mar 10, 2015Sep 27, 2016Kärcher North America, Inc.Floor treatment apparatus
US9510721Nov 11, 2015Dec 6, 2016Karcher North America, Inc.Floor cleaning apparatus
US20030009999 *Feb 23, 2001Jan 16, 2003Brad NeilsonDust collection system for a bolting machine
US20040206220 *Mar 26, 2004Oct 21, 2004Keenan Richard FrancisSawdust collector for table saws
US20060150590 *Jan 7, 2005Jul 13, 2006Alto U.S. Inc.Collection device with self sealing retention system
US20070175190 *Oct 15, 2004Aug 2, 2007Jan SchultinkFilter bag and method for the production thereof
US20080156685 *Dec 29, 2006Jul 3, 2008Linh PhamEvacuable bag having filter for reducing particulate contamination of vacuum valve
US20090090092 *Dec 15, 2006Apr 9, 2009Eurofilters N.V.Filter Bag and Method for the Production Thereof
US20150224666 *Feb 11, 2015Aug 13, 2015Rexon Industrial Corp., Ltd.Dust collector and circular saw having a dust collector
USD654234 *Dec 8, 2010Feb 14, 2012Karcher North America, Inc.Vacuum bag
USRE38998 *Jan 23, 2004Mar 7, 2006Oreck Holdings, LlcBalanced flow vacuum cleaner
WO1995001747A1 *Jun 23, 1994Jan 19, 1995Hulthen Maj BrittDust container for vacuum cleaners
WO1999051136A1 *Apr 1, 1999Oct 14, 1999Seb S.A.Waste recuperating electrical apparatus
Classifications
U.S. Classification55/370, 24/398, 55/DIG.200, 55/381, 55/DIG.300, 383/97, 15/327.7
International ClassificationA47L9/14
Cooperative ClassificationY10S55/02, A47L9/149, Y10S55/03
European ClassificationA47L9/14F