CA2035890C - Disposable dust bag for vacuum cleaners and the like - Google Patents
Disposable dust bag for vacuum cleaners and the likeInfo
- Publication number
- CA2035890C CA2035890C CA002035890A CA2035890A CA2035890C CA 2035890 C CA2035890 C CA 2035890C CA 002035890 A CA002035890 A CA 002035890A CA 2035890 A CA2035890 A CA 2035890A CA 2035890 C CA2035890 C CA 2035890C
- Authority
- CA
- Canada
- Prior art keywords
- connector
- bag
- collar
- projections
- adaptor
- 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
Links
- 239000000428 dust Substances 0.000 title claims abstract description 67
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 210000002445 nipple Anatomy 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 208000031481 Pathologic Constriction Diseases 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000000153 supplemental effect Effects 0.000 claims 1
- 210000000188 diaphragm Anatomy 0.000 description 28
- 238000004140 cleaning Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 241000272168 Laridae Species 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
- A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
- A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
- A47L9/1436—Connecting plates, e.g. collars, end closures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
A disposable dust bag (17) for vacuum cleaners (10) includes a mounting collar (21) removably mounted on a vacuum cleaner connector (19) through which dirt-laden air is delivered to dust bag (17). Connector (19) has a generally cylindrical outlet end (23) and peripherally spaced projections (26), (27) extending from the outer surface thereof. Collar (21) provides an opening (41) sized to closely fit the outlet through the majority of its peripheral extent and which provides peripherally spaced enlarged portion (43), (44) adapted to clear projections (26), (27) on connector (19) when bag (17) is installed and removed. Collar (21) also provides an elastomeric diaphragm (33) that tightly fits around projections (26), (27) and forms a lip seal with connector (19) to prevent leakage of dirt-laden air back along connector (19). An adaptor (84) which fits on and grips a connector (50) permits use of disposable bags (62) with mounting structures not directly coupling with the connector.
Description
1 ~~~5~ ~0 BACKGROUND OF THE INVENTION
This invention relates generally to suction or vacuum cleaners, and more particularly to a novel and improved mounting structure for removably mounting disposable dust. bags on such a cleaner.
Prior Art It is well known to provide disposable dust or filter bags for vacuum cleaners. Such bags are usually formed of a porous paper and define a chamber in which dust and dirt are <:ollected. When such bags have been used, they are removed and the bag and the dirt contained therein are discarded.
Because such bags are only used once and are discarded when full of dirt and dust, they must be economical to ;produce and market. However, the bags must be sufficientl:~r durable to permit them to be installed and removed without damage. They must also provide a connecting and sealing structure for connecting the bag to the dirt-laden air discharge of the cleaner which is easily installed and which provides a reliable seal so that all of the dirt-laden air enters the filter bag.
It ins known to provide such disposable dust bags with an inlet including a substantially rigid collar, formed of cardboard or plastic, and an elastomeric diaphragm which engages and provides a seal with a connector of t:he cleaner.
k, f 1 Examples of disposable dust bag mounting sys-2 terns are illustrated in United States Letters Patent Nos.
This invention relates generally to suction or vacuum cleaners, and more particularly to a novel and improved mounting structure for removably mounting disposable dust. bags on such a cleaner.
Prior Art It is well known to provide disposable dust or filter bags for vacuum cleaners. Such bags are usually formed of a porous paper and define a chamber in which dust and dirt are <:ollected. When such bags have been used, they are removed and the bag and the dirt contained therein are discarded.
Because such bags are only used once and are discarded when full of dirt and dust, they must be economical to ;produce and market. However, the bags must be sufficientl:~r durable to permit them to be installed and removed without damage. They must also provide a connecting and sealing structure for connecting the bag to the dirt-laden air discharge of the cleaner which is easily installed and which provides a reliable seal so that all of the dirt-laden air enters the filter bag.
It ins known to provide such disposable dust bags with an inlet including a substantially rigid collar, formed of cardboard or plastic, and an elastomeric diaphragm which engages and provides a seal with a connector of t:he cleaner.
k, f 1 Examples of disposable dust bag mounting sys-2 terns are illustrated in United States Letters Patent Nos.
3 2,975,862; 3,150,405; 3,933,451; and 4,274,847. The 4 latter of such patents disclose a mounting structure providing a rigid cardboard or plastic collar and a 6 plastic diaphragm secured to the body of the dust bag 7 around the inlet opening therein. The collar is provided 8 with an opening having an enlarged portion which is sized 9 to pass over a rib which extends around the end of the vacuum cleaner coupling. The collar opening also pro-11 vides a portion of reduced size which fits behind the 12 rib when the collar is shifted laterally to the mounted 13 position. Because of the shifting movement required, 14 the collar must be relatively large. Also, because the diaphragm tends to lock the collar in the mounted posi-16 tion, the removal of the bag after use can be difficult.
17 It is also known in the vacuum cleaner prior 18 art to provide a hose coupling that is inserted and then 19 rotated to a locked or mounted position. United States Letters lPatent No. 4,449,737 describes such a structure.
21 All of the above-mentioned patents are incorporated 22 herein by reference in their entirety to illustrate 23 various ~~rior art structures.
The present invention provides a novel and 26 improved mounting system for disposable dust bags for 27 vacuum c:Leaners and the like. The mounting system pro-28 vides a low cost structure which is easily mounted and removed and which reliably provides a stronc_r connection and a re7_iable seal.
SUBSTITUTE SHEET
1 One illustrated embodiment provides a vacuum 2 cleaner connector having a generally cylindrical wall 3 extending to an open end through which dirt-laden air is 4 discharged by the vacuum cleaner fan. Peripherally spaced projections extend from the wall substantially 6 ad;aceni_ to the open end thereof. The dust bag is pro-'1 vided with a substantially rigid collar and an elastomer 8 is diapizragm. The collar provides an opening therein having portions of reduced diameter sized to closely fit the out=r surface of the connector wall and enlarged 11 peripherally spaced portions sized to pass back and forth 12 past the connector projections when the bag is in a 13 mounting' and removal position.
14 During mounting, the collar is moved onto the connector, with the connector projections aligned with 16 the enlarged portions of the collar opening, and is then 17 rotated relative to the connector, causing the portions 1g of redu<:ed diameter to move in behind the connector 19 projections to securely lock the collar on the connector.
Removal of the bag is accomplished by reversing the 21 direction of rotation back to the mounting and removal 22 position, after which the bag is removed.
23 The elastomeric diaphragm is provided With a 24 centrally located opening having a diameter substantially smaller 'than the end of the coupling, and is adhesively 26 secured t:o the collar entirely around the collar opening.
2~ In fact, in the illustrated embodiment, the collar is 28 formed of two layers of stiff cardboard with a diaphragm 29 sandwichE~d therebetween.
As the collar is pressed past the connector 31 projections, the diaphragm is stretched over the pro-32 jections and the collar is rotated to the locked posi-33 tion. 'When in the locked position, the diaphragm 34 stretches, outwardly along the back side of the projec-SUBSTITUTE SHEET
1 tions and extends forwardly over the projections and then 2 inwardly along the forward face of the projections. This 3 engagement between the diaphragm and the projections 4 provides a tight fit and ensures that during use the collar remains in the locked position. The opening in 6 the diaphragm is initially sized so that the diaphragm 7 extends inwardly along a substantial portion of the end 8 of the connector wall with a tight fit. The diaphragm 9 provides an effective lip seal which prevents air pres-sure within the bag from causing leakage back along the 11 exterior of the coupling. The lip seal is also provided 12 along any portions of the diaphragm which extend back 13 along the outer cylindrical surface of the coupling so 14 that a reliable seal is provided.
In the illustration of the above-described 16 embodiment, the bag itself is a vertically extending, 17 elongated bag, and the inlet is spaced both from the 18 upper and lower ends of the bag. As the dirt and dust 19 collect within the bag, it tends to collect within the lower portion below the inlet, leaving the upper portion 21 of the bag substantially clear so that the air can pass 22 out of the bag without developing a high back pressure 23 which would substantially decrease the effectiveness of 24 the cleaner. When the dirt collected within the bag approaches the level of the inlet of the bag, the bag, 26 with the dirt therein, is removed and discarded so that 27 a new, empty bag can be installed.
28 In accordance with another aspect of the inven-29 tion, there is provided a separate article for~coupling types of disposable filter bags like or similar to those 31 in general usage to the connector of the invention which 32 are otherwise not adapted for direct coupling to the 33 connector. The disclosed article or adaptor is capable 34 of being installed on the connector by the user of the SUBSTITUTE SHEEN' ._. _ 1 vacuum cleaner without tools or separate fasteners. Once 2 installed, the disclosed adaptor can remain on the con-3 nector indefinitely while disposable bags, once used, are 4 removed and replaced periodically. The adaptor, as 5 disclosed, can take a variety of styles, shapes and 6 manner of~ attachment to the connector.
17 It is also known in the vacuum cleaner prior 18 art to provide a hose coupling that is inserted and then 19 rotated to a locked or mounted position. United States Letters lPatent No. 4,449,737 describes such a structure.
21 All of the above-mentioned patents are incorporated 22 herein by reference in their entirety to illustrate 23 various ~~rior art structures.
The present invention provides a novel and 26 improved mounting system for disposable dust bags for 27 vacuum c:Leaners and the like. The mounting system pro-28 vides a low cost structure which is easily mounted and removed and which reliably provides a stronc_r connection and a re7_iable seal.
SUBSTITUTE SHEET
1 One illustrated embodiment provides a vacuum 2 cleaner connector having a generally cylindrical wall 3 extending to an open end through which dirt-laden air is 4 discharged by the vacuum cleaner fan. Peripherally spaced projections extend from the wall substantially 6 ad;aceni_ to the open end thereof. The dust bag is pro-'1 vided with a substantially rigid collar and an elastomer 8 is diapizragm. The collar provides an opening therein having portions of reduced diameter sized to closely fit the out=r surface of the connector wall and enlarged 11 peripherally spaced portions sized to pass back and forth 12 past the connector projections when the bag is in a 13 mounting' and removal position.
14 During mounting, the collar is moved onto the connector, with the connector projections aligned with 16 the enlarged portions of the collar opening, and is then 17 rotated relative to the connector, causing the portions 1g of redu<:ed diameter to move in behind the connector 19 projections to securely lock the collar on the connector.
Removal of the bag is accomplished by reversing the 21 direction of rotation back to the mounting and removal 22 position, after which the bag is removed.
23 The elastomeric diaphragm is provided With a 24 centrally located opening having a diameter substantially smaller 'than the end of the coupling, and is adhesively 26 secured t:o the collar entirely around the collar opening.
2~ In fact, in the illustrated embodiment, the collar is 28 formed of two layers of stiff cardboard with a diaphragm 29 sandwichE~d therebetween.
As the collar is pressed past the connector 31 projections, the diaphragm is stretched over the pro-32 jections and the collar is rotated to the locked posi-33 tion. 'When in the locked position, the diaphragm 34 stretches, outwardly along the back side of the projec-SUBSTITUTE SHEET
1 tions and extends forwardly over the projections and then 2 inwardly along the forward face of the projections. This 3 engagement between the diaphragm and the projections 4 provides a tight fit and ensures that during use the collar remains in the locked position. The opening in 6 the diaphragm is initially sized so that the diaphragm 7 extends inwardly along a substantial portion of the end 8 of the connector wall with a tight fit. The diaphragm 9 provides an effective lip seal which prevents air pres-sure within the bag from causing leakage back along the 11 exterior of the coupling. The lip seal is also provided 12 along any portions of the diaphragm which extend back 13 along the outer cylindrical surface of the coupling so 14 that a reliable seal is provided.
In the illustration of the above-described 16 embodiment, the bag itself is a vertically extending, 17 elongated bag, and the inlet is spaced both from the 18 upper and lower ends of the bag. As the dirt and dust 19 collect within the bag, it tends to collect within the lower portion below the inlet, leaving the upper portion 21 of the bag substantially clear so that the air can pass 22 out of the bag without developing a high back pressure 23 which would substantially decrease the effectiveness of 24 the cleaner. When the dirt collected within the bag approaches the level of the inlet of the bag, the bag, 26 with the dirt therein, is removed and discarded so that 27 a new, empty bag can be installed.
28 In accordance with another aspect of the inven-29 tion, there is provided a separate article for~coupling types of disposable filter bags like or similar to those 31 in general usage to the connector of the invention which 32 are otherwise not adapted for direct coupling to the 33 connector. The disclosed article or adaptor is capable 34 of being installed on the connector by the user of the SUBSTITUTE SHEEN' ._. _ 1 vacuum cleaner without tools or separate fasteners. Once 2 installed, the disclosed adaptor can remain on the con-3 nector indefinitely while disposable bags, once used, are 4 removed and replaced periodically. The adaptor, as 5 disclosed, can take a variety of styles, shapes and 6 manner of~ attachment to the connector.
7 These and other aspects of this invention are 8 illustrated in the accompanying drawings, and are more 9 fully described in the following specification.
BRIEF DESCRIPTION OF THE DRAWINGS
11 FIG. 1 is a schematic illustration of a vacuum 12 cleaner y'ith a disposable dust bag incorporating this 13 invention installed thereon;
14 FIG. 2 is a fragmentary, perspective view, illustrating the vacuum cleaner connector and the dust 16 bag prior to the mounting of the dust bag;
FIG. 3 is a side elevation, partially in sec-18 tion, illustrating the connector and dust bag in the 19 mounting and removal position;
FIG. 3a is a fragmentary view, taken along line 21 3a - 3a of FIG. 3;
22 FIG. 4 is a side elevation, partially in sec-23 tion, illustrating the connector and dust bag in the 24 fully mounted and locked position;
FIG.4a is a fragmentary section, taken along 26 line 4a - 4a of FIG. 4;
2~ FIG. 5 is an exploded perspective view of a 28 first embodiment of an adaptor for coupling a bag assem-29 bly to th~a vacuum cleaner connector which delivers dirt laden air to the bag assembly;
31 FIG. 5a is a fragmentary cross-sectional view 32 of the components of FIG. 5 in assembled relation;
SUBSTITUTE SHEET
~: ~'~ , 1 FIG. 6 is an exploded perspective view of a 2 second embodiment of an adaptor for coupling a bag assem-3 bly to the vacuum cleaner connector;
4 FIG. 6a is a fragmentary cross-sectional view of the components of FIG. 6 in assembled relation;
6 FIG. 7 is an exploded perspective view of still 7 another embodiment of the adaptor for coupling a bag 8 assembly to the vacuum cleaner connector; and 9 FIG. 7a is a fragmentary cross-sectional view of the components of FIG. 7 in assembled relation.
12 FIG. 1 schematically illustrates a disposable 13 dust bag and mounting system incorporating the present 14 invention applied to a typical upright vacuum cleaner 10. The vacuum cleaner 10 includes a motor and fan 16 housing assembly 11. Such cleaners are particularly 17 adapted for carpet and rug cleaning, and in many in-18 stances can be provided with various types of attachments 19 for other types of cleaning operations.
In this illustrated embodiment, dirt-laden air 21 is discharged by the fan through a flexible hose 12 which 22 extends upwardly from the housing assembly 11 within a 23 cloth dust bag 13. The dust bag 13 is connected at 14 24 to the housing assembly 11, and is supported at its upper end from the handle 16 of the vacuum cleaner. A dispos-26 able dust bag 17 incorporating the present invention is 27 installed during use within the cloth dust bag 13.
28 Normally, the cloth dust bag 13 is provided with a zipper 29 18 which can be opened to provide access for the mounting and removal of the disposable dust bag 17.
SU~~TITtJTE SHEET
_........ r. ....... _ r'a ,.,.., f ~, ~ ,~,"~ f 1 Mounted on the upper end of the flexible hose 2 12 is a connector 19 which is connected to the disposable 3 dust ba~3 17, as described in greater detail below, and 4 through which dirt-laden air passes into the disposable dust back 17. The dust bag 17 is provided with a mounting 6 collar :>.1 which is removably mounted to the connector 19 7 so that all of the dirt-laden air from the cleaner enters 8 the dust; bag where the dirt is collected.
The overall structure of the connector 19 and the mounting collar of the disposable dust bag 17 is best 11 illustrated in FIG. 2. The connector 19, in the illus-~2, trated embodiment, is a molded plastic part providing a 13 generally cylindrical inlet 22 connected by suitable 14 means to the flexible hose 12 . The dirt-laden air enters the connector 19 through the inlet 22 of the connector 1.6 19 and is discharged through a generally cylindrical 17 outlet F~ortion 23, which in the illustrated embodiment 18 extends at right angles to the inlet 22.
19 Substantially adjacent to the end 24 of the outlet portion 23, the connector is provided with a pair 21 of peri~,herally spaced mounting projections 26 and 27, 22 which cooperate with the collar to securely mount the 23 collar on the connector 19 when the dust bag 17 is 24 mounted thereon. As best illustrated in FIGS. 3a and 4a, the :rearward walls 26a and 27a of the projections 16 26 and 27, respectively, extend radially and the forward 27 walls are inclined.
2g The mounting collar 21, in the illustrated 29 embodiment, includes two layers 31 and 32 of stiff, substantially rigid cardboard. which are laminated with 31 adhesive to opposite sides of an elastomeric diaphragm 32 33. The layer of cardboard 31 is also adhesively secured 33 to the wall 34 of the disposable dust bag around the 34 inlet 35 therein. The dust bag is formed of an air-~uesTrruTE sH~~r 1 permeable paper material of the general type used in the 2, past to form disposable dust bags for vacuum cleaners 3 and the like, and is f~ldPd and seamed t.~ define an 4 elongated bag structure which defines a chamber 35a in which the dirt is collected.
6 Preferably, the mounting collar ?.1 is located 7 at a l~c:ation spaced from the upper end 36 and the lower 8 end 37 of the dust bag. In use, the dirt-laden air 9 enters the bag from the connector 19 through the inlet 35, and the material forming the bag allows the air to 11 pass out through the bag 17 and the cloth dust bag 13 to 12 the environment while preventing the passage of the 13 particles of dirt entrained within the air. Such dirt 14 tends to collect in the lower part of the bag and because the inlet is spaced from the upper end 36 of the bag, the 16 upper portion of the bag remains relatively clear of 17 collected dirt so that substantially free passage of the 18 air occurs from the dust bag. In normal use, the dust 19 bag is removed and discarded along with the dirt collect-ed therein when the level of the dirt approaches the 21 level of the inlet at the mounting collar. By providing 22 the inlet at a location below the upper end of the dust 23 bag, the tendency for back pressure to be built up during 24 the use of the cleaner is minimized and the efficiency of the cleaner is maintained until the bag is substan-26 tially filled to the level of the inlet provided by the 2'1 collar 21.
28 Referring to FIGS. 2 to 4a, the two layers 31 29 and 32 of the mounting collar 21 are formed with identi-cal openings 41 therein and the diaphragm 33 is formed 31 with a circular opening 42 which is substantially small-32 er than the openings 41 in the two collar layers 31 and 33 32.
SUBSTITUTE SHEET
1 The openings 41 are circular, except for two 2 radiall~~ extending, enlarged portions 43 and 44, which 3 are sized and positioned to clear the projections 26 and 4 27 when the collar is installed on and removed from the connector 19.
6 In the illustrated embodiment, the projections 7 26 and 27 are located on the top and bottom of the outlet 8 portion of the connector 19 and the enlarged portions 43 9 and 44 are oriented with respect to the length of the bag at about 45 degrees. During installation and removal of 11 the disposable bag, the collar is oriented in an angled 12 position in which the two enlarged portions 43 and 44 are 13 aligned with the mounting projections 26 and 27, respec-14 tively, as best illustrated in FIGS. 3 and 3a. This is the mounting and removal position of the collar 21 with 16 respect to the connector 19. In such position, the 9-7 collar 21 is initially moved to the position illustrated 18 in FIG. 3a, in which the diaphragm 33 engages the end 24 19 of the connector 19, and the circular portions 40 of the opening 41 in the two layers 31 and 32 align with and 21 closely fit the exterior surface of the outlet portion 22 23 of the connector. Further, the projections 26 and 27 23 are aligned with the enlarged portions 43 and 44, respec-24 tively.
During the mounting of the bag on the connec-26 tor, the mounting collar 21 is pushed from the full-line 27 position illustrated in FIG. 3a to the phantom-line 2g position, in which the collar extends behind the projec-29 tions 26 and 27. The collar is then rotated relative to the connector 19 to the fully mounted position illus-31 trated in FIGS. 4 and 4a. In such position, the circu-32 lar portions 40 of the collar are positioned behind the 33 two projE~ctions 26 and 27, engaging the rearward walls l0 ."-1 26a and 27a. Therefore, the collar is locked onto the 2 connector.
3 As best illustrated in FIG. 3a, the diaphragm 4 opening 42 is substantially smaller than the end of the connector 19 so that as the mounting collar is~pressed 6 over the end of the connector 19, the diaphragm is 7 stretched to the position illustrated in FIG. 4a, in 8 which the diaphragm extends outwardly along the rearward 9 sides 26a and 26b of the adjacent projections 26 and 27 and inwardly along the forward side of each projection.
11 In the illustrated embodiment, the projection 26 is 12 spaced back from the end 24 of the connector 19 and the 13 projection 27 is substantially adjacent thereto. Conse-14 quently, the collar in its mounted position is inclined 75 to some extent with respect to a plane perpendicular to 16 the outlet portion 36.
17 As best illustrated in FIG. 4a, the diaphragm 18 is stretched around the exterior wall of the outlet 19 portion 23 and also extends in along the end 24 of the connector 19.
21 Because the projection 27 is located substan-22 tially at the end 24, the diaphragm along that portion 23 of the connector extends inwardly a small distance beyond 24 the end 24 but, adjacent to the projection 26, the dia-phragm engages the end 24 to a lesser extent. In any 26 event, this engagement between the diaphragm and the 27 exterior wall of the connector 19 and along the end 24 28 thereof provides a lip seal which ensures that a 29 fluidtight joint is provided between the disposable dust bag 17 and the connector. This ensures that. all of the 31 dirt-laden air passes into the disposable dust bag and 32 that no leakage occurs. By sizing the opening 42 in the 33 diaphragm substantially smaller than the end 24 of the 34 connector, it is ensured that the diaphragm maintains SUBSTITUTE SHEET
r 1 this lip seal and does not blow through and invert during 2 the operation of the cleaner.
3 Further, the diaphragm provides a very snug 4 mechanical contact with the end of the connector which frictionally maintains the dust bag in its mounted posi-6 tion and during the use of the cleaner.
When the level of dirt collected in the dust 8 bag reaches substantially to the level of the inlet provided by the mounting ring, the dust bag is rotated in the opposite direction to again bring the enlarged 11 portion; 43 and 44 into alignment with the associated 12 projections 26 and 27 and the dust bag is easily removed 13 from the connector for disposal. Subsequently, a new, 14 empty disposable dust bag is installed and cleaning operations can be continued.
16 The rotation of the collar and diaphragm with 17 respect to the end connector during the mounting and 18 removal of the disposable dust bag, as mentioned above, 19 is resisted by the frictional engagement between the diaphragm and the end of the connector 19. However, such 21 friction is not difficult to overcome and the mounting 22 and removal ~f the dust bag on the connector are easily 23 accomplished by the user. However, such friction is 24 sufficient to reliably prevent rotation of the collar back to t:he removal position during the use of the clean-26 er.
27 Preferably, the face of the collar is provided 2g with printed indicia 45 to indicate the proper position 29 for the mounting of the dust bag on the collar and for 3~ i is remo~ral .
31 With the present invention', a low-cost, reli-32 able structure is provided which can be easily installed 33 and removed by the user, and which ensures that a good 34 seal is ~~rovided between the dust bag and the connector.
i ",' 1 The connector 50 illustrated in FIGS. 5 - 7 2 has the same general configuration as that shown in the 3 earlier FIGS. 1 - 4 with the major difference being the 4 addition of a peripheral flange 51 and the mounting collar 21 of the bag 17 is mountable directly on this 6 connector 50. The connector has the shape of a tubular 7 el of round cross-section. As in the case of the earli-8 er described connector 19, the connector 50 is a thin 9 walled injection molded plastic body of suitable materi-al such as copolymer polypropylene. The outside diame-1.1 ter of the connector is nominally 2-1/2 inches while the 12 inside diameter of the connector is nominally slightly 73 less than 2-3/8 inches, by way of example, and this size 14 enables the connector and hose 12 to carry an adequate air flow without undue restriction. A lower vertical 16 end 52 of the connector 50, forming its inlet, is re-17 ceived in the flexible hose 12 in the same manner as the 18 previously described connector 19. The connector 50 19 receives dirty air, delivered from the fan of the vacuum cleaner 10 through the hose 12. An upper horizontal end 21 53 forms the outlet of the connector 50. The outlet end 2.2 53 includes a circular nipple portion 54 from which the 23 flange 51 projects. At its terminus, the exterior of 24 the nipple portion 54 has a peripheral radially extend-ing rib 56 (FIG. 6a) formed through the existence of an 26 immediately adjacent peripheral groove 57. A pair of 27 diametrically opposite projections rise radiall.y above 28 the circular periphery of the nipple portion 54 and lying 29 in a common radial plane. The projections 58 are sub-stantially identical, each having a circumferential 31 length substantially less than the circumference of the 32 nipple portion 54. The projections 58 have a limited 33 radial extent beyond the adjacent circular areas of the 34 nipple 54 and project radially from this nipple portion SUBS i STU'CE S~~~T
1 to a lesaer degree than does the flange 51. The projec-t tions 58 include walls or surfaces 59 which face 3 rearwardly away from an end face or terminus 60 of the 4 nipple portion 54.
The base of the flange 51, where it meets the 6 periphery of the circular nipple portion 54, is spaced 7 axially inward from the projections 58 at least a dis-8 tance corresponding to the thickness of a mounting collar 9 61 of a disposable bag assembly 62. The flange 51 is dished so that it is concave on a face 63 adjacent the 11 nipple end 60 and its radially outer periphery 64 is 12 closely adjacent the radial plane common to the projec-13 tions 58..
14 The exterior of the connector inward or up-stream o1: the flange 51 is relatively smooth and circu-16 lar, being devoid of any significant surface formations 17 or extensions except for a vertical bracket 66 from which 18 the connector 50 is suspended and small circumferentially 19 extendincr spaced ribs 67 that help anchor the hose l2 to the inlet. 52.
21 A disposable bag assembly 62 shown fragmen-22 tarily in FIGS. 5 - 7 is of generally known construction.
23 The bag assembly 62 comprises foldable porous sheet 24 material 69 such as paper folded or otherwise shaped into an envelope or pouch that is closed except for a mouth 26 opening 71. While the mouth opening 71 is shown as a die 27 cut circular hole, it may take other forms such as a set 28 of intersecting radial slits as is known in the art. The 29 mouth opening 71 is surrounded by a mounting collar or plate 61 permanently secured to the bag sheet stock by 3~. adhesive or other suitable means. The mounting collar 32 has a round aperture 72 aligned with the baa sheet open-33 ing or aperture 71 so that dirty air can pass into the 34 interior of the bag assembly 62 through these openings.
SUBSTITUTE SHEET
o ~3 ~ ~ 9 p :~
1 Preferably, the bag assembly 62 includes an 2 elastom~eric diaphragm seal in the form of a thin web or 3 sheet 73 permanently adhered or otherwise sandwiched 4 between two plies 74, 75 of the mounting collar 61. The rubber seal 73 has a round hole 76 aligned with the 6 collar and bag sheet apertures With a somewhat smaller 7 diameter than that of the collar aperture 72. The mount-8 ing collar 61, in the illustrated case, has its plies 9 made of cardboard that are generally planar and together form a relatively rigid structure as compared to the bag 11 sheet stock 69. In the illustrated example, the outer 12 peripheral edges 76 - 79 of the mounting collar 61 form 13 the general configuration of a rectangle although various 14 other shapes can be used. The mounting collar 61 has oppositely facing surfaces 81, 82. The inner ply 74 of 16 the collar 61 is preferably glued or otherwise permanent-17 ly attached to the bag sheet material 69 in a zone 18 circumferentially continuous about the mouth opening 71.
19 Similarly, the collar plies 74, 75 are attached to one another and to the elastomeri.c seal 73 in such a'manner 21 that air leakage paths are eliminated across their mating 22 planes in a known manner.
23 The bag assembly 62 of FIGS. 5 - 7 is intended 24 to represent a general form of disposable bag for an up-right vacuum cleaner such as that shown in FIG. 1. The 26 bag assembly 62, in accordance with the invention, can 27 be coupled to the connector 50 by an adaptor article 28 shown in various forms in FIGS. 5 - 7. The adaptor 84 29 illustrated in FIGS. 5 and 5a is a one-piece injection molded part of a suitable thermoplastic material such as 31 polypropylene. The adaptor 84 is capable of being at-32 tached t:o the connector 50 and of retaining the bag 33 assembly 62 in coupled relation to the connector. The 34 adaptor of FIG. 5 comprises a generally flat plate body sues~-u-rE s H F E-r ~'~~,~~~" ~~' 1 86 with a central aperture 87 arranged to fit over the 2 nipple end portion 54 of the connector 50. The profile 3 of the opening 87 includes arcs 88 of a common circle 4 interrupted by circumferentially extending notches 89 of 5 a radius larger than that of the arcs. The profile of 6 the opening 87 is analogous to the openings 41 in the 7 mountin~~ collar 21 of the bag illustrated in FIGS. 2 -8 4. That is to say, the opening 87 is complementary to 9 the circular shape of the outlet nipple 54 and associated 10 projections 58 of the connector 50.
11 The adaptor 84 is installed ordinarily by the 12 user of a vacuum cleaner, on the connector 50 by angular-13 ly aligning the notches 89 with the projections 58, 14 pushing the adaptor plate 86 over the nipple end 60 15 towards the flange 51 axially past parts of the projec-16 tions 58 and finally rotating the adaptor 84 on the 17 outlet nipple so that the notches 89 and projections 58 18 are misaligned. In this installed condition marginal 19 areas of the adaptor plate body 86 around the opening 87 are trapped behind and grip the rearward or reverse 21 surfaces 59 of the projections thereby preventing sepa-22 ration of the adaptor from the connector. The gripping 23 capability of the adaptor on the projections 58 is suffi-24 cient to withstand air pressure forces tending to sepa-rate they bag assembly from the connector when the bag 26 assembly 62, as described below, is installed.
27 At one edge, the adaptor 84 has a channel 91 28 proportioned to receive a lower edge 79 of the mounting 29 collar 61. The channel or slot 91 includes a surface 92 that grips the bag mounting collar 61 through its 31 reverse face, i.e. the face 82 facing towards the inte-32 rior of the bag assembly 62. On a side of the adaptor 33 84 opposite the channel 91 there is provided a hook 93 34 for grip~~ing the margin or edge 76 of the bag collar 61 SUBSTITUTE SHEET
7~~~r '~i~
1 at its reverse face 82. The hook 93 is pivotal about an 2 integral or living hinge 94 that is provided by a inte-3 grally molded bracket 96. The hook 93 has a catch sur-4 face 97 adapted to grip the reverse collar face 82.
ThP bag asspmhly 6?. is coupled t.c the connec-6 for by first positioning the lower mounting collar edge 7 79 in the adaptor channel 91. The upper edge 76 is 8 thereafter pushed against an angled surface 98 of the 9 hook 93 causing the hook to rise by pivoting about the hinge 94. The upper collar edge 76 slips under the hook 11 and the natural elasticity of the hinge 94 causes the 12 hook to snap over the bag collar permitting the catch 13 surface 97 to grip the reverse face 82 of the mounting 14 collar 61. As illustrated in FIG. 5a, the apertures 72, 71 of the bag collar and bag sheet are sufficiently large 16 to pass over the connector nipple portion 54. The elas-17 tomeric seal 73 forms a lip seal over the r~ b 56 prevent-18 ing axial leakage of air at this point.
19 With the various elements assembled as illus-trated in FIG. 5a, the adaptor is effective to retain 21 the bag assembly 62 in coupled relation with the connec-22 for 50 with sufficient gripping force on both the con-23 nector and the bag assembly to withstand air pressure 24 forces ordinarily encountered in the operation of the vacuum cleaner and thereby prevent unwanted release of 26 the bag assembly from the connector.
27 FIG. 6 illustrates another form of an adaptor 28 184 for coupling a bag assembly 162 to the connector 50.
29 Elements that are essentially structurally and function-3C ally the same as those found in the adaptor 84 of FIG.
31 5 are designated with identical numerals. The adaptor 3~ 184 which can be a unitary injection molded thermoplas-33 tic part has a generally planar plate-like body 101. A
34 lower edge of the body 101 includes a channel 191 provid-sues~r~uTE sHEE-r _ _.___.. r _ 1 ing a b~~g collar gripping surface 192. Approximately at 2 its geometric center, the plate body 101 has a circular 3 tube 10:~ with an axis extending perpendicularly to the 4 plane of the body. The tube 102 has an inside diameter dimensioned to fit over the nipple portion 54 of the 6 connector 50. Adjacent one end, the tube 102 includes 7 a radial.ly inwardly extending flange 103. A face 104 of 8 the flange 103 is conical or concave. The adaptor 184 9 is instilled on the connector 50 by applying a pushing force to drive the flange face 104 against the projec-11 tions 5.8. The conical orientation of this face 104 12 causes i~he flange 103 to expand locally radially out-13 wardly over the projections and allows the flange 103 to 14 enter the space between the projections 58 and flange 51.
In this position, a reverse face or surface 106 of the 16 flange 103 grips the rearward faces 59 of the projections 17 58 to securely retain the adaptor 184 on the connector 18 50. The inner periphery of the flange 103 forms a cir-19 cumferential airtight seal against the outer periphery of the nipple portion 54.
21 The bag assembly 162 is substantially the same 22 as the b,ag assembly 62 described in connection with FIG.
23 5 except that a somewhat larger aperture 172 is provided 24 in the bag mounting collar 161 to enable the collar to slip over the outside of the tube 102. Other parts of 26 the bag assembly 162 which are essentially the same in 27 construction and function as those of the assembly 62 28 are desi~~nated with the same numerals. The bag assembly 29 162 is installed in generally the same manner as the assembly 62. It will be seen, however, that the elasto-31 meric seal 73 envelopes and circumferentially seals an 32 end portion 107 of the tube 102 rather than sealing 33 directly on a surface of the connector 50. The bag SUBSTITUTE S H E ET
.~~t .(,i~
1 assembly 162, however, is sealed to the connector 50 by 2 the tube flange 103.
3 FIG. 7 illustrates still another form of an 4 adaptor 284. The adaptor 284 like the earlier examples, can be an integral body formed, for example, as an injec-6 tion molded thermoplastic part. The adaptor 284 includes '1 a genera l.ly planar main body plate 111 that has a central 8 slot 112 extending vertically from a lower edge 113 to its midsection. The slot has a Width the same as or slightly wider than the outside diameter of the connec-11 for 50. A channel 291 on the lower edge 113 of the plate 12 111 is adapted to receive the lower edge of the bag 13 assembly mounting collar 61.
14 The adaptor 284 is installed by passing it over the outlet nipple portion 54 inward (upstream) of the 16 flange 51 and sliding it downwardly so that an end or 17 bight 114 of the slot 112 rests against the outside 18 diameter of the outlet nipple. The edge of the slot 112 19 at and adjacent this bight 114 grip the outlet nipple 54 at the base of the flange 51 to resist bag separation 21 forces. The bag assembly 62 is coupled to the connector 22 50 by the adaptor 284 in essentially the same manner as 23 before described with reference to the adaptor 84.
24 The various disclosed adaptors 84, 184 and 284 can be installed by the user of a vacuum cleaner with 26 simple manipulative steps and without the use of separate 2~ tools or fasteners. The disclosed adaptors can remain 28 attached to the connector 50 indefinitely and bags can 29 be periodically removed from the adaptor and connector when filled to capacity and replaced with a new bag.
31 Other styles of bag adaptors utilizing the principles of 32 the invention are envisioned. The adaptor can be ar-33 ranged to be removable with the bag or can be arranged 34 to be installed after the bag is positioned on~the con-SUBSTITUTE SHEET
~_v~P~~,~
1 nector. Additionally, the adaptor can be constructed to 2 work with other bag mounting collars such as a round 3 collar. Further, the adaptor can be structured to grip 4 connector surfaces other than those already described such as the vertical cylindrical wall, adjacent the zone 6 where ii. intercepts with the horizontal cylindrical wall, 7 or the interior of the outlet nipple.
8 While the invention has been shown and de-9 scribed with respect to particular embodiments thereof, this is. for the purpose of illustration rather than 11 limitation, and other variations and modifications of 12 the specific embodiments herein shown and described will 13 be apparent to those skilled in the art all within the 14 intended spirit and scope of the invention. According-ly, the patent is not to be limited in scope and effect 16 to the specific embodiments herein shown and described 17 nor in any other way that is inconsistent with the extent 18 to which the progress in the art has been advanced by the 19 invention.
8u8STITUTE s H E ~r
BRIEF DESCRIPTION OF THE DRAWINGS
11 FIG. 1 is a schematic illustration of a vacuum 12 cleaner y'ith a disposable dust bag incorporating this 13 invention installed thereon;
14 FIG. 2 is a fragmentary, perspective view, illustrating the vacuum cleaner connector and the dust 16 bag prior to the mounting of the dust bag;
FIG. 3 is a side elevation, partially in sec-18 tion, illustrating the connector and dust bag in the 19 mounting and removal position;
FIG. 3a is a fragmentary view, taken along line 21 3a - 3a of FIG. 3;
22 FIG. 4 is a side elevation, partially in sec-23 tion, illustrating the connector and dust bag in the 24 fully mounted and locked position;
FIG.4a is a fragmentary section, taken along 26 line 4a - 4a of FIG. 4;
2~ FIG. 5 is an exploded perspective view of a 28 first embodiment of an adaptor for coupling a bag assem-29 bly to th~a vacuum cleaner connector which delivers dirt laden air to the bag assembly;
31 FIG. 5a is a fragmentary cross-sectional view 32 of the components of FIG. 5 in assembled relation;
SUBSTITUTE SHEET
~: ~'~ , 1 FIG. 6 is an exploded perspective view of a 2 second embodiment of an adaptor for coupling a bag assem-3 bly to the vacuum cleaner connector;
4 FIG. 6a is a fragmentary cross-sectional view of the components of FIG. 6 in assembled relation;
6 FIG. 7 is an exploded perspective view of still 7 another embodiment of the adaptor for coupling a bag 8 assembly to the vacuum cleaner connector; and 9 FIG. 7a is a fragmentary cross-sectional view of the components of FIG. 7 in assembled relation.
12 FIG. 1 schematically illustrates a disposable 13 dust bag and mounting system incorporating the present 14 invention applied to a typical upright vacuum cleaner 10. The vacuum cleaner 10 includes a motor and fan 16 housing assembly 11. Such cleaners are particularly 17 adapted for carpet and rug cleaning, and in many in-18 stances can be provided with various types of attachments 19 for other types of cleaning operations.
In this illustrated embodiment, dirt-laden air 21 is discharged by the fan through a flexible hose 12 which 22 extends upwardly from the housing assembly 11 within a 23 cloth dust bag 13. The dust bag 13 is connected at 14 24 to the housing assembly 11, and is supported at its upper end from the handle 16 of the vacuum cleaner. A dispos-26 able dust bag 17 incorporating the present invention is 27 installed during use within the cloth dust bag 13.
28 Normally, the cloth dust bag 13 is provided with a zipper 29 18 which can be opened to provide access for the mounting and removal of the disposable dust bag 17.
SU~~TITtJTE SHEET
_........ r. ....... _ r'a ,.,.., f ~, ~ ,~,"~ f 1 Mounted on the upper end of the flexible hose 2 12 is a connector 19 which is connected to the disposable 3 dust ba~3 17, as described in greater detail below, and 4 through which dirt-laden air passes into the disposable dust back 17. The dust bag 17 is provided with a mounting 6 collar :>.1 which is removably mounted to the connector 19 7 so that all of the dirt-laden air from the cleaner enters 8 the dust; bag where the dirt is collected.
The overall structure of the connector 19 and the mounting collar of the disposable dust bag 17 is best 11 illustrated in FIG. 2. The connector 19, in the illus-~2, trated embodiment, is a molded plastic part providing a 13 generally cylindrical inlet 22 connected by suitable 14 means to the flexible hose 12 . The dirt-laden air enters the connector 19 through the inlet 22 of the connector 1.6 19 and is discharged through a generally cylindrical 17 outlet F~ortion 23, which in the illustrated embodiment 18 extends at right angles to the inlet 22.
19 Substantially adjacent to the end 24 of the outlet portion 23, the connector is provided with a pair 21 of peri~,herally spaced mounting projections 26 and 27, 22 which cooperate with the collar to securely mount the 23 collar on the connector 19 when the dust bag 17 is 24 mounted thereon. As best illustrated in FIGS. 3a and 4a, the :rearward walls 26a and 27a of the projections 16 26 and 27, respectively, extend radially and the forward 27 walls are inclined.
2g The mounting collar 21, in the illustrated 29 embodiment, includes two layers 31 and 32 of stiff, substantially rigid cardboard. which are laminated with 31 adhesive to opposite sides of an elastomeric diaphragm 32 33. The layer of cardboard 31 is also adhesively secured 33 to the wall 34 of the disposable dust bag around the 34 inlet 35 therein. The dust bag is formed of an air-~uesTrruTE sH~~r 1 permeable paper material of the general type used in the 2, past to form disposable dust bags for vacuum cleaners 3 and the like, and is f~ldPd and seamed t.~ define an 4 elongated bag structure which defines a chamber 35a in which the dirt is collected.
6 Preferably, the mounting collar ?.1 is located 7 at a l~c:ation spaced from the upper end 36 and the lower 8 end 37 of the dust bag. In use, the dirt-laden air 9 enters the bag from the connector 19 through the inlet 35, and the material forming the bag allows the air to 11 pass out through the bag 17 and the cloth dust bag 13 to 12 the environment while preventing the passage of the 13 particles of dirt entrained within the air. Such dirt 14 tends to collect in the lower part of the bag and because the inlet is spaced from the upper end 36 of the bag, the 16 upper portion of the bag remains relatively clear of 17 collected dirt so that substantially free passage of the 18 air occurs from the dust bag. In normal use, the dust 19 bag is removed and discarded along with the dirt collect-ed therein when the level of the dirt approaches the 21 level of the inlet at the mounting collar. By providing 22 the inlet at a location below the upper end of the dust 23 bag, the tendency for back pressure to be built up during 24 the use of the cleaner is minimized and the efficiency of the cleaner is maintained until the bag is substan-26 tially filled to the level of the inlet provided by the 2'1 collar 21.
28 Referring to FIGS. 2 to 4a, the two layers 31 29 and 32 of the mounting collar 21 are formed with identi-cal openings 41 therein and the diaphragm 33 is formed 31 with a circular opening 42 which is substantially small-32 er than the openings 41 in the two collar layers 31 and 33 32.
SUBSTITUTE SHEET
1 The openings 41 are circular, except for two 2 radiall~~ extending, enlarged portions 43 and 44, which 3 are sized and positioned to clear the projections 26 and 4 27 when the collar is installed on and removed from the connector 19.
6 In the illustrated embodiment, the projections 7 26 and 27 are located on the top and bottom of the outlet 8 portion of the connector 19 and the enlarged portions 43 9 and 44 are oriented with respect to the length of the bag at about 45 degrees. During installation and removal of 11 the disposable bag, the collar is oriented in an angled 12 position in which the two enlarged portions 43 and 44 are 13 aligned with the mounting projections 26 and 27, respec-14 tively, as best illustrated in FIGS. 3 and 3a. This is the mounting and removal position of the collar 21 with 16 respect to the connector 19. In such position, the 9-7 collar 21 is initially moved to the position illustrated 18 in FIG. 3a, in which the diaphragm 33 engages the end 24 19 of the connector 19, and the circular portions 40 of the opening 41 in the two layers 31 and 32 align with and 21 closely fit the exterior surface of the outlet portion 22 23 of the connector. Further, the projections 26 and 27 23 are aligned with the enlarged portions 43 and 44, respec-24 tively.
During the mounting of the bag on the connec-26 tor, the mounting collar 21 is pushed from the full-line 27 position illustrated in FIG. 3a to the phantom-line 2g position, in which the collar extends behind the projec-29 tions 26 and 27. The collar is then rotated relative to the connector 19 to the fully mounted position illus-31 trated in FIGS. 4 and 4a. In such position, the circu-32 lar portions 40 of the collar are positioned behind the 33 two projE~ctions 26 and 27, engaging the rearward walls l0 ."-1 26a and 27a. Therefore, the collar is locked onto the 2 connector.
3 As best illustrated in FIG. 3a, the diaphragm 4 opening 42 is substantially smaller than the end of the connector 19 so that as the mounting collar is~pressed 6 over the end of the connector 19, the diaphragm is 7 stretched to the position illustrated in FIG. 4a, in 8 which the diaphragm extends outwardly along the rearward 9 sides 26a and 26b of the adjacent projections 26 and 27 and inwardly along the forward side of each projection.
11 In the illustrated embodiment, the projection 26 is 12 spaced back from the end 24 of the connector 19 and the 13 projection 27 is substantially adjacent thereto. Conse-14 quently, the collar in its mounted position is inclined 75 to some extent with respect to a plane perpendicular to 16 the outlet portion 36.
17 As best illustrated in FIG. 4a, the diaphragm 18 is stretched around the exterior wall of the outlet 19 portion 23 and also extends in along the end 24 of the connector 19.
21 Because the projection 27 is located substan-22 tially at the end 24, the diaphragm along that portion 23 of the connector extends inwardly a small distance beyond 24 the end 24 but, adjacent to the projection 26, the dia-phragm engages the end 24 to a lesser extent. In any 26 event, this engagement between the diaphragm and the 27 exterior wall of the connector 19 and along the end 24 28 thereof provides a lip seal which ensures that a 29 fluidtight joint is provided between the disposable dust bag 17 and the connector. This ensures that. all of the 31 dirt-laden air passes into the disposable dust bag and 32 that no leakage occurs. By sizing the opening 42 in the 33 diaphragm substantially smaller than the end 24 of the 34 connector, it is ensured that the diaphragm maintains SUBSTITUTE SHEET
r 1 this lip seal and does not blow through and invert during 2 the operation of the cleaner.
3 Further, the diaphragm provides a very snug 4 mechanical contact with the end of the connector which frictionally maintains the dust bag in its mounted posi-6 tion and during the use of the cleaner.
When the level of dirt collected in the dust 8 bag reaches substantially to the level of the inlet provided by the mounting ring, the dust bag is rotated in the opposite direction to again bring the enlarged 11 portion; 43 and 44 into alignment with the associated 12 projections 26 and 27 and the dust bag is easily removed 13 from the connector for disposal. Subsequently, a new, 14 empty disposable dust bag is installed and cleaning operations can be continued.
16 The rotation of the collar and diaphragm with 17 respect to the end connector during the mounting and 18 removal of the disposable dust bag, as mentioned above, 19 is resisted by the frictional engagement between the diaphragm and the end of the connector 19. However, such 21 friction is not difficult to overcome and the mounting 22 and removal ~f the dust bag on the connector are easily 23 accomplished by the user. However, such friction is 24 sufficient to reliably prevent rotation of the collar back to t:he removal position during the use of the clean-26 er.
27 Preferably, the face of the collar is provided 2g with printed indicia 45 to indicate the proper position 29 for the mounting of the dust bag on the collar and for 3~ i is remo~ral .
31 With the present invention', a low-cost, reli-32 able structure is provided which can be easily installed 33 and removed by the user, and which ensures that a good 34 seal is ~~rovided between the dust bag and the connector.
i ",' 1 The connector 50 illustrated in FIGS. 5 - 7 2 has the same general configuration as that shown in the 3 earlier FIGS. 1 - 4 with the major difference being the 4 addition of a peripheral flange 51 and the mounting collar 21 of the bag 17 is mountable directly on this 6 connector 50. The connector has the shape of a tubular 7 el of round cross-section. As in the case of the earli-8 er described connector 19, the connector 50 is a thin 9 walled injection molded plastic body of suitable materi-al such as copolymer polypropylene. The outside diame-1.1 ter of the connector is nominally 2-1/2 inches while the 12 inside diameter of the connector is nominally slightly 73 less than 2-3/8 inches, by way of example, and this size 14 enables the connector and hose 12 to carry an adequate air flow without undue restriction. A lower vertical 16 end 52 of the connector 50, forming its inlet, is re-17 ceived in the flexible hose 12 in the same manner as the 18 previously described connector 19. The connector 50 19 receives dirty air, delivered from the fan of the vacuum cleaner 10 through the hose 12. An upper horizontal end 21 53 forms the outlet of the connector 50. The outlet end 2.2 53 includes a circular nipple portion 54 from which the 23 flange 51 projects. At its terminus, the exterior of 24 the nipple portion 54 has a peripheral radially extend-ing rib 56 (FIG. 6a) formed through the existence of an 26 immediately adjacent peripheral groove 57. A pair of 27 diametrically opposite projections rise radiall.y above 28 the circular periphery of the nipple portion 54 and lying 29 in a common radial plane. The projections 58 are sub-stantially identical, each having a circumferential 31 length substantially less than the circumference of the 32 nipple portion 54. The projections 58 have a limited 33 radial extent beyond the adjacent circular areas of the 34 nipple 54 and project radially from this nipple portion SUBS i STU'CE S~~~T
1 to a lesaer degree than does the flange 51. The projec-t tions 58 include walls or surfaces 59 which face 3 rearwardly away from an end face or terminus 60 of the 4 nipple portion 54.
The base of the flange 51, where it meets the 6 periphery of the circular nipple portion 54, is spaced 7 axially inward from the projections 58 at least a dis-8 tance corresponding to the thickness of a mounting collar 9 61 of a disposable bag assembly 62. The flange 51 is dished so that it is concave on a face 63 adjacent the 11 nipple end 60 and its radially outer periphery 64 is 12 closely adjacent the radial plane common to the projec-13 tions 58..
14 The exterior of the connector inward or up-stream o1: the flange 51 is relatively smooth and circu-16 lar, being devoid of any significant surface formations 17 or extensions except for a vertical bracket 66 from which 18 the connector 50 is suspended and small circumferentially 19 extendincr spaced ribs 67 that help anchor the hose l2 to the inlet. 52.
21 A disposable bag assembly 62 shown fragmen-22 tarily in FIGS. 5 - 7 is of generally known construction.
23 The bag assembly 62 comprises foldable porous sheet 24 material 69 such as paper folded or otherwise shaped into an envelope or pouch that is closed except for a mouth 26 opening 71. While the mouth opening 71 is shown as a die 27 cut circular hole, it may take other forms such as a set 28 of intersecting radial slits as is known in the art. The 29 mouth opening 71 is surrounded by a mounting collar or plate 61 permanently secured to the bag sheet stock by 3~. adhesive or other suitable means. The mounting collar 32 has a round aperture 72 aligned with the baa sheet open-33 ing or aperture 71 so that dirty air can pass into the 34 interior of the bag assembly 62 through these openings.
SUBSTITUTE SHEET
o ~3 ~ ~ 9 p :~
1 Preferably, the bag assembly 62 includes an 2 elastom~eric diaphragm seal in the form of a thin web or 3 sheet 73 permanently adhered or otherwise sandwiched 4 between two plies 74, 75 of the mounting collar 61. The rubber seal 73 has a round hole 76 aligned with the 6 collar and bag sheet apertures With a somewhat smaller 7 diameter than that of the collar aperture 72. The mount-8 ing collar 61, in the illustrated case, has its plies 9 made of cardboard that are generally planar and together form a relatively rigid structure as compared to the bag 11 sheet stock 69. In the illustrated example, the outer 12 peripheral edges 76 - 79 of the mounting collar 61 form 13 the general configuration of a rectangle although various 14 other shapes can be used. The mounting collar 61 has oppositely facing surfaces 81, 82. The inner ply 74 of 16 the collar 61 is preferably glued or otherwise permanent-17 ly attached to the bag sheet material 69 in a zone 18 circumferentially continuous about the mouth opening 71.
19 Similarly, the collar plies 74, 75 are attached to one another and to the elastomeri.c seal 73 in such a'manner 21 that air leakage paths are eliminated across their mating 22 planes in a known manner.
23 The bag assembly 62 of FIGS. 5 - 7 is intended 24 to represent a general form of disposable bag for an up-right vacuum cleaner such as that shown in FIG. 1. The 26 bag assembly 62, in accordance with the invention, can 27 be coupled to the connector 50 by an adaptor article 28 shown in various forms in FIGS. 5 - 7. The adaptor 84 29 illustrated in FIGS. 5 and 5a is a one-piece injection molded part of a suitable thermoplastic material such as 31 polypropylene. The adaptor 84 is capable of being at-32 tached t:o the connector 50 and of retaining the bag 33 assembly 62 in coupled relation to the connector. The 34 adaptor of FIG. 5 comprises a generally flat plate body sues~-u-rE s H F E-r ~'~~,~~~" ~~' 1 86 with a central aperture 87 arranged to fit over the 2 nipple end portion 54 of the connector 50. The profile 3 of the opening 87 includes arcs 88 of a common circle 4 interrupted by circumferentially extending notches 89 of 5 a radius larger than that of the arcs. The profile of 6 the opening 87 is analogous to the openings 41 in the 7 mountin~~ collar 21 of the bag illustrated in FIGS. 2 -8 4. That is to say, the opening 87 is complementary to 9 the circular shape of the outlet nipple 54 and associated 10 projections 58 of the connector 50.
11 The adaptor 84 is installed ordinarily by the 12 user of a vacuum cleaner, on the connector 50 by angular-13 ly aligning the notches 89 with the projections 58, 14 pushing the adaptor plate 86 over the nipple end 60 15 towards the flange 51 axially past parts of the projec-16 tions 58 and finally rotating the adaptor 84 on the 17 outlet nipple so that the notches 89 and projections 58 18 are misaligned. In this installed condition marginal 19 areas of the adaptor plate body 86 around the opening 87 are trapped behind and grip the rearward or reverse 21 surfaces 59 of the projections thereby preventing sepa-22 ration of the adaptor from the connector. The gripping 23 capability of the adaptor on the projections 58 is suffi-24 cient to withstand air pressure forces tending to sepa-rate they bag assembly from the connector when the bag 26 assembly 62, as described below, is installed.
27 At one edge, the adaptor 84 has a channel 91 28 proportioned to receive a lower edge 79 of the mounting 29 collar 61. The channel or slot 91 includes a surface 92 that grips the bag mounting collar 61 through its 31 reverse face, i.e. the face 82 facing towards the inte-32 rior of the bag assembly 62. On a side of the adaptor 33 84 opposite the channel 91 there is provided a hook 93 34 for grip~~ing the margin or edge 76 of the bag collar 61 SUBSTITUTE SHEET
7~~~r '~i~
1 at its reverse face 82. The hook 93 is pivotal about an 2 integral or living hinge 94 that is provided by a inte-3 grally molded bracket 96. The hook 93 has a catch sur-4 face 97 adapted to grip the reverse collar face 82.
ThP bag asspmhly 6?. is coupled t.c the connec-6 for by first positioning the lower mounting collar edge 7 79 in the adaptor channel 91. The upper edge 76 is 8 thereafter pushed against an angled surface 98 of the 9 hook 93 causing the hook to rise by pivoting about the hinge 94. The upper collar edge 76 slips under the hook 11 and the natural elasticity of the hinge 94 causes the 12 hook to snap over the bag collar permitting the catch 13 surface 97 to grip the reverse face 82 of the mounting 14 collar 61. As illustrated in FIG. 5a, the apertures 72, 71 of the bag collar and bag sheet are sufficiently large 16 to pass over the connector nipple portion 54. The elas-17 tomeric seal 73 forms a lip seal over the r~ b 56 prevent-18 ing axial leakage of air at this point.
19 With the various elements assembled as illus-trated in FIG. 5a, the adaptor is effective to retain 21 the bag assembly 62 in coupled relation with the connec-22 for 50 with sufficient gripping force on both the con-23 nector and the bag assembly to withstand air pressure 24 forces ordinarily encountered in the operation of the vacuum cleaner and thereby prevent unwanted release of 26 the bag assembly from the connector.
27 FIG. 6 illustrates another form of an adaptor 28 184 for coupling a bag assembly 162 to the connector 50.
29 Elements that are essentially structurally and function-3C ally the same as those found in the adaptor 84 of FIG.
31 5 are designated with identical numerals. The adaptor 3~ 184 which can be a unitary injection molded thermoplas-33 tic part has a generally planar plate-like body 101. A
34 lower edge of the body 101 includes a channel 191 provid-sues~r~uTE sHEE-r _ _.___.. r _ 1 ing a b~~g collar gripping surface 192. Approximately at 2 its geometric center, the plate body 101 has a circular 3 tube 10:~ with an axis extending perpendicularly to the 4 plane of the body. The tube 102 has an inside diameter dimensioned to fit over the nipple portion 54 of the 6 connector 50. Adjacent one end, the tube 102 includes 7 a radial.ly inwardly extending flange 103. A face 104 of 8 the flange 103 is conical or concave. The adaptor 184 9 is instilled on the connector 50 by applying a pushing force to drive the flange face 104 against the projec-11 tions 5.8. The conical orientation of this face 104 12 causes i~he flange 103 to expand locally radially out-13 wardly over the projections and allows the flange 103 to 14 enter the space between the projections 58 and flange 51.
In this position, a reverse face or surface 106 of the 16 flange 103 grips the rearward faces 59 of the projections 17 58 to securely retain the adaptor 184 on the connector 18 50. The inner periphery of the flange 103 forms a cir-19 cumferential airtight seal against the outer periphery of the nipple portion 54.
21 The bag assembly 162 is substantially the same 22 as the b,ag assembly 62 described in connection with FIG.
23 5 except that a somewhat larger aperture 172 is provided 24 in the bag mounting collar 161 to enable the collar to slip over the outside of the tube 102. Other parts of 26 the bag assembly 162 which are essentially the same in 27 construction and function as those of the assembly 62 28 are desi~~nated with the same numerals. The bag assembly 29 162 is installed in generally the same manner as the assembly 62. It will be seen, however, that the elasto-31 meric seal 73 envelopes and circumferentially seals an 32 end portion 107 of the tube 102 rather than sealing 33 directly on a surface of the connector 50. The bag SUBSTITUTE S H E ET
.~~t .(,i~
1 assembly 162, however, is sealed to the connector 50 by 2 the tube flange 103.
3 FIG. 7 illustrates still another form of an 4 adaptor 284. The adaptor 284 like the earlier examples, can be an integral body formed, for example, as an injec-6 tion molded thermoplastic part. The adaptor 284 includes '1 a genera l.ly planar main body plate 111 that has a central 8 slot 112 extending vertically from a lower edge 113 to its midsection. The slot has a Width the same as or slightly wider than the outside diameter of the connec-11 for 50. A channel 291 on the lower edge 113 of the plate 12 111 is adapted to receive the lower edge of the bag 13 assembly mounting collar 61.
14 The adaptor 284 is installed by passing it over the outlet nipple portion 54 inward (upstream) of the 16 flange 51 and sliding it downwardly so that an end or 17 bight 114 of the slot 112 rests against the outside 18 diameter of the outlet nipple. The edge of the slot 112 19 at and adjacent this bight 114 grip the outlet nipple 54 at the base of the flange 51 to resist bag separation 21 forces. The bag assembly 62 is coupled to the connector 22 50 by the adaptor 284 in essentially the same manner as 23 before described with reference to the adaptor 84.
24 The various disclosed adaptors 84, 184 and 284 can be installed by the user of a vacuum cleaner with 26 simple manipulative steps and without the use of separate 2~ tools or fasteners. The disclosed adaptors can remain 28 attached to the connector 50 indefinitely and bags can 29 be periodically removed from the adaptor and connector when filled to capacity and replaced with a new bag.
31 Other styles of bag adaptors utilizing the principles of 32 the invention are envisioned. The adaptor can be ar-33 ranged to be removable with the bag or can be arranged 34 to be installed after the bag is positioned on~the con-SUBSTITUTE SHEET
~_v~P~~,~
1 nector. Additionally, the adaptor can be constructed to 2 work with other bag mounting collars such as a round 3 collar. Further, the adaptor can be structured to grip 4 connector surfaces other than those already described such as the vertical cylindrical wall, adjacent the zone 6 where ii. intercepts with the horizontal cylindrical wall, 7 or the interior of the outlet nipple.
8 While the invention has been shown and de-9 scribed with respect to particular embodiments thereof, this is. for the purpose of illustration rather than 11 limitation, and other variations and modifications of 12 the specific embodiments herein shown and described will 13 be apparent to those skilled in the art all within the 14 intended spirit and scope of the invention. According-ly, the patent is not to be limited in scope and effect 16 to the specific embodiments herein shown and described 17 nor in any other way that is inconsistent with the extent 18 to which the progress in the art has been advanced by the 19 invention.
8u8STITUTE s H E ~r
Claims (24)
1. In an upright vacuum cleaner having an outer permanent filter bag and an inner disposable filter bag assembly, a rigid connector in the permanent bag having an inlet for receiving dirty air from the suction fan and an outlet for delivering dirty air to the disposable bag, the connector having an el-shaped circular tube structure including an end portion forming the outlet, the end portion having an end face, a pair of diametrally opposed projections extending radially outwardly from the tube end portion at a zone axially inward from its end, a flange extending radially outward from the periphery of the tube element at a zone axially inward of the zone of the projections, the disposable bag assembly including a relatively rigid mounting collar and a closed bag having walls of foldable porous sheet material surrounding an interior, a mouth opening in a wall of the bag, the mounting collar being permanently attached around the mouth of the bag, the collar including surfaces facing towards bag interior, an adaptor formed separately of the connector and the bag assembly for coupling the bag assembly to the connector, the adaptor having gripping means for engaging surface areas of the bag assembly and connector, the adaptor including gripping means disposed on a side of the collar away from the flange, the bag mouth being coupled to the outlet, the connector being arranged to retain the bag mouth in coupled relation to the outlet by resisting air pressure forces tending to separate the bag assembly from the outlet, the adaptor sustaining air pressure forces at surfaces of the connector and the bag assembly.
2. An adaptor for retaining a disposable bag on a dirty air connector of a vacuum cleaner, the connector having the general form of a tubular el with an inlet and a circular outlet nipple portion, the nipple portion having a pair of opposed projections formed on diametrally opposite sides and a flange on its periphery extending radially outward of the projections at a zone axially inward of the projections, the bag being formed of porous sheet material and being fully closed except for a mouth, a mounting collar permanently attached to the bag sheet material adjacent its mouth, the collar having opposite faces, one collar face facing towards the interior of the bag and the other face facing away from the interior of the bag, the adaptor having first gripping means originally engageable with the connector through manipulation by the user of such first gripping means, said first gripping means once engaged with said connector being self-sustaining without requiring supplemental fastening means, the adaptor having second gripping means originally engageable with the bag assembly through manipulation by the user of such second gripping means , said second gripping means being arranged to retain the bag assembly with its mouth in coupled relation to the connector outlet by sustaining air pressure forces on the bag assembly through a surface of the mounting collar facing towards the interior of the bag assembly.
3. A vacuum cleaner providing a connector through which dirt-laden air is discharged, said connector providing a generally cylindrical wall portion having an end, a disposable dust bag formed of air permeable material defining a dust collection chamber, an inlet in said dust bag and an adaptor means for connecting said connector to said dust bag, said connector including engaging structure for interconnecting said connector with said adaptor means to form an assembly, said inlet having an opening therein proportioned to fit over a portion of said assembly, said adaptor means including bag engagement stricture for coupling said adaptor means to said bag such that said connector is placed in fluid communication with said dust collection chamber through said inlet, and an elastomeric seal around said inlet providing a generally circular opening, said seal engaging a sealing surface defined on said assembly, said seal being in substantially airtight sealing engagement with said sealing surface of said assembly whereby said seal forms a substantially airtight seal between said dust bag and said connector when said adaptor means is coupled to said dust bag.
4. The vacuum cleaner of claim 3 wherein said connector engaging structure comprises at least one peripheral, outwardly extending projection adjacent but axially spaced from said end.
5. The vacuum cleaner of claim 3 wherein said connector engaging structure comprises peripherally spaced outwardly extending projections adjacent but axially spaced from said end.
6. The vacuum cleaner of claim 5 wherein said adaptor means is rotatable relative to said connector position in which portions of said adaptor means engage the sides of said projections remote from said end and said elastomeric seal extends over at least a portion of said projections.
7. The vacuum cleaner of claim 3 wherein said engaging structure on said connector comprises a radially extending flange means adjacent but axially spaced from said end.
8. The vacuum cleaner of claim 7 wherein said flange means comprises a continuous flange.
9. The vacuum cleaner of claim 5 wherein said adaptor means includes a projection engaging portion, said projection engaging portion operative to engage the sides of said projections remote from said end and said elastomeric seal extends over a sealing portion of said adaptor means.
10. The vacuum cleaner of Claim 9 wherein said sealing portion of said adaptor means comprises a tubular member that defines a sealing surface engaged by said elastomeric seal.
11. The vacuum cleaner of Claim 5 wherein said adaptor means includes slots dimensioned to loosely receive said projections of said connector such that when coupling said connector to said adaptor, said projections pass through said slots whereupon said connector is rotated relative to said adaptor to engage sides of said projections remote from said end.
12. The vacuum cleaner of Claim 11 wherein said sealing surface is defined near said end of said connector.
13. The vacuum cleaner of Claim 7 wherein said adaptor means includes an opening sized to receive a portion of. said connector but smaller in dimension than a dimension of said flange means such that a surface of said flange means remote from said connector end abutably engages a surface on said adaptor means whereby said connector is held in its operative position with respect to said inlet.
14. The vacuum cleaner of Claim 13 wherein said opening comprises a longitudinal slot.
15. The vacuum cleaner of Claim 9 wherein said projection engaging portion comprises a tubular member defining a projection gripping, inwardly directed flange, said gripping flange having an inner diameter dimensioned to be less than a diametral spacing between a periphery of said projections such that portions of said gripping flange engage the sides of said projections, remote from said end when said connector is inserted into said tubular member.
16. The vacuum cleaner of Claim 9 wherein said projection engaging portion and said sealing portion of said adaptor means are both defined by a tubular member forming part of said adaptor means.
17. A vacuum cleaner providing a connector through which dirt-laden air is discharged, said connector providing a generally cylindrical wall portion having an end and peripherally spaced outwardly extending projections adjacent said end, a flange means extending radially from said cylindrical wall portion, said flange means spaced axially from said end such that said projections are located intermediate said flange means and said end, said cylindrical wall portion defining a connector sealing surface, a disposable dust bag formed of permeable material defining a dust collection chamber, an inlet in said dust bag and a rigid collar means communicating with said inlet and having an opening therein proportioned to fit over said connector and said projections when in a mounting and removal position, said collar means being rotatable relative to said connector from said mounting and removal position to an installed position in which projection engaging portions of said collar means engage the sides of said projections remote from said end and a flange engaging portion of said collar means engages said flange means, and an elastomeric seal around said inlet providing a generally circular opening, said elastomeric seal engaging said sealing surface of said connector and extending over at least a portion of said projections, said seal being in substantially airtight sealing engagement with the sealing surface of said connector, whereby said seal forms a substantially airtight seal between said dust bag and said connector when said collar means is in said installed position, said seal resisting rotation of said collar means relative to said connector from said installed positions toward said mounting and removal positions.
18. The vacuum cleaner of claim 17 wherein said collar means forms part of said dust bag.
19. The vacuum cleaner of claim 17 wherein said collar means comprises an adaptor member removably engageable with said dust bag.
20. The vacuum cleaner of claim 17 wherein said flange mean, is spaced axially inward from said projections at least a distance corresponding to a thickness of said projection engaging portions of said collar means.
21. The vacuum cleaner of claim 20 wherein said flange means is circular.
22. A disposable vacuum cleaner dust bag comprising a porous sheet defining an elongated dust collection chamber adapted to be used in a vertical orientation with a larger elongated upright non-disposable cloth bag, an inlet adjacent an upper end of said chamber and remote from a lower end of said chamber, a substantially rigid collar means connected to said sheet around said inlet, said collar means providing a generally circular opening having at least one outwardly extending portion, a sealing element at said inlet, said collar means being adapted to be on a connector carried within the cloth bag, the connector having a cylindrical outlet portion including an end through which dirt ladened air is delivered by a vacuum cleaner and peripherally spaced outwardly extending projections and a flange means spaced axially inwardly from said projections, said collar means being adapted to be installed oil and released from said connector when in a first position where said outwardly extending portion is aligned with one of said projections and being rotatable relative to said connector to an installed position in which said collar extends behind said projection and said outwardly extending portion is misaligned with said one projection to secure said collar on said connector, said collar means further defining a flange engaging portion which abuttably engages said flange means when said collar means is in said installed position, said sealing element being adapted to seal on the connector to prevent leakage of dirt-ladened air over the connector, the angular orientation of the outwardly extending portion of the collar opening being arranged such that when said collar is in said installed position, the elongated disposable bag chamber is adapted to be received within the elongated cloth bag in longitudinal vertical alignment therewith whereby unintended turning of the collar towards the first position on the connector and consequent release of the collar from the connector is resisted through confinement of the disposable bag chamber in its vertical orientation by the cloth bag.
23. The disposable vacuum cleaner dust bag of claim 22 wherein said collar means includes projection engaging portions having a thickness selected to correspond to spacing between said flange means and said projections.
24. The disposable vacuum cleaner dust bag of claim 22 wherein said collar means includes two outwardly extending portions.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37826489A | 1989-07-11 | 1989-07-11 | |
| US07/378,264 | 1989-07-11 | ||
| PCT/US1990/003826 WO1991000707A1 (en) | 1989-07-11 | 1990-07-06 | Disposable dust bag for vacuum cleaners and the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2035890A1 CA2035890A1 (en) | 1991-01-12 |
| CA2035890C true CA2035890C (en) | 1999-09-14 |
Family
ID=23492405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002035890A Expired - Fee Related CA2035890C (en) | 1989-07-11 | 1990-07-06 | Disposable dust bag for vacuum cleaners and the like |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0433439B1 (en) |
| AU (1) | AU633948B2 (en) |
| CA (1) | CA2035890C (en) |
| DE (1) | DE69029843T2 (en) |
| DK (1) | DK0433439T3 (en) |
| NO (1) | NO179123C (en) |
| SG (1) | SG65574A1 (en) |
| WO (1) | WO1991000707A1 (en) |
| ZA (1) | ZA905400B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0731309B1 (en) * | 1995-03-08 | 2001-06-06 | Whirlpool Europe B.V. | Insertion-connected component for refrigerators, freezers and the like |
| DE102008041227A1 (en) * | 2008-08-13 | 2010-02-18 | BSH Bosch und Siemens Hausgeräte GmbH | Dust bags |
| EP2713843A4 (en) * | 2011-05-31 | 2015-10-28 | Zenith Technologies L L C | Vacuum bag attachment assembly |
| DE202015000249U1 (en) * | 2015-01-19 | 2016-01-20 | Michaela Walther | filter element |
| HUE069931T2 (en) * | 2016-11-23 | 2025-04-28 | Electrolux Ab | Devices of a vacuum cleaner dust container |
| CN107855514A (en) * | 2017-12-11 | 2018-03-30 | 机械工业第六设计研究院有限公司 | Process layout's structure in environment-friendly type casting pouring area |
| DE102021121083A1 (en) * | 2021-08-13 | 2023-02-16 | Miele & Cie. Kg | anthers |
| WO2025195789A1 (en) * | 2024-03-20 | 2025-09-25 | Miele & Cie. Kg | Retainer plate with latching recess |
| WO2025195787A1 (en) * | 2024-03-20 | 2025-09-25 | Miele & Cie. Kg | Holding plate with latching elements |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL120373C (en) * | 1962-05-05 | |||
| US3242654A (en) * | 1963-03-26 | 1966-03-29 | Kingston Products Corp | Disposable bag assembly for vacuum cleaner |
| US3417550A (en) * | 1965-10-04 | 1968-12-24 | Studley Paper Company Inc | Disposable vacuum cleaner filter bag |
| US3675399A (en) * | 1969-04-21 | 1972-07-11 | Whirlpool Co | Vacuum cleaner |
| SE421857B (en) * | 1978-09-25 | 1982-02-08 | Electrolux Ab | DEVICE AT A DUST SUCCESS STAGE |
| US4262384A (en) * | 1980-01-25 | 1981-04-21 | The Scott & Fetzer Company | Vacuum cleaner bag assembly |
| US4364757A (en) * | 1981-08-24 | 1982-12-21 | The Hoover Company | Vacuum cleaner filter bag collar arrangement |
| US4514199A (en) * | 1984-05-25 | 1985-04-30 | The Scott & Fetzer Company | Vacuum cleaner dirt box |
| US4591369A (en) * | 1984-10-24 | 1986-05-27 | Whirlpool Corporation | Dust bag mount arrangement for canister vacuum cleaner |
| US4738697A (en) * | 1986-12-09 | 1988-04-19 | Whirlpool Corporation | Vacuum cleaner bag mount and method for mounting a dust bag thereon |
| US4877432A (en) * | 1988-06-17 | 1989-10-31 | The Scott Fetzer Company | Disposable dust bag for vacuum cleaners and the like |
-
1990
- 1990-07-06 DK DK90911721.0T patent/DK0433439T3/en active
- 1990-07-06 SG SG1996005806A patent/SG65574A1/en unknown
- 1990-07-06 AU AU60580/90A patent/AU633948B2/en not_active Ceased
- 1990-07-06 DE DE69029843T patent/DE69029843T2/en not_active Expired - Lifetime
- 1990-07-06 EP EP90911721A patent/EP0433439B1/en not_active Expired - Lifetime
- 1990-07-06 CA CA002035890A patent/CA2035890C/en not_active Expired - Fee Related
- 1990-07-06 WO PCT/US1990/003826 patent/WO1991000707A1/en active IP Right Grant
- 1990-07-10 ZA ZA905400A patent/ZA905400B/en unknown
-
1991
- 1991-03-05 NO NO910854A patent/NO179123C/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA2035890A1 (en) | 1991-01-12 |
| AU6058090A (en) | 1991-02-06 |
| NO910854D0 (en) | 1991-03-05 |
| AU633948B2 (en) | 1993-02-11 |
| NO179123B (en) | 1996-05-06 |
| ZA905400B (en) | 1992-03-25 |
| DE69029843D1 (en) | 1997-03-13 |
| DK0433439T3 (en) | 1997-07-14 |
| NO910854L (en) | 1991-05-10 |
| EP0433439A4 (en) | 1991-11-21 |
| WO1991000707A1 (en) | 1991-01-24 |
| SG65574A1 (en) | 1999-06-22 |
| EP0433439A1 (en) | 1991-06-26 |
| EP0433439B1 (en) | 1997-01-29 |
| DE69029843T2 (en) | 1997-06-19 |
| NO179123C (en) | 1996-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |