With Additional Transversely Arranged Members Patents (Class 55/499)
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Publication number: 20100107577Abstract: A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.Type: ApplicationFiled: January 11, 2010Publication date: May 6, 2010Applicant: Donaldson Company, Inc.Inventors: William Joseph Krisko, Wayne R.W. Bishop, Steven Scott Gieseke, Carolyn J. Finnerty, David W. Nelson
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Patent number: 7628834Abstract: An exemplary compressed air filter assembly for nail gun has an end cap at a handle of the nail gun, having an inlet aperture for guiding external compressed air therein, communicating with a main air chamber of the handle; an inlet pipe extending in the inlet aperture and the main air chamber, having a ring-shaped step formed at an inner peripheral surface of a sidewall thereof; and a filter disposed at the inlet pipe. At least one bar is provided at the sidewall of the inlet pipe, transversely disposed in the inlet aperture, and the filter being disposed between the at least one bar and the ring-shaped step. The compressed air filter assembly for nail gun utilize the at least one bar to support a center portion of the filter, which can improve the strength of the filter to resist the blasting of the compressed air.Type: GrantFiled: August 10, 2007Date of Patent: December 8, 2009Assignees: De Poan Pneumatic Corp., Robert Bosch Tool CorporationInventors: Po-Feng Huang, Marco Laubach
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Patent number: 7615091Abstract: A filter arrangement includes a filter element, a frame construction secured to the filter element, and a handle member secured to the filter element. In preferred embodiments, the handle member is secured to the frame construction. Preferably, the filter element includes a central core member, wherein fluted filter media is coiled around the central core member. Preferably, the central core member includes a plurality of corrugations, wherein the corrugations mateably engage at least some flutes. Preferably, the handle member is integral with the central core member, and also includes a fastening member for connection to a frame construction on the filter element. Methods for cleaning air and servicing an air cleaner preferably include constructions as described herein.Type: GrantFiled: April 30, 2007Date of Patent: November 10, 2009Assignee: Donaldson Company, Inc.Inventors: Steven Scott Gieseke, William M. Juliar, Edward A. Steinbrueck, Wayne R. W. Bishop, Patrick Golden, Wayne C. Musselman
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Patent number: 7582131Abstract: According to one aspect of the present invention, a filter assembly for removing particulate matter from a fluid stream is disclosed. The filter assembly includes a filter medium having a number of longitudinally extending spaced pleats. Opposing faces of adjacent pleats form a valley therebetween and include a pair of peak portions and a valley portion. The filter assembly further includes a plastic support net being pleated for supporting the filter medium in a pleated shape. The plastic support net includes spaced strands extending in a first direction and spaced strands extending in a second direction that is generally transverse the first direction. The strands extending in the first direction continuously extend over the valley and peak portions of opposing faces of adjacent filter medium pleats and are aligned in a direction substantially perpendicular to the longitudinal direction of the filter medium pleats.Type: GrantFiled: November 22, 2006Date of Patent: September 1, 2009Assignee: Conwed Plastics LLCInventors: Chris E. Worthington, Christopher P. Hakanson, Keith E. Misukanis
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Publication number: 20090188222Abstract: An air treatment system includes features for maximizing efficiency and effectiveness. In one embodiment, a sensor air passage utilizes a low pressure region created by the blower to draw air through the passage. In another embodiment, a filter frame includes a plurality of connectors formed integrally with the filter frame. In another embodiment, a screen is positioned adjacent to the blower intake. The screen includes a plurality of angled strands oriented in a particular direction. In another embodiment, a remote control holder is formed integrally with the housing. In another embodiment, a gasket is positioned between the blower and the housing, forming a seal between the blower and the housing.Type: ApplicationFiled: April 7, 2009Publication date: July 30, 2009Applicant: ACCESS BUSINESS GROUP INTERNATIONAL LLCInventors: Gregory K. Evans, Bradley J. Pippel
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Publication number: 20090139190Abstract: A bypass flow filter includes a plurality of channels which are formed of at least one structured wall layer and a filter layer. Projecting guide vanes and passages, which are formed by the wall layer and lead to a different channel, are provided in at least a majority of the channels. The passages have a narrowing cross section and a narrowing part of the cross section is directed towards an adjacent guide vane. An exhaust system and a vehicle having a bypass flow filter, are also provided.Type: ApplicationFiled: December 2, 2008Publication date: June 4, 2009Applicants: EMITEC GESELLSCHAFT FUR EMISSIONSTECHNOLOGIE MBH, TOYOTA MOTOR CORPORATIONInventor: Kait Althofer
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Patent number: 7537632Abstract: A panel filter frame and panel filter are provided. The panel filter frame is made from a one-piece die-cut blank of material. The die-cut blank includes a grill portion, four sidewall portions and four flap portions all integrally connected. Individual sidewall portions are interposed between a side of the grill portion and one of the four flap portions. The plurality of portions of the die-cut blank are interconnected at fold lines. The frame is formed when the die-cut blank is folded about the fold lines and the portions are secured in the folded position by at least a plurality of interlock receptacles formed in the terminating folded portion of the die-cut blank.Type: GrantFiled: June 22, 2006Date of Patent: May 26, 2009Assignee: Clarcor Air Filtration Products, Inc.Inventors: David Miller, Mitch Reynolds
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Patent number: 7507279Abstract: A fuel adsorption member 16 is fixed to an inner surface of a housing 13 by fixing pins 14. A fuel vapor leaking from an intake system of an engine is adsorbed by an active carbon included in an adsorption sheet member of the fuel adsorption member 16. The fuel adsorption member 16 is arranged along an inner surface of the housing 13. Accordingly, when an engine is operated, the fuel adsorption member 16 can reduce a ventilation resistance without being adversely affecting an intake air E. Further, the fuel adsorption member 16 is fixed to an inner surface of the housing 13 in accordance with a swaging of the fixing pins 14. Therefore, it is possible to prevent a damage of the fuel adsorption member 16 caused by a vehicle vibration, a fluctuation of an intake pressure or the like, and a reduction of a fuel adsorbing function caused by a wear of the active carbon.Type: GrantFiled: July 24, 2006Date of Patent: March 24, 2009Assignee: Toyota Boshoku Kabushiki KaishaInventors: Yoshiro Mizutani, Yasufumi Shibata
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Patent number: 7503953Abstract: A self-supporting, pleated filter including a plurality of pleats in a filter media that extend along a front face and a rear face. The pleats include a plurality of pleat tips and sloping side surfaces generally perpendicular to the direction of pleating. At least one planar reinforcing strip oriented in the direction of pleating is bonded to the pleat tips on the front face. At least one reinforcing member is positioned along the rear face of the filter media. The reinforcing member may be a reinforcing strip oriented in the direction of pleating and bonded to the rear face of the filter media. A second planar reinforcing strip may optionally be bonded to the reinforcing strip pleat tips. The reinforcing member, the first reinforcing strip and the second reinforcing strip can be aligned to form a truss structure.Type: GrantFiled: April 13, 2007Date of Patent: March 17, 2009Assignee: 3M Innovative Properties CompanyInventors: Douglas C. Sundet, James F. Pitzen
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Publication number: 20090064647Abstract: A filter element (300) comprising a housing (400) and a filter medium (500). The housing (400) comprises a plurality of walls forming a filter compartment (420), and an outlet chamber (422). A downstream wall (448) has a circular outlet opening (470) and an annular sealing gasket (472) surrounding the outlet opening (470). Lower corners (450) and sidewall fingers (452) carry clips (454, 456) for mounting the filter element (300) to an affixed bracket. The bottom wall (442) has a shroud-aligning catch (466) and fastener-insertion receptacles (468) for shroud-securing thumbscrews.Type: ApplicationFiled: September 8, 2008Publication date: March 12, 2009Inventor: Justin R. Darnell
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Patent number: 7497888Abstract: An air filter element partially-fabricated on site wherein one or more wire frames are fastened to one another to form a structure substantially conforming to the dimensions of the original equipment manufacturer's filter housing. One or more of the wire frames are flexibly attached to each other end-to-end by flexible attachment means, allowing the assembled filter unit to be inserted into the filter housing one frame at a time, with the frame sections yet to be inserted folded or directed off to one side, thus bypassing space restrictions. Flexible attachment means may comprise spring connectors. Also disclosed is an end-cap affixed to or formed at one or both ends of the filter element. The end-caps may also contain printed material, such as text or pictures, which may include instructions for use, identifying labels or symbols, or the like.Type: GrantFiled: September 1, 2006Date of Patent: March 3, 2009Inventors: Matthew P. Ashwood, David M. Kent
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Patent number: 7481862Abstract: A cylindrical shaped pleated media includes adhesive beads arranged on a periphery to bridge pleats and provide structural support for the pleated media. The pleated media is used in a fluid filter.Type: GrantFiled: June 9, 2005Date of Patent: January 27, 2009Assignee: Purolator Filters NA LLCInventor: Nishaj Attassery
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Publication number: 20080250766Abstract: Z-filter media pack arrangements and methods for providing them are described. Certain aspects concern a cured-in-place seal on an outside of a coiled z-filter media combination. Other aspects concern a cured-in-place center core, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.Type: ApplicationFiled: June 6, 2005Publication date: October 16, 2008Applicant: Donaldson Company, Inc.Inventors: Kevin J. Schrage, Eugene Lensing, Jeff S. Rahlf, Wayne R.W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky
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Publication number: 20080196370Abstract: A filter assembly is configured to be incorporated into an exhaust treatment device. The filter assembly comprises a frame, a filter media element, and a plurality of dividers supporting the filter media element within the frame. The frame has a first end and a second end defining a frame length therebetween. The filter media element is disposed within the frame and extends generally perpendicular to the frame length as a series of pleated contours. The plurality of dividers includes a first divider and a second divider. The first divider is disposed adjacent to the filter media element at the first end of the frame. The second divider is disposed adjacent to the filter media element at the second end of the frame.Type: ApplicationFiled: January 9, 2008Publication date: August 21, 2008Inventors: Eric J. Schramm, Phil P. Treier, Bradley R. Postage, Donald W. Baldwin
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Patent number: 7413588Abstract: A filter includes a filter element formed of filter media, and a plastic framework molded and bonded to and structurally supporting the filter media. One embodiment desirably provides a two-component assembly consisting solely of two components, namely the filter media and the plastic framework molded thereon. In a further embodiment, the plastic framework includes a resilient seal integrally molded therewith and of the same plastic material thereof, eliminating a separate component for the seal. In a further embodiment, a filter combination includes a primary filter element and a secondary filter element. In a further embodiment, a resilient integrally. molded seal is provided.Type: GrantFiled: November 24, 2004Date of Patent: August 19, 2008Assignee: Fleetguard, Inc.Inventors: Mark V. Holzmann, Kelly Ann Detra, Jim L. Alonzo, Chirag D. Parikh, Gregory J. Schoenmann, Michael J. Connor, Gary L. Rickle, Barry M. Verdegan
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Patent number: 7364602Abstract: An air cleaner assembly for use with a conventional household air conditioning system with a duct having an opening sized to receive a standard panel filter comprises a peripheral frame sized to be received within the opening in the return duct and sized to receive a standard panel filter. The air cleaner assembly is adapted to move a filter element inserted into the recess to a position exterior of the recess so that multiple filter elements can be mounted inside the duct.Type: GrantFiled: December 29, 2004Date of Patent: April 29, 2008Assignee: Whirlpool CorporationInventors: Guolian Wu, Andrew D. Litch, Marcus R. Fischer, Paul B. Allard, Alexander J. Karp
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Patent number: 7364607Abstract: A wrought fiber sheet or air cleaning filter unit that exhibits high performance and is biodegradable so as to enable reducing load upon environment. The wrought fiber sheet is produced by coupling biodegradable fiber sheets having electret properties by means of a configuration reinforcing member of a biodegradable material. Further, the frame for accommodating the wrought fiber sheet is also constituted of a biodegradable member so as to obtain an air cleaning filter unit that exerts biodegradability as a whole.Type: GrantFiled: May 19, 2003Date of Patent: April 29, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Kazuhiro Ueda, Toyota Seki
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Patent number: 7354470Abstract: A multiple retainer bridge device is provided for securing a utility member (e.g., a magnet or bracket) to posts on a housing member (e.g., a filter housing). When assembled, the utility member is staked onto the posts. A single retainer member prevents the utility member from sliding off of the posts. The retainer member has at least two ends. Each end has a recess, and each recess has a securing portion and a receptacle portion. The securing portion is fixed to the posts by, for example, sonic welding. Flash created by the fixing process is confined within the receptacle portion of the recesses.Type: GrantFiled: July 1, 2004Date of Patent: April 8, 2008Assignee: Filtertek Inc.Inventor: Keith Condrad
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Publication number: 20070294988Abstract: A panel filter frame and panel filter are provided. The panel filter frame is made from a one-piece die-cut blank of material. The die-cut blank includes a grill portion, four sidewall portions and four flap portions all integrally connected. Individual sidewall portions are interposed between a side of the grill portion and one of the four flap portions. The plurality of portions of the die-cut blank are interconnected at fold lines. The frame is formed when the die-cut blank is folded about the fold lines and the portions are secured in the folded position by at least a plurality of interlock receptacles formed in the terminating folded portion of the die-cut blank.Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Applicant: Clarcor Air Filtration Products, Inc.Inventors: David Miller, Mitch Reynolds
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Publication number: 20070261374Abstract: An air filter arrangement, an air cleaner assembly including the air filter arrangement and methods of assembly and use are described. An air filter arrangement comprising a serviceable filter cartridge is described. The typical cartridge includes a recessed first flow face and an opposite outwardly projecting second flow face, with a central apex. Features of the cartridge, and an air cleaner for installation into the cartridge, are described.Type: ApplicationFiled: January 10, 2007Publication date: November 15, 2007Inventors: Benny Kevin Nelson, Gregory L. Reichter, Bruce Allen Boehrs, Paul Anthony Wendt
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Patent number: 7288130Abstract: A cassette filter comprising a frame and a pleated filter material that is inserted therein, in addition to a protective grid having passage holes. The protective grid is fastened at a distance from the filter material in the frame and has a flow resistance that is smaller than that of the pleated filter material. The protective grid includes at least one film strip that is bent around the passage holes, said film strip extending parallel relative to the direction of flow of the medium to be filtered, and in that the protective grid recurrently contacts at least one other identically bent film strip outside the passage holes in contact points and is glued to said other film strip in the contact points.Type: GrantFiled: September 26, 2002Date of Patent: October 30, 2007Assignee: Carl Freudenberg KGInventors: Renate Tapper, Thomas Schroth, Thomas Caesar
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Patent number: 7258717Abstract: The invention is related to a framed filter media comprising a pleated filter media having a fluid inlet face and a fluid outlet face with peripheral sidewalls. The peripheral sidewalls of the pleated filter are attached to the frame generally by an adhesive. The frame is preferably a flexible strip frame formed into three or more (up to an infinite number if the sidewall sections(s) is formed into a circular filter frame) sidewall sections each having a substantially flat sidewall and at least two projecting filter retaining tabs which form a flange on a first face of the sidewall section for containing the filter along its peripheral sidewalls and any adhesive. A cross brace is also inserted within the filter retaining tabs which fits into at least one pleat of the framed pleated filter media. The cross brace fits into the space formed by the pleated filter media but is not in continuous contact with the filter media forming the pleat.Type: GrantFiled: June 28, 2004Date of Patent: August 21, 2007Assignee: 3M Innovative Properties CompanyInventor: Dean R. Duffy
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Patent number: 7255723Abstract: A fluid pleated filter assembly arrangement including a method and structure wherein crests of the pleated medium are sharp and narrow being enhanced by alignment of the fibers with the direction of fluid stream flow with the crests being supported by a preselectively controlled breadth and thickness support strip and adhesive fastening band disposed intermediate opposed side edges of the support strip.Type: GrantFiled: January 9, 2004Date of Patent: August 14, 2007Assignee: AAF McQuay, Inc.Inventors: Kyung-Ju Choi, Dennis R. Porter, Ronald D. Unthank
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Patent number: 7182804Abstract: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom.Type: GrantFiled: February 7, 2005Date of Patent: February 27, 2007Assignee: Donaldson Company, Inc.Inventors: Steven S. Gieseke, Robert A. Dushek, Carolyn J. Finnerty
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Patent number: 7175699Abstract: A filter assembly including a filter medium installed in at least one receptacle. The filter assembly includes a heating system to heat the filter medium. The filter medium includes metal fibers. The receptacle or receptacles are provided with at least one air inlet and with at least one air outlet and a device to eliminate the air and free space around and in the filter medium. The receptacles may include at least two deformable walls, which are membranes made of a polymeric or elastomeric material, and the filter medium may include at least one sintered, non-woven metal fiber web.Type: GrantFiled: September 6, 2001Date of Patent: February 13, 2007Assignee: NV Bekaert SAInventor: Bruno Aubert
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Patent number: 7169202Abstract: A filter assembly includes a reusable filter frame and a replaceable, pleated, reversibly expandable, self-spacing filter removably arranged in the frame. The self-spacing pleated filter expands uniformly with equal pleat spacing to allow the filter to be easily installed in the reusable filter frame without the aid of a secondary spacing structure. When the filter is expanded to the length of the filter frame, the filter is under tension, thereby allowing the length of the filter to be readily adjusted to match the length of the frame and allowing the pleats to be aligned with corresponding ribs provided in the frame.Type: GrantFiled: December 24, 2003Date of Patent: January 30, 2007Assignee: 3M Innovative Properties CompanyInventor: James O. Kubokawa
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Patent number: 7156891Abstract: An air filter including a filter media having a plurality of flat pleats defining a plurality of truncated pleat tips and sloping side surfaces along a front face and a rear face. The truncated pleat tips are oriented perpendicular to the direction of pleating and are configured with a planar tip portion. The reinforcement structure includes at least one generally planar first reinforcing strip oriented in the direction of the pleating and connected to the truncated pleat tips along the rear face. The reinforcing structure further includes at least one generally planar second reinforcing strip oriented in the direction of pleating and connected to the truncate pleat tips along the front face.Type: GrantFiled: September 10, 2004Date of Patent: January 2, 2007Assignee: Filtration Group IncorporatedInventors: Philip J. Winters, Kevin Hobbs, Michael Corbat, Dean Kerstetter
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Patent number: 7150774Abstract: A replaceable, self-spacing, pleated, filter insert that can be easily installed in a reusable filter frame without the aid of a secondary spacing structure includes reversibly collapsible and expandable filter media including a plurality of pleats that expand uniformly when the filter is expanded. When the filter is expanded to the length of the filter frame, the filter is under tension and behaves like a spring, thereby allowing the length of the filter to be readily adjusted to match the length of the frame and allowing the pleats to be aligned with corresponding ribs provided in the frame.Type: GrantFiled: December 24, 2003Date of Patent: December 19, 2006Assignee: 3M Innovative Properties CompanyInventors: James O. Kubokawa, John F. Reed
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Patent number: 7135052Abstract: A cartridge filter includes a folded package including filter material and a frame holding the folded package. The frame includes a plurality of profiled strips having identical profiles, and each having two ends. The frame also includes a plurality of corner joints, each disposed at an end of a respective profiled strip. Each corner joint includes an end cap for engaging pair wise with an end cap of an adjacent one of the plurality of corner pieces.Type: GrantFiled: June 14, 2002Date of Patent: November 14, 2006Assignee: Carl Freudenberg KGInventors: Michael Meierhoefer, Renate Tapper, Thomas Caesar, Heiko Knust, Thorsten Schmitt, Norbert Kuck, Rainer Kaffenberger
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Patent number: 7097684Abstract: A high efficiency fluid filter arrangement wherein a combined layer of scrim and filter media applications is of empirically relatively estimated weight size and depth with intermediate pleat spacing so as to arrive at a combined filtration capability value in keeping with selected approved test standards.Type: GrantFiled: December 12, 2002Date of Patent: August 29, 2006Assignee: AAF-McQuay, Inc.Inventor: Kyung-Ju Choi
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Patent number: 7090708Abstract: A filter element for filtering a fluid stream, comprising a cylindrical support body, which is provided with openings and is sealed at one axial end, and a filter medium arranged on the support body. The filter medium is a strip material, which extends over approximately the entire length of the support body, and is wrapped around the circumference of the support body, and the start and the end of the strip material are welded together.Type: GrantFiled: May 12, 2003Date of Patent: August 15, 2006Assignee: Mann & Hummel GmbHInventors: Manfred Winter, Bernhard Staudenmayer, Angelika Gohle, Holger Weiss
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Patent number: 7077921Abstract: A method of manufacture includes the steps of laminating together a pleated filter media with an expanded wire forming a laminate; pleating the laminate forming a filter pack with a two pleated edges; forming an inner frame with inner front and back panels, an inner top side with two flaps and an inner bottom side with another two flaps; adhering the pleated first edge to the inner top side; inserting a support wire between the inner frame and the filter media; adhering the flaps together to form box to contain the filter media; forming an outer frame with outer front and back panels, an outer top side with two flaps and an outer bottom side with another two flaps; adhering the flaps together to form a second box to contain the filter media; inserting clips to engage the outer and inner frames forming an expandable air filter.Type: GrantFiled: October 20, 2003Date of Patent: July 18, 2006Inventor: Anthony Dimicelli
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Patent number: 7070638Abstract: The burp filtering device has the body of a writing pen, with an intake port at the upper end of the body, a plurality of exhaust ports adjacent the writing tip, and a filter disposed within the body. The filter may be made of activated charcoal or other media for filtering eructation odors. In use, the user holds the upper end of the pen body to his lips, releases the suppressed burp, and the filtered gas is exhausted through the ports at the writing tip.Type: GrantFiled: December 10, 2003Date of Patent: July 4, 2006Inventor: Bryan S. Jeanfreau
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Patent number: 7044992Abstract: In a particle filter for exhaust gases of internal combustion engines, particularly Diesel engines, including a filter body with filter pockets which are formed from sinter metal sheets and are wedge-shaped with an opening at the blunt end and edges formed by converging pocket side walls and arranged adjacent one another such that, between adjacent filter pockets, corresponding opposite spaces are formed with openings facing in a direction opposite to the openings at the blunt end, the filter pockets side walls are spaced from one another by widening means extending along at least an edge of the filter pockets so as to increase the width of the space between the side walls of the filter pockets.Type: GrantFiled: December 18, 2003Date of Patent: May 16, 2006Assignee: HJS Fahrzeugtechnik GmbH & Co.Inventors: Gerhard Jürgen Fränkle, Hermann Josef Schulte, Hans Peter Frisse, Carsten Jutka, Jochen Koll, Franz Kraft
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Patent number: 7041158Abstract: The end cap (2) comprises a cylindrical gasket-type fitting formed of soft, malleable material. The end cap (2) is connected to the end of an air filter (1) with an adhesive (6). The end cap has a general “U” shaped end portion that encases one end of the air filter (1), and includes a locking tab (7). The locking tab (7) is formed on the end cap's (2) interior lip to assist in holding the end cap (2) in place. Pre-molded air filter end caps (2) are primarily designed for use in safety air filters (1) for heavy motor vehicle applications, specifically, off road vehicles such as bulldozers, bob cats, transfer trucks, and the like.Type: GrantFiled: May 14, 2003Date of Patent: May 9, 2006Assignee: Wix Filtration Corp.Inventors: Donald Troy Chilton, Mitchell Jerome Baker
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Patent number: 7004989Abstract: Embodiments of a filter assembly and method of fabricating the same are provided. In one embodiment, a filter assembly includes a filter media pack disposed in a frame assembly. A first seal biases the filter media pack against a second seal along at least one edge of the media pack. In another aspect, a method of fabricating a filter assembly includes the steps of placing a filter media pack in at least a first portion of a frame assembly and compressing an edge of the media pack between a first and second seal.Type: GrantFiled: August 22, 2003Date of Patent: February 28, 2006Assignee: Camfil Farr, Inc.Inventor: Niclas Karlsson
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Patent number: 6955702Abstract: A reusable filter frame adapted to receive a replaceable filter element includes a base and a cover connected with the base. The base includes a plurality of longitudinal rails and a plurality of transverse ribs for supporting and spacing the filter element. The filter frame also includes a securing mechanism for securing the filter element to the frame and maintaining the filter element in its expanded condition.Type: GrantFiled: June 14, 2002Date of Patent: October 18, 2005Assignee: 3M Innovative Properties CompanyInventors: James O. Kubokawa, Ben G. Rogowski, Thomas A. Tedham
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Patent number: 6955701Abstract: An improved filter element is provided. In preferred form, the filter element includes first and second end caps, with media extending therebetween. The end caps are preferably formed from foamed polyurethane, and preferably there are no outer peripheral standoff indents provided in the end caps. Each end cap preferably includes a standoff ring, spaced from an outer perimeter, positioned therein. Preferred approaches to manufacturing such elements are provided.Type: GrantFiled: March 28, 2002Date of Patent: October 18, 2005Assignee: Donaldson Company, Inc.Inventor: Kevin J. Schrage
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Patent number: 6884274Abstract: Air filter with a sidewall and inverted cone cap sections; a beveled crown unifying the sidewall with the cap to form a one-piece filter; a seat on the bottom of the wall section with seals for contact with a support; and a flange affixed to the cap to adjust contact with a support surface. The filter media includes four-layer oleophilic cotton mesh layers supported between two structural mesh layers, with an efficacious amount of oil to increase particle trapping.Type: GrantFiled: March 31, 2003Date of Patent: April 26, 2005Assignee: Advanced Flow Engineering, Inc.Inventors: Shahriar Nick Niakan, Stuart T. Miyagishima, Christopher C. Beau, Oscar Morales
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Patent number: 6866700Abstract: A filter housing assembly including a substantially frusto-conical shaped housing member having an open end portion and a substantially closed dome shaped portion, the housing member being adaptable for receiving a filter member therewithin and having at least one opening extending through the dome shaped portion for allowing air to enter therewithin. A first end cap member adaptable for engaging one end portion of a filter member is receivable within the housing member, and a second end cap member adaptable for engaging the opposite end portion of a filter member is engageable with the housing member. The second end cap member includes an opening for allowing air to exit the housing member. The housing member includes a centering mechanism engageable with the first end cap member for facilitating centering of the filter member within the housing member when the first end cap member is positioned within the housing member.Type: GrantFiled: August 27, 2002Date of Patent: March 15, 2005Assignee: AG IndustriesInventor: Harold P. Amann
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Patent number: 6860916Abstract: A filter assembly includes a reusable filter frame and a collapsible and expandable filter element. The filter frame includes a base and a cover connected with the base. The base includes a plurality of longitudinal rails and a plurality of transverse ribs for supporting and spacing the filter element. The filter frame also includes a securing mechanism for securing the filter element to the frame and maintaining the filter element in its expanded condition. The filter element includes filter media having a plurality of pleats adapted to mesh with the ribs of the filter frame and a flexible spacing structure attached to the pleated media that provides the pleated media with uniform pleat spacing but allows the media to be collapsed to a compact form.Type: GrantFiled: June 14, 2002Date of Patent: March 1, 2005Assignee: 3M Innovative Properties CompanyInventors: James O. Kubokawa, Ben G. Rogowski, Thomas A. Tedham
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Patent number: 6852148Abstract: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom.Type: GrantFiled: December 28, 2000Date of Patent: February 8, 2005Assignee: Donaldson Company, Inc.Inventors: Steven S. Gieseke, Robert A Dushek, Carolyn J. Finnerty
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Patent number: 6843820Abstract: A filter assembly with a frame and a filter element including a sheet of filter media with attachment strips at opposite ends. The frame positions the filter element with the filter media across a passageway in the frame and with the attachment strips along opposite end parts of a perimeter portion of the frame. Abutments extend along the perimeter portion between its end parts and along opposite edges of the filter material. Projections on the end parts are engaged in openings in the attachment strips and are spaced from the abutments such that the filter element can be mounted on the frame with either of the attachment strips engaged with the projections at either of the end parts while the filter element can only be mounted on the frame with an inlet surface of the sheet of filter material facing the same direction as a front surface of the frame.Type: GrantFiled: March 4, 2003Date of Patent: January 18, 2005Assignee: 3M Innovative Properties CompanyInventor: James O. Kubokawa
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Patent number: 6814773Abstract: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panels edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an each collapsing of the filter for storage. Forming a part of the nondisposable framework for support of the disposable filter are a pair of end plates which are C-shaped in cross section for slidably receiving an end panel of the media filter therein. The depth of the C-shaped channel is sufficient to allow a plurality of the unexpended pleats to be stored therein so that a single sized filter may be used for various sizes of cabinet openings.Type: GrantFiled: October 9, 2001Date of Patent: November 9, 2004Assignee: Carrier CorporationInventors: Rajendra K. Shah, Dwight H. Heberer, Danny L. Jenkins
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Publication number: 20040182055Abstract: A collapsible expandable air filter assembly includes an expandable pleated filter media, a filter frame made from a cardboard blank that is pre-scored, slit, creased and die cut to define a central area enabling air passage therethrough, and side and end panels foldable to positions generally normal to the central area to form a perimeter wall about the central area to receive and support the expanded air filter media. A filter grill is formed from a cardboard blank and has an open central area and laterally opposite marginal side and end walls foldable to enable mounting on the filter frame to assist in retaining the filter media within the filter frame. Separating fingers are formed integral with or separate from but connectable to the filter grill and are adopted to be positioned between adjacent expandable pleats to evenly position and secure the filter pleats.Type: ApplicationFiled: January 29, 2004Publication date: September 23, 2004Applicant: Fedders CorporationInventor: Gerald M. Wynn
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Publication number: 20040172928Abstract: A filter assembly including a frame having a through passageway between front and rear surfaces surrounded by a perimeter portion; and a filter element including a sheet of flexible filter media with longitudinal attachment strips at opposite ends and extending at about a right angle to opposite edges of the sheet. Structure on the frame receives and positions the filter element with the sheet of filter media extending across the passageway with an inlet surface of the sheet facing the same direction as the front surface of the frame and with the attachment strips of the filter element extending along opposite end parts of the perimeter portion.Type: ApplicationFiled: March 4, 2003Publication date: September 9, 2004Applicant: 3M Innovative Properties CompanyInventor: James O. Kubokawa
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Patent number: 6776814Abstract: An exhaust aftertreatment filter (100) is provided for internal combustion engine exhaust, and includes an axially extending cylindrical filter roll (106) having pleated filter media (110) defining a plurality of axially extending flow channels (130), and having a first open-flow section (142) with open flow channels (140), and a second filtering section (148) with alternately sealed flow channels (136, 138) forcing exhaust to flow through (158) the pleated filter media (110). A core section (142) aides filter regeneration by providing an exothermic reaction. A combination catalytic converter and filter includes a first catalytic section (142) treated with a catalyst, and a second filter section (148) with alternately sealed flow channels (136, 138).Type: GrantFiled: May 8, 2001Date of Patent: August 17, 2004Assignee: Fleetguard, Inc.Inventors: Kurt M. A. Badeau, William C. Haberkamp
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Patent number: 6758877Abstract: A filter and a method of manufacturing the filter which is formed by spinning a fiber in a semi-molten state onto a mold such that the mold is provided as a filter structural member. The method obviates the need to remove the filter from the mold and thus simplifies the manufacture of the filter.Type: GrantFiled: February 25, 2002Date of Patent: July 6, 2004Assignee: Toyoda Boshoku CorporationInventors: Kouichi Oda, Tomohide Nishino
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Patent number: 6712870Abstract: An annular air filter utilizes an end gasket which is snap fitted to a metal end cap. The gasket has a sealing lip with a radially extending, axially facing sealing face for sealing with a filter housing; and an annular, axially extending body portion. The annular, axially extending body portion has an axially extending, radially facing sealing surface for sealing with an air outlet pipe projecting into the housing. The gasket is made of foam rubber, rubber or polyurethane material and is optionally fixed on the air filter element with adhesive.Type: GrantFiled: November 30, 2001Date of Patent: March 30, 2004Assignee: Dana CorporationInventors: Willie Luther Stamey, Jr., Robert Sean Cunningham
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Patent number: 6709480Abstract: A self-supporting, pleated filter, and method of making the same. The method includes forming a plurality of pleats in a filter media that extend along a front face and a rear face. The pleats include a plurality of pleat tips and sloping side surfaces generally perpendicular to the direction of pleating. At least one planar reinforcing strip oriented in the direction of pleating is bonded to the pleat tips on the front face. At least one reinforcing member is positioned along the rear face of the filter media. The filter media is then cut to size. Frame members are applied for some applications. The reinforcing member may be a reinforcing strip oriented in the direction of pleating and bonded to the rear face of the filter media prior to the step of forming the plurality of pleats. A second planar reinforcing strip may optionally be bonded to the reinforcing strip pleat tips. The reinforcing member, the first reinforcing strip and the second reinforcing strip can be aligned to form a truss structure.Type: GrantFiled: December 18, 2002Date of Patent: March 23, 2004Assignee: 3M Innovative Properties CompanyInventors: Douglas C. Sundet, James F. Pitzen