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| Number | Title | Issue Date |
| 8114180 | Bag filter comprising scrimless filter felt of meta-and-para-aramid staple fiber 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 we... | 02/14/2012 |
| 8097054 | Dust filter bag 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. ... | 01/17/2012 |
| 8080076 | Nonwoven layer for a filter and filter medium 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 μm... | 12/20/2011 |
| 7955407 | Filtration element having a variable density sidewall 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 t... | 06/07/2011 |
| 7438736 | Filter bag structure 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 substant... | 10/21/2008 |
| 7404835 | Collection device with self sealing retention system 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 ... | 07/29/2008 |
| 7367998 | Filter element and method for producing it and tank breather filter with a filter element of this kind The invention relates to a filter element (50), in particular for a tank breather filter (10), the filter element (50) being produced from a flat filter material. To form the filter element (50) in such a way that it can be produced at lo... | 05/06/2008 |
| 7329296 | Filter bag and a filter device provided with such filter bag 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 prot... | 02/12/2008 |
| 7186287 | Disposable filter for a fluid handling device and a method for using the same A fluid handling device having a support frame and a plurality of filter frames attached thereto. Each of the filter frames has an outer frame member that removably secures a filter; the filters being either a planar filter, pocket filter, or multiple pocket filter.... | 03/06/2007 |
| 7171719 | Disposal apparatus A receptacle apparatus 10 which includes a receptacle 14 into which refuse is placed very shortly after it is placed within the apparatus 10, thereby reducing the likelihood that it will be undesirably communicated into the surrounding environme... | 02/06/2007 |
| 7051453 | Particulate trap cleaning system A system for cleaning a particulate trap comprises locating the trap in a chamber and forcing cleaning air through the trap. The air and removed particulates is extracted from the trap towards a filter. The expelled air essentially without the removed particulates f... | 05/30/2006 |
| 7052532 | High temperature nanofilter, system and method A filter, system and method is provided for filtering nanoparticles in a hot gas, namely particles about 200° C. and further particularly >about 450° C. including diesel exhaust. The filter includes filter media material composed of fibro... | 05/30/2006 |
| 6966444 | Filter with snap-fit filter bag 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. ... | 11/22/2005 |
| 6926761 | Electronic breather bag filter A breather bag filter assembly for use with an electronic enclosure, such as a hard disk drive enclosure containing a rotating disk, is disclosed. The filter assembly provides filtration of air entering and exiting an electronic enclosure through a breather hole. Th... | 08/09/2005 |
| 6916363 | Air filter An air filter in which a thick sheet of textile of three-dimensionally knitted synthetic fiber thread is sliced at a middle position in a thickness direction and separated into a front face and a rear face. The front face or the rear face is one face side, and many ... | 07/12/2005 |
| 6911061 | In-line HEPA filter 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 ... | 06/28/2005 |
| 6840385 | Lateral dispersion filter basket 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. ... | 01/11/2005 |
| 6706085 | Filter bag cage 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 portio... | 03/16/2004 |
| 6663684 | Dust collecting filter cloth and bag filter 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 colle... | 12/16/2003 |
| 6626969 | Mounting collar for a vacuum cleaner filter bag 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 receivi... | 09/30/2003 |
| 6583072 | Fabric from impregnated polyphenylene sulfide fibers 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... | 06/24/2003 |
| 6537337 | Air filter for extraction apparatus 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 envel... | 03/25/2003 |
| 6524359 | Filter bag for a pocket air filter and method for the production thereof 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 l... | 02/25/2003 |
| 6517919 | Laminate and pulse jet filter bag A laminate product is provided. The laminate product includes a first layer of porous expanded polytetrafluoroethylene membrane, and a second layer of woven fabric of polytetrafluoroethylene containing yarn. The membrane preferably has an air permeability... | 02/11/2003 |
| 6379409 | Dust bag The invention relates to a dust bag to be used primarily in vacuum cleaners, the dust bag having at least two opposing wall portions of filter material in an overlaying state and an intake opening for receiving a socket piece of a vacuum cleaner. The two ... | 04/30/2002 |
| 6306188 | Filter bags having distance elements of progressively differing lengths, and method of forming same Method for the fabrication of filters with deep folds connecting of opposed sides of the filter to prevent blow-out, by welding intermediate distance elements to the filter material on each side. The distance elements include bridges and/or connections be... | 10/23/2001 |
| 6258142 | Multi-pocket filter A filter element, as in a filter bag, comprises a pocket having partitions between the side walls to form pocket portions. The margins of the partitions are welded ultrasonically to the inner surface of the layers. The inlet end of the partitions may be s... | 07/10/2001 |
| 6156086 | Dual media vacuum filter bag There is provided a vacuum cleaner filer bag including at least two sidewalls which sidewalls are joined by seams. At least one first sidewall comprises a film laminate of a heat sealable film layer and a film support layer. At least one second sidewall c... | 12/05/2000 |
| 6110243 | Cleanable filter bag assembly The present invention is directed to novel filter bag assemblies comprising a support structure, such as a support cage of metal, plastic, or the like, and a filter media of expanded PTFE membrane(s) without a backing material or layer. In a preferred emb... | 08/29/2000 |
| 6071322 | Dust container for vacuum cleaners A dust container for vacuum cleaners includes a bag and a front plate. The bag is made of a material that, essentially, is permeable only to air. The front plate encloses a suction opening in the bag. The front plate is of a shape that is independent of t... | 06/06/2000 |
| 6010458 | Spirometer filter media and device The present invention is a spirometer mouthpiece assembly having a bag or sock filter medium. A support mechanism is incorporated into the assembly to prevent the filter medium from becoming dislodged during use. This not only protects the user of the spi... | 01/04/2000 |
| 6010548 | Spaced pocket filter assembly and method of manufacturing same A spaced pocket filter assembly has a pocket secured to a holding frame and a spacing member within the pocket made of a single sheet of material. The spacing member has an alternately folded Z or zig zag configuration and is secured to the interior of th... | 01/04/2000 |
| 5964404 | Vacuum bag scenting system A vacuum bag scenting system is disclosed including a vacuum bag having a pair of faces which are spaced apart upon inflation of the vacuum bag. A closed cellophane bag is disposed in the vacuum bag and coupled to each of the faces of the vacuum bag. A sc... | 10/12/1999 |
| 5928396 | Pocket filter and method and apparatus for making the same A filter bag assembly and method and machinery to form the same wherein spaced opposed filter bag panels are connected together by transversely extending preselectively sized binder strips fastened selectively at opposed ends to the spaced filter panels t... | 07/27/1999 |
| 5846274 | Manhole biofilter A biofilter for use in a manhole of a sanitary sewer system which allows sewer gases to escape from the system driven by the pressure differential between the aboveground atmosphere and the underground pressure. Sewer gases are chemically changed by their... | 12/08/1998 |
| 5800580 | Support cage for glass fiber bag filter for gas filtration A filter assembly for gas filtration including a support cage and a filter bag made of, or which includes, a fabric containing fiberglass yarns. The support cage has widely spaced vertical supports which provide filter bag support surfaces having a large ... | 09/01/1998 |
| 5753001 | Filter unit and process for manufacturing a filter unit A self-supporting filter unit having at least one passage (10) defined by wall portions (12) made from air-permeable fiber fabric, through which wall portions air can pass and be drawn off along the passage but which prevent the passage therethrough of du... | 05/19/1998 |
| 5658362 | Vacuum cleaner and filter bag with air management Vacuum cleaner canisters and vacuum cleaner filter bags are provided with weir members disposed in the path of particle laden air flowing through the vacuum cleaner. The particle laden air flows across the top and/or side edges of the weir members creatin... | 08/19/1997 |
| 5643451 | Filter bag having a rim intermittently bonded to a porous portion A liquid filter includes a housing and a filtering bag supported within the housing to remove soiled matter from processed fluids being filtered. The filter bag includes a rim and a pouch made out of a flexible material which is secured to the rim by a se... | 07/01/1997 |
| 5607491 | Air filtration media An air filtration media comprises a single layer of randomly oriented and randomly intermingled synthetic, polymeric resin microfibers, staple fibers and bonding fibers. The microfibers, taken as a whole, have an average fiber diameter no greater than 5 m... | 03/04/1997 |
