Filter Element Patents (Class 210/493.5)
  • Patent number: 10730001
    Abstract: A panel filter is provided. The panel filter can have extended life or higher dust holding capacity by one or more of the following provisions of (a) placing the dimpled pattern (compressed region) on the downstream side and outlet face of the media, (b) using the dimpled media in combination with adhesive spacers and embossments, (c) selection of a media that is depth loading rather than surface loading, (d) operating the pleater/embossing assembly in a manner so as to maintain integrity of the dimples and/or other features as described herein.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: August 4, 2020
    Assignee: Clarcor Air Filtration Products, Inc.
    Inventors: Jason Tate, LaMonte A. Crabtree
  • Patent number: 10703862
    Abstract: An aromatic polysulfone composition is provided which includes an aromatic polysulfone and an organic compound having a boiling point no lower than 100° C. and no higher than 400° C. The organic compound is contained in an amount of at least 0.1 ppm and at most 10 mass % relative to the mass of the aromatic polysulfone. The aromatic polysulfone has repeating units expressed by formula (1): -Ph1-SO2-Ph2-O—??(1) In formula (1), Ph1 and Ph2 represent phenylene groups in which one or more hydrogen atoms that bind to the phenylene groups may, independently of each other, be substituted with an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 20 carbon atoms, or a halogen atom.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: July 7, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Kazuyuki Ito
  • Patent number: 10617990
    Abstract: An air-filtering medium, an air filter pack, and an air filter unit, which are capable of reducing the number of portions where filtering functions can no longer be exhibited while suppressing an increase in pressure drop are provided. An air-filtering medium is used in a pleated state and includes a main collecting layer, a downwind-surface interval maintaining structure material, and an upwind-surface interval maintaining member. The main collecting layer includes an upwind-surface embossed protrusion protruding in a thickness direction of the main collecting layer. In the pleated state, the upwind-surface embossed protrusion is provided at least on an upstream side of a center of the air-filtering medium in a direction of airflow passing through the air-filtering medium, and protrudes towards an upwind-surface side.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 14, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Hyoudou, Tatsumi Sakano
  • Patent number: 10617978
    Abstract: Support and drainage materials, filter including the materials, and methods of use are disclosed.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: April 14, 2020
    Assignee: PALL CORPORATION
    Inventors: John P. Miller, Martin Zeiler
  • Patent number: 10369505
    Abstract: An air filter system for a motor vehicle includes a common housing, first and second D-shaped filter elements and a common cover. The common housing defines a first airflow chamber extending between a first inlet duct and a first outlet duct and a second airflow chamber extending between a second inlet duct and a second outlet duct. The first airflow chamber is fluidly separated from the second airflow chamber. The first D-shaped filter element is disposed in the first airflow chamber for filtering air passing through the first airflow chamber. The second D-shaped filter element is disposed in the second airflow chamber for filtering air passing through the second airflow chamber. The common cover is secured to the housing and closes the first airflow chamber and the second airflow chamber.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 6, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventors: Jason Worrall, Austin Jackson, Erich Fedak, Daniel Schmid
  • Patent number: 10226730
    Abstract: A filter medium includes first and second porous films mainly containing fluororesin, and a pre-collection member upstream of the first film. The second film is downstream of the first film. The pre-collection member has a pressure drop when air is passed through at a flow rate of 5.3 cm/s of between 15 Pa and 55 Pa, a collection efficiency of NaCl particles having a particle diameter of 0.3 ?m when air containing the particles is passed hrough at a flow rate of 5.3 cm/s of between 25% and 80%, a thickness of 0.4 mm or less, and a PF value between 7 and 15. The PF value={?log((100?collection efficiency (%))/100)}/(pressure drop (Pa)/1000). A ratio of the PF value of the pre-collection member to the PF value when the first and second films are overlapped, is between 0.20 and 0.45. The filter medium can be used in a filter pack or filter unit, and may be produced by integrating the first and second films and the pre-collection member using heat lamination.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: March 12, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Tatsumi Sakano, Kunihiko Inui, Yoshiyuki Shibuya
  • Patent number: 10099887
    Abstract: A method for providing folded sheet structures comprising selecting an aspect surface, applying a shaping function to said aspect surface to yield a shaped surface, applying a floating point method to obtain a floated surface, and calculating a corresponding fold pattern on a unfolded sheet. The floating point method can be applied reiteratively to calculate the corresponding fold pattern. Machines for folding multifold structures, laminate structures, and micro- and nano-structures are disclosed.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: October 16, 2018
    Assignee: FOLDSTAR, INC.
    Inventor: Daniel H. Kling
  • Patent number: 9737836
    Abstract: A filter element includes a first bellows which is produced from a first filter medium, in view of the object of providing a filter element which after some service life can be readily modified in such a manner that said filter element again achieves an adequate filtration effect, is characterized in that a second bellows which is produced from a second filter medium is provided, wherein the second bellows is inserted into a recess of the first bellows and the periphery of the second bellows is partly or completely surrounded by the first bellows or wherein the second bellows is placed onto the first bellows in such a manner that the recess is covered by the second bellows and the fold tips of the bellows are aligned with one another.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: August 22, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Knuth Fickartz, Volker Braeunling
  • Patent number: 9724630
    Abstract: A removable, reusable, pleated woven wire filter comprising: (a) a stainless steel perforated core having one-half-inch stainless steel round bar reinforcement rings welded to one-half-inch stainless steel round bar cross bars to create bar-ring junctures, and having 11-gauge stainless steel attachment clips welded to each end of the perforated core; (b) a three-layer stainless steel pleated woven wire filter media wrapped around the perforated core, the filter media having spaced apart pleats with external peaks, and an external filter media surface comprising the external peaks of the pleats; (c) a stainless steel flattened expanded metal shroud adjacent to and encircling the external peaks, and (d) a stainless steel top end cap base and a stainless steel bottom end cap base connected to the metal shroud, both cap bases sealed against top and bottom ends of the filter media with a stainless steel adhesive sealant rated at 2,000 degrees Fahrenheit.
    Type: Grant
    Filed: April 13, 2014
    Date of Patent: August 8, 2017
    Assignee: PECOFacet (Houston), LLC
    Inventor: Frank Lynn Bridges
  • Patent number: 9566731
    Abstract: Filter element (1) has opposing end sections (3A, 3B) of a filter material sheet (2) that are connected to each other in a fluid-tight manner, wherein a molded or extruded plastic casing (5) encloses the end edges (4A, 4B) of the end sections (3A, 3B). A method for producing a corresponding filter element (1) includes the encasing of opposing end edges (4A, 4B) of end sections (3A, 3B) of a filter material sheet (2) with a plastic casing (5) so as to form a continuous bellows.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: February 14, 2017
    Assignee: MANN+HUMMEL GMBH
    Inventors: Klaus Gehwolf, Michael Maier
  • Patent number: 9492773
    Abstract: A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 15, 2016
    Assignee: MANN+HUMMEL GMBH
    Inventors: Karlheinz Muenkel, Joerg Menssen
  • Patent number: 9403338
    Abstract: A three dimensional folded structure, for use in lightweight design and lightweight construction, is folded at regular intervals and cannot be folded flat. The folded structure substantially extends in two directions and includes a small number of folded ply sheets. Each of the ply sheets is formed by an originally planar blank of an initially flat material lying in a zero plane and includes fold lines and polygonal holes disposed at regular distances. Each of the ply sheets is subdivided into a plurality of segments, each in the form of a polygonal planar entity that is, except at a border of the ply sheet, delimited by the fold lines and the border-edge-sections of a respective polygonal hole. Each ply sheet is folded up in two directions. During folding, the holes close into slits. Each slit of one ply-sheet is completely bridged by the other ply-sheet.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 2, 2016
    Inventor: Florian Tuczek
  • Publication number: 20150129487
    Abstract: A poly(arylethersulfone) polymer comprising recurring units derived from at least one aromatic dihalocompound comprising at least one —S(?O)2— group and at least one diol (D) comprising at least one cycloaliphatic moiety (M).
    Type: Application
    Filed: May 15, 2013
    Publication date: May 14, 2015
    Inventors: Atul Bhatnagar, Hong Chen, Chantal Louis, Narmandakh Taylor, Joel Pollino
  • Publication number: 20150053606
    Abstract: A nonwoven sheet contains a substrate layer formed from a fiber aggregate nonwoven structural member; the fiber aggregate nonwoven structural member containing a thermal adhesive fiber; the thermal adhesive fibers are melt-bonded to fix the fibers of the member. The average thickness of the substrate layer is adjusted to not less than 0.2 mm to less than 1 mm, and the thermal adhesive fibers are substantially uniformly melt-bonded in a surface direction of the substrate layer. The sheet may have a surface layer over at least one side of the substrate layer, the surface layer may contain a fiber aggregate nonwoven structural member having an apparent density higher than the apparent density of the substrate layer. The surface layer may comprise a layer formed by heat-pressing or may be formed from a meltblown nonwoven fabric. The thermal adhesive fiber may be substantially uniformly melt-bonded in a thickness direction of the substrate layer.
    Type: Application
    Filed: March 28, 2013
    Publication date: February 26, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Yasuhiko Sakamoto, Sumito Kiyooka
  • Publication number: 20150013290
    Abstract: A pleated filter media comprises a plurality of pleats comprised of pleat segments extending in an axial direction between first and second axial ends and extending in a transverse direction that is perpendicular to the axial direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines. Axial flow channels are defined between the pleat segments in the lateral direction and the plurality of pleats has a width in the transverse direction that varies along the axial direction.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Applicant: CUMMINS FILTRATION IP, INC,
    Inventors: Mark V. Holzmann, Arun Janakiraman, Orvin D. Kendall, Scott W. Schwartz, Eric A. Janikowski, Michael J. Connor, Kurt M. A. Badeau, Murray R. Schukar
  • Publication number: 20140367325
    Abstract: This invention relates to a multi-stage stretching operation for production of expanded stretched porous polytetrafluoroethylene (ePTFE) fibrous materials with minimal node size and minimized filament sizes. A plurality of stretching or expansions may be implemented on the film including combinations of MDO and TDO stretches including at least two longitudinal stretches and at least one transverse stretch. Subsequent stretches occur at rates generally less than a prior similar longitudinal or transverse type of expansion.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 18, 2014
    Inventors: Kyung-Ju Choi, Yoshiyuki Shibuya, Kunihiko Inui
  • Publication number: 20140338293
    Abstract: A duplex fluid filter assembly allows extended life between filter replacements, by automatically back-flushing one filter unit with clean fluid from another filter unit of the duplex assembly.
    Type: Application
    Filed: June 14, 2013
    Publication date: November 20, 2014
    Inventors: Jon Williams, Michael Long
  • Patent number: 8888885
    Abstract: A pleated filter media comprises a plurality of pleats comprised of pleat segments extending in an axial direction between first and second axial ends and extending in a transverse direction that is perpendicular to the axial direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines. Axial flow channels are defined between the pleat segments in the lateral direction and the plurality of pleats has a width in the transverse direction that varies along the axial direction.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 18, 2014
    Assignee: Cummins Filtration IP Inc.
    Inventors: Anthony Barreteau, Arun Janakiraman, Kurt M. A. Badeau
  • Publication number: 20140332461
    Abstract: A support element, comprising a netting comprising a composition comprising a polyphenylene sulfide resin and at least one polyhedral oligimeric silsequioxane additive, is provided.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 13, 2014
    Applicant: Pall Corporation
    Inventors: Kyle R. Kathan, Jonathan A. Liddy, Michael J. Adams
  • Publication number: 20140319050
    Abstract: A water filter assembly is provided. The water assembly includes a cylindrical filter media, a pair of caps mounted at opposite ends of the cylindrical filter media, and a support column positioned within the cylindrical filter media. Inner and outer diameters of the cylindrical filter media can be selected in order to improve filtering of the cylindrical filter media. Also, at least one cap of the pair of caps can define an outlet having a diameter less than the inner diameter of the cylindrical filter media.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 30, 2014
    Applicant: General Electric Company
    Inventor: Timothy Scott Shaffer
  • Publication number: 20140311965
    Abstract: A filter arrangement for liquids has a filter housing and a functional carrier arranged inside the filter housing. A cylindrical filter element is inserted axially into the filter housing and defines an unfiltered side and a filtered side inside the filter housing. A non-return diaphragm is secured within the filter housing, wherein the non-return diaphragm is arranged on the functional carrier so as to effect an axial and/or radial sealing action of the unfiltered side relative to the filtered side of the filter arrangement.
    Type: Application
    Filed: July 7, 2014
    Publication date: October 23, 2014
    Inventors: Markus Kolczyk, Rainer Loos, Daniel Lucas, Sven Epli, Herbert Jainek, Ralf Blum, Joerg Kramer
  • Publication number: 20140305088
    Abstract: A filter element (1) has first and second end sections (3A, 3B) of a flat filter medium which are secured to one another. A sheathing (4) is provided, wherein said sheathing is compressed by the end sections (3A, 3B) and surrounds the end edges (9) of the end sections (3A, 3B). Alternatively, the filter element (1) has first and second end sections (3A, 3B) of a flat filter medium, wherein the first end section (3A) has a fold (5) having two fold legs (6A, 6B). The end section (3B) of the second end section (2B) is then compressed between the fold legs (6A, 6B).
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Michael Maier, Martina Bachfischer
  • Patent number: 8789708
    Abstract: Versions of the invention include compositions and methods for making them that include a polymeric porous membrane with one or more atmospheric pressure microwave plasma modified surfaces. The modified porous membrane is stable, non-dewetting, and retains its mechanical strength.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: July 29, 2014
    Assignee: Entegris, Inc.
    Inventors: Jijun Ge, Alketa Gjoka, Jieh-Hwa Shyu
  • Publication number: 20140202123
    Abstract: A filter element has a multi-layered filter medium web with several layers that is folded along folding lines. The filter medium web has at least one functional region in at least one section located between adjacent folding lines. The at least one functional region is a first embossment. The layers of the filter medium web are firmly bonded to each other along the first embossment. A device for folding a multi-layered filter medium web has an energy-introducing embossing unit that embosses the filter medium web fed by a feed unit to the embossing unit. A folding unit for folding the filter medium web along folding lines is provided. The energy-introducing embossing unit embosses and firmly bonds the layers of the filter medium web along at least one functional region in at least one section of the filter medium web located between adjacent folding lines.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Applicant: MANN+HUMMEL GMBH
    Inventors: Stefan Walz, Mario Keller
  • Publication number: 20140197095
    Abstract: The invention relates to a multi-layer cleanable filter material for gas and liquid filtration, said filter material comprising a filter layer and a substrate layer that follows the filter layer in the flow direction, wherein the filter layer is substantially dendrite-free and consists of a melt-blown fleece made of elastic polymer fibres that has a breaking elongation of at least 100%.
    Type: Application
    Filed: February 9, 2012
    Publication date: July 17, 2014
    Applicant: NEENAH GESSNER GmbH
    Inventors: Andreas Demmel, Ingrid Meyr, Bernd Klausnitzer
  • Patent number: 8757394
    Abstract: A filter element (1) has first and second end sections (3A, 3B) of a flat filter medium which are secured to one another. A sheathing (4) is provided, wherein said sheathing is compressed by the end sections (3A, 3B) and surrounds the end edges (9) of the end sections (3A, 3B). Alternatively, the filter element (1) has first and second end sections (3A, 3B) of a flat filter medium, wherein the first end section (3A) has a fold (5) having two fold legs (6A, 6B). The end section (3B) of the second end section (2B) is then compressed between the fold legs (6A, 6B).
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: June 24, 2014
    Assignee: Mann +Hummel GmbH
    Inventors: Michael Maier, Martina Bachfischer
  • Patent number: 8746462
    Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side (104). Filter medium sections (120) extend on either side of the raw-side pleat tips (102a) to adjoining raw-side pleat bases (103a) include a first bend (552) toward the raw side (105), and behind that a second bend (554) toward the clean side (104). A plurality of elongated depressions (656) are formed on the raw side (105), which extend between pleat tips (102a) and pleat bases (103a) approximately perpendicular to pleat edges (F) and implement corresponding elevations (658) on the clean side (104) such that, in a raw-side pleat intermediate space (148a), in each case, two depressions (656) on the two medium sections (120) delimiting the pleat intermediate space (148a) are located directly opposite of each other and each form a flow channel (660).
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: June 10, 2014
    Assignee: Mann + Hammel GmbH
    Inventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
  • Patent number: 8741018
    Abstract: An air filter cartridge is provided including an air filter media construction having a first, outlet end, flow face and an opposite, second, inlet end, flow face. The filter media construction has fluted media secured to a facing media sheet. The filter media is closed to flow of unfiltered air completely therethrough. A centerboard is provided. The centerboard has a media portion embedded within the media construction. The centerboard has first and second opposite sides. The media portion that is embedded within the media defines an aperture arrangement extending completely through the centerboard from the first side to the second side. An adhering sealant secures the centerboard to the media construction. At least some adhering sealant extends through the aperture arrangement.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: June 3, 2014
    Assignee: Donaldson Company, Inc.
    Inventors: Mark Belcher, Matthew A. Kalis
  • Patent number: 8739976
    Abstract: A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: June 3, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Kenichi Ishizuka, Nobuhiro Nishita
  • Publication number: 20140110354
    Abstract: Disclosed is composite media that may be utilized in coalescing elements, coalescing cartridges, coalescing systems, and coalescing methods. The disclosed media typically is a composite or laminate material formed by bonding adjacent layers of media material comprising bicomponent fibers.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 24, 2014
    Applicant: Cummins Filtration IP, Inc.
    Inventors: William C. Haberkamp, Eric A. Janikowski, Kyle Ellison, Barry Mark Verdegan, Christopher E. Holm
  • Publication number: 20140083927
    Abstract: A filter element for purifying a fluid at risk of freezing such as a urea-water solution for exhaust gas after treatment has an annular filter body and a support body surrounded by the filter body. The support body is made of an elastomer and is able to yield in a radial inward direction to compensate volume expansion when the fluid freezes.
    Type: Application
    Filed: March 5, 2013
    Publication date: March 27, 2014
    Applicant: MANN+HUMMEL GMBH
    Inventors: Frank Pflueger, Yashwant Udachan
  • Publication number: 20140061120
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Application
    Filed: July 29, 2013
    Publication date: March 6, 2014
    Applicant: DONALDSON COMPANY, INC.
    Inventors: Kevin Schrage, Eugene Lensing, Donald Mork, Troy Murphy, Jeff Rahlf, Gregory Reichter, Daniel Risch
  • Publication number: 20140014572
    Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side (104). Filter medium sections (120), which extend on either side of the raw-side pleat tips (102a) to adjoining raw-side pleat bases (103a), include a first bend (552) toward the raw side (105), and behind that a second bend (554) toward the clean side (104), in each case viewed from the raw-side pleat tips (102a).
    Type: Application
    Filed: July 9, 2013
    Publication date: January 16, 2014
    Inventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
  • Patent number: 8627964
    Abstract: A filter device for filtration of fluid has a filter element of a zigzag-folded filter medium that is flowed through in a radial direction of the filter element. An additive for functional change of fluid properties of the fluid to be filtered in the filter device is provided. The additive is applied circumferentially on the filter element onto outwardly positioned fold tips of the zigzag-folded filter medium of the filter element.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: January 14, 2014
    Assignee: Mann+Hummel GmbH
    Inventor: Eugen Koch
  • Publication number: 20140008285
    Abstract: A cylindrical pleated filter of charged layer membrane filter material is constructed with minimized filter occlusion and surface area where the filter diameter, a number of filter pleats and pleat width results in the outer pleat apex included angle of each pleat being at least 10-degrees. Other embodiments and the relationship between filter occlusion and performance of a cylindrical pleated filter of charged layer membrane filter material and filter diameter, number of filter pleats and pleat width is part of this disclosure.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 9, 2014
    Applicant: IN-TEC WATER PRODUCTS, LLC
    Inventors: JOHN E. NOHREN, JR., Brad Mierau
  • Publication number: 20140004595
    Abstract: Polyethyleneimine and polyalkylene biguanide ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 2, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kannan Seshadri, Jerald K. Rasmussen, Clinton P. Waller, Jr., Douglas E. Weiss, Yi He
  • Publication number: 20130306547
    Abstract: Pleated filtration media and filtration devices generally include a filter media radially disposed about the annular perforated inner core, the filter media comprising a plurality of circumferentially disposed linear pleats extending from the inner core to a constant height (h) defined by an outer diameter; and one or more intermediate pleats circumferentially disposed between adjoining linear pleats, wherein each one of the intermediate pleats has a height less than the constant height, and wherein the height of the intermediate pleats progressively decreases in a clockwise or a counter clockwise direction. Also disclosed are methods for increasing surface area of a pleated filtration media.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 21, 2013
    Applicant: LYDALL, INC
    Inventor: DOUGLAS A. D. NORRIS
  • Publication number: 20130233789
    Abstract: High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve an overall filtration efficiency at 4 microns of 95% or higher and a ratio of filtration capacity to media caliper of 0.5 mg/in2/mils and greater. The filtration media is made by forming a wet laid sheet from a fibrous slurry blend of the synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, followed by drying the sheet to obtain the filtration media. Optionally, the filtration media may be provided with a resin binder and may be grooved and/or pleated.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Inventor: Ina PARKER
  • Patent number: 8524075
    Abstract: A fluid pressure vessel has a filter cartridge with spaced headers positioning cylindrical pleated filter media. The headers form an inlet chamber communicating with the inlet upstream side of the filter media and an isolated outlet chamber communicating with the downstream side of the filter media. A hollow piston with a toothed periphery having a circumferential slot is positioned closely adjacent the upstream side of the filter media. The piston hollow communicates with a drain chamber isolated from the inlet and outlet chambers. Upon opening of the drain chamber to atmospheric pressure, the pressure in the piston hollow and slot causes a lower pressure in a localized area of the media and back flushing of trapped material on the upstream side of the media to the drain chamber. An actuator is connected to selectively progressively move the piston and slot along the entire surface of the media.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 3, 2013
    Assignee: Eaton Corporation
    Inventor: Mark Anthony Quintel
  • Publication number: 20130199992
    Abstract: Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.
    Type: Application
    Filed: January 10, 2013
    Publication date: August 8, 2013
    Applicant: Donaldson Company, Inc.
    Inventor: Donaldson Company, Inc.
  • Publication number: 20130193075
    Abstract: Asymmetric membranes comprising a first asymmetric porous zone including a first porous asymmetry that increases from the first exterior surface through the first porous zone of the bulk, and a second asymmetric porous zone including a second porous asymmetry that increases from the second exterior surface through the second porous zone of the bulk, wherein the first average pore size is larger than the second average pore size, as well as methods of making and using the membranes, are disclosed.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Applicant: Pall Corporation
    Inventors: Xuemei Liang, Mark Murla, Binbing Han, Donald Simonton, Richard Morris
  • Publication number: 20130193063
    Abstract: The present invention provides a novel nonwoven felt fabric, which is made of at least one low-melting-point short fiber and at least one high-melting-point short fiber of same type or different types, wherein the fabric is stiff enough to be self-sustaining and have the ability of shape maintenance. The felt fabric exhibits excellent pleatability, moldability and compressive strength. The invention also provides a method for producing the felt fabric, and a filter comprising the felt fabric used as the material of a filter medium of the filter, wherein the filter medium requires no support structure to stand alone and persistently retains its shape.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 1, 2013
    Inventors: Ying Yuk Ng, Gilbert Craig
  • Publication number: 20130174527
    Abstract: A three-dimensional filter includes a filter frame having a three-dimensional skeletal structure with a filter media connected to the skeletal structure. The filters are nestable. The skeletal structure may be trimmed and provided with walls to create standard sized filters. Methods for making the three-dimensional filter include injection molding of the skeletal structure onto the filter media, injection molding the filter media and the filter frame together in a single molding process, thermoforming a molded or extruded skeletal structure and the filter media, and needle punching a molded or extruded skeletal structure to create filter media within the skeletal structure.
    Type: Application
    Filed: September 21, 2012
    Publication date: July 11, 2013
    Applicant: Diversitech Corporation
    Inventor: Diversitech Corporation
  • Publication number: 20130146529
    Abstract: The invention relates to a filter material for fluids, in particular hydraulic fluids, comprising a single- or multi-layered filter medium (6) and a supporting structure which rests flatly on the at least one side thereof and consists of at least one individual fabric (10, 12) made of warp threads (28) and weft threads (32). Said filter material is characterized in that at least one set of warp threads (28) and/or weft threads (32) overlaps three or more adjacent warp threads (28) and/or weft threads (32) while forming a long-float weave.
    Type: Application
    Filed: May 27, 2011
    Publication date: June 13, 2013
    Inventors: Matthias Schwender, Andreas Schmitz, Edwin Koch
  • Publication number: 20130140227
    Abstract: A filter element (1) having at least one inner (12) and an outer casing body (11), of which at least one casing body (12) has a cross section deviating from circularity and which have contact surfaces (20, 21) facing one another for the contact of essentially all filter folds (18a-18f, 18I-18II) of a pleated filter web (10), the filter folds (18a-18f, 18I-18II), in terms of fold height (h), being divided into individual groups (I, II) each having several filter folds (18I, 18II) of a common fold height (hmax, hmin) alongside one another in sections, is characterized in that between two adjacent filter folds (18a-18f, 18I-18II) of different groups (I, II) are arranged filter folds (18b-18e; 18m) of at least one further third group (Ill), the filter folds (18b-18e, 18m) assigned to the third group (III), in the manner of step formation, have a common fold height (ho) which is different from the respective fold height (hmax, hmin) of the filter folds (18I, 18II) of the two adjacent neighbouring groups (I, II), a
    Type: Application
    Filed: September 6, 2011
    Publication date: June 6, 2013
    Inventors: Gerhard Stehle, Dirk Schonfeld
  • Patent number: 8453848
    Abstract: A liquid filter cartridge is provided. Preferred seal arrangements are provided, to provide for preferred axial load conditions, with respect to one or more of the end caps of the cartridge. Some cartridge configurations provided include no core structure or outer liner structure therein, to support axial load. Assemblies using the cartridge, and methods of assembly and use, are provided. The liquid filter cartridge can be a serviceable cartridge, or it can be retained permanently in a housing.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: June 4, 2013
    Assignee: Donaldson Company, Inc.
    Inventor: John Hacker
  • Patent number: 8454829
    Abstract: The present disclosure describes a spiral cross-flow filter. The spiral cross-flow filter includes a filter element having a continuous web of leaves formed by pleating a laminate filter element. The filter element may include a composite filter material including a first layer of a membrane material adjacent an outer shell, and a second layer of a permeate spacer material adjacent a permeate tube. The plurality of leaves wrap around the permeate tube in a uniform “spiral” configuration and may be separated by feed spacers.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: June 4, 2013
    Inventor: Scott P. Yaeger
  • Publication number: 20130118974
    Abstract: A filter element includes filter media, first and second end caps, a latch arrangement projecting from the first end cap, a tubular neck extending from the first end cap and a valve head oriented within the first end cap aperture constructed and arranged to move between a position sealing the first end cap aperture and exposing the first end cap aperture. A filter assembly includes a filter element, as characterized herein, and including a filter base and a service cover. A method of servicing includes removing an old filter element, operably mounting a new filter element in a filter base including engaging a valve head against a spring member in the filter base, and operably mounting the service cover over the new filter element and filter base.
    Type: Application
    Filed: January 2, 2013
    Publication date: May 16, 2013
    Applicant: Donaldson Company, Inc.
    Inventor: Donaldson Company, inc.
  • Patent number: 8439204
    Abstract: A drop-in oil filter having top and bottom caps having annular recesses on facingly disposed surfaces adjacent their outer periphery, a pleated, woven metal cylindrical filter element having an outer and an inner diameter, a first cylindrical wire cage over the outer diameter of the filter element, a second cylindrical wire cage within the inner diameter of the filter element, ends of the filter element and the first and second cylindrical wire cages being fastened into the annular recesses in the top and bottom caps, the bottom cap having a first opening there through concentric with and within inner diameters of the filter element and the first and second cylindrical wire cages, and a first elastic grommet within the first opening having a central opening for sealing on a tube within a drop-in filter housing.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: May 14, 2013
    Assignee: Pure Power! Incorporated
    Inventor: Kelly Tidwell
  • Patent number: 8414766
    Abstract: A serviceable device for filtering lubricating oil includes an inlet and an outlet, a first filtering element and an absorption filtering element. The absorption filtering element is configured to absorb a fluidic contaminant present in the lubricating oil when in contact with the absorption filtering element. A flow path for the lubricating oil is from the inlet, through the first filtering element, and out the outlet. The flow path further includes lubricating oil contact with the absorption filtering element.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: April 9, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Gregory Mordukhovich, James L. Linden, Andrew M. Mance