Suspended Or Supported By Bracket Or From Top Of Frame Patents (Class 55/508)
  • Patent number: 11746731
    Abstract: An air cleaner for an internal combustion engine is disclosed. The air cleaner may include a housing defining an interior and having a first end and a second end opposite the first end. The housing may include an air inlet configured to be fluidly coupled to an air intake of the internal combustion engine and an air outlet configured to be fluidly coupled to a compressor of the internal combustion engine. The housing may include a general cylindrical shaped section extending from the first end and an inverse taper section located distally from the generally cylindrical shaped section and extending towards the second end. A diameter of the inverse taper section may increase from a first end towards the second end.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: September 5, 2023
    Assignee: Caterpillar Inc.
    Inventors: Vincent P. Caliendo, Cooper Melvin, Nathan Whitman, Chelsea Ocampo, Jeffrey Ledford
  • Patent number: 11452962
    Abstract: What is presented is an interface between a hopper and a dust receptacle of a dust collector system, wherein the hopper has an outlet through which collected dust drops. A slide gate is mounted to the outlet of the hopper and a spout is mounted to the slide gate. A lid is configured to secure to the top of the dust receptacle. The lid has a coupling configured to secure to the spout. A slot comprising a locking feature is located on either the spout or the coupling. A rod corresponding to the slot is mounted to the other of the spout or the coupling than which the slot is located. The lid may be removed from the dust receptacle by lifting the lid to move the rod through the slot and the lid is secured by twisting the coupling relative to the spout to move the rod into the locking feature.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: September 27, 2022
    Assignee: Imperial Systems, Inc.
    Inventor: Jeremiah Wann
  • Patent number: 8961637
    Abstract: Z-filters capable of cleaning particulate matter from airflow streams. Methods for retrofitting bag house dust collectors.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: February 24, 2015
    Assignee: Donaldson Company, Inc.
    Inventors: Thomas D. Raether, Brian Zauner
  • Patent number: 8870995
    Abstract: The air filter system includes a cover that is configured to secure itself adjacent to an HVAC register. The cover includes hanger members on distal ends, which hook onto screw holes of the HVAC register. The cover includes a plurality of openings forming a vent through which air is able to pass. The cover is configured to be loosely hung underneath the HVAC register such that air-conditioned air is able to blow through the cover as well as along a peripheral opening formed between the cover and the HVAC register. The cover includes a filter member that is selectively removed, and positioned in between the cover and the HVAC register. The filter has a rectangular shape that corresponds to the cover. The filter also has lipped peripheral portion that has a thickness greater than a center portion.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: October 28, 2014
    Inventor: Kelly Bender
  • Publication number: 20140083299
    Abstract: A filter apparatus (12) is equipped with a first body (20), a case unit (22) connected to a lower part of the first body (20), and a filter unit (24), which is accommodated in the interior of the case unit (22). The case unit (22) is made up from an outer case (40), which is formed as a bottomed cylinder from a light-permeable transparent material, and an inner case (42) that is inserted into the interior of the outer case (40). The case unit (22) is inserted into an installation hole (36) that opens on the lower part of the first body (20), and by rotation thereof, projections (58) and retaining walls (56) provided on an outer circumferential surface of the case unit (22) are made to engage with support members (38) provided in the installation hole (36), to thereby result in a connected state.
    Type: Application
    Filed: July 21, 2011
    Publication date: March 27, 2014
    Applicant: SMC KABUSHIKI KAISHA
    Inventors: Norihide Yamase, Daisuke Oikawa
  • Patent number: 8628605
    Abstract: A filter assembly system including, a filter bag having an opening, a seal coupled to the filter bag adjacent the opening, wherein the seal comprises a gasket band and a perforated metal band, and the perforated metal band is configured to bias the gasket band in a radial direction into a sealed position upon expansion or contraction of the perforated metal band.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: January 14, 2014
    Assignee: General Electric Company
    Inventor: James Roy Doehla
  • Patent number: 8580004
    Abstract: A high efficiency unitary cartridge filter for installation with a separate sealing gasket in a generally uniform circular or oblong hole of a baghouse tube sheet. The cartridge includes a plastic or metal tubular core around which is wrapped elongate pleated filter media to form a pleat pack. The pleat pack is sealed at the lower end thereof by a molded cap. A molded upper fitting includes an aerodynamically contoured transition mouth comprising compound radii of curvatures and a bore which closely corresponds to the bore of the tubular core for improved cleaning power and increased pressure during a cleaning cycle and for reduced pressure drop during normal filtering operation. The molded top may optionally incorporate and bond with a metal collar for added structural integrity and may also incorporate electrical grounding elements for grounding a metal core to the baghouse tube sheet.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: November 12, 2013
    Assignee: iFil USA, LLC
    Inventor: Jack T Clements
  • Patent number: 8540789
    Abstract: A filter element comprises a pleated filter (10), one end of which is received in an end cap (11), which is made up of a unitary molding comprising an end part (21) of a harder plastics material, and a lower part (22) of a softer plastics material, the plastics being compatible or of the same composition, differing only in hardness. A groove (24) engages with a support plate (14), the groove being formed in the softer material abutting the harder material so that the latter forms one face of the groove. A perforated support sleeve (29) can be inserted by dropping into the filter, and an end cap (12) at the other end of the filter either closes the end or is adapted for connection to a further similar filter.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: September 24, 2013
    Assignee: Madison Filter 981 Limited
    Inventor: Niels Fischer
  • Patent number: 8540805
    Abstract: In one aspect, a method for assembling a filtration system is provided. The method includes providing a filter including a retainer formed therewith. The method also includes coupling a gasket about the retainer such that the gasket circumscribes the retainer, such that the gasket is integrally formed with a clamp and such that the clamp is coupled to the retainer in a friction fit.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: September 24, 2013
    Assignee: General Electric Company
    Inventor: Etienne René Pascal Jarrier
  • Patent number: 8529669
    Abstract: The present invention relates to a method and device for the purpose of filtering particulate laden air exiting a rooftop from a commercial kitchen or other high particulate laden air exhaust. By positioning a filter at a distance from the air exhaust exit in such a manner that the air flow is reflected off the filter a substantial portion of the particulate matter is filtered out of the air without substantially obstructing the flow from the exhaust preventing problems that might be caused from creating back flow in an exhaust system.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: September 10, 2013
    Inventor: Alan Warren Gaddy
  • Patent number: 8425671
    Abstract: Certain embodiments of the invention may include systems, methods, and apparatus for mounting filters. According to an example embodiment of the invention, a method is provided for mounting one or more filters in a housing with a tubesheet, an intermediate support, and a directional mount. The method can include providing a filter with a first filter section, manipulating the first filter section with respect to the intermediate support, and manipulating the first filter second end with respect to the intermediate support, where the first filter second end maintains its relative position with respect to the intermediate support, and the intermediate support is operable to engage with a second end of the directional mount.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: April 23, 2013
    Assignee: General Electric Company
    Inventors: Richard Mann, Abhijeet Kulkarni, Peter McGuigan
  • Publication number: 20130014342
    Abstract: This invention relates to hovering vacuum cleaners and components therefor. Specifically improvements to the filtering system and air handling capabilities of the vacuum cleaner are disclosed.
    Type: Application
    Filed: December 16, 2010
    Publication date: January 17, 2013
    Inventor: Jeremy Greer
  • Patent number: 8337582
    Abstract: A compressed air filter adapter for connecting a filter element (12) to a filter connection housing (13) includes a flow duct (21) enclosed by a wall (20) for compressed air, the flow duct (21) at a first end being delimited by a first opening (14), having an inner contour (142) defined by a first edge (141) and an outer contour (143), and at a second end by a second opening (15), having an inner contour (152) defined by a second edge (151) and an outer contour (153). The first opening (14) is provided for connection to a filter connection housing (13) and forms an opening cross-section (16), defined by the inner contour (142) of the first opening (14). The second opening (15) defines an opening on the filter side and forms a second opening cross-section (17), defined by the inner contour (152) of the second opening (15).
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: December 25, 2012
    Assignee: Kaeser Kompressoren AG
    Inventors: Michael Feisthauer, Norbert Fischer, Gerhard Leidner, Norbert Bär
  • Publication number: 20120311984
    Abstract: A exhaust gas purification device is structured such that it is possible to improve an assembling work ability or a maintenance work ability of gas purifying bodies or exhaust gas purifying cases. In an exhaust gas purification device provided with gas purifying bodies which purify an exhaust gas discharged by an engine, and a gas purifying housing which is provided with the gas purifying bodies therein, the exhaust gas purification device is structured such that a support bracket which supports the gas purifying housing is provided, a bolt hole is formed in the support bracket, an insertion guide is formed in the support bracket, and an attaching bolt is engaged with and disengaged from the bolt hole via the insertion guide.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 13, 2012
    Inventor: Masataka Mitsuda
  • Patent number: 8211219
    Abstract: A filter, in particular for compressed gas systems, includes a filter top part having at least one inlet channel and at least one outlet channel and a filter bottom part having a filter element, wherein the filter top part has a pressure-resistant housing and an insert which is suited in an optimal manner to the course of the inlet and outlet channels.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: July 3, 2012
    Assignee: Donaldson Filtration Deutschland GmbH
    Inventors: Hans-Michael Schuster, Jens Schäfer, Abdelkhalic Rbayti, Peter Groth
  • Publication number: 20120159913
    Abstract: The present concept a filter lock and seal system for sealing a filter assembly to a tubesheet includes a filter assembly which includes filter media mounted between top and bottom end caps. The top end cap includes an annular seat portion extending longitudinally from the top of a lower flange and terminating at an annular radial outward projecting shoulder. The filter assembly further includes a snap band for sealing the filter assembly to the tubesheet and cooperatively seating against the annular seat portion. Wherein the snap band including a cavity and a deformable portion for engaging with a tubesheet end.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 28, 2012
    Inventors: Barry LaCroix, Paul LaCroix
  • Patent number: 8192533
    Abstract: A device for securing an emission control element by a gastight seal within an exhaust system, and a device to secure loose hardware within an exhaust system. The device for securing the emission control element includes a structure that surrounds the emission control element and a structure that pushes against the emission control element. The structure that pushes against the emission control element uses a system of angled grooves and pushing means to create a force that holds the emission control element in place. The device to secure loose hardware includes a length of wire, the end of which is formed into a loop around the body of the hardware.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: June 5, 2012
    Assignee: G.T.E. Industries, Inc.
    Inventors: Randy Kinney, Alan Moyer, Aaron Huff
  • Publication number: 20120047859
    Abstract: A filter clip for holding a filter media over a supply/return/exhaust of an HVAC system includes a hook portion that secures to a grid of a suspended ceiling system and a filter holding portion that is connected to the hook portion such that the filter holding portion is biased towards the grid and/or a grille. An air filter placed between the filter holding portion and the grid and/or grille is held against the grid and/or grill until, for example, until construction is complete or the filter needs to be changed or removed, thereby covering the supply/return and reducing contamination of the HVAC system from construction dirt/debris.
    Type: Application
    Filed: August 22, 2011
    Publication date: March 1, 2012
    Inventor: Ray Cordell
  • Patent number: 8097154
    Abstract: To be able to insert a cylindrical filter element (10) which is joined at each end to an end disk (14) quickly into a housing element (40) in a filter unit (100) and connect it firmly, a screw connection having conical threads (16, 46) on the filter element (10) and on the bottom of the housing (41) is provided.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: January 17, 2012
    Assignee: Mann+Hummel GmbH
    Inventors: Klemens Dworatzek, Ralf Bauder, Steffen Ackermann
  • Patent number: 8029585
    Abstract: A pocket filter assembly includes a frame structure having a plurality of filter pocket openings and a corresponding plurality of filter pockets, each filter pocket having a pocket mouth securely sealed in a corresponding filter pocket opening. The frame structure includes an outer subframe and a corresponding inner subframe connected and locked to each other by means of locking elements at locking positions distributed along opening portions of the subframes defining the filter pocket openings. At each locking position, the filter pocket mouths are sealed clamped and sealed between co-operating opening portions of the subframes. The locking elements include an undercut hook-shaped projection on the inner subframe and a co-operating receiving hole on the outer subframe, such that an interlock of the subframes to each other is obtained, while including filter pocket mouth material of the associated filter pocket between said projection and said aperture such that said interlock is sealed thereby.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: October 4, 2011
    Assignee: Camfil AB
    Inventors: Anders Sundvik, Kjell-Åke Enbom Ernst
  • Publication number: 20110138762
    Abstract: An object is to provide a vent filter in which a vent film is less likely to be broken when cut and a measure to shrinkage is taken while the characteristics and functions both inherent to the vent film are being kept. The vent filter includes a frame-shaped adhesive layer 2 and a vent film 3 attached to the adhesive layer 2, wherein an outer peripheral portion of the vent film 3 is positioned at an outer side than an outer peripheral portion of the frame-shaped adhesive layer 2.
    Type: Application
    Filed: June 19, 2009
    Publication date: June 16, 2011
    Inventors: Takuya Ueki, Takayuki Saeki, Shuichi Sayama
  • Patent number: 7909903
    Abstract: Disclosed herein is an air filter device, installed on a line of a pneumatic circuit to remove harmful impurities. The device (10) includes a main body (20) having a casing shape, a cylindrical filter cartridge (30), and a cap (40). The main body includes air inlet and outlet ports (22, 24) on opposite sides thereof. A guide ring (26) is provided adjacent to an inner wall (20a) to have a predetermined height, with a hole (28) formed in the guide ring to directly communicate with the air outlet port. The filter cartridge is accommodated in an inner space (S3) of the guide ring (26), with a filter material (34) horizontally disposed in the filter cartridge. The cap is fastened to an opening of the main body, and includes a spacer (44) which compresses the upper end of the filter cartridge.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 22, 2011
    Inventor: Ho-Young Cho
  • Patent number: 7811350
    Abstract: A sheet-like filter element is installed on a support within the casing of a filter device. A plate-like portion is integrally formed in at least the outer periphery of the filter element. A crimped portion which is to be secured to the support in a crimped state is formed in this plate-like portion. A protrusion which rises through the above described plate-like portion is formed so as to be integrated with the above described support around this crimped portion. The plate-like portion is secured to the support by means of this protrusion.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: October 12, 2010
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Ryu Hirata, Kouichi Oda
  • Patent number: 7708795
    Abstract: The present invention relates to an air filter unit (1) having the shape of a tube comprising a top plate (6), having an air inlet (7) leading into the interior of the tube, whereby the top plate (6) includes fasteners (13) for removably attaching said air filter unit to a wall (2) so that the air inlet of the top plate is concentrically disposed in relation to an opening in said wall, and a sealing ring (14,15) of a resilient material surrounding the air inlet in the top plate. According to the present invention, the top plate (6) includes at least one protrusion (16) on the side thereof facing said wall (2) in use, the height of said protrusion (16) being less than the distance with which the sealing ring (14,15), when not subjected to load, projects out from the surface of the top plate.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: May 4, 2010
    Assignee: Camfil AB
    Inventor: Lars Westlund
  • Patent number: 7699912
    Abstract: The air-cleaner includes a housing. The air-cleaner includes a filter element located in the housing to filter air taken into the housing. The air-cleaner includes an adsorption element for adsorbing vaporized fuel flowing into the housing. The housing includes first and second housing components having open ends put on each other. The filter element is held between the first and second housing components, separating the housing into a clean side and a dust side. The adsorption element includes a frame at the periphery; and an adsorption portion located inside the frame. One of the first and second housing components as the clean side has an inner side back in the open end, the inner side having a mounting portion having the adsorption element mounted thereto. The mounting portion includes the adsorption element; and a support member placed thereon.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: April 20, 2010
    Assignee: Toyo Roki Seizo Kabushiki Kaisha
    Inventors: Soichi Uemura, Wataru Sugimoto, Osamu Kaneko, Tetsuo Akiyama, Atsushi Suzuki
  • Publication number: 20100058723
    Abstract: A compressed air filter adapter is provided for connecting a filter element (12) to a filter connection housing (13). The adapter (11) has a flow duct (21) enclosed by a wall (20) for compressed air, the flow duct (21) at a first end being delimited by a first opening (14), having an inner contour (142) defined by a first edge (141) and an outer contour (143), and at a second end by a second opening (15), having an inner contour (152) defined by a second edge (151) and an outer contour (153). The first opening (14) is provided for connection to a filter connection housing (13) and forms an opening cross-section (16), defined by the inner contour (142) of the first opening (14). The second opening (15) defines an opening on the filter side and forms a second opening cross-section (17), defined by the inner contour (152) of the second opening (15).
    Type: Application
    Filed: February 29, 2008
    Publication date: March 11, 2010
    Applicant: KAESER KOMPRESSOREN GMBH
    Inventors: Michael Feisthauer, Norbert Fischer, Gerhard Leidner
  • Patent number: 7670398
    Abstract: A filter element (10) is disclosed having a integral clamp (100) thereon. The adjustable clamp (100) is held against a sleeve (90) by attached tabs (91). The sleeve (90) covers a collar (70) with a plurality of fingers (72) thereon. A high head, e.g., the apex, formed by a bead (80) in the fingers (72) permits better sealing between the filter (10) and the filter's support housing.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: March 2, 2010
    Assignee: TDC Filter Manufacturing, Inc.
    Inventor: Daniel Modesto
  • Publication number: 20090301305
    Abstract: The present invention relates to a method and device for the purpose of filtering particulate laden air exiting a rooftop from a commercial kitchen or other high particulate laden air exhaust. By positioning a filter at a distance from the air exhaust exit in such a manner that the air flow is reflected off the filter a substantial portion of the particulate matter is filtered out of the air without substantially obstructing the flow from the exhaust preventing problems that might be caused from creating back flow in an exhaust system.
    Type: Application
    Filed: January 26, 2009
    Publication date: December 10, 2009
    Inventor: Alan Warren Gaddy
  • Publication number: 20090229231
    Abstract: The invention relates to an aircraft filter device comprising a hydraulic block (1) adapted to receive a removable filter (2) comprising a vessel (3) that receives a cartridge (4). In accordance with the invention, an insert (21) is screwed tightly into an internal thread (20) of the hydraulic block, the insert itself having an internal thread (22) into which the vessel is screwed, the device also including rotation-preventing means (23, 32) for preventing the vessel from moving in rotation once it has been screwed into the insert.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 17, 2009
    Applicant: MESSIER-BUGATTI
    Inventor: Alain TREYZ
  • Patent number: 7575617
    Abstract: A grill and filter assembly having a replaceable filter element includes a rectangular frame assembly, grill insert and a filter. The rectangular frame assembly has an outer frame forming a face and an outwardly extending wall extension. The grill insert has a plurality of louvers and an outwardly extending filter housing. It also includes a plurality of flanges extending inwardly from the filter housing to a depth of no greater than the thickness of standard drywall. The filter assembly includes a loop covered with a fabric filter material. The loop is capable of flexure and the filter is inserted within the filter housing and under the flanges. A plurality of magnets are attached to the wall extension and located to magnetically hold the grill insert within the frame assembly. The flanges and filter housing are structurally adapted to allow the filter to be flexed and slid from under the flanges to remove it from the grill insert.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: August 18, 2009
    Inventor: Gary D. Ferguson
  • Patent number: 7531017
    Abstract: A biohazard safety enclosure or workstation particularly adapted for enclosing automated instrumentation includes a chamber defined by front, back, top, bottom, and opposed end walls; a HEPA filter across an air inlet opening into the chamber, and an airflow means to direct air horizontally through at least part of the chamber between the end walls. Preferably, the workstation has a second HEPA filter across an air outlet opening in the work chamber, with the airflow means including a conduit extending from the air outlet opening to the air inlet opening. A fan draws air through the conduit. All of the air can be exhausted from the workstation, or a part of the filtered air can be exhausted from the workstation and replenished through a make-up air inlet into the chamber.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: May 12, 2009
    Assignee: Flow Sciences, Inc.
    Inventors: Raymond F. Ryan, John H. McNally
  • Patent number: 7481863
    Abstract: An axial flow filter element having alternating flat and pleated layers of fluid permeable filter media which form channels with an open cross section, one end of a first group of channels and the other end of a second group of channels being tightly sealed such that fluid being filtered must pass through one of the filter layers to pass through the filter element, a peripheral seal for sealing the inflow side of the filter from the outflow side in a housing, and a support body arranged in the filter element surrounded by the channels and extending axially at least to one end face of the filter element; at least one end face of the filter element having a spacer for maintaining the end face at a distance from a supporting surface on which the filter element may be placed during handling to prevent direct contact between the end face and the supporting surface.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: January 27, 2009
    Assignee: Mann & Hummel GmbH
    Inventors: Reinhard Oelpke, Torsten Hotop
  • Patent number: 7444712
    Abstract: A vacuum cleaner has a vacuum cleaner housing and an exchangeable filter with through opening arranged in the housing. A holding arm connected with its upper end to the vacuum cleaner housing penetrates the through opening. A fastening member is detachably connected to the lower end of the holding arm for securing the filter to the holding arm. The lower end of the holding arm has a radial recess, and the fastening member has engagement elements engaging the radial recess when the filter is secured on the holding arm. The engagement elements block removal of the fastening member from the lower end of the holding arm. The fasting member has an actuating ring moveable between a locked position, in which the engagement elements secure the fastening member against removal from the holding arm, and a release position, in which the fastening member is removable from the holding arm.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: November 4, 2008
    Inventor: Thomas Wiedemann
  • Patent number: 7332012
    Abstract: A filtering apparatus having a filter retrieval apparatus, an integrated jib, and a clamping assembly for providing a seal between a filter and a cabinet.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: February 19, 2008
    Assignee: AAF-McQuay Inc.
    Inventors: Christopher J. O'Connor, James R. Kearney, Sr., Keiron P. O'Connell
  • Patent number: 7276100
    Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: October 2, 2007
    Assignee: Sunbeam Products, Inc.
    Inventors: Barry Huehn, Yani Deros, Stephen Bourque
  • Patent number: 7186284
    Abstract: A filter mounting system for use in a baghouse having a tubesheet with a plurality of openings. The filter mounting system includes filter media and a tubular mounting collar attached to the filter media to mount the filter media relative to the tubesheet. The filter mounting system also includes a gasket made of a flexible material. The gasket has a tubesheet receiving portion and a filter receiving portion extending from the tubesheet receiving portion. The mounting collar of the filter mounting system is adapted to be positioned within the filter receiving portion of the gasket and engaging the filter receiving portion to effect sealing engagement of the tubesheet receiving portion of the gasket against a portion of the tubesheet adjacent the opening. The filter receiving portion extends from the tubesheet receiving portion to force one portion of the gasket into sealing engagement with a surface of the tubesheet upon engagement with the mounting collar.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: March 6, 2007
    Assignee: BHA Group, Inc.
    Inventor: Jack Thomas Clements
  • Patent number: 7175030
    Abstract: A filter element for hydrocarbon emissions in, e.g., marine diesel engine applications, comprises a wound mat received within a filter bag. An annular end cap is bonded to one end of the wound mat, and is sealed around its periphery to a bag ring at the open end of the bag. The bag ring is then received and retained in a seat ring in the housing. The exhaust as stream from the engine is directed through an opening in the end cap and through the wound mat and bag for removal of hydrocarbons and contaminants.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: February 13, 2007
    Assignee: Parker-Hannifin Corporation
    Inventors: Ronald E. Fall, John Ruddock
  • Patent number: 7172693
    Abstract: A bracket system holds a filter(s) in quick-attach and quick-release fashion. Brackets are combined in modular fashion, with conduit between the brackets, to create a “bank” of filters easily changed in number, arrangement, and flow scheme. Top brackets and bottom brackets capture/support the top end and bottom end of a filter, respectively, and filter inlet and outlet ports preferably slide onto and off of cooperating tubes/ports in the bracket modules without tools or threaded connections. A retainer may pivot on and off of its respective filter, holding the filter in place and releasing the filter, respectively. After pivoting the retainer up from the filter, the filter may be lifted up off of its respective bottom module, so that the filter is substantially vertically and pivotally removable from the bracket system.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: February 6, 2007
    Inventor: Roger P. Reid
  • Patent number: 7166141
    Abstract: A vacuum cleaner is disclosed which comprises a body, fan means within the body for creating an airflow through the cleaner and a separation unit mounted to the body for separating dirt and dust from the airflow. The separation unit comprises a cyclone separator and a filter. The filter is removable from the separation unit when the separation unit is mounted to the body of the cleaner.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: January 23, 2007
    Inventors: Euan Skinner Macleod, Christopher Richard Henderson
  • Patent number: 7041147
    Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: May 9, 2006
    Assignee: JCS/THG, LLC
    Inventors: Barry Huehn, Yani Deros, Stephen Bourque
  • Patent number: 7014674
    Abstract: A biological safety cabinet includes a work chamber having a contaminated air discharge opening, a fan enclosure above the work chamber, a conduit extending from the chamber air outlet to the top of the fan enclosure, a first HEPA filter in the top of the fan enclosure, a second HEPA filter between the fan enclosure and the work chamber, and a fan within the fan enclosure to convey air through the conduit from and the first HEPA filter into the fan enclosure, and to discharge air under positive pressure from the fan enclosure through the exhaust port and through the second HEPA filter into the work chamber. Due to the construction of the cabinet, the fan can be repaired or replaced without the need to observe biohazard procedures.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: March 21, 2006
    Assignee: Flow Sciences, Inc.
    Inventors: Raymond F. Ryan, John H. McNally
  • Patent number: 6977006
    Abstract: Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required in order for the filter cartridge to be installed in the holder, so that mismatched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: December 20, 2005
    Inventor: Roger P. Reid
  • Patent number: 6974491
    Abstract: A cartridge locking device (10) for holding a filter media (14) in a plenum (12) in which an actuator (112) movable between a first position and a second position connects to a lever member (122) inwardly of the plenum (12) that moves between a position bearing on the filter media (14) to a spaced-apart position for replacing the filter media (14), the locking device (10) operable from the holding position to the spaced-apart position without opening the plenum (12), thereby reducing the time for the plenum (12) to be open during replacement operations. A method of locking and releasing a filter (14) for filter (14) change out is disclosed.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: December 13, 2005
    Inventor: Stephen P. Kendall
  • Patent number: 6942710
    Abstract: The present invention is an improved duct end filtering device which increases the efficiency of a duct-end filter and which increases the ease with which filters can be removed and replaced.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: September 13, 2005
    Inventor: Albert M. Milano
  • Patent number: 6896712
    Abstract: A biohazard safety enclosure or workstation particularly adapted for enclosing automated instrumentation includes a chamber defined by front, back, top, bottom, and opposed end walls; a HEPA filter across an air inlet opening into the chamber, and an airflow means to direct air horizontally through at least part of the chamber between the end walls. Preferably, the workstation has a second HEPA filter across an air outlet opening in the work chamber, with the airflow means including a conduit extending from the air outlet opening to the air inlet opening. A fan draws air through the conduit. A part of the filtered air is exhausted from the workstation and is replenished through a make-up air inlet into the chamber.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: May 24, 2005
    Assignee: Flow Sciences, Inc.
    Inventors: Raymond F. Ryan, John H. McNally
  • Patent number: 6866695
    Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: March 15, 2005
    Assignee: The Holmes Group, Inc.
    Inventors: Barry Huehn, Yani Deros, Stephen Bourque
  • Patent number: 6858052
    Abstract: A filter cartridge for use in a baghouse having a tubesheet with a plurality of opening. A flexible snapband is biased towards engagement with a surface defining one of the openings in the tubesheet and is adapted to receive a portion of the filter cartridge. The snapband has a first surface and a second surface with a pair of protrusions separated by a groove adapted to receive a peripheral edge of one of the tubesheet opening. The pair of protrusions sealingly engage surfaces of the tubesheet. The filter cartridge includes filter media. Structure supports the filter media. A rigid non-metallic tubular collar is integrally formed with the filter media and the structure to secure this filter media and the structure to said collar. The collar includes a pair of longitudinally spaced continuous projections extending radially from the collar.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: February 22, 2005
    Assignee: BHA Group, Inc.
    Inventor: Jack Thomas Clements
  • Patent number: 6843821
    Abstract: The aim of the invention is to provide filtering candles (1) comprising a sintered filtering tube (2) and a collar (3) which is connected thereto, and having an increased shelf life and improved resistance values. To this end, the collar (3) comprises an annular collar wall (4) which oriented towards the filtering tube (2) from the neck. Said wall comprises at least one recess (8) which is arranged in a perpendicular manner and at an angle in relation to a plane which is perpendicular to the axis of the filtering tube.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: January 18, 2005
    Assignee: GKN Sinter Metals GmbH
    Inventor: Simon Steigert
  • Patent number: 6797028
    Abstract: There is provided in a standard ceiling system, having suspension rails or elements a movable air delivery diffuser resting on the suspension elements and a filter panel inserted into and retained between the suspension elements and the air delivery diffuser. The filter panel has a filter frame and an attached filter designed to be inserted into and retained on the suspension elements of the suspension ceiling. The filter frame has an inner face and an outer face with a filter media retained in the filter frame. The outer edges of the filter media are located and retained adjacent the filter frame inner face. The filter frame outer face has a flexible perimeter flange projecting outwardly from an uppermost portion of the filter frame outer face. This flexible perimeter flange can bend inwardly so as to be substantially flush with said frame outer face and can then flex back outward to engage the suspension elements.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: September 28, 2004
    Assignee: 3M Innovative Properties Company
    Inventor: Dean R. Duffy
  • Patent number: 6797025
    Abstract: A liquid reservoir tank assembly includes a gas-liquid separator, such as an air-oil separator. A tank body has an open end, a portion of the tank body forming a liquid separation chamber, another portion of the tank body forming a liquid reservoir. A tank cover covers the open end of the tank body, the tank body and the tank cover providing a gas inlet and a gas outlet with a gas flow through the separation chamber from the gas inlet to the gas outlet. The gas-liquid separator is mounted in the separation chamber in the gas flow between the gas inlet and the gas outlet. The separator has a coalescing stage layer and a drain stage layer arranged radially symmetrically about an axis extending through the interior of the separator, the coalescing stage layer being upstream of the drain stage layer. Each of the layers is generally frustoconical in shape.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: September 28, 2004
    Assignee: Donaldson Company, Inc.
    Inventors: Staffan B. Linnersten, Christopher D. Radcliff, Brian Read, Wijadi Jodi