Gas Flow From Inside To Outside Of Filter Patents (Class 55/341.2)
  • Patent number: 9533245
    Abstract: A filter device of the present disclosure includes at least a sheet-shaped fiber structure having a plurality of fibers made of amorphous silicon dioxide, wherein the plurality of fibers are tangled and thus connected together to form voids in the sheet-shaped fiber structure. A filter device of the present disclosure corresponds to an analysis device including: a substrate; a flow path formed on the substrate; and a sheet-shaped fiber structure provided on the inner wall of the flow path, wherein the sheet-shaped fiber structure includes a plurality of fibers made of amorphous silicon dioxide, and the plurality of fibers are tangled and thus connected together to form voids in the sheet-shaped fiber structure.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: January 3, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Masaya Nakatani, Hiroaki Oka, Daniel Yazbeck, Takeki Yamamoto, Takahiro Nogami
  • Patent number: 9339822
    Abstract: An electrostatic precipitator having an adaptive discharge electrode is disclosed. In some embodiments, the discharge electrode may be formed of a non-ohmic material that exhibits a saturation velocity above a voltage threshold. The non-ohmic material may have a semiconductor with doping impurities or ceramics. In other embodiments, the discharge electrode is formed of an ohmic material characterized by increased resistance through the discharge electrode.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 17, 2016
    Inventor: Bruce Edward Scherer
  • Patent number: 9238451
    Abstract: The disclosed vacuum assembly can be mounted in a vehicle. The motor/fan assembly is positioned above a chassis wall. Lateral flanges on opposed sides of the tank support the tank in generally horizontal sliding motion from a forward position to an elevated rearward position. A rear flange supports the tank as it pivots to a mounted position in which an inlet on a removable lid on the tank communicates with a hose, and an outlet on the lid communicates with the motor/fan assembly. In a removed position, the inlet and outlet are disconnected. Alignment bosses fit in aligned openings when the tank is in the mounted position.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: January 19, 2016
    Assignee: SHOP VAC CORPORATION
    Inventors: Neil N. Norell, James M. Robitaille, Matthew L. Huff, Melvin E. Wolfe, Jr.
  • 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: 20090145094
    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: Application
    Filed: November 10, 2006
    Publication date: June 11, 2009
    Applicant: MADISON FILTER 981 LIMITED
    Inventors: Joseph Johnson, David Anthony Akerman
  • Publication number: 20080302070
    Abstract: A particularly advantageous vacuum cleaner system has at least two filters and self-cleans its filters via back-flushing, without needing to stop normal operation to self-clean. Also, a self-cleaning valve assembly is provided for use in a vacuum cleaner. Also, a vacuum cleaner is provided that uses permanent, self-cleaning filters, and does not need disposable filters or filter bags, and advantageously can use inexpensive plastic bags. In another vacuum cleaner system, waste is collected in an ordinary plastic bag without any special preparation or modification of the bag being needed. Further, an inventive self-cleaning X-valve assembly cleans itself and is useable in the vacuum cleaner system.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 11, 2008
    Inventor: Charles A. Castronovo
  • 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: 6694727
    Abstract: An exhaust processor includes a soot filter and a filter regenerator. The filter regenerator is configured to burn off particulate matter collected in the soot filter to regenerate the soot filter.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: February 24, 2004
    Assignee: Arvin Technologies, Inc.
    Inventors: Wilbur H. Crawley, John Nohl
  • Patent number: 6290752
    Abstract: A filter device for adsorption of gaseous constituents from a gas flow includes a filter chamber with filters arranged therein, a clean-gas chamber connected to the first chamber in a fluid-conducting manner via the filters, and a collection chamber arranged beneath the filter chamber, is open toward the filter chamber and has an interior which narrows toward the bottom. An unfiltered-gas duct which leads from the outside, is arranged in the lower area of the collection chamber in such a manner that it can be adjusted in the direction toward the filters. A dust-discharge device, which leads toward the outside, is arranged in the lower area.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: September 18, 2001
    Assignee: Von Roll Umwelttechnik AG
    Inventors: Felix Koller, Rudolf Frey, Rainer Flury
  • Patent number: 6245130
    Abstract: A bag filter system for filtering fluid has been invented which has, in certain aspects, a mount apparatus having at least one mount opening therethrough for emplacement therethrough of part of a bag filter, at least one bag filter having a support member and filter material connected to the support member, the filter material suitable for insertion through the at least one mount opening of the mount apparatus, the support member having a fluid opening through which the fluid is flowable to the filter material, an interface between the support of the at least one bag filter housing member and the mount apparatus, and a seal member encompassing the support member/mount apparatus interface and interposed therebetween to inhibit fluid leakage through said interface. The bag filter system's seal member in certain aspects is a seal member around the fluid opening, and a mount apparatus seal member is disposed around the at least one mount opening.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: June 12, 2001
    Inventors: Philip D. Maybee, Guy L. McClung
  • Patent number: 6233926
    Abstract: An apparatus and method are disclosed for removing or filtering particulate from an internal combustion engine exhaust and/or for regenerating through flow particulate traps with the incoming flow of exhaust gas. The particulate trap modules have through flow passageways with porous walls for filtering particulate in the exhaust gas. The passageways are regenerated by periodically passing the exhaust gas there through at a velocity sufficient to erode or dislodge the soot and/or ash. Apparatus is provided to separate, burn and store the dislodged soot and/or ash. Having devices and catalysts may also be used to aid in the removal of soot and/or ash.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: May 22, 2001
    Assignee: Illinois Valley Holding Company
    Inventors: John M. Bailey, Donald J. Waldman