Concentric Filter Elements Patents (Class 210/338)
  • Patent number: 10400147
    Abstract: A method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. The method fulfills the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 ?m is 50% or more.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 3, 2019
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
  • Patent number: 10343931
    Abstract: In one example, a fluid container includes a reservoir that includes a reservoir wall. A cover is configured to engage the reservoir, and the cover includes a spout configured and arranged for fluid communication with the reservoir, and the spout is disposed at one end of the cover. The fluid container also includes a filter cage configured to releasably engage the cover in a location near the spout. When the filter cage is engaged with the cover, and the cover is disposed on the reservoir, a small gap is defined between the front of the spout and the front of the filter cage.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: July 9, 2019
    Assignee: Brita LP
    Inventors: Nikhil P. Dani, Edward B. Rinker, Russell Bell
  • Patent number: 10046981
    Abstract: The present disclosure concerns a filter device for filtering source water for the purpose of obtaining potable water; and further concerns a method for assembly of such a device.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: August 14, 2018
    Assignee: STRAUSS WATER LTD.
    Inventors: Haim Wilder, Eyal Krystal, Stanislav Ratner, Hella Frenkel
  • Patent number: 10029199
    Abstract: The disclosure concerns air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary filter cartridge is shown. Preferred methods of assembly and use are provided.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 24, 2018
    Assignee: Donaldson Company, Inc.
    Inventors: James R. Scott, Carolyn Finnerty, Steven Gieseke, Douglas Iddings, William Juliar, Gregory LaVallee
  • Patent number: 9938155
    Abstract: To provide a method for producing an alkali silicate aqueous solution containing a reduced amount of foreign substance of plate-like fine particles and a method for producing a silica sol containing a reduced amount of foreign substance of plate-like fine particles. A method for producing an alkali silicate aqueous solution fulfilling the following condition: the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 ?m and a thickness of 1 to 100 nm is determined to be 0 to 30%. The method for producing an alkali silicate aqueous solution includes the steps of adjusting a silica concentration of an alkali silicate aqueous solution to 0.5 to 10.0% by mass and filtering the alkali silicate aqueous solution through a filter having a removal rate of particles with a primary particle size of 1.0 ?m of 50% or more.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: April 10, 2018
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Kiyomi Ema, Noriyuki Takakuma, Tohru Nishimura, Naoki Kawashita, Kouji Yamaguchi
  • Patent number: 9776108
    Abstract: The present inventions relate to water and wastewater treatment devices including stationary cloth filter media support structures which support structures also form the effluent plenum for the filtered influent.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: October 3, 2017
    Assignee: AQUA-AEROBIC SYSTEMS, INC.
    Inventors: Peter G. Baumann, Lloyd W. Johnson, David Smith, Eugen O. Bergmann
  • Patent number: 9764288
    Abstract: In accordance with aspects and embodiments, a filtration system is provided comprising a membrane module comprising an upper header and a lower header, a plurality of hollow fiber membranes having an upper end potted in the upper header and a lower end potted in the lower head, a cage at least partially surrounding the plurality of hollow fiber membranes, and a screen in contact with and surrounding the cage, the filtration system further comprising an aeration cap coupled to the lower header of the membrane module. The screen may protect the hollow fiber membranes from damage from coarse contaminants contained in the feed liquid, may improve module integrity, and may improve the efficiency of the filtration system.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 19, 2017
    Assignee: Evoqua Water Technologies LLC
    Inventors: Warren T. Johnson, Thomas W. Beck, Fufang Zha, Zhiyi Cao, Jessica Stiller, Bruce Biltoft
  • Patent number: 9670888
    Abstract: One embodiment is a filter element including an outer filter media and an inner filter media. The outer filter media is operable to remove particulates present in a flow of fluid and/or coalesce water contained in the flow of fluid. The inner filter media is operable to remove particulates from the flow of fluid, separate water form the flow of fluid, and remove particulates from the flow of fluid. Other embodiments include unique apparatus, devices, systems, and methods relating to fuel filters and filtration. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present application shall become apparent from the detailed description and figures included herewith.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 6, 2017
    Assignee: CUMMINS FILTRATION IP, INC.
    Inventors: Zemin Jiang, Melvin Douglas McCormick, David P. Genter, Norman C. Blizard, Jeffrey A. Husband, Michael J. Connor, Wassem Abdalla, Barry M. Verdegan
  • Patent number: 9126128
    Abstract: There is disclosed a material for separating a liquid from a mixture of at least two liquids, for example, for separating water from fuel. In one embodiment, the material comprises a fibrous substrate and carbon nanotubes, both of which have at least one functional group attached thereto. There is also disclosed a method for separating one liquid from another liquid using the disclosed material. In one embodiment, the method comprises flowing a mixture of liquids through the disclosed material, and either coalescing or separating at least one liquid by use of the carbon nanotubes.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: September 8, 2015
    Assignee: Seldon Technologies, Inc.
    Inventors: Vardhan Bajpai, Christopher H. Cooper
  • Patent number: 8961791
    Abstract: The present relates to a molecular exchange device. In particular, the present invention relates to a molecular exchange device comprising an outer tube extending from an approximal end to a distal end of the device; an inner tube defining at least one fluid passageway, the inner tube positioned concentrically within the outer tube and the area between the inner and the outer tube defining at least one fluid passageway; and a projection positioned within the area between the inner and the outer tube, wherein the projection prevents displacement of the inner tube with respect to the outer tube.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: February 24, 2015
    Assignee: Probe Scientific Limited
    Inventors: Mark Thomas O'Connell, Stewart Jeffrey Block, Rodney Ruston
  • Patent number: 8945388
    Abstract: A filter has first and second filter media (2, 3). The filter media define a flow space (4) between them receiving a device (5) for separation and flow guidance and dividing the flow space such that a functional space (25, 26) is disposed adjacent to the first or the second filter medium. The first filter medium (2) defines a hollow space (21) toward the outside, and the second filter medium (3) defines a hollow space (22) toward the inside. Each of the hollow spaces (21, 22) can be connected to at least one fluid duct (23, 24). The flow space (4) including the two functional spaces (25, 26) can be connected to at least one further fluid duct (27) that is separated in a fluid-tight manner from the other fluid ducts (23, 24).
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 3, 2015
    Assignee: Hydac Filtertechnik GmbH
    Inventor: Markus Dewes
  • Patent number: 8932465
    Abstract: A filter within a filter cartridge design is described that includes a sealing structure on an endplate of an outer filter element. Generally, the sealing structure includes an annular flange on the endplate that can directly seal against an interior surface of a housing when the filter cartridge is assembled for use. During filtration, the annular flange prevents a working fluid from bypassing the outer filter element. The sealing flange can seal with the housing in a press fit engagement.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: January 13, 2015
    Assignee: Cummins Filtration IP Inc.
    Inventors: Aaron M. Wells, Terry W. Shults, Ismail C. Bagci, Dean Olson, Zemin Jiang, Kevin C. South, Peter K. Herman, Hendrik N. Amirkhanian, Jeffrey B. Sharp, David P. Genter, Norman C. Blizard, Melvin Douglas McCormick, Jeffrey A. Husband, Wassem Abdalla, Michael J. Connor, Barry M. Verdegan, Donna Butler, Chad T. Brummitt
  • Patent number: 8911523
    Abstract: A water separating container for a motor vehicle is provided. An air stream sucked in from outside the vehicle passes through the water separating container, which separates water present in the air stream. The water separating container includes an air inlet having an air inlet opening and an air outlet having an air outlet opening. An impact wall for separating the water present in the air stream is disposed between the air inlet and the air outlet.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 16, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Guenther Marx, Helmut Nitzsche, Guenter Boersch
  • Patent number: 8813356
    Abstract: A common mode filter is manufactured to include a coil part including an insulation layer and a conductor pattern formed in the insulation layer; and a magnetic substrate coupled to one surface or both surfaces of the coil part. The magnetic substrate includes: an electrostatic absorbing layer made of an electrostatic absorbing material; a magnetic layer provided on one surface or both surfaces of the electrostatic absorbing layer and made of a magnetic material; and an electrode provided between the magnetic layer and the electrostatic absorbing layer and made of a conductive material. Therefore, common mode filter may maintain high efficiency characteristics while preventing an electrostatic discharge phenomenon.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: August 26, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Kwon Wi, Jeong Bok Kwak, Sang Moon Lee, Young Seuck Yoo, Yong Suk Kim
  • Patent number: 8807345
    Abstract: A device, method, and system for analyzing aggregate are described. An exemplary device may include a housing with one or more grading screens. Aggregate and liquid may be received by a port within the housing. The liquid and any suspended fines, after passing through the one or more grading screens and aggregate, may be received into an observation container for observing the clarity of the liquid.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: August 19, 2014
    Assignee: Presby Patent Trust
    Inventor: David W. Presby
  • Publication number: 20140217007
    Abstract: The present invention provides a filtering apparatus with a hollow membrane module for draining off debris, comprising: an outer shell having a filtering chamber, a water outlet and a first passage; a filter unit inside the filtering chamber of the outer shell and comprising a hollow membrane module and a sleeve mounted on the hollow member module; wherein the sleeve comprises a plurality of through-holes and two end caps attached onto two lateral sides thereof respectively; and a cover on the outer shell and comprising a second passage. Therefore, when the cover is fastened onto the outer shell, the outer shell is clamped onto the two end caps on the filter unit and the perforations of the two end caps arranged corresponding to the first and second passages such that the draining off debris and dirt off the filtering apparatus via either the first or second passage thereof is achieved.
    Type: Application
    Filed: February 6, 2013
    Publication date: August 7, 2014
    Inventor: HSIN TIEN CHIU
  • Patent number: 8758612
    Abstract: Process and device for separating liquid from a multiphase mixture contained in a vessel and comprising solid particles and at least one liquid phase forming together at least one suspension, and a gas phase in which at least part of the mixture is circulated through at least one cross-flow filter located outside the vessel, therefore separating said part of the mixture into a filtered liquid and a concentrate.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 24, 2014
    Assignee: Solvay SA
    Inventors: Jal Rustom Dadabhoy, Massimo Fedeli, Patrick Markus Dhaese, Yvan Frans Van Hoof
  • Patent number: 8753510
    Abstract: A fluid pressure vessel has a chamber with an inlet and outlet with a nested primary and secondary filter bag disposed such that the primary bag communicates exclusively with the inlet, and flow through the primary bag flows through the secondary bag before the outlet. The primary bag is disposed in a first rigid porous basket and the bag rim seals against a flange on the first basket. The secondary filter bag surrounds the first basket and the rim of the secondary bag is sealed around the flange of first basket. A second rigid porous basket surrounds the secondary filter bag and is sealed on the rim of the secondary filter bag and is sealed against the inner periphery of the pressure chamber by an O-ring.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: June 17, 2014
    Assignee: Eaton Corporation
    Inventors: Richard Bradley Jacobs, Mark Anthony Quintel, Derek Ronald Thelen, Christopher Scott Rau, David Jay Taubenslag
  • Patent number: 8714167
    Abstract: A dishwasher is provided that effectively cleans a filter. The dishwasher may include a rack positioned in a washing space and at least one nozzle that directs washing fluid into the washing space, a sump that receives washing fluid to be supplied to the washing space, and a filter device provided in the sump, including a first filter and a second filter. A driver rotates the first filter or the second filter so as to separate foreign materials from the filter device and prevent the filter device from clogging.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 6, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sangheon Yoon, Moonkee Chung
  • Publication number: 20140069874
    Abstract: An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate may be fixed with an outer enclosure and may be adapted for securing to the machine. The mounting plate may be further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve may be fixed fluidly between the peripheral portion and central portion of the outer enclosure. Oil may pass through the pressure-actuated valve only when an oil pressure differential between the peripheral portion and the central portion of the outer enclosure exceeds a predetermined threshold pressure.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 13, 2014
    Applicant: 37 DEGREE FILTERS INC
    Inventor: Christopher M. Hubbard
  • Patent number: 8652327
    Abstract: A fluid filter providing several degrees of filtering is designed to be receivable in a filter container that is closable by a cover. The filter itself includes both an annular main filter element, through which fluid to be filtered can pass radially to undergo primary filtration, and a supplemental filter element, to which fluid discharged from the main filter element passes to provide supplemental filtration additional to the primary filtration. The main filter element, the supplemental filter element, or both may be oblong or circular in cross section. At least one of a pair of end caps disposed on opposed ends of the main filter element carries the supplemental filter element as well as one end of the main filter element. That end cap may or may not be permanently secured to the one filter element end.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: February 18, 2014
    Assignee: MANN+HUMMEL Purolator Filters LLC
    Inventor: Daniel Lucas
  • Patent number: 8641892
    Abstract: Debris adhering to the outer surface of a barrel-type fish screen is cleared by air bursts from a series of perforated air pipes positioned inside the outer foraminous shell of the screen, the perforations being holes with axes at an acute angle to the screen radius for efficient use of the air. Separately, the conical water collection manifold mounted inside the shell is open at its narrow end, with a valve mounted to that open end to control the opening. The opening prevents reduced water inflow at that end of the manifold, and the valve adjusts the access of the surrounding water to the opening, thereby allowing the manifold to be tuned to more closely approach a uniform distribution of axial water flow along the length of the collection manifold for different ambient conditions.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: February 4, 2014
    Inventors: John L. Winther, Blake Andrew Toland
  • Publication number: 20140008286
    Abstract: One embodiment is a filter element including an outer filter media and an inner filter media. The outer filter media is operable to remove particulates present in a flow of fluid and/or coalesce water contained in the flow of fluid. The inner filter media is operable to remove particulates from the flow of fluid, separate water form the flow of fluid, and remove particulates from the flow of fluid. Other embodiments include unique apparatus, devices, systems, and methods relating to fuel filters and filtration. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present application shall become apparent from the detailed description and figures included herewith.
    Type: Application
    Filed: September 5, 2013
    Publication date: January 9, 2014
    Applicant: CUMMINS FILTRATION IP, INC.
    Inventors: Zemin Jiang, Melvin Douglas McCormick, David P. Genter, Norman C. Blizard, Jeffrey A. Husband, Michael J. Connor, Wassem Abdalla, Barry M. Verdegan
  • Patent number: 8622221
    Abstract: A filtering device (100) for plastic melts exhibits at least one screen plunger (10) arranged movably between an inlet channel (5) and an outlet channel (6) of a housing (1) and containing replaceable, three-dimensional filter elements (25). The inside of the filter elements (25) is connected to at least one melt channel (11, 12) formed in the screen plunger (10). The melt channel is connected to the inlet or outlet channel (5, 6) of the housing (1) when in the production position. The screen plunger (10) exhibits at least one receiving chamber (14) that can be closed using a cover (16) on the face side. Several filter elements (25) are bundled with a central distribution element (20) to a filter cartridge (30) that can be placed in the receiving chamber (14).
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: January 7, 2014
    Assignee: Kreyenborg GmbH
    Inventors: Frank Hartmann, Michael Andress
  • Patent number: 8590712
    Abstract: Disclosed are modular filter-in-filter elements, namely an outer filter element and an inner filter element which may be assembled to form a filter cartridge for use in separation methods and systems. The outer filter element typically functions as a coalescing element and the inner element typically functions as a particulate filter element. The disclosed filter cartridges may be structured for separating water from a hydrocarbon-based liquid fuel as the fuel moves through the cartridge from outside to inside.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 26, 2013
    Assignee: Cummins Filtration IP Inc.
    Inventors: Mark T. Wieczorek, Terry Shults, William C. Haberkamp, Jonathan Sheumaker, Barry M. Verdegan, Christopher E. Holm, Brian W. Schwandt
  • Publication number: 20130299414
    Abstract: A hydraulic filter may include a ring-shaped full-flow filter and a partial-flow filter arranged coaxially inside the full-flow filter.
    Type: Application
    Filed: October 31, 2011
    Publication date: November 14, 2013
    Applicant: Mahle International GmbH
    Inventors: Achim Kress, Albert Schick
  • Patent number: 8551335
    Abstract: A dual stage filter includes an outer filter with a first media and an inner filter with a second media. A barrier is between the first media and the second media. The barrier directs fluid flow between the first and second media. The barrier creates a flow path between the first and second media, such that a working fluid, which is desired to pass through the first and second media, is directed by the barrier and flows through the second media, and such that another fluid, which is not desired to pass through the second media, is directed by the barrier and separates from the working fluid. Using the barrier, the dual stage filter can employ either or both upward flow and downward flow to achieve efficient fluid separation, for example fuel water separation in an engine fuel filter.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: October 8, 2013
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Mark T. Wieczorek, Arnaud LeVen, Jean-Luc Guichaoua, Jean-Yves Picard, Gerard Malgorn, Terry W Shults, Barry M. Verdegan
  • Patent number: 8524090
    Abstract: A flexible blood filter allowing smooth flow of a liquid and being excellent in separation resistance, pressure resistance and centrifugation resistance. The blood processing filter, comprising a first filter element for removing aggregates from blood, a second filter element for removing leukocytes provided in the downstream of the first filter element, and the third filter element having gas permeability of 3 to 40 cc/cm2/sec per thickness of 1 cm provided between the second filter element and the outlet port side container.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: September 3, 2013
    Assignee: Asahi Kasei Medical Co., Ltd.
    Inventors: Shin-ichiroh Oka, Yoshimasa Matsuura, Tomohisa Yokomizo
  • Patent number: 8517185
    Abstract: A water separator and particulate filter with a first or outer stage configured to coalesce water from fluid such as fuel, and a second or inner stage configured to separate coalesced water from the fluid and also remove fine solid contaminants from the fluid. The coalescing stage includes a pleated cylinder of polymeric media. The pleated cylinder has pleat valleys and downstream pleat tips, and release sites defined at the downstream pleat tips. The separator stage includes a non-pleated cylinder of polymeric media surrounding and in contact with outer pleat tips of a multi-layer pleated cylinder.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: August 27, 2013
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Mark Wieczorek, Terry Shults, William Haberkamp, Jonathan Sheumaker, Barry M. Verdegan, Christopher E. Holm, Brian W. Schwandt
  • Publication number: 20130213877
    Abstract: A fluid filter (1) includes an outer jug (11), an inner jug (12) and a filter cartridge (3); the inner jug (12) is installed at the top of the outer jug (11), and the filter cartridge (3) is installed in the bottom of the inner jug through the engagement of the protruding rib (35) of the filter cartridge and the fixing components (125) of the inner jug. The filter cartridge (3) may comprise an inner cavity (33) filled with a first filtering material and an outer cavity (34) filled with a second filtering material, such that when water flows into the filter cartridge (3), the water will flow through the first filtering material of the inner cavity (33) and the second filtering material of the outer cavity (34) in succession, thereby allowing the water that flows through the filter cartridge (3) to be filtered twice.
    Type: Application
    Filed: April 21, 2011
    Publication date: August 22, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Shin-Wei Lin, Sheng-Nan Lin
  • Patent number: 8470175
    Abstract: A fuel filter, such as a filter for filtering gasoline or diesel fuel to be supplied to an internal combustion engine, includes an annular main filter element through which fluid to be filtered can pass radially, and a supplemental fluid processing element disposed within the main filter element to which fluid discharged from the main filter element passes. The filter also has end caps, between which opposite ends of both the main filter element and the supplemental fluid processing element are disposed, and to which the opposite ends of both the main filter element and the supplemental fluid processing element are secured. Fluid is discharged from a central volume of the filter through one of the end caps.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: June 25, 2013
    Assignee: Purolator Filters NA LLC
    Inventor: Daniel Lucas
  • Patent number: 8440083
    Abstract: One embodiment is a filter element including an outer filter media and an inner filter media. The outer filter media is operable to remove particulates present in a flow of fluid and/or coalesce water contained in the flow of fluid. The inner filter media is operable to remove particulates from the flow of fluid, separate water form the flow of fluid, and remove particulates from the flow of fluid. Other embodiments include unique apparatus, devices, systems, and methods relating to fuel filters and filtration. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present application shall become apparent from the detailed description and figures included herewith.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: May 14, 2013
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Zemin Jiang, Melvin Douglas McCormick, David P. Genter, Norman C. Blizard, Jeffrey A. Husband, Michael J. Connor, Wassem Abdalla, Barry M. Verdegan
  • 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
  • Patent number: 8414767
    Abstract: A fluid purifying module including a monolithic container, a pretreatment filter, and a selectively permeable membrane treatment cartridge, respectively housed in an external cylindrical space and an internal cylindrical space of the container, communicating with each other via one or more passages in the vicinity of one axial end of the container. The external space communicates at the same end as the opposite axial end with a first connector orifice for feeding fluid to be purified to the pretreatment filter, and the internal space communicates separately, at the same end as the aforementioned axial end, with a second connector orifice for evacuating from the module a flow of permeate (purified fluid) and with a third connector orifice for evacuating from the module a flow of retentate (residual fluid).
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: April 9, 2013
    Assignee: EMD Millipore Corporation
    Inventors: Yves Gaignet, Denis Daulasim, Jacques Moulin
  • Patent number: 8388843
    Abstract: The present invention relates to a device having two or more separate filtration layers that can be independently tested for integrity yet which allow for serial filtration through the two or more layers to obtain the desired characteristics such as retention. The device is made of two or more filtration areas, each containing one filter layer. Each area has one filtration layer and a first endcap bonded to a first end of the filter and a second endcap bonded to a second end of the filter. The areas are arranged concentrically around each other such that the first area is inward of the second area which is inward of a third area and the like. Each area is formed separately and integrity tested separately before final assembly. The first area is slid into the inside of the second area and then the two endcaps are either bonded to each, bonded to a third overall endcap or overmolded by a third endcap.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: March 5, 2013
    Assignee: EMD Millipore Corporation
    Inventor: Kevin Rautio
  • Patent number: 8333890
    Abstract: A filter within a filter cartridge design is described that includes a sealing structure on an endplate of an outer filter element. Generally, the sealing structure includes an annular flange on the endplate that can directly seal against an interior surface of a housing when the filter cartridge is assembled for use. During filtration, the annular flange prevents a working fluid from bypassing the outer filter element. The sealing flange can seal with the housing in a press fit engagement.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: December 18, 2012
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Aaron M. Wells, Terry W. Shults, Ismail C. Bagci, Dean Olson, Zemin Jiang, Kevin C. South, Peter K. Herman, Hendrik Amirkhanian, Jeffrey B. Sharp, David P. Genter, Norman C. Blizard, Melvin Douglas McCormick, Jeffrey A. Husband, Wassem Abdalla, Michael J. Connor, Barry M. Verdegan, Donna Butler, Chad T. Brummitt
  • Patent number: 8329034
    Abstract: A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising anionic monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as monoclonal antibodies (MAb), from a fluid mixture.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: December 11, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Clinton P. Waller, Jr., Douglas E. Weiss, Catherine A. Bothof, Kannan Seshadri
  • Patent number: 8282825
    Abstract: A fluids filter is presented that is cylindrical in shape and can be adapted to fit inline with any pipe system. The filter is comprised of an outer solid cylinder and an inner cylinder possessing multiple filter means, including a replaceable fine mesh or material filter. An absorbent boom can be placed in the filter system to absorb hydrocarbons or other materials. The inner tube possesses an emergency bypass in case of flows through the pipe system exceeding rated levels.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: October 9, 2012
    Inventor: Greg Kent
  • Patent number: 8221632
    Abstract: A plate is positioned across an inlet to a catch basin and a filter strainer is inserted through an opening through the plate and into the basin. A tertiary filter completely surrounds the strainer and is suspended below the plate. Surface water flows through a primary grate that covers the catch basin, through the strainer and through the tertiary filter. The tertiary filter comprising fibrous filter media retained in a non-woven mesh fabric enclosure and the filter media is selected according to the type of contaminants that are to be removed.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: July 17, 2012
    Assignee: Cleanway Environmental Partners, Inc.
    Inventors: Stephen J. McInnis, Matthew E. Moulton
  • Patent number: 8216470
    Abstract: A filter cartridge is described that is designed to accommodate for example dual stage filtration. The filter cartridge has an endplate structure formed of a heat cured material, such as polyurethane, where at least one of the top end and the bottom end of the outer filter and the inner filter are embedded within the heat cured material. The heat cured material can provide an endplate structure that is convenient for manufacture and that has one or more sealing surfaces to seal with a housing that the filter cartridge is assembled with. For example, the heat cured material of the endplate can seal non-filtered fluid from filtered fluid that has passed through each of the filtration stages available in the cartridge.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: July 10, 2012
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Wassem Abdalla, Ricky England, Sainath R. Racha, Eric R. Burgan, Jeffrey A. Husband
  • Patent number: 8206585
    Abstract: An automatic oil-water separation and recovery device, which comprises a cylindrical tank, on the top of which exists an oil collector. The tank has an inflow pipe that links to a pre-separation regulating water distributor therein. The said water distributor is in the shape of an obconic bell mouth. At the lower part of the tank stands an outflow collector on which a bar-shaped oil-water separation unit is secured. The said outflow collector has an outlet. The said oil-water separation unit is made from stainless steel or plastic antipriming pipe firstly wrapped with unwoven cloth, and then taped with wires and outside the wires further wrapped with nonwoven cloth. All the cloth and wires are made of the same highly hydrophilic, oil-resistant material. The automatic oil-water separation and recovery devices described in this invention can be assembled together for separating and recovering ship-generated oily water.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: June 26, 2012
    Inventor: Xian Gan
  • Patent number: 8192624
    Abstract: The invention relates to a filtering apparatus in which improvement of maintenance of a driving system, reduction of the number of components, and ease of assembly are achieved.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: June 5, 2012
    Assignee: Tsukishima Kikai Co., Ltd.
    Inventors: Dai Takao, Motomi Ono, Kotaro Neo
  • Patent number: 8147693
    Abstract: A multi-layer filter including a first media layer surrounded by a second media layer, a third media layer surrounding the second media layer, and at least one retainer disposed between the first and second media layers or between the second and third media layers. The first, second and third media layers surround the central axis of the filter. The filter has multiple media layers in a compact package, providing increased media surface area which allows greater contaminant holding capacity, lower pressure drop, and lower face velocity.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: April 3, 2012
    Assignee: Cumins Filtration IP, Inc.
    Inventors: Brian J. Terry, Daniel M. Buckner, Barry M. Verdegan, John W. Clevenger, Jr., Ravi Yekula
  • Patent number: 8146662
    Abstract: A well screen assembly includes an elongate base pipe and a wire wrap layer. The wire wrap layer includes a wire wrapped around support ribs. The wire wrap layer has an axial end section wrapped at a first gage and an intermediate section wrapped at a second, larger gage. A mesh layer is provided around the wire wrap layer. An outer shroud is provided around the mesh layer, the outer shroud sealed to the wire wrap layer.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: April 3, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jacob Shoemate
  • Patent number: 8128829
    Abstract: Cross flow filter device comprising a longitudinal first filter element (1) having a first width (w1) and a longitudinal central axis (8), a longitudinal second filter element (2) having a second width (w2) and being longitudinally installed substantially concentrically inside said first filter element (1), a housing (3) surrounding said first filter element (1), said cross flow filter device having respectively a raw material inlet (4), a concentrate outlet (5), and a first filtrate outlet (6) connected to said first filter element (1). The ratio between the second width (w2) and the first width (w1) is 65%, preferably at least 70% and more preferably about 75%.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: March 6, 2012
    Assignees: Bekaert Advanced Filtration
    Inventors: Martin Eurlings, Philippe Albert, Stefan Vandendijk
  • Patent number: 8123942
    Abstract: A liquid filter assembly including a first liquid filter; a second different liquid filter element; a housing and a relief valve. The liquid filter assembly forms a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein. The first liquid filter element forms a mixing chamber in a center of the first liquid filter element for mixing the liquid filtered by the first liquid filter element and the liquid filtered by the second liquid filter element. The relief valve is configured to allow liquid to bypass the second liquid flow path to mix with liquid filtered by the first liquid filter element in the mixing chamber.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: February 28, 2012
    Inventor: Norbert M. Assion
  • Patent number: 8114291
    Abstract: A filter coalescer element for oil based industrial fuels includes a rigid, porous support tube, and a hydrophobic drainage layer covering the outer surface of the same. A single phase, dual function combination water coalescer and particle filter pleat block is positioned in the support tube, and is formed from a multilayer material having a first porous support layer, a synthetic microfiber layer, a synthetic fiber media layer and a second porous support layer. As the fluid passes through the pleat block, solid particles are physically filtered therefrom, and water is coalesced into droplets which pass from the pleats directly through the support tube and directly into the drainage layer, where the droplets grow into a size sufficient that they fall under gravity to the bottom of the element for collection.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: February 14, 2012
    Assignee: Kaydon Custom Filtration Corporation
    Inventors: Jason A. Ellis, Ron J. Garrett
  • Patent number: 8083941
    Abstract: An improved construction of filtration media of a wedge filter provides a performance on both surface and inner filtration mechanisms with offering many times recycled use by washable functions. Particularly a wedge filter plate is used to construct a hollow cylindrical type media of wedge filter.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: December 27, 2011
    Inventor: Huan-Jun Chien
  • Patent number: 8043504
    Abstract: A filter cartridge that is designed to accommodate differences in lengths between an outer filter media and an inner filter media by providing a flexible connection between the inner filter media and the outer filter media. In addition, the endplates of the inner filter and the outer filter together define a gasket groove that receives a gasket. Using the endplates of the inner and outer filter media to define the gasket groove eliminates a mold parting line that can lead to fluid leakage.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: October 25, 2011
    Assignee: Cummins Filtration IP, Inc.
    Inventor: GĂ©rard Malgorn
  • Patent number: 8034240
    Abstract: A filter element includes a cylindrical housing enclosing a ring-shaped filter media assembly. The media assembly includes inner and outer media rings, moveably supported relative to one another, to remove particulate matter and water from a fluid stream. The outer ring surrounds the inner ring and is sealed by a first seal to the housing. An end cap assembly at the upper end of the element includes an annular end cap piece attached to an upper end of the inner ring, a flat plate, and a threaded flange portion bounding the periphery of the plate. A second seal is provided between the upper end cap of the inner ring, and an upper end cap of the outer ring. The housing is secured to the media assembly by forming an open end of the housing around the flange portion.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: October 11, 2011
    Assignee: Parker-Hannifin Corporation
    Inventors: Cheryl M. Reiland, Walter H. Stone