Alternating Dissimilar Patents (Class 210/492)
  • Patent number: 10876443
    Abstract: The present invention relates to a filter device for filtration of oil, comprising a first filtration layer, a second filtration layer, and a frame element, wherein—the frame element is arranged in a sandwich-like manner between the first filtration layer and the second filtration layer, and wherein—the frame element has a multitude of passage orifices, such that a number of intermediate chambers corresponding to the multitude of passage orifices is formed between the first filtration layer and the second filtration layer, wherein the filter device is characterized in that the frame element comprises an oil-permeable filter medium, by means of which filtration of the oil passing therethrough is effected.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: December 29, 2020
    Assignee: IBS FILTRAN KUNSTSTOFF-/METALLERZEUGNISSE GMBH
    Inventor: Michael Dedering
  • Patent number: 9895634
    Abstract: Stackable screening plates (3) with radial screening apertures (10) are carried on a tubular shaft having an axial key. The plates have a choice of keyways (14, 15) allowing the plates to be stacked in alternate angular positions. Spring tongues (16) formed integrally with the plates provide uniform but adjustable mutual spacing.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: February 20, 2018
    Inventor: Frederick Philip Selwyn
  • Publication number: 20140208705
    Abstract: Filter media, filter elements, and method of forming filter media and filter elements are provided. The filter media and filter elements require filtered fluid to pass through filter media twice. The filter media and filter elements generally relate to fluted or similar style filter media. The filter media is formed from convoluted sheets coupled to face sheets to form first and second sets of flutes. At least one of the flute sets includes inlet and outlet seals and the other one of the flutes includes an intermediate seal interposed between the inlet and outlet seals of the other flute set. This forces the fluid to pass through the filter media at least twice.
    Type: Application
    Filed: January 20, 2014
    Publication date: July 31, 2014
    Applicant: BALDWIN FILTERS, INC.
    Inventor: Timothy L. Krull
  • Publication number: 20140183123
    Abstract: A hollow fiber membrane module including at least two types of hollow fiber membranes having different inner diameters, comprising first hollow fiber membranes and second hollow fiber membranes, and the equation |PA?P0?|PB?P0| where P0 is an initial pressure applied to upper open ends of the first and second hollow fiber membranes, and PA and PB are respective pressures at lower open ends of the first and second hollow fiber membranes.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 3, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Gyu Hong MIN, Fufang ZHA
  • Patent number: 8678202
    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: May 2, 2013
    Date of Patent: March 25, 2014
    Assignee: Cummins Filtration IP Inc.
    Inventors: Mark T. Wieczorek, Terry Shults, William C. Haberkamp, Jonathan Sheumaker, Barry Mark Verdegan, Christopher E. Holm, Brian W. Schwandt
  • 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
  • Patent number: 8584868
    Abstract: A filter medium for removing particles from a fluid flow has a pre-filter layer and a fine-filter layer joined to each other in the flow direction. A first supporting layer is attached to the unfiltered side of the pre-filter layer and a second supporting layer is attached to the filtered side of the fine-filter layer in order to absorb the longitudinal and transverse forces in the event of tensile loading. The traverse force absorbing layer has a greater bending stiffness in a traverse direction while the longitudinal force absorbing layer has a greater bending stiffness in a longitudinal direction.
    Type: Grant
    Filed: September 17, 2011
    Date of Patent: November 19, 2013
    Assignee: Mann+Hummel GmbH
    Inventors: Heiko Wyhler, Jochen Reyinger, Klaus Gehwolf
  • 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
  • Patent number: 8419933
    Abstract: A dialysis system includes a first fluid heater, a second fluid heater, a supplemental power source and a logic implementer. The logic implementer is configured to use the supplemental power source such that when the first and second heaters are powered simultaneously, a collective current draw does not exceed a maximum allowable current draw of a branch power source powering the system.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: April 16, 2013
    Assignees: Baxter International, Inc., Baxter Healthcare S.A.
    Inventors: Justin Rohde, William W. Han
  • Patent number: 8388840
    Abstract: Device for stiffening the plates of a multi-stage column with a diameter of more than 2 meters, whereby each plate supports a particle bed and the flow of at least one fluid passes through it from top to bottom, whereby said device consists of a number of beams that are located under the plate in question, each beam having a lower surface that is shaped like a triangle.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 5, 2013
    Assignee: IFP Energies Nouvelles
    Inventors: Frederic Augier, Denis Darmancier, Gerard Hotier
  • Patent number: 8372656
    Abstract: A hydrodynamic filter includes a first portion, and a second portion which is spaced apart from and faces the first portion. The first portion includes a plurality of protrusions protruding in a first direction, and the second portion includes a plurality of protrusions protruding in a second direction opposite to the first direction. A filtering apparatus including a body which includes a plurality of the hydrodynamic filters and filters a fluid including target molecules, an inlet portion in connection with the body, and an outlet portion in connection with the body.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minseok S. Kim, Taeseok Sim, Jongmyeon Park, Jeong-Gun Lee, Hun Joo Lee
  • Patent number: 8360251
    Abstract: Disclosed are coalescing media for coalescing a mixture of two phases, namely a continuous phase and a dispersed phase. The disclosed coalescing media has multiple layers with distinct porosities, where an interior layer of the coalescing media has a higher porosity than the layers immediately adjacent to the interior layer. The disclosed media may be utilized in coalescers, coalescing systems, or coalescing methods for removing the dispersed phase from the mixture.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: January 29, 2013
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Mark T. Wieczorek, Barry M. Verdegan, Saru Dawar
  • Patent number: 8220640
    Abstract: One embodiment is a replaceable filter cartridge including a plurality of stacked disks of filter media extending between a first endplate and a second endplate. A plurality of frame members extend axially between and connect the first endplate to the second endplate. The cartridge includes a compression assembly supported by the first endplate. The compression assembly includes at least one compression member operable to impart a compression force on said plurality of stacked disks of filter media thereby biasing said plurality of stacked disks of filter media in an axial direction toward the second endplate.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: July 17, 2012
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Kelly H. Schmitz, Gerard Malgorn
  • Patent number: 8216452
    Abstract: A dialysis system includes a first fluid heater, a second fluid heater, a supplemental power source and a logic implementer. The logic implementer is configured to use the supplemental power source such that when the first and second heaters are powered simultaneously, a collective current draw does not exceed a maximum allowable current draw of a branch power source powering the system.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: July 10, 2012
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Justin Rohde, William W. Han
  • Patent number: 8197687
    Abstract: A contaminant adsorption filter element is provided that includes a self-assembled monolayers on mesoporous supports (SAMMS) contained in a filter element having a plurality of pockets such as a fluted filter media. The plurality of pockets are filled with mesoporous material that is functionalized for a target contaminant. A method of making a filter element having mesoporous material filled flutes is also provided.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: June 12, 2012
    Assignee: Perry Equipment Corporation
    Inventors: John A. Krogue, Daniel M. Cloud
  • Publication number: 20120138540
    Abstract: A hydrodynamic filter includes a first portion, and a second portion which is spaced apart from and faces the first portion. The first portion includes a plurality of protrusions protruding in a first direction, and the second portion includes a plurality of protrusions protruding in a second direction opposite to the first direction. A filtering apparatus including a body which includes a plurality of the hydrodynamic filters and filters a fluid including target molecules, an inlet portion in connection with the body, and an outlet portion in connection with the body.
    Type: Application
    Filed: October 28, 2011
    Publication date: June 7, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Minseok S. KIM, Taeseok SIM, Jongmyeon PARK, Jeong-Gun LEE, Hun Joo LEE
  • Patent number: 8182685
    Abstract: A gas baffle for a waste water treatment plant filter housing that includes a first and second deflecting plate. The gas baffle has at least one flow-through opening defined by the first and second deflecting plates. The combination of the first and second deflecting plates deflects rising gas bubbles and any solid particulates so that the bubbles and particulates do not enter the filter housing. The gas baffle may include exterior apertures to dissipate the rising gas bubbles that travel on the bottom surface of each deflecting plate. The gas baffle may be integrally formed with the filter housing or created separately and subsequently connected.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: May 22, 2012
    Assignee: Bear Onsite, LLC
    Inventor: Theophilus B. Terry
  • Patent number: 8128824
    Abstract: A filter module comprises a non-filtrate draining spacer element, a filter layer, a filtrate draining spacer element, a filter layer, a non-filtrate draining spacer element, a filter layer, and a filtrate draining spacer layer stacked on one another in an axial direction, wherein at least some of the draining spacer elements comprise connecting means around the outer circumference to compress and seal off the filter layers between the draining spacer elements.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: March 6, 2012
    Assignee: Pall Corporation
    Inventors: Wolfgang Diemer, Martin Zeiler, Georg Schnieder, Gerhard Strohm
  • Patent number: 8075774
    Abstract: A gas baffle for a waste water treatment plant filter housing that includes a first and second deflecting plate. The gas baffle has at least one flow-through opening defined by the first and second deflecting plates. The combination of the first and second deflecting plates deflects rising gas bubbles and any solid particulates so that the bubbles and particulates do not enter the filter housing. The gas baffle may include exterior apertures to dissipate the rising gas bubbles that travel on the bottom surface of each deflecting plate. The gas baffle may be integrally formed with the filter housing or created separately and subsequently connected.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: December 13, 2011
    Assignee: Bear Onsite, LLC
    Inventor: Theophilus B. Terry, III
  • Patent number: 8061531
    Abstract: A membrane bag comprising a volume for permeate collection, wherein the volume is completely enclosed in seamless membrane substance; a filtration unit comprising at least one above-described seamless membrane bag; the use of at least one above-described seamless membrane bag in a membrane bioreactor; the use of at least one above-described seamless membrane bag in water filtration or waste water purification; and the use of at least one above-described seamless membrane bag for the filtration or separation of a mixture of fluids, vapors and particles.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: November 22, 2011
    Assignee: De Vlaamse Instelling voor Technologisch Onderrzoek (VITO) N.V.
    Inventors: Willem Mues, Bart Cobben, Wim Doyen, Walter Adriansens, Bart Molenberghs
  • Patent number: 7918996
    Abstract: The invention is a particle and sediment filter for stormwater. A long permeable filter bag is laid out horizontally within an enclosure. The bag is formed of at least two layers of parallel tubes that give each layer the pleated look of a typical air mattress. Stormwater is collected from the filter bag by perforated pipes held within the creases between the tubes of the layers of the bag, with the pipes draining to the outside of the enclosure. The bag is also supported above the bottom of the enclosure by additional perforated pipes located within the creases between the tubes, thus allowing the filtered liquid to also drain off beneath the bag. The stormwater input is from a pipe that feeds a manifold formed in the bag and connected to each tube. The top of the enclosure is removable for replacing the filter. The filter bags are constructed of flexible material so that they are flat during initial transport and installation, but they expand as they are filled with liquid and solid material.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: April 5, 2011
    Inventor: Hans de Bruijn
  • Patent number: 7635062
    Abstract: A composite article, in an exemplary embodiment, includes a porous membrane formed from a first material, a coating formed from a second material applied to at least a portion of the porous membrane, and a third material covering at least a portion of the porous membrane. The third material is substantially incompatible with the first material. The second material of the coating is compatible with the first material and the third material. The coating is positioned between the first material and the third material The third material is connected to the first material by the coating on the porous membrane.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: December 22, 2009
    Assignee: BHA Group, Inc.
    Inventors: Robert J. Klare, James DeYoung, James B. McClain
  • Patent number: 7470639
    Abstract: Nonwoven fabric laminates suitable for use as semipermeable membrane supports are produced by forming a spunbond nonwoven fabric first layer of continuous thermoplastic polymer filaments; forming a wet-laid nonwoven fabric second layer of discrete length thermoplastic polymer fibers; and bonding the first and second layers in opposing face-to-face relationship to form a composite support, where the first and second layers define first and second outer surfaces of the composite support. The resulting semipermeable membrane supports provide an advantageous balance of properties, including smoothness, porosity, interlaminar adhesion, and flux properties.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: December 30, 2008
    Assignee: Fiberweb, Inc.
    Inventors: Peter J. Angelini, Clement J. Haley
  • Patent number: 7442293
    Abstract: Oil adsorbent layers 4 and packed layers 5 are alternately laminated inside a treatment vessel 2, the oil adsorbent layers 4 comprise ten laminated flat sheets 4a composed of polypropylene, and gelled aluminum hydroxide 15 is evenly applied over the surface of each of these sheets 4a on the laminated side. These flat sheets 4a are lipophilic and hydrophobic.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 28, 2008
    Assignee: Jyonan Electric Industrial Corporation Limited
    Inventor: Kenichi Yokota
  • Patent number: 7407533
    Abstract: A filter element formed from at least one flat layer of permeable filter medium alternating with at least one pleated layer in such a way that the resulting channels have an open, especially triangular, cross section, a first group of channels being tightly sealed at one end and a second group of channels being tightly sealed at the other end such that a fluid to be filtered flowing through the filter element from an incident flow side formed by one end face to a discharge side formed by the opposite end face, must pass through one of the layers, and at least one group of channels is filled with adsorbent particles and closed by a gas-permeable fabric disposed over the corresponding end face of the filter element, the fabric pores being smaller than the adsorbent particles.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: August 5, 2008
    Assignee: Mann & Hummel GmbH
    Inventor: Oliver Steins
  • Publication number: 20080061009
    Abstract: An apparatus, system and method to facilitate fluid flow across a filter. The apparatus includes a filtration layer coupled to a support layer to form a composite filter. The support layer includes a hydroentangled cellulosic material forming a plurality of apertures. The apertures form channels to facilitate fluid flow across the filter while the support layer provides structural support to the filtration layer to enable lateral flow while preventing pleat deformation and collapse.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 13, 2008
    Inventors: Robert E. Muse, James O. Stuart
  • Patent number: 7311751
    Abstract: A filter medium includes at least a first and a second layer. Both first and second layers have a layer volume VLq and a layer filtering surface SLq, where SLq is the accumulation of all mantle surfaces of the fibers present in this layer q. The first layer has a SL1/VL1-ratio of less than 32500 m2/m3, and the second layer has a SL2/VL2-ratio being more than 1.1×SL1/VL1.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: December 25, 2007
    Assignee: NV Bekaert SA
    Inventors: Feng Mei, Willy Marrecau
  • Patent number: 7252764
    Abstract: The invention is a method for fabricating molecular filters which can separate objects approximately 1-5 nm in range, where the filtration size is controlled by using thin films of materials and technologies to form a filtration channel or pore in a middle thin film layer in a multilayered structure. Lithography is used to define two offset arrays of blind holes into the opposing sides of a multi-layer membrane. The blind holes extend across a thin central filtration layer. A selective etch is used to attack the filtration layer to form a communicating channel between the two holes. The only connection between one side of the filter and the other is through the channel in the filter layer, whose thickness, d, determines the largest size object which can traverse the filter.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: August 7, 2007
    Assignee: California Institute of Technology
    Inventor: Axel Scherer
  • Patent number: 7128772
    Abstract: A filter assembly through which a fluid can flow and a method for the production thereof are provided. The filter assembly includes at least one covering layer made of an at least partially porous material with at least one boundary region and includes at least one fiber layer made of a fiber fabric. The at least one covering layer forms a sleeve that encloses the fiber layer so that the fiber layer is permanently disposed inside the at least one covering layer. The filter assembly makes it possible to produce a filter body that can be used, in particular, for cleaning exhaust gases of mobile internal combustion engines.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: October 31, 2006
    Assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
    Inventor: Rolf Brück
  • Patent number: 7051883
    Abstract: Nonwoven fabric laminates suitable for use as semipermeable membrane supports are provided. The fabric laminates generally include at least two layers: a spunbond layer of continuous filament fibers and a wet-laid layer of discontinuous filaments. The resulting semipermeable membrane supports provide an advantageous balance of properties, including smoothness, porosity, interlaminar adhesion, and flux properties.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: May 30, 2006
    Assignee: Reemay, Inc.
    Inventors: Peter J. Angelini, Clement J. Haley
  • Patent number: 6953124
    Abstract: A filter element for end face inlet formed of triangular channels which are alternately closed such that the fluid to be filtered must pass through the filter material in order to flow from the inlet side (22) to the discharge side (23). The channels are formed by alternating flat layers (17) and folded layers (18), whereby all sides of the inlet channels face a discharge channel. A particularly high filter efficiency is thereby achieved such that a large filter surface area and a high filter capacity are attained with a relatively small structural volume. The filter can be used, for example, as an air filter for various air filtration applications.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: October 11, 2005
    Assignee: Mann & Hummel GmbH
    Inventors: Manfred Winter, Guenter Goerg, Ralf Poh
  • Patent number: 6923909
    Abstract: A variable compression disc filter housing secures a circumferentially welded composite layer of filter disc material for filtering a small amount of liquid for determining the optimum filter media material for specific production applications.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: August 2, 2005
    Assignee: Sidney Goldman Revokable Trust
    Inventor: Sidney Goldman
  • Publication number: 20040245169
    Abstract: The invention relates to a filter element for fluids, in particular for hydraulic fluids, comprising a filter material and a grid-like supporting structure supporting the filter material at least on its outflow side in relation to the flow direction of the filter element. In order to further develop the filter element such that it has a high mechanical stability, whilst static charges are avoided, it is proposed in accordance with the invention that the supporting structure comprise elements made from a plastics material and electrically conductive elements.
    Type: Application
    Filed: April 13, 2004
    Publication date: December 9, 2004
    Applicant: ARGO-HYTOS GmbH
    Inventor: Norbert Breusch
  • Patent number: 6827851
    Abstract: The invention relates to a filter module (4) with a simplified design which allows for the manufacturing of a step filter, Each ply of filter medium is composed of a deep-bed filter material layer (1, 1a-d) and the packing is composed of draining layers (5, 5a, 5b). The draining layers (5, 5a, 5b) and filter layers (5, 5a, 5b) are mutually sealed to the filtrate/non-filtrate chamber (2,3). The filter layers (1, 1a-d) can be arranged according to any pattern.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: December 7, 2004
    Assignee: Pall Corporation
    Inventors: Gerhard Strohm, Georg Schnieder
  • Patent number: 6825136
    Abstract: A filtering screen comprises a fine woven wirecloth filtering mesh (4) disposed above a coarse woven wirecloth support mesh (2). An intermediate woven wirecloth mesh (3) is disposed between the fine woven mesh (4) and the coarse woven mesh (2), the intermediate mesh (3) extending over a proportion of the area of the screen at or towards the rear thereof, said proportion being in the range of 20% to 40% of the area of the screen, and preferably substantially one third of the area of the screen.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 30, 2004
    Assignee: United Wire Limited
    Inventor: Gordon James Cook
  • Patent number: 6818130
    Abstract: The present invention provides a multistage liquid filtering apparatus and a multistage process for filtering microorganisms and other unwanted impurities from the liquid. The invention employs a microorganism-removing filter stage prior to an activated carbon filter stage and especially adaptable for use with home water supplies.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: November 16, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Monica G. Varriale, Robert J. Lyng, Michael S. Brunner
  • Patent number: 6799686
    Abstract: An expandable well screen has a desirable thin-wall construction together with a simplified fabrication method. In fabricating the screen, a flexible sheet of metal mesh filter media is diffusion bonded to an inner side of a perforated metal sheet which is then deformed to a tubular shape to form a filter structure having an outer perforated tubular shroud interiorly lined with the filter media. The tubular filter structure is telescoped onto a perforated base pipe and has its opposite ends sealingly secured thereto to complete the expandable well screen.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: October 5, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ralph H. Echols, Anthony D. Simone, Sam A. Hopkins
  • Patent number: 6716349
    Abstract: A filter for Diesel engine fuel, comprising a filtering mass which is contained within an enclosure and is provided so as to be crossed by the fuel in its path inside the filter between an intake connector and a discharge connector. The enclosure comprises a water collection chamber at its bottom. The filter further comprises at least two micromeshes which are adapted to be crossed sequentially by the fuel that exits from the filtering mass.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: April 6, 2004
    Assignee: Sogefi Filtration S.p.A.
    Inventors: Paolo Baracchi, Claudio Crovetti, Sergio Tallano
  • Publication number: 20040035783
    Abstract: Flat, stackable filter disk elements include a deep bed filter material for removing particulates from a flow of unfiltered fluid and thereby obtain a filtered fluid. The filter material has a thickness extending between a pair of major parallel planar surfaces which define a filter element plane, and include a first flow openings for the filtered fluid, a second flow opening for unfiltered fluid, and a collection opening for collecting one of the filtered and unfiltered fluids. The collection opening and the first and second flow openings extend through the filter material between the planar surfaces. The first and second flow openings also respectively define first and second flow surfaces for the filtered and unfiltered fluids which are substantially perpendicular to the filter element plane and which establish a fluid flow path between the first and second flow openings through the filter material which is substantially parallel to the filter element plane.
    Type: Application
    Filed: June 4, 2003
    Publication date: February 26, 2004
    Applicant: SEITZ-FILTER-WERKE GMBH
    Inventors: Gerhard Strohm, Georg Schnieder, Wolfgand Hepp
  • Patent number: 6695148
    Abstract: A transmission fluid filter material and transmission filter produced therefrom comprising a gradient density composite felt which exhibits high particle removal efficiency at 40 micron diameter particle size and larger with exceptionally high dirt holding capacity and no significant increase in clean pressure drop. The upstream portion of the composite felt contains fine fibers that selectively remove first the fine particles while the downstream portion acts to sieve coarse particles and build a porous filter cake, thereby extending the useful life of the filter.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: February 24, 2004
    Inventors: Edward C. Homonoff, John A. Davis, Stephen D. Copperwheat, Richard W. Mayo, Franklin D. Cean
  • Patent number: 6602407
    Abstract: An oriented structure for treating a fluid, comprising an inlet end for receiving a fluid to be treated and an outlet end opposite the inlet end and from which a treated fluid is discharged, the fluid being allowed to flow into the structure from the inlet end to the outlet end defining a flowing direction. The oriented structure comprises a juxtaposition of layers of porous material having a different porosity, each layer spanning from the inlet end to the outlet end of the structure whereby in use the layers are oriented generally parallel to the flowing direction of the fluid. The oriented structure is designed so to better control the different biological and physical phenomena related to the accumulation or exchange processes taking place in the structure.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: August 5, 2003
    Assignee: Premier Tech 2000 Ltee
    Inventors: Pierre Talbot, Roger Lacasse, Yves Arcand, Olivier Vermeersch, Jacek Mlynarek
  • Publication number: 20030141239
    Abstract: The invention relates to a filtration device for deep-bed filtration which is easier to handle and enables filter module(s) to be changed and disposed of easily. The filtration device has a casing with at least one filter module (1) inserted in the casing with filter elements (10, 10′, 10a′, 10b′) made from deep-bed filter materials stacked on top of each other. The filter elements have at least one internal structure (17) formed by a perforation (20) wherein the boundary surface of the perforation (20) formed by the deep-bed filter materials (12) creates a through-flow surface (11) for filtrates or non-filtrates. At least one end plate (52, 53) has at least one inlet and/or outlet.
    Type: Application
    Filed: August 3, 1999
    Publication date: July 31, 2003
    Inventors: GERHARD STROHM, GEORG SCHNIEDER, WOLFGANG HEPP
  • Patent number: 6579458
    Abstract: A screening device includes a screening element connected to a reinforcing element by a frictionally engaging clamping connection. Spacers located between the screening element and the reinforcing element provide a radial clearance therebetween. The screening element can be replaced when worn out, while the reinforcing element and associated parts can be reused with a new screening device. For this purpose, the screening element can be detached from the reinforcing element, which provides the actual support function, as a single unit by way of the frictionally engaging clamping connection. The clamping connection can be implemented by way of wedges or a conical seat.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: June 17, 2003
    Assignee: Heinrich Fiedler GmbH & Co. KG
    Inventors: Thomas Mickelat, Maximilian Baier, Hubert Gassmann
  • Patent number: 6527954
    Abstract: A filter element to be installed into a housing to constitute a filter assembly for separation of solids in a fluid is constructed from one or more baggy filtering mediums made of porous membrane or non-woven fabric of synthetic plastic, passageway material arranged along the inside and/or outside surface of the baggy filtering mediums depending on necessity and a sleeve joining with each opening of the baggy filtering medium(s). By adopting the baggy filtering mediums, it is possible to superimpose them into a filter element in a state of layers, and by adopting one baggy filtering medium folded repeatedly back and forth upon itself, it is also possible to construct another filter element in a state of layers, so as to fit to various filtration spaces in the housing. Accordingly, the space occupied by substantially parallel layered filtering medium(s) can be used densely for filtration, as the result a filtration area per unit filtration space is very large.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: March 4, 2003
    Inventor: Susumu Furuhashi
  • Publication number: 20030006186
    Abstract: A spiral wound filter element is disclosed which includes at least three radially successive prequalifying sections of filter medium commencing with a radially outer prequalifying section of filter medium and concluding with a radially inner prequalifying section of filter medium, each prequalifying section of filter medium having a number of perforation formed therein, wherein the number of perforations in the filter medium of each radially successive prequalifying sections is less than the number of perforations in the filter medium of a radially preceding prequalifying section, and further including a radially inner qualifying section of filter medium succeeding the radially inner prequalifying section, the radially inner qualifying section of filter medium having imperforate filtering layers.
    Type: Application
    Filed: May 9, 2002
    Publication date: January 9, 2003
    Inventors: John L. Pulek, Thomas J. Hamlin, Richard Sale, C. Thomas Paul
  • Patent number: 6458283
    Abstract: A method for separating fluid and fibrous lost circulation material from a mixture thereof that also includes drilled cuttings, the method including introducing the mixture onto a screen assembly that is vibrating for passage of the fluid and fibrous lost circulation material through the screen assembly and for separation of the driled cuttings from the fluid, the screen assembly with a plurality of screens one on top of the other and including at least a first screen and a second screen, one of the screens with a screen mesh with non-square openings as viewed from above to facilitate the passage of fibrous lost circulation material through the screen assembly.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: October 1, 2002
    Assignee: Varco I/P, Inc.
    Inventors: Thomas C. Adams, David W. Largent, David L. Schulte
  • Patent number: 6454942
    Abstract: A liquid separation membrane module includes a semipermeable membrane receiving a pressure of a feed liquid, and a channel material arranged so as to support the back side of the semipermeable membrane. The channel material is a tricot knitted fabric knitted by a tricot knitting machine with two reeds and has a ground stitch portion and a convex portion. The tricot knitted fabric includes a thermoplastic synthetic filament yarn with a core/sheath type conjugated fiber having a high melting point polymer as a core component and a low melting point polymer as a sheath component. Thermoplastic synthetic filament yarns for forming the ground stitch portion and the convex portion have a substantially same fineness, and the yarns in the tricot knitted fabric are bonded with one another by melt adhesion of the low melting point component to rigidity the entire knitted fabric.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: September 24, 2002
    Assignee: Nitto Denko Corporation
    Inventors: Takuji Shintani, Hiroki Ito, Masahiko Hirose, Masaaki Ando
  • Patent number: 6422396
    Abstract: A coalescer filter element for the separation of water from hydrocarbon fluids, such as kerosene, jet fuel, diesel fuel, and gasoline under surfactant conditions such as thermal stability additive and dispersant. Coalescer fibrous material has hydrophobic properties which resist surfactant coating of the fibers thereby allowing breakdown of water emulsion in the hydrocarbon fluids. The coalescer has a negative media density gradient in the liquid flow direction.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: July 23, 2002
    Assignee: Kaydon Custom Filtration Corporation
    Inventors: Yu Li, Jon A. Schnable, Holly T. Hill, Roger K. Miller
  • Publication number: 20020060182
    Abstract: An edge-type filter cartridge is disclosed which includes a housing and a plurality of filter disc assemblies coaxially stacked within an interior cavity of the housing for conditioning fluid passing therethrough. The filter disc assemblies include an upper filter disc, a lower filter disc, an outer spacer disc and inner spacer disc, the filter discs having a body portion and defining at least one filtration aperture for filtering fluid passing therethrough. The outer spacer discs are disposed between the upper and lower filter discs and defines a gap therebetween. It is further disclosed that the filtration apertures can be formed by a laser cutting technique.
    Type: Application
    Filed: September 17, 2001
    Publication date: May 23, 2002
    Inventor: Daniel J. O'Connell
  • Patent number: 6391097
    Abstract: A multiple disc filter includes a plurality of discs arranged in a stack with a face of each disc in contact with a face of the next adjacent disc in the stack. The contacting faces of the discs include surface formations defining small filtering passageways between adjacent discs for filtering a fluid passing between them. The surface formations include a rib array of spaced rib sections integrally formed on a flat surface of one of the contacting faces; and a protrusion array of spaced, discrete protrusions spacing the rib array of the one contacting face from a flat surface of the other contacting face.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 21, 2002
    Assignees: Milow Ltd.
    Inventor: Gideon Rosenberg