Seaming, Reinforcing Or Bag Structure Patents (Class 55/381)
  • Patent number: 10307030
    Abstract: The invention relates to a holding plate for a vacuum cleaner filter bag having a bag wall, the holding plate including a base plate made of a first plastic material with a passage opening, and a connecting element that is connected to the base plate by a material bond and is made of a second plastic material, for connecting the base plate to the bag wall by a material bond, in particular by means of ultrasonic welding, characterized in that the connecting element is arranged on the side of the base plate that is to be connected to the bag wall.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: June 4, 2019
    Assignee: Eurofilters Holding N.V.
    Inventors: Jan Schultink, Ralf Sauer
  • Patent number: 8974566
    Abstract: A vacuum cleaner filter bag is provided. The vacuum cleaner filter bag includes at least one side fold formed by two fold legs, and the vacuum cleaner filter bag is designed as a tubular bag, wherein, in a turned-in state, the at least one side fold has at least three edges, wherein two of the edges are formed by a respective weld seam, and wherein the side fold can be turned out with the edges formed by a weld seam.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: March 10, 2015
    Assignee: Eurofilters Holding N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Patent number: 8790432
    Abstract: A seam-sealed filter in which the seam is sealed with a seam tape comprised of an expanded fluoropolymer, such as ePTFE and copolymers thereof, having a crosswise matrix modulus of greater than 1,950 psi and an enthalpy ratio of less than 0.6 is disclosed. Such seam-sealed filters are capable of undergoing greater than 50,000 pulse-jet or reverse air cleaning cycles without substantial cracking or peeling of the sealed seam. Accordingly, the seam-sealed filters in the form of bags are particularly suitable for use in reducing particulate emissions in cement baghouses and the like.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 29, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Rebecca Lynn Roehmer, Steve Emmett Minor, Scott Zero
  • Patent number: 8702849
    Abstract: A dust screen for an inspection hatch disposed in the roof or a side wall of a dry bulk storage unit for use during pneumatic loading of aggregate material from a pneumatic trailer via air pressure ducted into the bulk storage unit. The dust screen includes an elastic cord in a hem surrounding an open end of the screen to secure the dust screen to the inspection hatch. An alternative embodiment may include a binding strap having a ratchet buckle to supplement the elastic cord. As the dust screen extends upward in the presence of said air pressure, the dust is allowed to settle into the storage unit. No separate container to contain the dust is required, and no separate structure is required to support the dust screen during operation. The dust screen is light weight, portable and reusable, and low in cost.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: April 22, 2014
    Assignee: Matson, Inc.
    Inventor: Mark Matson
  • Publication number: 20140020346
    Abstract: A containment system for reducing the release of harmful respirable particles through surface openings in equipment that carries sand includes a filter-receiving member configured to be coupled over an opening in a surface of the equipment and a filter member configured to be coupled to the filter-receiving member. The filter-receiving member can have a first side, a second side, and a passageway extending from the first side to the second side. The filter can have a porosity that permits air to flow through the filter member and restricts the flow of solid particulates.
    Type: Application
    Filed: March 13, 2013
    Publication date: January 23, 2014
    Applicant: The Government of the U.S.A. as represented by the Secretary of the Dept of Health & Human Services
    Inventor: The Government of the U.S.A. as represented by the Secretary of the Department of Health and Human Services
  • Publication number: 20130283742
    Abstract: A seam-sealed filter in which the seam is sealed with a seam tape comprised of an expanded fluoropolymer, such as ePTFE and copolymers thereof, having a crosswise matrix modulus of greater than 1,950 psi and an enthalpy ratio of less than 0.6 is disclosed. Such seam-sealed filters are capable of undergoing greater than 50,000?pulse-jet or reverse air cleaning cycles without substantial cracking or peeling of the sealed seam. Accordingly, the seam-sealed filters in the form of bags are particularly suitable for use in reducing particulate emissions in cement baghouses and the like.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Inventors: Rebecca Lynn Roehmer, Steve Emmett Minor, Scott Zero
  • Publication number: 20130198994
    Abstract: The invention relates to a vacuum-cleaning apparatus with a vacuum-cleaner unit and a filter bag, in which the filter bag is designed as a flat bag, as a nonwoven filter bag and as a disposable filter bag, and the vacuum-cleaner unit has a filter-bag-accommodating chamber with rigid walls, wherein the filter-bag-accommodating chamber has an opening which can be closed by a flap and has a predetermined opening surface area, through which the filter bag can be inserted into the filter-bag-accommodating chamber. The invention is distinguished in that the ratio between the surface area of a rectangle corresponding to the opening surface area and the surface area of the filter bag is greater than 0.70, preferably greater than 0.85, and highly preferably greater than 1.0.
    Type: Application
    Filed: September 5, 2011
    Publication date: August 8, 2013
    Applicant: Eurofilters Holding N.V.
    Inventors: Jan Schultink, Ralf Sauer
  • Patent number: 8449639
    Abstract: The invention relates to a vacuum cleaner filter bag, including an inlet opening (3), a filter bag material which has an inner layer of nonwoven material (10) at least in the region of the inlet opening, and a holding plate (2) which is arranged on the outside of the filter bag in the region of the inlet opening, can be attached to a vacuum cleaner holding means for securing the vacuum cleaner filter bag and on which a closure device (4) for closing the inlet opening is provided, wherein the nonwoven material, in the region of the inlet opening, has a surface (20) which is provided in such a manner that the formation of a filter cake on said surface is avoided.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: May 28, 2013
    Assignee: Eurofilters Holding N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Publication number: 20130036717
    Abstract: The invention comprises a vacuum cleaner filter bag having at least one side fold formed by two fold legs, wherein the vacuum cleaner filter bag is designed as a tubular bag, wherein, in a turned-in state, the at least one side fold has at least three edges, wherein two of the edges are formed by a respective weld seam, and wherein the side fold can be turned out with the edges formed by a weld seam.
    Type: Application
    Filed: February 16, 2011
    Publication date: February 14, 2013
    Applicant: Eurofilters Holding N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Patent number: 8372181
    Abstract: A filter bag assembly and an associated method. The assembly has a filter bag that includes at least two sidewalls of filter material spaced from each other at an open end and connected to provide a closed end of the filter bag assembly. At least one of the sidewalls includes at least one folded pleat. In one specific example, the folded pleat extends perpendicular relative to a direction extending from the open end to the closed end.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: February 12, 2013
    Assignee: General Electric Company
    Inventor: John Carl Davies
  • Publication number: 20120210684
    Abstract: The invention relates to a vacuum cleaner filter bag (101, 201) comprising a bag wall (104), wherein the bag wall (104) comprises at least one biodegradable nonwoven layer.
    Type: Application
    Filed: September 21, 2010
    Publication date: August 23, 2012
    Inventors: Jan Schultink, Ralf Sauer
  • Patent number: 8246844
    Abstract: A method of folding a filter bag 10 made from a nonwoven fabric or stiff media to facilitate installation within a filter retainer basket and a folded filter bag 10 arrangement.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: August 21, 2012
    Assignee: Eaton Corporation
    Inventor: Mark Anthony Quintel
  • Patent number: 8182564
    Abstract: A multi-layer bag assembly is used with a housing for collecting particles from air flowing through the multi-layer bag assembly. Multi-layer bag assembly includes at least two bags arranged one inside the other. Each of the bags includes an air permeable filtering material for collecting particles carried by air flowing through the material. The air permeable filtering material being may be the same or different for the at least two bags. The multi-layer bag assembly includes structure for holding the at least two bags in a wide open position. The structure may be a cooperating bag structure incorporated in the at least two bags for cooperating with the housing for selectively holding the respective bags in their respective open conditions. The structure may also be a removable collar attached to at the open portion of the at least two bags, where the removable collar is part of an integral collar of the multi-layer bag assembly.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: May 22, 2012
    Assignee: Zhao Hui Filters (US), Inc.
    Inventor: Mark Howard
  • Patent number: 8114180
    Abstract: This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a scrimless filter felt consisting essentially of a needle-punched batt of an intimate blend of fibers consisting of 50 to 79 percent by weight meta-aramid staple fiber, and 21 to 50 percent by weight para-aramid staple fiber; said needle-punched batt having a basis weight of from 10 to 17 ounces per square yard (340 to 580 grams per square meter).
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: February 14, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Anil Kohli, Kurt Hans Wyss
  • Patent number: 8097054
    Abstract: A dust filter bag is in the shape of a flat bag for a vacuum cleaner, which is formed from a first layer and a second layer made of a weldable material. The layers are welded together circumferentially along the circumference thereof.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: January 17, 2012
    Assignee: Eurofilters N. V.
    Inventors: Jan Schultink, Ralf Sauer
  • Publication number: 20120005997
    Abstract: A filter bag assembly and an associated method. The assembly has a filter bag that includes at least two sidewalls of filter material spaced from each other at an open end and connected to provide a closed end of the filter bag assembly. At least one of the sidewalls includes at least one folded pleat. In one specific example, the folded pleat extends perpendicular relative to a direction extending from the open end to the closed end.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 12, 2012
    Applicant: General Electric Company
    Inventor: John Carl Davies
  • Patent number: 8087124
    Abstract: The disclosed disposable vacuum cleaner has a disposable bag with a collar at the bottom, rather than on the sides. Dirty air enters the bag vertically, rather than horizontally, through a duct that is positioned near the floor, separate from the handle on the vacuum cleaner. An elongated, light-weight tube is disposed within the bag, and has a lower end that is connected to the collar. The tube is made of a thin, lightweight, lay-flat tubing with opposed creases, and is flexible and collapsible. It has a length that is greater than half the height of the sides of the bag. The collar has a seal that is trapped between two pieces of mounting material and extends around the periphery of the duct, providing an elastic seal. The bag has a top that is reinforced with a cardboard support. Extending flanges on the support can be used to suspend the bag from arms in the vacuum cleaner.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: January 3, 2012
    Inventor: Melvin E. Wolfe, Jr.
  • Patent number: 8080076
    Abstract: The invention is directed to a nonwoven layer for a filter, in particular, for a vacuum cleaner bag, wherein at least one region of the nonwoven layer, the region having a predetermined thickness and a predetermined area, has an average pore size smaller than 50 ?m and comprises fibers being bonded together such that a movement of the fibers relative to each other in a direction parallel to the surface of the layer is inhibited. The invention is further directed to a filter medium, in particular, for a vacuum cleaner bag, comprising a filter structure wherein a surface or an interface of the filter structure is provided with a filter paper layer having a smaller surface area than the filter structure.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: December 20, 2011
    Assignee: Eurofilters N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Patent number: 8075650
    Abstract: The present disclosure provides a method, apparatus, and system to mount a filter bag to a wet/dry vacuum cleaner by providing an adapter for mounting the filter bag to a drain opening in the wet/dry vacuum cleaner drum and restricting the typical vacuum port, forcing the vacuum materials to enter through the drain opening and into the bag. The lid of the wet/dry vacuum cleaner can be removed independently of the bag to avoid rupturing the bag. Further, the bag can rest on the bottom of the drum for support.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: December 13, 2011
    Assignee: Emerson Electric Co.
    Inventor: Larry D. Hale
  • Patent number: 8002862
    Abstract: Described is a filter bag for a vacuum cleaner which may include a tubular bag with a closed free end area and an opposed, at least partially closed area as well as with a retaining plate. The bag is made from a bag material having at least one non-woven layer, and the at least partially closed area is folded forming a bottomPlies of the bag material which lie the one above the other are formed in areas, and is at least partially closed by a weld seam extending centrally in the bottom, the plies of the bag material which lie the one above the other being at least partially connected to one another.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: August 23, 2011
    Assignee: Eurofilters N.V.
    Inventor: Jan Schultink
  • Patent number: 7993437
    Abstract: Embodiments of the invention generally include a contamination housing assembly and bag for use therein. In one embodiment, a contamination housing assembly includes a housing having an inlet, outlet, and access port. A bagging ring is coupled to the housing and circumscribes the port. A door is provided for covering the port. A bag indicator is coupled to at least one of the containment housing or door and is visible, when in a first position, from an exterior of the containment housing when the door substantially covers the bagging ring. In yet another embodiment, a bag for use with a containment housing is provided. The bag has an open end configured to engage with a bagging ring. The bag includes at least one of a strap or a RF readable tag.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: August 9, 2011
    Assignee: Camfil Farr, Inc.
    Inventor: Mark Huza
  • Patent number: 7985270
    Abstract: A fluidised bed filter comprises a drying pan, and a filter assembly having a membrane over the pan, and a plurality of openings in the membrane. A filter bag is secured to each aperture by means of a clamping ring attached to the rim of the respective aperture, and cooperating with a clamping band within the cuff of the bag. The material of the bag is clamped between the ring and the band. The ring is covered in a cloth strip, which is folded over to produce a flap, which is stitched between the layers of a double fabric forming the membrane. The band is retained in a tunnel formed by a fold in a double fabric forming the filter bag by stitching.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: July 26, 2011
    Assignee: Madison Filter 981 Ltd.
    Inventors: Joseph Johnson, David Anthony Akerman
  • Patent number: 7955407
    Abstract: A filter made of specifically arranged filaments. The filter has an upstream side where fluid enters and a downstream side where fluid exits. The filaments are greatest in diameter near the upstream side wherein the filaments continuously and gradually decrease in thickness toward the downstream side. The pores or spaces between the filaments are largest near the upstream side and decrease gradually toward the downstream side. This allows various size particles to become entrained in the filter in an evenly distributed manner.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: June 7, 2011
    Inventor: H. William Morgan, Jr.
  • Publication number: 20110011043
    Abstract: This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a scrimless filter felt consisting essentially of a needle-punched batt of an intimate blend of fibers consisting of 50 to 79 percent by weight meta-aramid staple fiber, and 21 to 50 percent by weight para-aramid staple fiber; said needle-punched batt having a basis weight of from 10 to 17 ounces per square yard (340 to 580 grams per square meter).
    Type: Application
    Filed: July 20, 2009
    Publication date: January 20, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ANIL KOHLI, KURT HANS WYSS
  • Publication number: 20110011044
    Abstract: This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a filter felt consisting essentially of a batt of an intimate blend of fibers needle-punched to a woven scrim, the blend of fibers consisting of 50 to 70 percent by weight meta-aramid staple fiber, and 30 to 50 percent by weight para-aramid staple fiber; said filter felt having a total basis weight of from 10 to 19 ounces per square yard (340 to 580 grams per square meter).
    Type: Application
    Filed: July 20, 2009
    Publication date: January 20, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ANIL KOHLI, Kurt Hans Wyss
  • Patent number: 7744683
    Abstract: The removable apparatus of a transparent filterable dust bag with a support container is designed as an attachment for a vacuum cleaner and like. A transparent filterable dust bag having an outer transparent wall and an inner filter cone coincides within a transparent support container which keeping the shape and position of the dust bag while separating dust from air. The transparent support container and the outer transparent wall of the dust bag allow to watch inside the filling level of the dust bag and to replace properly.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: June 29, 2010
    Inventor: Yuejie Zhang
  • Patent number: 7641708
    Abstract: An air filter assembly for removing particulate matter from an incoming dirty air stream. The assembly includes a housing having an inlet, an outlet, a dirty air chamber and a clean air chamber and a non-cylindrical shaped elongated filter element arranged within the dirty air chamber constructed to remove particulate matter from an incoming air stream. A plurality of non-cylindrical filter elements are preferred. The non-cylindrical filter elements provide a decreased incoming air stream velocity when compared to conventional cylindrical filter elements having the same surface area. Alternately, the non-cylindrical filter elements allow an increase in the volume of incoming air when compared to conventional cylindrical filter elements having the same surface area.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: January 5, 2010
    Assignee: Donaldson Company, Inc.
    Inventors: Kristofer G. Kosmider, Steven A. Johnson, Thomas D. Raether
  • Publication number: 20090301304
    Abstract: Hot gas filtration fabrics for bag filters can be made using fibers that include high silica fibers and at least one FR fiber. The fabrics can be made using these fibers by needling and/or water jet entanglement. The fabrics may be treated with binders with or without additives to enhance mechanical properties or to impart other characteristics such as gas adsorption. Certain non-woven fabrics made according to the invention have improved high temperatures filtration capabilities and mechanical properties.
    Type: Application
    Filed: May 25, 2007
    Publication date: December 10, 2009
    Applicant: PROPEX INC.
    Inventors: Derek S. Bass, Matthew Stanley Rich, Andries Don Sebastian, William M. Edwards
  • Patent number: 7625418
    Abstract: A pleated fluid filter having a pair of spaced longitudinally extending flanks is formed by at least one layer of a fluid filter media. A spacing member is integral with one of the flanks and extends outwardly in contacting relation with an adjacent flank.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: December 1, 2009
    Assignee: AAF-McQuay, Inc.
    Inventor: Kyung-Ju Choi
  • Patent number: 7611555
    Abstract: A vacuum cleaner bag includes a bottom part having a substantially rectangular base section. A projecting section is disposed proximate to at least one side of the base section. The projecting section, when folded up for the storage position, rests on the base section. Sidewall sections extend peripherally in a direction away from the bottom part to form an inside space.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: November 3, 2009
    Assignee: WOLF GmbH
    Inventors: Heinz-Friedrich Wattenberg, Bernd Wehage
  • Patent number: 7611559
    Abstract: A filter element (1) with a tubular folded bag (2) of folded filter material, which has a plurality of fold blades (3) adjacent each other in the longitudinal direction (10) of the folded bag (2) a closure cover (4) is attached at at least one axial end (7) of the folded bag (2). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades (3) of a folded bag (2) are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades (3) in the longitudinal direction (10) of the folded bag extend back and forth and thereby form a three-dimensional crown structure (18). At least the outer margin of the closure cover (4) has a form corresponding to the crown structure (18) of the fold blades (3).
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: November 3, 2009
    Assignees: Mann & Hummel GmbH, Universitaet Stuttgart Institut fuer Flugzeugbau
    Inventors: Nikolaus Moser, Andreas Beck, Josef Rohrmeier, Matthaeus Huber, Markus Kolczyk, Michael Durst, Yves Klett, Klaus Drechsler, Rainer Kehrle
  • Patent number: 7517393
    Abstract: A jet pulse chamber venturi collector wherein a venturi is provided between the upper end portions of adjacent columns of filter stacks mounted in a dust collector housing wherein particulate laden gases flow downwardly through the venturi and are accelerated to such a degree so as to be pushed directly into the dust collecting hopper. A double pulse cleaning system fires a first pulse of compressed air into the interior of the filter stacks, which is instantaneously followed by a second pulse.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: April 14, 2009
    Inventor: Kenneth L. Richard
  • Patent number: 7513926
    Abstract: A filter for the removal of dust from gases The filter comprises filter elements, on which a flat filter material assembled in superficial honeycombs is installed, which increases the filtration surface. The increased filtration area increases the output of the filter in proportion to the increase in the filtration area, which makes it possible to use a housing with smaller dimensions and to reduce the amount of metal needed for the filter.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: April 7, 2009
    Assignee: Condor-Ecology
    Inventors: Chekalov Lev Valentinovich, Chekalov Vladimir Valentinovich
  • Publication number: 20090049811
    Abstract: A filter bag, filter assembly, and method of making wherein the filter bag including a pair of longitudinally extending fluid pervious filter panels positioned in spaced opposed relation to form filter bag sides therebetween, the opposed longitudinally extending fluid pervious filter panels being connected together by at least one joiner in strip form arranged to extend longitudinally between the longitudinally extending spaced opposed filter panels and fastened on opposite longitudinal side edges of the joiner to the opposed panels from a downstream end to joiner separation points a selected distance from the upstream end.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 26, 2009
    Inventor: Kyung-Ju Choi
  • Patent number: 7438736
    Abstract: A filter bag structure for use in a baghouse that has a tubesheet with a plurality of openings. The filter bag structure includes a substantially cylindrical filter bag having an axial end portion formed into a cuff. The filter bag has filtration media of a substantially electrically non-conductive material. The cuff of the filter bag is to be positioned adjacent an opening and mounted to structure of the tubesheet. An electrically conductive ground wire extends along a portion of the filter bag and has a portion to contact the tubesheet. An electrically conductive anti-collapse ring extends around another portion of the filter bag. An electrically conductive cover secures the anti-collapse ring to the filter bag and provides electrical conductivity between the ground wire and anti-collapse ring.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: October 21, 2008
    Assignee: General Electric Company
    Inventor: Jerry Alan Grey
  • Patent number: 7404835
    Abstract: A debris collection device with a self cleaning retention system that is designed for powered tools such as a sander. One embodiment of the system has an inflatable collection bag and a bag retention system, which further includes an integral bag adapter nozzle for retaining the collection bag to the debris exhaust of a tool such as a sander. For one embodiment of the debris collection device, the retention system can also has a tube, pipe or bracket which connects the adapter to powered tool such as a sander.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: July 29, 2008
    Assignee: Alto U.S. Inc.
    Inventor: Michael Kramer
  • Patent number: 7329296
    Abstract: A filter bag (1) for a filter device includes a tubular, flexible, air-penetrable filter body (6) provided with a suspension arrangement at an unfolded end thereof. The suspension arrangement includes a rigid ring element (7) with outwardly protruding members 10 annularly secured to the unfolded end of the filter body. The ring element (7) is arranged at least partially at an interior part of the filter body (6). Also a filter device including a housing with a dust chamber (4) and a clean-air chamber (5) that are separated by an partition wall (3) suspending at least one filter bag (1) as described above that extends through an opening (2) provided in the partition wall (3) with a main part of the filter body (6) located in the dust chamber (4). The ring element (7) of the filter bag (1) extends at least partially into the opening (2) in the partition wall (3).
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: February 12, 2008
    Assignee: Simatek A/S
    Inventors: Arne Jensen, Keld Christensen
  • Patent number: 6966444
    Abstract: A filter element includes a bag ring which is snap fitted into the filter vessel sidewall and retains both the filter element and a filter basket in the desired location in the vessel until removed.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: November 22, 2005
    Inventor: Howard W. Morgan
  • Patent number: 6911061
    Abstract: A stainless steel filter assembly which filters fluid entering a fluid interactive device, such as a gas analyzer, includes a connection block in the line which has lateral ports for coupling with an inlet coupling and an outlet coupling on a filter. The filter has a folded filter media made of sintered stainless steel panels which are separated by stainless steel screens that increase the surface area of the filter media exposed to the inlet stream of fluid to be filtered.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: June 28, 2005
    Assignee: Nuclear Filter Technology
    Inventors: Michael D. Peterson, Darold M. Popish, Terry J. Wickland, Craig Washburn
  • Patent number: 6840385
    Abstract: A lateral dispersion filter basket provides turbulence at the bottom of the filter basket reducing strain on the bottom seam of the filter bag disposed therein causing the particulate being filtered to move up along the vertical walls of the filter bag.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: January 11, 2005
    Inventor: Sidney Goldman
  • Publication number: 20040128961
    Abstract: A filter bag is provided having a body comprising a filter media of stiffened nonwoven fabric. A method of manufacturing a filter bag comprising a filter media of stiffened nonwoven fabric is also provided.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 8, 2004
    Applicant: U.F. Strainrite Corporation
    Inventor: Alan F. Lapoint
  • Publication number: 20040112019
    Abstract: A washable cloth vacuum cleaner filter bag for use on wet/dry vacuum cleaners and in central vacuum cleaner systems includes a first opening for receiving vacuumed debris, means for attaching the first opening to the inlet of the vacuum cleaner or system, and a second opening, which is reversably sealable, for removing the vacuumed debris from the bag. In combination with the bag, the vacuum cleaner or system may be successfully used to suction up fine particulate debris, including gypsum dust and MDF dust. For a preferred embodiment of the new vacuum cleaner filter bag, the bag, which is of generally rectangular shape, is fabricated from a tight weave, synthetic-fiber cloth having a warp of about 160 threads per inch and a weft of about 68 threads per inch. A variety of fastener types may be employed for the reversably sealable second opening. The second opening incorporates a cuff on one side of the opening which is turned inside out to fold over the edge of the other side of the bag.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Inventor: Robin A. Mountford
  • Patent number: 6706085
    Abstract: A filter assembly for filtering particulates out of a stream of gas, which includes an elongated filter bag made out of fabric with a plurality of pleats intermediate its ends with a support cage made from a plurality of wires on the outside of the bag having portions thereof disposed in the pleats.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: March 16, 2004
    Assignee: Albany International Corp.
    Inventors: Michael Gerakios, Paul Bowden, Ray Moeser
  • Patent number: 6663684
    Abstract: Provided are a dust-collecting filter cloth that comprises a base fabric and web, wherein at least the web includes modified cross-section fibers of polyphenylene sulfide; and a bag filter made of the filter cloth. When fitted to an exhaust gas dust collector, the bag filter involves little pressure loss and ensures increased dust-collecting efficiency. As being resistant to heat and ensuring good dust-collecting efficiency, the filter cloth is useful for dust collection.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: December 16, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Makoto Nakahara, Koji Kawakami, Takehiko Miyoshi
  • Publication number: 20030208998
    Abstract: A filter bag is provided having a body comprising a filter media of stiffened nonwoven fabric. A method of manufacturing a filter bag comprising a filter media of stiffened nonwoven fabric is also provided.
    Type: Application
    Filed: May 10, 2002
    Publication date: November 13, 2003
    Applicant: U.F. STRAINRITE CORPORATION
    Inventor: Alan Fowler Lapoint
  • Patent number: 6626969
    Abstract: An apparatus for mounting a vacuum cleaner filter bag on a vacuum cleaner fill tube includes a filter bag panel. The panel is configured to be grasped by a hand to mount the bag on the fill tube. The panel has an inner edge defining an opening for receiving the fill tube when the bag is mounted on the fill tube. The panel further has an outer edge. A first recessed section of the outer edge is sized and shaped to receive a single finger of the hand when the hand grasps the panel. The first recessed section has a first innermost location. A second recessed section of the outer edge is sized and shaped to receive the thumb of the hand when the hand grasps the panel. The second recessed section has a second innermost location. The innermost locations are spaced apart from each other along an imaginary straight line extending across the opening.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: September 30, 2003
    Assignee: The Scott Fetzer Company
    Inventor: Daniel L. Steele
  • Publication number: 20030172631
    Abstract: The invention relates to a filter bag (11) for holding filtering material located inside a gas-insulated housing of an electrical installation. Said filter bag is produced from a fabric that is resistant to high temperatures, which eliminates the need for holding devices protecting the filter bag from hot switching gases to be provided inside the compressed gas housing.
    Type: Application
    Filed: September 17, 2002
    Publication date: September 18, 2003
    Inventor: Andreas Marth
  • Patent number: 6583072
    Abstract: A nonwoven fabric is formed of polyphenylene sulfide fibers impregnated with a synthetic resin by 5 to 50 wt % based on the total weight of the nonwoven fabric, and has stiffness based on the Gurley method specified in JIS L 1096 of 3000 to 10000 mgf, and can be used as a filter medium for collecting hot dust emitted from refuse incinerators, coal boilers, metal melting furnaces, and others.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: June 24, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Koji Kawakami, Kiyoshi Aihara, Takehiko Miyoshi
  • Patent number: 6537337
    Abstract: A filter for air extraction apparatus is disclosed, which is assembled from a porous material arranged to collect contaminants. The filter comprises a bag with a constricted inlet for receiving contaminated air. The bag is formed from a plurality of envelopes having filtering side walls and each of the envelopes has at least one orifice connected to an orifice of an adjacent envelope.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: March 25, 2003
    Inventors: Philip Arthur Mullins, John Horsey
  • Patent number: 6524359
    Abstract: A filter bag for a pocket air filter includes two side walls. Both lateral edges of the side walls, and the edge of the base are welded to each other. The side walls are made of an air-permeable filter material which can be ultrasonically welded, and at least part of the surface of said side walls is joined by means of interconnected welded spacer elements running substantially parallel to said side walls. The spacer elements are formed by an intermediate layer made from a strip of flexible material, which is alternately welded to the side walls in zig-zag fashion.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: February 25, 2003
    Inventor: Klaus Kluge