Flexible Or Collapsible Bag Type Patents (Class 55/361)
  • Patent number: 9963272
    Abstract: A flat-bottomed bag is formed from a flexible sheet that initially is flat prior to being manipulated to form the bag. The sheet is a laminate of a first web and a second web laminated together by an adhesive layer disposed between the webs. The sheet defines a plurality of serially connected side wall panels collectively defining a vertically extending side wall of the bag, and a plurality of bottom panels respectively connected to the side wall panels at respective fold lines. The bottom panels are folded about the fold lines and are attached together to form a flat bottom wall configured to support the bag in an upright orientation. The adhesive layer is in a partial-coverage pattern that includes adhesive-free regions located along each fold line between each bottom panel and the respective side wall panel connected therewith.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: May 8, 2018
    Assignee: SONOCO DEVELOPMENT, INC.
    Inventor: Jonathan Edward Trollen
  • Publication number: 20150128803
    Abstract: The present application provides a filtration unit for filtering a flow. The filtration unit may include one or more first layers and a second layer. The one or more first layers may include a prefilter layer and a wave layer.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: BHA Altair, LLC
    Inventors: Etienne Rene Pascal Jarrier, Stephen David Hiner
  • Patent number: 8986411
    Abstract: A modular design for large pulse jet fabric filters (PJFF) is divided into similar compartments, which are each “shop-fabricated” in quarter sections prior to delivery to the power plant site. The quarter sections of the compartments are modular and sized so that they can be fabricated at a shop located away from the power plant site and transported by truck over public roads to the power plant site. Once delivered to the site, the quarter sections are bolted together and seal welded to form a PJFF compartment, without requiring additional internal fabrication or welding. The assembled compartment is then lifted onto the support structure as an assembled unit and bolted and/or welded in place. The additional components of the PJFF may also be shop-fabricated offsite to further the benefits of the modular design.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: March 24, 2015
    Assignee: Clyde Bergemann Power Group Americas Inc.
    Inventors: Gregory J. Golub, Gregory C. Swartz, Mark Steven Dutchess
  • Patent number: 8979961
    Abstract: The Invention relates to a vacuum cleaner filter bag comprising a bag wall, wherein the bag wall comprises precisely one nonwoven layer in the form of a melt-spur microfibrous nonwoven layer.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: March 17, 2015
    Assignee: Eurofilters Holding N.V.
    Inventors: Jan Schultink, Ralf Sauer
  • Publication number: 20150059571
    Abstract: Systems and a method for removing carbon nanotubes from a continuous reactor effluent are provided herein. The method includes flowing the continuous reactor effluent through a separation vessel, separating carbon nanotubes from the continuous reactor effluent in the separation vessel, and generating a stream including gaseous components from the continuous reactor effluent.
    Type: Application
    Filed: April 10, 2013
    Publication date: March 5, 2015
    Inventors: Robert D. Denton, Dallas B. Noyes, Russell J. Koveal, JR., Terry A. Ring
  • Patent number: 8961638
    Abstract: A dust-collecting apparatus is described that includes a lift-off door assembly that provides access to the interior of the dust-collecting apparatus while minimizing the adverse effects on the normal operation of the apparatus by maintaining a proper seal between the interior and the exterior of the apparatus. In particular, the lift-off door assembly includes a top plate, a door frame, and a bottom plate. The top plate is secured to the door frame. Lift clips are provided about a perimeter of the bottom plate and are secured to the bottom plate. Lifting ends of the lift clips are positioned over an outer portion of the door frame, such that when a lifting force is applied to the top plate, the top plate, door frame, and bottom plate are lifted together via the lift clips to move the lift-off door assembly from the closed position to the open position.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: February 24, 2015
    Assignee: Dustex Corporation
    Inventor: Patrick M. Paul
  • Patent number: 8956435
    Abstract: A primary filter cage wall element is adapted to form, together with at least one complementary filter cage wall element, a tubular baghouse filter cage segment. The filter cage wall elements are provided with snap-locks, for snapping a first long side of the primary filter cage wall element to a second long side of the complementary filter cage wall element, and for snapping a second long side of the primary filter cage wall element to a first long side of the complementary filter cage wall element.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: February 17, 2015
    Assignee: ALSTOM Technology Ltd
    Inventor: Per-Erik A. Appelo
  • Publication number: 20140331622
    Abstract: A device for filtering air comprising a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve is provided.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Applicant: The Procter & Gamble Company
    Inventors: Dana Paul GRUENBACHER, Steven James SCHROECK, Jessica Elizabeth LEON, Paolo DAL BO, Uwe SCHOBER, Pamela Marie MORISON
  • Publication number: 20140197095
    Abstract: The invention relates to a multi-layer cleanable filter material for gas and liquid filtration, said filter material comprising a filter layer and a substrate layer that follows the filter layer in the flow direction, wherein the filter layer is substantially dendrite-free and consists of a melt-blown fleece made of elastic polymer fibres that has a breaking elongation of at least 100%.
    Type: Application
    Filed: February 9, 2012
    Publication date: July 17, 2014
    Applicant: NEENAH GESSNER GmbH
    Inventors: Andreas Demmel, Ingrid Meyr, Bernd Klausnitzer
  • 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
  • Patent number: 8657929
    Abstract: Presented is a method and apparatus for treating an exhaust gas. A series of filters and conditioning units are used to separate and extract various substances from the exhaust gas, typically originating from an industrial process. In an exemplary embodiment, a cyclone filter, a ceramic filter, a baghouse filter, and a pair of gas conditioners are used to initially separate and extract iron-rich dust from an exhaust gas and then extract zinc from the gas.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: February 25, 2014
    Assignee: Arcelormittal Investigacion y Desarrollo
    Inventor: Naiyang Ma
  • Patent number: 8652230
    Abstract: A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50% while the percentage of pores having a size of greater than 50 microns is less than 0.5%.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: February 18, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Kurt Hans Wyss, Cheng-Hang Chi
  • Patent number: 8529655
    Abstract: The present invention provides a dust collector structure, especially a low-cost and simplified dust collector structure, which includes a leg frame set, an air-guiding box and a driving unit. The leg frame set includes two inverted U-shaped frame rods which are integrally formed and correspond to each other. The air-guiding box is arranged across top ends of the two frame rods, and is made by correspondingly closing an upper cover and a lower cover which are formed through integral draw molding. A driving unit for driving a blowing fan is arranged at an end of the air-guiding box. An air-filtering bag and a dust-collecting bag corresponding to each other are arranged at an end opposite to the driving unit on the upper and lower covers of the air-guiding box. Thus, structural components can be greatly simplified.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: September 10, 2013
    Inventor: Chun-Hsiang Wang
  • Patent number: 8484798
    Abstract: A system includes a vacuum cleaner with a dust chamber having ribs and a dust bag including a fleece disposed on a supporting structure. The fleece includes a plurality of fleece corrugations, with a distance between the fleece corrugations being matched to a distance between the dust chamber ribs. The resultant matching of the fleece corrugation spacing and the spacing of the dust chamber rib prevents partial or large-area contact of portions of the dust bag with an inner surface of the dust chamber.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: July 16, 2013
    Assignee: Miele & Cie. KG
    Inventors: Eduard Sailer, Martin Kornberger, Guenther Ennen, Stefan Tiekoetter
  • Patent number: 8479356
    Abstract: The present invention relates to a vacuum cleaner filter bag comprising an inlet opening, a retaining plate, which is situated on the exterior of the bag in the vicinity of the inlet opening and can be attached to a retaining device of a vacuum cleaner in order to fix the vacuum cleaner filter bag, and a closing device situated in the vicinity of the inlet opening, which is configured in such a way that it adopts a first position when the retaining plate is not attached to the retaining device and a second position by the attachment of the retaining plate to the retaining device, wherein the inlet opening is closed in the first position of the closing device and is open in the second position of the closing device.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: July 9, 2013
    Assignee: Eurofilters Holding N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Publication number: 20130167492
    Abstract: The present disclosure relates to a sealing device 20 for a control rod 17, passing through an aperture 15c in a wall 15, wherein the control rod 17 is connected between an actuator 13, placed on one side of the wall, and a controlled entity 9a, placed on the other side of the wall, such that the actuator can control the controlled entity with motion of the control rod. The sealing device 20 includes a packing box 37 through which the control rod 17 passes and a seal 41 which provides a sealing function between the control rod 17 and the packing box 37. The packing box 37 is moveable with the control rod 17 in relation to the wall 15. Wall aperture 15c is sized to allow movement of the control rod 17 within aperture 15c. A flexible member 39 surrounds a portion of control rod 17 and extends between the packing box 37 and the wall 15, in a gastight communication with each. As such, the subject sealing device allows movement of the control rod without compromising the sealing function efficiency thereof.
    Type: Application
    Filed: September 1, 2011
    Publication date: July 4, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Anders Erik Hjelmberg
  • 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
  • Patent number: 8424154
    Abstract: A vacuum cleaner having a housing with a dust container having an inlet for dust laden air, a filter unit comprising a flexible filter body, a motor fan unit for generating a flow of air through the inlet and through the filter unit, and a dust removing means configured to agitate the flexible filter body in response to a force applied to the dust removing means.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: April 23, 2013
    Assignee: AB Electrolux
    Inventors: Jonas Beskow, Håkan Miefalk
  • Patent number: 8409311
    Abstract: The invention relates to a filtering device, comprising a tubular filter element and a carrier part, with the filter element fastened thereon. The carrier part can be inserted between an unfiltered fluid pipe and a filtered fluid pipe. The pipes can be assembled into a continuous flow pipe, wherein the filter element protrudes into the pipe interior.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: April 2, 2013
    Assignee: Mann+Hummel GmbH
    Inventors: Thomas Jessberger, Markus Hanselmann, Hans-Peter Scholl, Klaus Waltenberg, Stefan Walz, Jobst Eisengräber-Pabst, Andreas Pelz, Johannes Lampert, Michael Thienel, Daniela Knodel, Joachim Streich, Sascha Bauer
  • Patent number: 8377175
    Abstract: Presented is a method and apparatus for treating an exhaust gas. A series of filters and conditioning units are used to separate and extract various substances from the exhaust gas, typically originating from an industrial process. In an exemplary embodiment, a cyclone filter, a ceramic filter, a baghouse filter, and a pair of gas conditioners are used to initially separate and extract iron-rich dust from an exhaust gas and then extract zinc from the gas.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 19, 2013
    Assignee: ArcelorMittal Investigacion y Desarrollo, S.L.
    Inventor: Naiyang Ma
  • Publication number: 20120318136
    Abstract: A nonwoven felt for hot gas filtration. The fibers have a polyarylene sulfide (PAS) component that contains a zinc compound. In one embodiment, the PAS comprises at least one zinc(II) salt of an organic carboxylic acid. Also a method for filtering hot gases employing a bag made from a PAS component that contains a zinc or a zinc based additive.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT JOHN DUFF, Zheng-Zheng Jenny Huang, Lakshmi Krishnamurthy, Rakesh Nambiar, Joel M. Pollino, Joachim C. Ritter, Harry Vaughn Samuelson, Cheng-Hang Chi
  • Publication number: 20120311977
    Abstract: A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50% while the percentage of pores having a size of greater than 50 microns is less than 0.5%.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 13, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Kurt Hans Wyss, Cheng-Hang Chi
  • Publication number: 20120216493
    Abstract: The Invention relates to a vacuum cleaner filter bag comprising a bag wall, wherein the bag wall comprises precisely one nonwoven layer in the form of a melt-spur microfibrous nonwoven layer.
    Type: Application
    Filed: September 21, 2010
    Publication date: August 30, 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: 8211195
    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: Grant
    Filed: May 25, 2007
    Date of Patent: July 3, 2012
    Assignee: Propex Inc.
    Inventors: Derek S. Bass, Matthew Stanley Rich, Andries Don Sebastian, William M. Edwards
  • Patent number: 8157879
    Abstract: A vacuum cleaner filter bag with an inlet opening and a deflection device arranged in the area of the inlet opening, which is configured in such a way that an air stream flowing through the inlet opening can be deflected.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: April 17, 2012
    Assignee: Eurofilters Holding N.V.
    Inventors: Ralf Sauer, Jan Schultink
  • Patent number: 8110025
    Abstract: A dust collector for collecting sawdust and wood chips during use of wood working tools includes a conduit or hose connected through an impeller forcing air with entrained dust and chips to an inlet ring of a single stage dust collector. A particle collector reservoir is connected on the bottom of the inlet ring and a filter element is connected on top of the inlet ring. A tapered ring wall with a central opening is provided in the inlet ring and a baffle is mounted in the central opening of the ring wall. The baffle is of a cone shape and tapers an opposite direction from the frusto-conical ring wall. The inlet opening of the inlet ring is directed to between the ring wall and the baffle.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 7, 2012
    Assignee: Walter Meier (Manufacturing) Inc.
    Inventor: Barry Martin Schwaiger
  • Patent number: 8043383
    Abstract: A method for reducing formaldehyde emissions from articles prepared from, or which otherwise comprise formaldehyde-emitting compositions, such as formaldehyde-containing resins, is described. The method relates especially to a method for reducing formaldehyde emissions from products such as cellulose laminates, permanent press (wrinkle-free) textiles, floral foams and ceiling or acoustical tiles, which involves isolating the article in an enclosed space with a formaldehyde scavenger, particularly a formaldehyde scavenger carried by a substrate.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: October 25, 2011
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Kim K. Tutin, Kurt Gabrielson, Richard Rediger
  • Patent number: 8038776
    Abstract: An inlet air filtration system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a plurality of filter elements mounted inside the air plenum, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and is sufficient to produce a corona discharge from the electrodes, wherein an amount of current applied to the filter elements is about 0.1 ?A/ft2 to about 15 ?A/ft2.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: October 18, 2011
    Assignee: BHA Group, Inc.
    Inventors: Jamison W. Janawitz, Bradley S. Rogers, James Easel Roberts, Thomas Shannon Eckhoff, Robert W. Taylor
  • Patent number: 8007573
    Abstract: A filter includes a membrane having pores and that is air permeable. A nanoparticle precursor is dispersed throughout the pores, and the nanoparticle precursor is responsive to a stimulus to form a catalytically active nanoparticle. An associated method is also provided.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 30, 2011
    Assignee: General Electric Company
    Inventors: Vishal Bansal, Benjamin Hale Winkler, Hieu Minh Duong, Tamaki Ryo
  • Publication number: 20110162335
    Abstract: A filtration assembly for use with a suction cleaning device, the filtration assembly including a housing body for housing one or more filters; and a motor driven impeller which generates suction for drawing air and any entrained material into an inlet through the one or more filters and discharging the air through an outlet; wherein the one or more filters includes a first bag filter received by the housing body, the first bag filter including a base portion and a side portion which define a cavity for holding any material that cannot pass through the first bag filter; and, wherein the side portion of the first bag filter is laterally spaced apart from a wall portion of the housing body such that a gap is formed between the side portion and the wall portion.
    Type: Application
    Filed: September 1, 2010
    Publication date: July 7, 2011
    Inventor: Tibor FREI
  • Patent number: 7955404
    Abstract: A dust collector includes a shell, an exit tube, an inner tube, a suction device, a first dust container, a bypass tube and a first dust bag. The shell defines a first receiving room therein. The exit tube defines an exit passage therein. The inner tube defines a connection passage which has a first opening and a second opening. The first opening communicates the first receiving room, and the second opening communicates the exit passage. The suction device provides the exit passage with a negative pressure. The first dust container defines a second receiving room therein. A mesh is disposed on a bottom surface of the first dust container to divide the second receiving room into a first chamber and a second chamber. The bypass tube defines a bypass passage therein, and it communicates the connection passage with the second chamber. The first dust bag is disposed in the first chamber.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: June 7, 2011
    Inventor: Tony Lin
  • Patent number: 7799107
    Abstract: A filtration bag assembly may include an air permeable bag and a collar affixed thereto. The collar may include an opening that communicates with the interior of said bag and at least one panel that is movable to selectively obscure the opening. The collar includes a bottom surface and a pair of opposed tabs extending laterally from opposed lateral edges of the collar. A bracket is secured to the floor cleaning apparatus and includes a pair of opposed legs, that each includes a first ramp surface and a second ramp surface. During insertion of the collar into said bracket, the first ramp surface slidingly contacts the bottom surface and the second ramp surface slidingly contacts said tabs to move the collar upwardly into fluid communication with a nozzle.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: September 21, 2010
    Assignee: Techtronic Floor Care Technology Limited
    Inventors: Richard E. Corney, Jonathan E. Fawcett
  • Publication number: 20100218469
    Abstract: A bag filter (100) comprises a plurality of functional modules (1-4) associated with each other and adapted to perform respective functions in the bag filter. One or more functional modules (1-4) of said plurality of functional modules (1-4) have a respective structure obtained at least partially from one or more freight containers (10). A method for constructing such a bag filter (100) is also described.
    Type: Application
    Filed: October 2, 2008
    Publication date: September 2, 2010
    Applicant: RD42 TECHNOLOGIES S.R.L. A SOCIO UNICO
    Inventor: Giorgio Radaelli
  • Publication number: 20100212272
    Abstract: Filter media which may be used in ASHRAE applications are described. The media include a fiber web and has desirable performance characteristics.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Applicant: Hollingsworth & Vose Company
    Inventors: David F. Sealey, Marianne Lane
  • Publication number: 20100180558
    Abstract: The present invention provides a nonwoven fabric for cylindrical bag filter, wherein a long-fiber nonwoven fabric made of a synthetic fiber is used and the long-fiber nonwoven fabric is a long-fiber nonwoven fabric which is made of a thermoplastic continuous filament and is partially thermocompression-bonded. It is preferable that the circular arc flexural rigidity per basis weight is 0.050 to 1.000 ((cN/2 cm)/(g/m2)) and the air permeation rate per basis weight is 0.010 to 0.500 ((cc/cm2/sec)/(g/m2)).
    Type: Application
    Filed: May 28, 2008
    Publication date: July 22, 2010
    Applicant: Toray Industries, Inc
    Inventors: Masashi Ito, Tatsuya Kawakami, Yoshikazu Yakake
  • 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: 7717973
    Abstract: A cyclone dust-separating apparatus includes a cyclone unit having air inflow and air outflow parts that separate dust or dirt from air, the cyclone unit being installed such that a longitudinal axis thereof is substantially horizontally arranged; a dust bin joined to a bottom end of the cyclone unit that collects the dust or dirt separated by the cyclone unit, the dust bin installed in such a manner that a longitudinal axis thereof is substantially perpendicular to the longitudinal axis of the cyclone unit; a nonporous envelope detachably disposed in the dust bin that stores the dust or dirt collected into the dust bin; and a pressure difference-generating passage to communicate an outlet of the air outflow part and the dust bin with each other so as to allow the nonporous envelope to come in contact with an inner surface of the dust bin by a pressure difference between the dust bin and the air outflow part.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: May 18, 2010
    Assignee: Samsung Gwangju Elecetronics Co., Ltd.
    Inventors: Jang-keun Oh, Tak-soo Kim, Jin-gon Lee, Young-jun Cho
  • Patent number: 7695551
    Abstract: An inlet air filtration system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a plurality of filter elements mounted inside the air plenum, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and at the same time, the voltage is sufficient to produce a corona discharge from the electrodes.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: April 13, 2010
    Assignee: BHA Group, Inc.
    Inventors: Jamison W. Janawitz, Bradley S. Rogers, James Easel Roberts, Thomas Shannon Eckhoff
  • Patent number: 7695537
    Abstract: A dust collector with a function of secondary collection is composed of a bottom base,an air guiding box installed above the bottom base and bored with a suction hole and a dust collecting hole at its upper and bottom surface respectively, a guiding device set inside the air guiding box, a filtering bag fixed on the guiding device, and a dust bag sealed with the lower dust collecting hole of the air guiding box. In using, dust can be drawn in by a blower to enter the air-guiding box. With a secondary filtration to prolong a service life of the filtering bag.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: April 13, 2010
    Assignees: San Ford Machinery Co., Ltd.
    Inventor: Chieh-Yuan Cheng
  • Patent number: 7695538
    Abstract: A negative pressure dust collector with a dust receiving bag comprises a ventilation hood and an exhaust device. The ventilation hood includes a motor, fan blades, and a first exit. A dust collection tank is positioned below the first exit. The exhaust device comprises a ventilation tube and a flexible tube.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: April 13, 2010
    Assignee: San Ford Machinery Co., Ltd.
    Inventor: Yun-Tai Cheng
  • 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
  • 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: 7611554
    Abstract: The collector bag is provided that includes a fabric formed to define an internal volume, a plurality of sewn loops for disposal about an outer periphery of the collector frame, and a gather of fabric at each of the plurality of sewn loops for disposal about an inner circumference of the collector frame. The plurality of sewn loops are secured to the gather so that the internal volume of the collector bag, when disposed on the collector frame, is at least about 90 percent of a maximum volume of the collector frame.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: November 3, 2009
    Assignee: Woodland Products, Inc.
    Inventor: James Carpenter Whitney
  • 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: 7566354
    Abstract: A filter assembly attachable to the discharge opening of a contaminated air source includes a filter having an outer periphery; a flexible conduit having a continuous side wall, an outer end attachable to the discharge opening, and an inner end attachable about the periphery of the filter; and a flexible side protrusion extending from the conduit sidewall, the protrusion having an inner end in communication with the interior of the conduit and a closed outer end. The filter can be mounted within an enclosure with an inlet opening and a discharge outlet, the conduit extending through the inlet opening and the filter being located within the enclosure.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: July 28, 2009
    Assignee: Flow Sciences, Inc.
    Inventors: Raymond F. Ryan, John H. McNally
  • Patent number: 7527674
    Abstract: An inlet air treatment system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a moisture removal system, and an air filtration system located downstream from the moisture removal system. The moisture removal system includes a plurality of S-shaped vanes, and a mesh structure downstream from the plurality of S-shaped vanes. The air filtration system includes a plurality of filter elements, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and at the same time, the voltage is sufficient to produce a corona discharge from the electrodes.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 5, 2009
    Assignee: BHA Group, Inc.
    Inventors: Jamison W. Janawitz, Bradley S. Rogers, James Easel Roberts, Thomas Shannon Eckhoff
  • Publication number: 20090031681
    Abstract: A filter pipeline for an air intake system of an internal combustion engine has a tubular body and a filter element arranged in the tubular body. The filter element is a filter bag of a flexible material that has an opening and is attachable in the area of the opening to the tubular body. The filter bag and an inner wall of the tubular body are shaped such that in a circumferential direction of the pipeline different spacings are provided between the filter bag and the inner wall of the tubular body.
    Type: Application
    Filed: February 14, 2007
    Publication date: February 5, 2009
    Applicant: MANN+HUMMEL GMBH
    Inventors: Jochen Linhart, Sascha Bauer, Michael Fasold
  • Patent number: 7485592
    Abstract: This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight polyphenylene sulfide fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of polyphenylene sulfide and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the polyphenylene sulfide fiber.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: February 3, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Anil Kohli, Herman Hans Forsten, Kurt Hans Wyss
  • Patent number: 7468083
    Abstract: A vacuum cleaner includes a housing having a filter bag cavity. A suction generator and a bag mount are both carried on the housing. Additionally, the vacuum cleaner includes a bag caddy that is displaceable between an operating position connected to the bag mount and a bag disposal position disconnected from the bag mount.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: December 23, 2008
    Assignee: Panasonic Corporation of North America
    Inventors: Ronald E. Davis, James T. Crouch, Chad D. Overvaag