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WO1998017164A1 - Automatically closed dust bag for electric brooms and the like - Google Patents

Automatically closed dust bag for electric brooms and the like Download PDF

Info

Publication number
WO1998017164A1
WO1998017164A1 PCT/IT1996/000237 IT9600237W WO9817164A1 WO 1998017164 A1 WO1998017164 A1 WO 1998017164A1 IT 9600237 W IT9600237 W IT 9600237W WO 9817164 A1 WO9817164 A1 WO 9817164A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust
bag
flange
hole
tongue
Prior art date
Application number
PCT/IT1996/000237
Other languages
French (fr)
Inventor
Gianfranco Sozzi
Original Assignee
Gisowatt S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gisowatt S.P.A. filed Critical Gisowatt S.P.A.
Publication of WO1998017164A1 publication Critical patent/WO1998017164A1/en

Links

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
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • A47L9/1445—Connecting plates, e.g. collars, end closures with closure means
    • A47L9/1454—Self-sealing closures, e.g. valves
    • 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

Definitions

  • the invention concerns the devices used in vacuum cleaners and similar appliances for changing dust collection bags.
  • Subject of the invention is a replaceable dust-collecting bag for vacuum cleaning appliances.
  • Said bag is closed at one end and has a rigid flange glued onto its base, covering substantially the whole of the bag's cross section, having in it a large central oblong hole whose position corresponds with that of a large hole in the bottom of the bag, said flange comprising an elastic lamina in which a hole is made of a diameter smaller than the external diameter of the end of the dust-discharging tube, substantially aligned with the other holes.
  • a substantially rectangular elastic tongue fixed close to the edge of the hole in the elastic lamina and of a width greater than the diameter of said hole, extends beyond the opposite side of said hole in close contact with said elastic lamina.
  • Thickness of the flange is substantially constant and, projecting centrally from its sides, are two small rounded teeth intended to be elastically pressed inside corresponding holes made in the bottom of opposingly situated U-shaped channels, cut in a pair of arms, fixed to the inner wall of a door in the appliance, that stand out substantially at right angles from said wall.
  • Distance between said channels corresponds to the width of the flange on the bag, a width the same as the flange's thickness and, when the door of the appliance is closed, their position substantially corresponds to a geometrical plane passing through the end of the dust-discharging tube, symmetrical to both sides of said end.
  • the tongue When the full bag is taken out of the appliance for changing, the tongue, no longer pressed by the discharge tube, spontaneously resumes its closed positiion preventing dust from coming out.
  • Frontward the flange is curved to fit the inner curved wall of the door carrying the bag, while rearward it has a projection for easy finger grip.
  • the flange is preferably formed by glued association of two pieces of stiff pressed cardboard, there being interposed between them the lamina of latex rubber and the tongue of elastic plastic material.
  • the flange at one end of the bag acts as a real automatic valve that opens when the empty bag is put in and closes when the full bag is removed, preventing any dust from leaking out into the environment.
  • said flange Being made from a series of thin superimposed layers, said flange is substantially flat and of minimum thickness so that it can be bent against the side of the empty bag to be of little or no bulk in transport and storage. Opening the bag from its practically flat storage position to its operative form with the flange substantially crosswise, is extremely simple.
  • the seal between bag and discharge tube is rendered automatic due to elasticity of the edge of the latex lamina, pressed on to surround and cover the end of said tube.
  • the materials used, substantially paper and plastic, are of the cheapest kind.
  • FIG.1 Perspective of the electric appliance, with half-open door, to which the dust bag adheres.
  • Fig.2 Exploded perspective view of the dust bag.
  • Fig.3 Perspective of the dust bag being put in, or taken out, through the door of the electric appliance.
  • FIG.4 Internal perspective of the bag mounted on the door when closed.
  • the dust bag 10 exhibits a body 1 1 of paper with one end 12 closed and a bottom 13, in which is a large central hole 14, associated by glueing to a stiff flange 30.
  • Said flange is composed of two thin layers 31 , 40 of cardboard between which is a latex lamina 50 and also a substantially rectangular tongue 55 of elastic plastic material.
  • the layers 31 and 40 and the latex lamina 50 are associated by glueing and press on the tongue 55 interposed between the layer 31 , matching with the bottom 13 of the bag, and the latex lamina.
  • both layers 31 and 40 are large oblong holes 32 while in the lamina 50 there is a round hole 51 placed substantially central to said oblong hole 32.
  • the rear end 56 of the tongue 55 is glued between the layer 31 and lamina 50 on one side of the round hole 51 in said lamina, said tongue extending beyond the other end of said hole and closing it completely, the width of said lamina being greater than the diameter of the hole.
  • the diameter of the hole 51 is smaller than the external diameter of the end 73 of the discharge tube in the electric appliance 70.
  • the flange 30 is substantially rectangular, its front end being shaped in an arc of a circle 33 to fit the curve of the inner wall 61 of the door 60 in the electric appliance 70.
  • each side of said flange 30 is a rounded tooth 34 and, rearward, a projection 35 to serve as a finger grip.
  • arms 62 Low down on the wall 61 of the door 60 to the electric appliance 70 are arms 62 in which are U-shaped channels 63 whose width corresponds to that of the flange 30, one channel opposite the other separated by a distance the same as the width of said flange.
  • Two holes 64 are cut in the base and almost at the end of said channels 63, the size of said holes being that of the lateral teeth 34 on the flange.
  • Said end 73 of the tube on penetrating inside said hole 51 , causes the tongue 55 to curve 55' so that the tongue moves away to allow free passage of dust rising up through said tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

Dust-collecting bag (10) for an electric broom (70) whose base exhibits a flange (30) with a large central hole (32), a rubber lamina (50) in which is a hole (51) closed by an elastic tongue (55) so that on putting the bag (10) into the appliance (70), the end of the dust-discharging tube (73), on penetrating by force into the hole (51) in the rubber lamina (50), causes the tongue (55) to curve away freeing communication with the discharge tube (73) while, when the bag (10), full of dust, is removed, the tongue (55) spontaneously returns to the closing position preventing any escape of dust.

Description

Automatically closed dust bag for electric brooms and the like The invention concerns the devices used in vacuum cleaners and similar appliances for changing dust collection bags.
Collecting dust especially indoors is known to create problems as it involves both drawing in the dust by a suitable motor-driven fan and storing it in a bag, placed inside the appliance, to be removed and changed as soon as it is full
Changing a bag full of dust has its drawbacks as dust easily flies out and spreads through the environment during the operation. Sophisticated systems exist including a valve for automatically opening the bag when new and closing it when full but such systems are costly and complicated in use.
The cost exceeds any advantages obtained as vacuum cleaning appliances are widely adopted in homely as well as luxurious surroundings and therefore the cost both in time and money can, if excessive, raise obstacles to a more extensive use of bags. The above invention removes these problems, offering original technical solutions of both a practical and inexpensive nature to the great advantage of users everywhere.
Subject of the invention is a replaceable dust-collecting bag for vacuum cleaning appliances. Said bag is closed at one end and has a rigid flange glued onto its base, covering substantially the whole of the bag's cross section, having in it a large central oblong hole whose position corresponds with that of a large hole in the bottom of the bag, said flange comprising an elastic lamina in which a hole is made of a diameter smaller than the external diameter of the end of the dust-discharging tube, substantially aligned with the other holes.
A substantially rectangular elastic tongue, fixed close to the edge of the hole in the elastic lamina and of a width greater than the diameter of said hole, extends beyond the opposite side of said hole in close contact with said elastic lamina.
Thickness of the flange is substantially constant and, projecting centrally from its sides, are two small rounded teeth intended to be elastically pressed inside corresponding holes made in the bottom of opposingly situated U-shaped channels, cut in a pair of arms, fixed to the inner wall of a door in the appliance, that stand out substantially at right angles from said wall.
Distance between said channels corresponds to the width of the flange on the bag, a width the same as the flange's thickness and, when the door of the appliance is closed, their position substantially corresponds to a geometrical plane passing through the end of the dust-discharging tube, symmetrical to both sides of said end.
Therefore, when the flange of an empty bag is fitted in between the two opposing channels, it is made stable by spontaneous penetration of its lateral teeth in the holes in said channels.
On closing the door of the appliance the end of the dust-discharge tube automatically penetrates inside the hole in the elastic lamina, whose edges adhere to said end, and at the same time causes the end of the elastic tongue to curve, closing the hole in the elastic lamina, inside the bag leaving free communication between bag and discharge tube.
When the full bag is taken out of the appliance for changing, the tongue, no longer pressed by the discharge tube, spontaneously resumes its closed positiion preventing dust from coming out. Frontward the flange is curved to fit the inner curved wall of the door carrying the bag, while rearward it has a projection for easy finger grip. The flange is preferably formed by glued association of two pieces of stiff pressed cardboard, there being interposed between them the lamina of latex rubber and the tongue of elastic plastic material. The invention offers evident advantages:
The flange at one end of the bag, to match with the dust discharge tube when inside the appliance, acts as a real automatic valve that opens when the empty bag is put in and closes when the full bag is removed, preventing any dust from leaking out into the environment.
Being made from a series of thin superimposed layers, said flange is substantially flat and of minimum thickness so that it can be bent against the side of the empty bag to be of little or no bulk in transport and storage. Opening the bag from its practically flat storage position to its operative form with the flange substantially crosswise, is extremely simple.
The seal between bag and discharge tube is rendered automatic due to elasticity of the edge of the latex lamina, pressed on to surround and cover the end of said tube. The materials used, substantially paper and plastic, are of the cheapest kind.
It will be clear from the foregoing that the described bag is quickly and easily replaced at little cost and can be universally used. Characteristics and purposes of the invention will be made still clearer from the following example of its execution illustrated by diagrammatically drawn figures.
Fig.1 Perspective of the electric appliance, with half-open door, to which the dust bag adheres. Fig.2 Exploded perspective view of the dust bag. Fig.3 Perspective of the dust bag being put in, or taken out, through the door of the electric appliance.
Fig.4 Internal perspective of the bag mounted on the door when closed. The dust bag 10 exhibits a body 1 1 of paper with one end 12 closed and a bottom 13, in which is a large central hole 14, associated by glueing to a stiff flange 30.
Said flange is composed of two thin layers 31 , 40 of cardboard between which is a latex lamina 50 and also a substantially rectangular tongue 55 of elastic plastic material.
The layers 31 and 40 and the latex lamina 50 are associated by glueing and press on the tongue 55 interposed between the layer 31 , matching with the bottom 13 of the bag, and the latex lamina. In both layers 31 and 40 are large oblong holes 32 while in the lamina 50 there is a round hole 51 placed substantially central to said oblong hole 32.
The rear end 56 of the tongue 55 is glued between the layer 31 and lamina 50 on one side of the round hole 51 in said lamina, said tongue extending beyond the other end of said hole and closing it completely, the width of said lamina being greater than the diameter of the hole. The diameter of the hole 51 is smaller than the external diameter of the end 73 of the discharge tube in the electric appliance 70. The flange 30 is substantially rectangular, its front end being shaped in an arc of a circle 33 to fit the curve of the inner wall 61 of the door 60 in the electric appliance 70.
Substantially central in each side of said flange 30 is a rounded tooth 34 and, rearward, a projection 35 to serve as a finger grip. Low down on the wall 61 of the door 60 to the electric appliance 70 are arms 62 in which are U-shaped channels 63 whose width corresponds to that of the flange 30, one channel opposite the other separated by a distance the same as the width of said flange.
Two holes 64 are cut in the base and almost at the end of said channels 63, the size of said holes being that of the lateral teeth 34 on the flange. To fit the dust bag into the electric broom 70, the door 60, attached to the upper end 71 of the window 72, is opened and the flange 30 of the bag put in between the two arms 62 until fixed by the teeth 34 inside the holes 64 that hold the bag firmly onto the door. On closing the door of the electric broom 70, the end 73 of the discharge tube penetrates inside the hole 51 in the elastic lamina 50 and is held in place by the edges of said hole.
Said end 73 of the tube, on penetrating inside said hole 51 , causes the tongue 55 to curve 55' so that the tongue moves away to allow free passage of dust rising up through said tube.
When the bag is full of dust it is removed from the door by extracting the flange 30 and by this movement the tongue 55 automatically closes the hole in the latex lamina 50, as would an automatic valve.

Claims

1. Replaceable dust-collecting bag (10) for vacuum cleaning appliances especially electric brooms (70), characterized in that it exhibits one closed end (12) and, at its base, a rigid flange (30) glued to said base, said flange extending substantially over the whole transversal section of the bag, having in it a large oblong central hole (32) whose position corresponds to that of a large hole (14) in the base of the bag, and exhibits an elastic lamina (50) in which there is a hole (51) of a diameter smaller than the external diameter of the end of the dust-dischrging tube (73), so that by fitting the bag (10) into the space (72) made for it in the appliance (70), the end of said tube (73) passes inside said hole (51) in the elastic lamina (50) that ensures a seal for the dust drawn in.
2. Replaceable dust-collecting bag for vacuum cleaning appliances especially electric brooms as in claim 1 , characterized in that close to the edge of the hole (51) in the elastic lamina (50) an elastic substantially rectangular tongue (55) is fixed, its width being greater than the diameter of said hole (51), said tongue extending beyond the opposite end of said hole in close contact with said elastic lamina so that, on penetrating inside the hole (51) in the elastic lamina, the end of the dust-discharging tube (73) causes curvature (55') of the end of the tongue (55) towards the inside of the bag (10) freeing communication between the bag and the discharge tube (73) while when the bag (10), full of dust, is removed from the appliance (70) for exchange with a clean one, the tongue (55), no longer pressed by the dust-discharge tube (73), spontaneously returns to its closing position thus preventing the escape of dust outside.
3. Replaceable dust-collecting bag for vacuum cleaning appliances especially electric brooms as in claim 1 , characterized in that thickness of the flange (30) is substantially constant and at an approximately central position on each of its sides is a small rounded tooth (34) that when pressed will elastically penetrate inside corresponding holes cut in the bottom of opposingly situated U-shaped channels (63) made in orthogonally projecting arms (62) supported by the internal wall (61) of a door (60) on the appliance (70), said channels (63) exhibiting a reciprocal distance corresponding to the width of the flange (30) on the bag (10), a width corresponding to the thickness of the flange and, when the door (60) is closed on the appliance (70), a position substantially corresponding to a geometrical plane passing through the end of the dust-collecting tube (73) and symmetrical to both sides of said end, so that on inserting the flange (30) of an empty bag (10) between the two opposing channels (63), its position is stabilized by spontaneous entry of the teeth (34) on said flange (30) in said holes (64) in the channels and on closing said door (60) on the appliance (70), the end of the dust-discharging tube (73) automatically penetrates inside the hole (51) in the elastic lamina (50) whose edges then adhere to said end.
4. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claim 1 , characterized in that, at its front, the flange (30) exhibits a curved shape (33) to fit the internal curved wall (61) of the bag-carrying door (60).
5. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claim 1 , characterized in that, at the back, the flange (30) exhibits a projection (35) acting as a finger grip.
6. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claims 1 and 2, characterized in that the flange (30) is obtained by glued association of two rigid layers (31 , 40) interposed between which are the elastic lamina (50) and the elastic tongue (55).
7. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claim 6, characterized in that the rigid layers (31 , 40) forming the flange (30) consist of pressed cardboard.
8. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claim 1 , characterized in that the elastic lamina (50) in the flange (30) is made of latex or of some kind of rubber.
9. Replaceable dust-collecting bag for vacuum cleaning appliances, especially for electric brooms as in claim 2, characterized in that the elastic tongue (55) is made of plastic material.
PCT/IT1996/000237 1996-10-22 1996-12-02 Automatically closed dust bag for electric brooms and the like WO1998017164A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI962194 IT1285537B1 (en) 1996-10-22 1996-10-22 DUST COLLECTION BAG FOR ELECTRIC AND SIMILAR PURPOSES WITH AUTOMATIC CLOSURE
ITMI96A002194 1996-10-22

Publications (1)

Publication Number Publication Date
WO1998017164A1 true WO1998017164A1 (en) 1998-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1996/000237 WO1998017164A1 (en) 1996-10-22 1996-12-02 Automatically closed dust bag for electric brooms and the like

Country Status (2)

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IT (1) IT1285537B1 (en)
WO (1) WO1998017164A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800980A1 (en) * 1999-11-15 2001-05-18 Moulinex Sa SHUTTER VACUUM BAG, ASSOCIATED FIXING DEVICE, AND VACUUM USING SUCH A DEVICE
EP1326518A1 (en) * 2000-09-29 2003-07-16 Oreck Holdings, LLC Apparatus and methods for supporting and shielding flexible outer bags of vacuum cleaners
FR2870705A1 (en) * 2004-05-26 2005-12-02 Seb Sa SYSTEM FOR OPENING AND CLOSING A DUST BAG OF VACUUM CLEANER
EP1787561A1 (en) * 2005-11-22 2007-05-23 Eurofilters Holding N.V Vacuum cleaner dust bag with closure means
WO2007059938A1 (en) * 2005-11-22 2007-05-31 Eurofilters Holding N.V. Vacuum cleaner filter bag comprising a sealing device
WO2009027289A1 (en) * 2007-08-28 2009-03-05 De' Longhi Spa Device for the collection of dirt in a suction apparatus
US7799107B2 (en) 2006-03-15 2010-09-21 Techtronic Floor Care Technology Limited Self-sealing bag arrangement for a floor cleaning device
EP2343001A1 (en) * 2005-11-22 2011-07-13 Eurofilters Holding N.V. Vacuum cleaner filter bag
US8382871B2 (en) 2005-11-22 2013-02-26 Eurofilters Holding N.V. Vacuum cleaner filter bag and use of said bag
US8479356B2 (en) 2005-11-22 2013-07-09 Eurofilters Holding N.V. Vacuum cleaner filter bag comprising a sealing device
JP2015181934A (en) * 2014-03-25 2015-10-22 フォルヴェルク・ウント・ツェーオー、インターホールディング・ゲーエムベーハーＶｏｒｗｅｒｋ ＆ Ｃｏｍｐａｇｎｉｅ Ｉｎｔｅｒｈｏｌｄｉｎｇ Ｇｅｓｅｌｌｓｈａｆｔ Ｍｉｔ Ｂｅｓｃｈｒａｎｋｔｅｒ Ｈａｆｔｕｎｇ Dust collection filter bag for vacuum cleaner and dust collection filter bag device in vacuum cleaner
GB2571056A (en) * 2017-11-15 2019-08-21 Clinivac Ltd Vacuum envelope support

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724179A (en) * 1966-12-26 1973-04-03 Electrolux Ab Self-sealing end closure for disposable dust bag
US3803815A (en) * 1972-03-10 1974-04-16 Cons Foods Corp Self-sealing disposable vacuum cleaner dust bag
US5039324A (en) * 1989-03-27 1991-08-13 Mastercraft Industries, Inc. Sealable collar vacuum cleaner bag
FR2721188A1 (en) * 1994-06-21 1995-12-22 Delphy Automatic closure device for dust bag of vacuum cleaner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724179A (en) * 1966-12-26 1973-04-03 Electrolux Ab Self-sealing end closure for disposable dust bag
US3803815A (en) * 1972-03-10 1974-04-16 Cons Foods Corp Self-sealing disposable vacuum cleaner dust bag
US5039324A (en) * 1989-03-27 1991-08-13 Mastercraft Industries, Inc. Sealable collar vacuum cleaner bag
FR2721188A1 (en) * 1994-06-21 1995-12-22 Delphy Automatic closure device for dust bag of vacuum cleaner

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800980A1 (en) * 1999-11-15 2001-05-18 Moulinex Sa SHUTTER VACUUM BAG, ASSOCIATED FIXING DEVICE, AND VACUUM USING SUCH A DEVICE
WO2001035808A1 (en) * 1999-11-15 2001-05-25 Moulinex S.A. Vacuum cleaner bag with automatic closure associated fixing device and vacuum cleaner using same
EP1326518A1 (en) * 2000-09-29 2003-07-16 Oreck Holdings, LLC Apparatus and methods for supporting and shielding flexible outer bags of vacuum cleaners
EP1326518A4 (en) * 2000-09-29 2007-05-23 Oreck Holdings Llc Apparatus and methods for supporting and shielding flexible outer bags of vacuum cleaners
FR2870705A1 (en) * 2004-05-26 2005-12-02 Seb Sa SYSTEM FOR OPENING AND CLOSING A DUST BAG OF VACUUM CLEANER
EP1602307A1 (en) * 2004-05-26 2005-12-07 Seb S.A. Closure and opening device for a vacuum cleaner dust bag
US8382871B2 (en) 2005-11-22 2013-02-26 Eurofilters Holding N.V. Vacuum cleaner filter bag and use of said bag
WO2007059938A1 (en) * 2005-11-22 2007-05-31 Eurofilters Holding N.V. Vacuum cleaner filter bag comprising a sealing device
EP2343001A1 (en) * 2005-11-22 2011-07-13 Eurofilters Holding N.V. Vacuum cleaner filter bag
US8157879B2 (en) 2005-11-22 2012-04-17 Eurofilters Holding N.V. Vacuum cleaner filter bag with deflection device
EP1787561A1 (en) * 2005-11-22 2007-05-23 Eurofilters Holding N.V Vacuum cleaner dust bag with closure means
US8479356B2 (en) 2005-11-22 2013-07-09 Eurofilters Holding N.V. Vacuum cleaner filter bag comprising a sealing device
US7799107B2 (en) 2006-03-15 2010-09-21 Techtronic Floor Care Technology Limited Self-sealing bag arrangement for a floor cleaning device
WO2009027289A1 (en) * 2007-08-28 2009-03-05 De' Longhi Spa Device for the collection of dirt in a suction apparatus
JP2015181934A (en) * 2014-03-25 2015-10-22 フォルヴェルク・ウント・ツェーオー、インターホールディング・ゲーエムベーハーＶｏｒｗｅｒｋ ＆ Ｃｏｍｐａｇｎｉｅ Ｉｎｔｅｒｈｏｌｄｉｎｇ Ｇｅｓｅｌｌｓｈａｆｔ Ｍｉｔ Ｂｅｓｃｈｒａｎｋｔｅｒ Ｈａｆｔｕｎｇ Dust collection filter bag for vacuum cleaner and dust collection filter bag device in vacuum cleaner
GB2571056A (en) * 2017-11-15 2019-08-21 Clinivac Ltd Vacuum envelope support

Also Published As

Publication number Publication date
ITMI962194A1 (en) 1998-04-22
IT1285537B1 (en) 1998-06-08

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