Variation In Shape Or Size Patents (Class 55/488)
  • Patent number: 11439943
    Abstract: Filter media having a design embossed into the media are described. In some arrangements, the filter media is pleated filter media. In other arrangements, the filter media includes a plurality of channels, such as tetrahedron channels. The filter media includes a pattern of interrupted straight or angled embossments that help maintain separation between adjacent layers of the filter media. The embossments allow for two adjacent media layers (e.g., mating surfaces of the filter media) to remain separated, thereby increasing dust holding capacity and lowering pressure drop over similarly configured filter media not having the embossments.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: September 13, 2022
    Assignee: CUMMINS FILTRATION IP, INC.
    Inventors: Emmanuel Page, Anthony Barreteau, Kurt M. A. Badeau, Christopher E. Holm
  • Patent number: 11260331
    Abstract: A filter cartridge configured to be removably positionable within an inner opening of a housing, wherein the filter cartridge includes a media pack having an inlet end, an outlet end, and an outer surface having an outer peripheral shape, at least one of: (a) a frame member at least partially surrounding the media pack, the frame member including a frame wall having a shape that is different from the outer perimeter shape of the media pack; and (b) a shell at least partially surrounding the media pack, the shell including a shell wall having a shape that is different from the outer perimeter shape of the media pack, and a sealing member extending at least partially around the inlet end of the media pack, wherein the sealing member connects the media pack to at least one of the frame member and the shell.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: March 1, 2022
    Assignee: Donaldson Company, Inc.
    Inventors: David J. Burton, Hubert J. Rahn
  • Patent number: 10946322
    Abstract: A filter element includes a media pack and a gasket member. The gasket member includes first and second gasket regions separated by a channel. The elements are usable in a dust collector having a dirty air inlet, a clean air outlet, and a tube sheet dividing between an unfiltered and a clean air volume. An element is removably mounted and sealed within the tube sheet. At least one projection angled relative to a plane of the tube sheet extends into the channel of the gasket member. A method of servicing a dust collector includes removing a first filter element from the tube sheet in the housing, and then sealing a second filter element against the tube sheet by orienting at least one projection extending from a plane of the tube sheet into a channel defined by a gasket member secured to the second filter element. An axial force is exerted to form a seal between the gasket member and the tube sheet.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: March 16, 2021
    Assignee: Donaldson Company, Inc.
    Inventors: Thomas D. Raether, Brian Zauner, Jim C. Rothman
  • Patent number: 10940415
    Abstract: An electret is disclosed including: a carrier, and polytetrafluoroethylene having a melting point of 35° C. or higher and 320° C. or lower deposited on the carrier, wherein the electret imparts an electrostatic charge to at least one of the carrier and the polytetrafluoroethylene, and has two or more melting point peaks in simultaneous thermogravimetry and differential thermal analysis. An electret filter is disclosed which preferably is used for a filter which requires durability to tobacco smoke. An electret filter is also disclosed having a fluorine-containing component deposited on a fiber surface, wherein an initial QF value is 0.5 mmAq?1 or more in collection efficiency of particles having a particle diameter of 0.3 to 0.5 ?m at a wind speed of 5 cm/s, and a filter deterioration rate by tobacco smoke loading is ?8/(g/m2) or more.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: March 9, 2021
    Assignee: TOYOBO CO., LTD.
    Inventor: Yoshiyuki Kitagawa
  • Patent number: 10888018
    Abstract: A cooling system for electrical and electronic devices for hot swapping of a fan module without affecting cooling efficiency due to air backflow, preventing stalling of newly installed exhaust device due to reverse rotation. A check valve assembly having an inlet side frame member, an outlet side frame member, and one or more non-symmetrical valve flaps, each flap having a movable part and a fixed part. The outlet side frame allows the flaps to open under suction pressure on side of the outlet side frame, the inlet side frame disallows the flaps to open under suction pressure on side of the inlet side frame, allowing air to flow in one direction from inlet side frame side to outlet side frame side only. The check valve assembly can be independent of the exhaust device. The check valve assembly can prevent backflow of air during hot swapping of the exhaust device.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 5, 2021
    Assignee: Fortinet, Inc.
    Inventors: Qian Yu, Chenghua Hong, Keqin Chen
  • Patent number: 10661209
    Abstract: The present disclosure relates to filtration media packs, filter elements, and methods for manufacturing filtration media packs and filter elements.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 26, 2020
    Assignee: Donaldson Company, Inc.
    Inventor: Paul A. Way
  • Patent number: 9981215
    Abstract: A filter element includes a media pack of Z-media having first and second opposite flow faces and a side wall extending between the first and second flow face. A gasket is secured to the side wall. The gasket has a sealing portion and an attachment portion. The sealing portion has a flat surface at least one inch long and is located between being planar with and 0.5 inches recessed from the first flow face, inclusive. The filter element can be used in a dust collector.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: May 29, 2018
    Assignee: Donaldson Company, Inc.
    Inventor: Thomas D. Raether
  • Patent number: 9827527
    Abstract: A method of reinforcing a filter media pack as well as a reinforced media pack is provided. The method includes forming a media pack to have an inlet face and an outlet face. The method includes applying a reinforcing agent to the media pack. The reinforcing agent is applied in a flowable state. The method also includes hardening the reinforcing agent to form a reinforcing structure to reinforce the media pack. Filter element having such a reinforcing structure is also provided.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: November 28, 2017
    Assignee: Baldwin Filters, Inc.
    Inventors: Steven J. Merritt, Timothy L. Krull
  • Patent number: 9440178
    Abstract: A filter element includes a center tube and a blank of a filter media. The center tube has a first end and a second end. The blank is folded into a plurality of triangles. Each triangle is disposed adjacent to another of the plurality of triangles to form a series of triangular pleats to form a pleated filter media. The pleated filter media is disposed about the center tube. A cross sectional area of the pleated filter media proximal to each of the first end and the second end is greater than a cross sectional area of the pleated filter media at a point between the first end and the second end.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: September 13, 2016
    Assignee: Caterpillar Inc.
    Inventor: Bryant Morris
  • Patent number: 9180392
    Abstract: A nonwoven fabric includes mixed fibers having different fiber diameters. A group of fibers having a fiber diameter of 5.0 ?m or less (fiber group A) is present at a volume fraction of 20 to 80 vol %, a group of fibers having a fiber diameter of 50.0 ?m or more (fiber group B) is present at a volume fraction of 1 to 40 vol %, and a group of fibers having a fiber diameter of more than 5.0 ?m and less than 50.0 ?m (fiber group C) is present at a volume fraction of 0 to 79 vol %. The ratio of the median fiber diameter (B?) of fiber group B to the median fiber diameter (A?) of fiber group A (B?/A?) is 35 or more.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: November 10, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Yuji Iyama, Akito Kuroda, Yoshikazu Yakake
  • Patent number: 9046309
    Abstract: A membrane cartridge is manufactured by repeatedly folding and joining two strips of membrane to form a cross-pleated cartridge with a stack of openings or fluid passageways configured in an alternating cross-flow arrangement. The cartridge can be modified for other flow configurations including co-flow and counter-flow arrangements. Methods for manufacturing such cross-pleated membrane cartridges, as well as apparatus used in the manufacturing process are described. Cross-pleated membrane cartridges comprising water-permeable membranes can be used in a variety of applications, including in heat and water vapor exchangers. In particular they can be incorporated into energy recovery ventilators (ERVs) for exchanging heat and water vapor between air streams being directed into and out of buildings.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: June 2, 2015
    Assignee: DPoint Technologies Inc.
    Inventors: Greg Montie, James Franklin Dean, Curtis Mullen, Robert Hill
  • Publication number: 20150107771
    Abstract: A trap apparatus includes: a first cylindrical member including a space; a second cylindrical member removably disposed in the space and including side opening which allows a gas stream to flow in therethrough, and a downstream side opening which allows the gas stream flowing in from the upstream side opening to flow out therethrough; a downstream side trap member which is disposed inside the second cylindrical member to block the downstream side opening; and an upstream side trap member which is disposed between the downstream side trap member and the upstream side opening of the second cylindrical member and includes a concave portion recessed in a direction approaching the downstream side trap member.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Applicants: TOHOKU SEIMITSU CO., LTD., TOKYO ELECTRON LIMITED
    Inventors: Atsushi KOBAYASHI, Shinji AKIYAMA, Shuuichi ANDOU, Katsuhiro KOSUGA, Takahiro YAMAMOTO
  • Publication number: 20150089910
    Abstract: An air filter for a combustion engine for off-load motorcycles is made from a porous foam material. The air filter has contiguous side surface forming a cavity with at least two openings where the side surface contains at least one filter layer, a bottom surface closing at least one of the two openings where the bottom surface contains at least one filter layer, where the side surface has more air resistant than the bottom surface. The side surface has more air resistant than said bottom surface by arranging any combination of thickness of the surfaces, number of layers, and porosity ratio of the layers.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 2, 2015
    Inventor: AKIRA SASAKI
  • Patent number: 8979965
    Abstract: An air filter attachment apparatus for temporarily attaching a furnace-type air filter to a face of a box fan with a ferromagnetic box frame. The attachment apparatus comprises a plurality of magnetic flaps secured to respective top and side edges of the air filter, either directly or via a filter-receiving frame. The filter/frame is sized to approximate the face dimensions of the fan, and the flaps are foldable forwardly toward the fan to lie flat on top and side surface of the fan's metal box frame. Each flap includes magnetic attachment means to secure the flap to the fan.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: March 17, 2015
    Inventor: Mehran Minaeeghainipour
  • Patent number: 8950587
    Abstract: Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. In some embodiments, at least one layer of the filter media comprises synthetic polymer fibers. Certain filter media described herein may have desirable properties including high dirt holding capacity and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: February 10, 2015
    Assignee: Hollingsworth & Vose Company
    Inventors: Cameron Thomson, Milind Godsay, Randall Keisler
  • Patent number: 8936661
    Abstract: Multi-stage filtration apparatus is provided. A fluid is forced through different filter stage elements allowing for removal of various contaminants from the fluid.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: January 20, 2015
    Assignee: PECOFacet (US), Inc.
    Inventors: David J. Burns, Daniel M. Cloud, Artimus Charles Jones, Tyler Glenn Boswell
  • Patent number: 8932380
    Abstract: A dust removal device is provided which reduces the differences, among different dusty environments, in time at which dust collection is started until the time when possible clogging may occur to significantly increase the time from the start of dust collection until the time when possible clogging occur, while improving dust removal performance. The dust removal device includes main filter 10 that is formed of non-woven cloth 8 with charged fiber, duct 6-1 with main filter 10 disposed therein, sub-filter 11 including a plurality of cylindrical air trunks formed of a charged member, and duct 6-2 with sub-filter 11 disposed therein. Duct 6-1 and duct 6-2 are in communication with each other. In operation, air flows from duct 6-1 to duct 6-2. Main filter 10 in duct 6-1 has a larger vent cross-sectional area than sub-filter 11 in duct 6-2.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: January 13, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Takayuki Okada
  • Publication number: 20140331627
    Abstract: A filter element has a filter body of at least one layer of a flat web-shaped filter medium, separating a raw side from a clean side of the filter element. A hot melt system is provided and the filter body is glued together by the hot melt system. The hot melt system has a hot melt mixture that is made up of 15-85% by weight of a first hot melt that is polyester-based and 15-85% by weight of a second hot melt that is polyamide-based. The first hot melt and the second hot melt together amount to 100% by weight of the hot melt mixture. The hot melt mixture constitutes a proportion of more than 75% by weight of the hot melt system. The remainder of the hot melt system is made up of fillers, pigments, tackiness-imparting resins, and hot melts based on a polycondensate.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Inventors: Tanja Majer, Gerhard Vilsmaier
  • Publication number: 20140260139
    Abstract: A fluted filter cartridge is provided. The fluted filter cartridge includes filter media including an inlet flow face and an outlet flow face. The inlet flow face and the outlet flow face are generally parallel. The filter cartridge includes a frame defining a central opening. The filter media is coupled to the frame such that fluid to be filtered may be directed through the central opening to the inlet flow face of the filter media. The frame includes a top surface. The inlet flow face of the filter media is located below the top surface of the frame.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: BALDWIN FILTERS, INC.
    Inventors: Steven J. Merritt, Michael Von Seggern
  • Patent number: 8828115
    Abstract: An air filter element is provided with an anti-crown support grid on a clean side of the filter media. The support grid includes one or more elongated mounting members provided along periphery portions of the grid and at least one support rib spanning between and secured at opposing ends to the mounting members. The mounting members are embedded within a peripheral seal frame. The support grid may include at least one alignment feature sized, configured and positioned to be receivable into a complimentary feature of a housing so as to positionally lock the filter element and the housing.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: September 9, 2014
    Assignee: Mann & Hummel GmbH
    Inventors: Grant Gillispie, Alexander Braithwaite, Michael Desjardins
  • Patent number: 8821607
    Abstract: A particle capture unit adopted to be exposed to a space in which particles fly includes at least a first layer formed of a plurality of first fiber-like materials and a second layer formed of a plurality of second fiber-like materials. The first fiber-like materials are thinner than the second fiber-like materials and arrangement density of the first fiber-like materials in the first layer is higher than that of the second fiber-like materials in the second layer, the second layer is interposed between the first layer and the space, and the first and second layers are hardened and bonded together by sintering.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 2, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Syunsuke Toyoizumi, Katsuyuki Takahiro
  • Patent number: 8641901
    Abstract: A filter element is disclosed. The filter element includes a filter casing defining an inner radial surface, a filter body disposed within the casing, the filter body having an axial, dirty side surface and an axial, clean side surface, wherein the filter body includes fluted filter media having one or more flutes that extend from the dirty side surface to the clean side surface and a pre-filter including an axial, dirty side surface and an axial, clean side surface, the pre-filter arranged within the casing so that the dirty side surface of the pre-filter is proximate the clean side surface of the filter body, wherein the filter body and the pre-filter are fixably retained by the inner radial surface of the casing.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: February 4, 2014
    Assignee: Wix Filtration Corp LLC
    Inventors: Jason W. Reid, Jason LaMarr Tate
  • Publication number: 20140026527
    Abstract: An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes strips of media comprising corrugated sheets secured to facing sheets and forming inlet and outlet flutes secured to one. A preferred projection/receiver arrangement is described. Methods of assembly and use are also provided.
    Type: Application
    Filed: January 18, 2013
    Publication date: January 30, 2014
    Applicant: Donaldson Company Inc.
    Inventors: Boehrs Allen Bruce, Paul Anthony Wendt
  • Publication number: 20130305671
    Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 21, 2013
    Applicant: JOHNS MANVILLE
    Inventors: Christian Hassmann, Joerg Lehnert, Hans-Juergen Meitinger
  • Patent number: 8523972
    Abstract: An air filtration system including a pre-filtration unit having a filter section and a spacer section attached to the filter section and extending downstream from the filter section, a pre-filter attachment device having a pre-filter securing section and a first plurality of coupling members, and a filtration unit. The filter section includes a pre-filter. The spacer section includes an at least partially open end located on a downstream side of the spacer section to expose a downstream face of the pre-filter. The filtration unit includes a filter frame, an upper section thereof including an upstream-facing surface having a plurality of openings, a filter secured inside the lower section of filter frame, and a second plurality of coupling members located on the filter frame and coupleable with the first plurality of coupling members of the pre-filter attachment device to removeably secure the pre-filtration unit to the filtration unit.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: September 3, 2013
    Assignee: FAIS Inc.
    Inventors: Pieter K. Borkent, Cory Roehm
  • Publication number: 20130152530
    Abstract: A filtering device features a ceramic filter body for filtering a fluid flow, the filter body consisting of a wavy layer and a flat layer and the wavy and flat layer being wound in a spiral-shaped manner. The wave length of the waves increases from the inside to the outside with increasing distance to the longitudinal axis of the filter body such that the wave troughs and the wave peaks of at least two radially adjacent windings each lie on a common radial plane.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 20, 2013
    Applicant: MANN+HUMMEL GMBH
    Inventor: Mann+Hummel GMBH
  • Patent number: 8356659
    Abstract: An air conditioner is disposed with a casing, a filter, an indoor heat exchanger, a blower, and a blowout passage. The casing includes a suction opening and a blowout opening. The filter is disposed downstream of the suction opening and transmits air. The indoor heat exchanger is disposed facing the filter downstream of the filter and performs heat exchange with air that passes through the indoor heat exchanger. The blower is disposed downstream of the indoor heat exchanger and generates a flow of air that is sucked in from the suction opening and is blown out from the blowout opening. The blowout passage includes an air introduction opening disposed facing and downstream of the indoor heat exchanger and guides air from the air introduction opening to the blowout opening. Additionally, the filter has an outer shape that is slanted with respect to the indoor heat exchanger.
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: January 22, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Zhiming Zheng, Hiroshi Ohmae, Toshihiro Kizawa
  • Patent number: 8323384
    Abstract: An extended life filter element is provided that may at least double the service interval of a given filtration application utilizing the same or similar filter housing envelope provided. The filter element may include a more open pleated substrate with an efficiency layer and a prefilter on the upstream surface. The filter may be a foam sleeve. One exemplary application is for air filtration of air flow to electrical cabinets on locomotives.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: December 4, 2012
    Assignee: Clark Filter, Inc.
    Inventors: Ian Joseph Derstler, Richard Kurcina
  • Publication number: 20120279186
    Abstract: A compact filter has a compact filter element for exchangeable use in a filter housing and the compact filter element has a filter body of a web-shaped filter medium. The web-shaped filter medium has at least one flat filter medium web and one corrugated filter medium web that are placed onto each other and at least partially connected to each other by ultrasonic welding. At least one of the flat and corrugated filter medium webs is a composite filter medium web of at least two components, wherein at least one component is a synthetic material and one component is a non-synthetic material. The non-synthetic material is a plant-derived material and forms a support of the composite filter medium web and the synthetic material is a synthetic layer applied on the support.
    Type: Application
    Filed: June 13, 2012
    Publication date: November 8, 2012
    Applicant: MANN+HUMMEL GMBH
    Inventors: Michael HEIM, Thomas SIEBER, Josef ROHRMEIER, Klaus GEHWOLF, Joachim-Paul KRIEGER, Sven EPLI, Tanja MAJER, Andrés MORENO LINARES, Jobst EISENGRAEBER-PABST
  • Publication number: 20120260616
    Abstract: A replaceable filter module is configured to be flanged to a wall of a housing that holds a fuel cell. The filter module includes a filter element with a filter medium and at least one of a seal and sealing elements. The seal includes one of a key-and-lock connection, a plug-and-socket connection, and a tongue-and-groove connection.
    Type: Application
    Filed: April 18, 2012
    Publication date: October 18, 2012
    Applicant: CARL FREUDENBERG KG
    Inventors: Klaus Leister, Hannes Clasen, Thomas Fischer
  • Patent number: 8262759
    Abstract: A filter device for filtration of gaseous fluids has a filter housing provided with a receptacle. A first filter element and a second filter element are arranged in the receptacle of the filter housing behind one another in an axial direction of the filter housing. A first bypass that bypasses the first filter element is provided. An inflow side of the second filter element is arranged axially behind the first filter element and is fluidically connected to the first bypass. Fluid to be filtered passes in a flow direction of the fluid through the first bypass to the inflow side of the second filter element.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 11, 2012
    Assignee: Mann + Hummel GmbH
    Inventor: Dieter Amesoeder
  • Patent number: 8246706
    Abstract: A device for facilitating rotation of a mattress in a plane formed by a box spring where slick surfaces between the mattress and the box spring are placed in contact to reduce the friction between. The slick surfaces are provided by a first cover for the top of a box spring and a second cover for the bottom of the mattress. The first cover is provided with a slick upper surface and non-slick bottom surface while the second cover includes a slick surface that faces downward. The first cover is attached to the box spring with its non-slick side is in contact with the box spring and its slick side is in contact with the slick side of the second cover of the first cover. A levitation device forms part of the second cover and includes an air supply that creates an air cushion between the mattress and the box spring which lifts the mattress and allows the mattress to be rotated.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: August 21, 2012
    Assignee: Levitation Sciences LLC
    Inventor: William John Scarleski
  • Publication number: 20120174787
    Abstract: A system including, a filter having an exterior surface, wherein the exterior surface contains a three-dimensional surface morphology.
    Type: Application
    Filed: January 12, 2011
    Publication date: July 12, 2012
    Applicant: General Electric Company
    Inventors: Vishal Bansal, Peter Martin Maly, Robert Warren Taylor
  • Patent number: 8206480
    Abstract: In an air filter unit (10) comprising at least one main air filter (1) and an auxiliary air filter (2) that is connected by an air conduit (3) to the main air filter (1) and has at least one auxiliary filter element, the auxiliary filter element is formed, at the unfiltered air side of the main air filter (1), by an at least partially porous wall of the air conduit (3) closed off at the intake side. In the reverse case, when installing at the filtered air side, the auxiliary filter element is arranged within the air conduit connected to the main air filter.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: June 26, 2012
    Assignee: Mann+Hummel GmbH
    Inventor: Mario Rieger
  • Patent number: 8192623
    Abstract: A filter element is disclosed. The filter element includes a filter casing defining an inner radial surface, a filter body disposed within the casing, the filter body having an axial, dirty side surface and an axial, clean side surface, wherein the filter body includes fluted filter media having one or more flutes that extend from the dirty side surface to the clean side surface and a pre-filter including an axial, dirty side surface and an axial, clean side surface, the pre-filter arranged within the casing so that the dirty side surface of the pre-filter is proximate the clean side surface of the filter body, wherein the filter body and the pre-filter are fixably retained by the inner radial surface of the casing.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: June 5, 2012
    Assignee: Wix Filtration Corp LLC
    Inventors: Jason W. Reid, Jason LaMarr Tate
  • Publication number: 20120023878
    Abstract: Apparatus is provided for removing oil from crankcase gases flowing from an internal combustion engine. The apparatus includes filtration particles, contained within an outer case, that collect oil particles and allow drainage of the oil into an accumulator. The apparatus includes a separation chamber which initially causes the oil to separate from the crankcase gases.
    Type: Application
    Filed: October 11, 2011
    Publication date: February 2, 2012
    Inventors: George Clark, Janet S. Clark
  • Publication number: 20120017555
    Abstract: In honeycomb filter 20, capturing layers 24 which are layers that capture and remove solid components in a fluid are formed on a porous partition portion 22 that forms a plurality of cells 23 each having one end open and the other end sealed and functioning as a channel of a fluid. The capturing layers 24 are formed so that the thickness has a tendency to decrease from a central region of the honeycomb filter toward an outer peripheral region of the honeycomb filter, the central region and the outer peripheral region being included in an orthogonal plane orthogonal to the cells 23. Accordingly, the fluid is led to flow at the outer peripheral side and more solid components can be captured and removed at the outer peripheral side.
    Type: Application
    Filed: September 29, 2011
    Publication date: January 26, 2012
    Applicant: NGK Insulators, Ltd.
    Inventors: Shingo IWASAKI, Takashi Mizutani
  • Publication number: 20120017554
    Abstract: In honeycomb filter 20, capturing layers 24 which are layers that capture and remove solid components in a fluid are formed on a porous partition portion 22 that forms a plurality of cells 23 each having one end open and the other end sealed and functioning as a channel of a fluid. The capturing layers 24 are formed so that the thickness has a tendency to decrease from an outer peripheral region of the honeycomb filter toward a central region of the honeycomb filter, the central region and the outer peripheral region being included in an orthogonal plane orthogonal to the cells 23. In this manner, the outer side, which is less likely to burn and remove the solid components, is made less likely to capture the solid components, and a central side, which is easy to burn and remove the solid components, is easy to capture more solid components.
    Type: Application
    Filed: September 29, 2011
    Publication date: January 26, 2012
    Applicant: NGK Insulators, Ltd.
    Inventors: Shingo IWASAKI, Takashi Mizutani
  • Patent number: 8088190
    Abstract: Disclosed is an improved axial flow unitary filter element for filtering a fluid stream, examples including a gaseous or an air stream. The filter element includes a primary filter portion and a pre-separation filter portion. The portions of said filter element are permanently integrated such that the portions form said unitary or one-piece filter element. The pre-separation portion is permanently secured and fully peripherally sealed about its peripheral portions to the primary filter such that a gaseous stream entering said inlet face of the primary filter must first pass through the pre-separation filter portion of the filter element. The pre-separation portion protects the primary filter portion from becoming water logged due to the presence of water droplets or snow in the fluid stream.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: January 3, 2012
    Assignee: Mann + Hummel GmbH
    Inventors: Ankur Patel, Cedric Dackam
  • Patent number: 8062403
    Abstract: An improvement to a reusable filtering assembly used in circulating air systems for residential or commercial heating and air conditioning systems. A series of layers consisting of filtering materials disposed between two framing units are comprised of the following: expanded metal lath, a layer of small fiber material, a layer of large fiber material, a layer of small crimp wire cloth, a layer of small fiber material, and a last layer of expanded metal lath. The present invention further comprises a stage loaded series of layers wherein the direction of air flow is from the first layer to the sixth layer comprising: Expanded Metal Lath, Small Fiber, Large Fiber, Small Crimp Wire Cloth, Small Fiber, and Expanded Metal Lath.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: November 22, 2011
    Inventor: Jim Goode
  • Patent number: 8021455
    Abstract: A filter element having multiple formed layers of filtration media is disclosed. The media are layered so as to form a pore size gradient. The filter element is capable of removing both solid and liquid particulates from a moving fluid stream. The filter element has high strength and compressibility. The layers can be supported on a porous or perforate support to provide mechanical stability during filtering operations. The filtration media layers can be formed into various filter element forms such as panels, cartridges, inserts, and the like.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 20, 2011
    Assignee: Donaldson Company, Inc.
    Inventors: Daniel E. Adamek, Jan Cappuyns, Egide Emmanuel Paul Baudry Moreau, Ming Ouyang, Robert M. Rogers
  • Publication number: 20110146490
    Abstract: An extended life filter element is provided that may at least double the service interval of a given filtration application utilizing the same or similar filter housing envelope provided. The filter element may include a more open pleated substrate with an efficiency layer and a prefilter on the upstream surface. The filter may be a foam sleeve. One exemplary application is for air filtration of air flow to electrical cabinets on locomotives.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: CLARK FILTER, INC.
    Inventors: Ian Joseph Derstler, Richard Kurcina
  • Patent number: 7914876
    Abstract: A honeycomb structure has a plurality of honeycomb segments each including porous partition walls that define a plurality of cells communicating with two end surfaces and an outer wall that surrounds the partition walls. The honeycomb segments are combined in a direction perpendicular to the axial directions of the honeycomb segments, and the outer walls of the honeycomb segments are integrally joined by a joint material. The outer wall of each honeycomb segment has corners. A cell in contact with the inner surface of a portion of the outer wall having one of the corners is defined by a plurality of sides including two sides formed by the inner surface and two sides each having one end in contact with the inner surface. An angle ?a of the corner formed by the two sides each having the one end in contact with the inner surface is 100 to 150°.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: March 29, 2011
    Assignee: NGK Insulators, Ltd.
    Inventor: Yutaka Ogura
  • Publication number: 20100307338
    Abstract: The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m2sec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cm2 SAE-dust of the class “fine”, exhibits a pressure increase of no more than 100 Pa.
    Type: Application
    Filed: May 18, 2010
    Publication date: December 9, 2010
    Inventors: Christian Hassman, Jörg Lehnert, Hans-Juergen Meitinger
  • Publication number: 20100307119
    Abstract: A method of making a multilayer filter and the multilayer filter made by the method. The method includes generally two steps. The first step is to coat a layer of nanofibers on a single side or both sides of a substrate medium to obtain a composite filter medium, and the second step is to fold the composite filter medium in a serpentine fashion to form a multilayer filter. The second step may alternatively be accomplished by stacking up a number of sheets of the composite filter medium to form a multilayer filter having a structure of two layers of nanofibers being sandwiched between two layers of said substrate medium. The resulting multilayer filter produced by either method contains at least one structural unit which has two layers of nanofibers being sandwiched between two layers of the substrate medium.
    Type: Application
    Filed: May 6, 2010
    Publication date: December 9, 2010
    Inventors: Wallace Woon-Fong Leung, Chi Ho Hung
  • Patent number: 7846230
    Abstract: A diesel soot particulate filter medium, as subject of the invention comprises fibers, preferably metal fibers. The diesel soot particulate filter medium has a thickness T between its inflow side and its outflow side being equal or more than 5 cm. The S/V at the inflow side is preferably more than 50 m2/m3 and the S/V at the outflow side is preferably less than 80000 m2/m3, whereas S/V increases stepwise or gradually from the inflow side to the outflow side. S is the sum of all mantle surface of the fibers present in a volume V.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: December 7, 2010
    Assignee: NV Bekaert SA
    Inventors: Feng Mei, Eddy Lambert
  • Publication number: 20100263337
    Abstract: Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems.
    Type: Application
    Filed: February 25, 2010
    Publication date: October 21, 2010
    Applicant: DONALDSON COMPANY, INC
    Inventors: THOMAS DONALD RAETHER, BRIAN ZAUNER, MARK BELCHER, GABRIEL SAFARIAN
  • Publication number: 20100192530
    Abstract: A filter element and filter apparatus, and a method for fabricating a filter element, include a filter element having alternating layers of a face sheet material and a convoluted filter material, with the alternating layers forming substantially longitudinally oriented flutes that extend axially along, or past, a radially acting seal, into previously unused portions of the cavity of a filter housing. In some embodiments, structures such as struts extending partially across an outlet end of the filter element, or a rigid web formed by a layer of resin extending axially a potted length into pome of the flutes from the outlet end resist axially oriented pressure forces on the alternating layers.
    Type: Application
    Filed: December 8, 2009
    Publication date: August 5, 2010
    Applicant: BALDWIN FILTERS, INC.
    Inventors: Robert M. Wydeven, Gene W. Brown, Steven J. Merritt
  • Patent number: 7763092
    Abstract: A filter for a gas generator in which the manufacture is simple, which has an adequate filter performance and cooling performance and, furthermore, which has high reliability with little damage caused in actuation of the gas generator, is provided. The filter for an air bag gas generator comprises a first layer formed from helically wound wire rods having a cross-sectional area of 0.03 to 0.8 mm2, in such a way that the pitch angle of wire rods vertically superposed in the radial direction is symmetrical, and a second layer that exists on the outer side of the first layer in the radial direction and is formed to have a finer filter particle size than the first layer using a wire rod narrower than the wire rod that forms the first layer.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: July 27, 2010
    Assignees: Daicel Chemical Industries, Ltd., Fuji Filter Manufacturing Co., Ltd.
    Inventors: Kazuya Koyama, Naoki Matsuda, Masato Hirooka, Masayuki Yamazaki
  • Patent number: RE43603
    Abstract: A dual filter arrangement for a vacuum cleaner for filtering particles of dust and debris from an airflow passing through the vacuum cleaner. The dual filter comprises a coarse pre-filter having an array of pores formed therein of substantially uniform diameter and a fine primary filter which is located rearwardly of the pre-filter in the direction of flow of the airflow. The dual filter is releasably latched to a main housing portion of the vacuum cleaner housing. A nose cone is removably secured to the housing and circumscribes the dual filter assembly. The dual filter enables even more efficient filtering of contaminants from dust and dirt entrained air ingested by the vacuum cleaner. Attachment of the dual filter to the main housing portion provides the additional advantage of increasing the capacity of the nose cone and eliminating the need for the user to handle the dual filter assembly when emptying contaminants collected within the nose cone.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: August 28, 2012
    Assignee: Black & Decker Inc.
    Inventors: Eric Coburn, Danny Bone