|Publication number||US3755993 A|
|Publication date||Sep 4, 1973|
|Filing date||Jul 22, 1971|
|Priority date||Jul 22, 1971|
|Publication number||US 3755993 A, US 3755993A, US-A-3755993, US3755993 A, US3755993A|
|Original Assignee||P Cote|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (41), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1 51 Sept. 4,1973
1 DISPOSABLE, VACUUM CLEANER BAG  Inventor: Philip J. Cote, 1643 Mammoth Rd.,
 Filed: July 22, 1971  Appl. No.: 165,320
Related US. Application Data  Continuation of Ser. No. 879,340, Nov. 24, I969,
abandoned  US. Cl. 55/370, 15/327 E, 24/205.13 C, 55/381, 55/DIG. 2, 55/DIG. 3, 229/62  Int. Cl B0ld 46/02  Field of Search 55/361, 370, 372, 55/376, DIG. 2, DIG. 3, 381; 15/327 E;
24/205.l3 C, 205.16 C
 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  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
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2241601 *||Nov 29, 1938||May 13, 1941||Kessler Harry||Vacuum cleaner bag|
|US2553424 *||Oct 30, 1946||May 15, 1951||Eureka Williams Corp||Tank type suction cleaner|
|US2833372 *||Jul 29, 1955||May 6, 1958||Lappin Robert I||Vacuum cleaner equipped with disposable bag|
|US2901803 *||Jun 28, 1956||Sep 1, 1959||Opti Werk G M B H & Co||Slider for helical-wire slide fastener|
|US2932146 *||Sep 29, 1958||Apr 12, 1960||Edwin P Campbell||Grass catcher for rotary mowers|
|US3083396 *||Jan 3, 1961||Apr 2, 1963||Electrolux Corp||Vacuum cleaner controls|
|US3191365 *||Nov 18, 1963||Jun 29, 1965||Feeley John M||Multiple-use bag means and clamp for a vacuum cleaner|
|US3203551 *||Aug 13, 1962||Aug 31, 1965||Met Chem Inc||Filter bag|
|US3456305 *||Sep 9, 1966||Jul 22, 1969||Edward J Voit||Zipper kit|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3973936 *||Jan 28, 1975||Aug 10, 1976||Sol Howard||Horseshoe-shaped vacuum cleaner filter bag|
|US4335817 *||Feb 6, 1980||Jun 22, 1982||Talon, Inc.||Easy openable and closable bag with slide fastener|
|US4534752 *||Apr 12, 1984||Aug 13, 1985||Kcl Corporation||Apparatus and method for securing top ends of sack gussets|
|US4566156 *||Jul 28, 1983||Jan 28, 1986||Yoshida Kogyo K.K.||Slide fastener|
|US4691370 *||Apr 4, 1986||Sep 1, 1987||Talon, Inc.||Reclosable bulk material bag with slide fastener|
|US5090975 *||Sep 21, 1990||Feb 25, 1992||The Drackett Company||High efficiency vacuum cleaner bags|
|US5819474 *||Mar 31, 1997||Oct 13, 1998||Strom; Willard H.||Temporary shelter and method of making same|
|US6071322 *||Sep 18, 1997||Jun 6, 2000||Hulthen; Maj-Britt||Dust container for vacuum cleaners|
|US6148473 *||Apr 6, 1999||Nov 21, 2000||Oreck Holdings, Llc||Balanced flow vacuum cleaner|
|US6243916||Apr 6, 1999||Jun 12, 2001||Oreck Holdings, Llc||Balanced flow vacuum cleaner conduits|
|US6247844 *||Nov 6, 1998||Jun 19, 2001||Reynolds Consumer Products, Inc.||Resealable slider closure mechanism with separate plow|
|US6277163||Apr 6, 1999||Aug 21, 2001||Oreck Holdings Llc||Vacuum cleaner outer bag|
|US6277164||Apr 6, 1999||Aug 21, 2001||Oreck Holdings, Llc||Balanced flow vacuum cleaner bag interface|
|US6280506||Apr 6, 1999||Aug 28, 2001||Oreck Holdings, Llc||Vacuum cleaner inner bag|
|US6301744||May 12, 2000||Oct 16, 2001||Oreck Holdings, Llc||Method for drawing a flow of air and particulates into a vacuum cleaner|
|US6348106||Apr 6, 1999||Feb 19, 2002||Oreck Holdings, Llc||Apparatus and method for moving a flow of air and particulate through a vacuum cleaner|
|US6375720 *||Aug 21, 2001||Apr 23, 2002||Oreck Holdings, Llc||Vacuum cleaner and method of operation|
|US6379408||Feb 2, 2000||Apr 30, 2002||Oreck Holdings, Llc||Mounting and closure structure for a bag, such as a vacuum cleaner bag|
|US6536075||Apr 1, 1999||Mar 25, 2003||Seb S.A.||Waste recuperating electrical appliance with tubular filter|
|US6786947 *||Dec 16, 2002||Sep 7, 2004||Robin A. Mountford||Washable cloth vacuum cleaner filter bag having a resealable opening for emptying vacuumed debris|
|US7216572 *||Mar 26, 2004||May 15, 2007||Richard Francis Keenan||Sawdust collector for table saws|
|US7404835 *||Jan 7, 2005||Jul 29, 2008||Alto U.S. Inc.||Collection device with self sealing retention system|
|US7713320 *||Dec 29, 2006||May 11, 2010||Illinois Tool Works Inc.||Evacuable bag having filter for reducing particulate contamination of vacuum valve|
|US8002862 *||Oct 15, 2004||Aug 23, 2011||Eurofilters N.V.||Filter bag and method for the production thereof|
|US8052769 *||Dec 15, 2006||Nov 8, 2011||Eurofilters N.V.||Filter bag and method for the production thereof|
|US8887340||Dec 18, 2013||Nov 18, 2014||Kärcher North America, Inc.||Floor cleaning apparatus|
|US9015887||Aug 10, 2013||Apr 28, 2015||Kärcher North America, Inc.||Floor treatment apparatus|
|US9192276||Oct 1, 2014||Nov 24, 2015||Karcher North America, Inc.||Floor cleaning apparatus|
|US9451861||Mar 10, 2015||Sep 27, 2016||Kärcher North America, Inc.||Floor treatment apparatus|
|US9510721||Nov 11, 2015||Dec 6, 2016||Karcher North America, Inc.||Floor cleaning apparatus|
|US20030009999 *||Feb 23, 2001||Jan 16, 2003||Brad Neilson||Dust collection system for a bolting machine|
|US20040206220 *||Mar 26, 2004||Oct 21, 2004||Keenan Richard Francis||Sawdust collector for table saws|
|US20060150590 *||Jan 7, 2005||Jul 13, 2006||Alto U.S. Inc.||Collection device with self sealing retention system|
|US20070175190 *||Oct 15, 2004||Aug 2, 2007||Jan Schultink||Filter bag and method for the production thereof|
|US20080156685 *||Dec 29, 2006||Jul 3, 2008||Linh Pham||Evacuable bag having filter for reducing particulate contamination of vacuum valve|
|US20090090092 *||Dec 15, 2006||Apr 9, 2009||Eurofilters N.V.||Filter Bag and Method for the Production Thereof|
|US20150224666 *||Feb 11, 2015||Aug 13, 2015||Rexon Industrial Corp., Ltd.||Dust collector and circular saw having a dust collector|
|USD654234 *||Dec 8, 2010||Feb 14, 2012||Karcher North America, Inc.||Vacuum bag|
|USRE38998 *||Jan 23, 2004||Mar 7, 2006||Oreck Holdings, Llc||Balanced flow vacuum cleaner|
|WO1995001747A1 *||Jun 23, 1994||Jan 19, 1995||Hulthen Maj Britt||Dust container for vacuum cleaners|
|WO1999051136A1 *||Apr 1, 1999||Oct 14, 1999||Seb S.A.||Waste recuperating electrical apparatus|
|U.S. Classification||55/370, 24/398, 55/DIG.200, 55/381, 55/DIG.300, 383/97, 15/327.7|
|Cooperative Classification||Y10S55/02, A47L9/149, Y10S55/03|