Medium Clamped In Joint Patents (Class 210/227)
  • Patent number: 10589194
    Abstract: A filtration module (1) has a filter unit (2) with at least one filter element (6) arranged between first and second plates (4, 5). The filter element (6) has at least one layer of filter material (9, 10) sealed off at a periphery by an edge seal (12). The plates (4, 5) are pressed against each other by a resilient bracketing profile (3) that engages around the plates (4, 5) at their opposite side surfaces (21, 22, 23, 24). The bracketing profile (3) has a base (13) that curves inward transversely to the longitudinal direction (14) of the plates (4, 5) and that is delimited by lateral brackets (16, 17) that are bent inward at their free ends (18, 19) to engage laterally around a surface (20) of the filter element (6) facing away from the base (13). A method also is provided for producing a filtration module.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: March 17, 2020
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Thomas Krumbein
  • Patent number: 10525413
    Abstract: A connecting system (1) has at least one connector (2) for a filter cassette (4) that can be inserted into a filter holder and has filter layers (5) between two end plates (6), and seals (7) between the filter layers (5) and/or between the end plates (6) and an adjacent filter layer (5). The connector has tensioning parts that engage in one another in a longitudinally displaceable manner and that can be fixed to the end plates (6) via their ends facing away from one another. The connector exerts a pretensioning force onto the end plates (6) when it is deflected to its maximum extent. The pretensioning force pulls the end plates (6) towards the filter layers (5), and when a contact-pressure force superimposed on the pretensioning force is applied to the end plates (6), the tensioning parts can be pushed towards one another correspondingly with the end plates (6).
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: January 7, 2020
    Assignee: Sartorius Stedim Biotech GmbH
    Inventors: Thomas Krumbein, Stefan Weisshaar, Michael Bates
  • Patent number: 10241027
    Abstract: Cuvette, comprising at least one measuring area on each one of two arms that are pivotally connected to each other such that from a swung-apart condition, they can be swung together into a measuring position in which the two measuring areas have a distance for positioning a sample between the measuring areas, and means for positioning the two arms in a measuring position in a cuvette shaft of an optical measuring device with a sample between the two measuring areas in a beam path of the optical measuring device that crosses the cuvette shaft.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 26, 2019
    Assignee: Eppendorf AG
    Inventors: Kurt Harnack, Helmut Knofe, Peter Scheffler, Wolfgang Goemann-Thoss, Sven Eikelmann, Christoph Jolie
  • Patent number: 10022674
    Abstract: A filter device including a stationary head piece and a movable end piece and a pack of adjacent elements including a recess plate, wherein the pack is arranged between the stationary head piece and the movable end piece, wherein the recess plate includes a base element including a recess forming a filter chamber between the adjacent elements, wherein the filter device includes a filter membrane between the adjacent elements, wherein the filter membrane retains a solid content of a suspension as a filter cake and allows a remaining liquid fraction of the suspension to pass as a filtrate, wherein the recess plate includes a fluid pipe discharging the filtrate, which fluid pipe runs along a narrow edge of the base element, wherein the recess plate includes a fluid duct that connects the fluid pipe to the filter chamber.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: July 17, 2018
    Assignee: OUTOTEC (FINLAND) OY
    Inventor: Bernd Boehnke
  • Patent number: 9669333
    Abstract: One aspect of the invention relates to a filter module comprising: —a filter element having at least one filter medium which separates a filtrate side and a retentate side of the filter element from one another, and having a filter medium holder to which the filter medium is attached and which has at least one holder intake channel and at least one holder discharge channel, —a first filter cartridge part having at least one first cartridge intake channel and at least one first cartridge discharge channel, —a second filter cartridge channel having at least one second cartridge intake channel and at least one second cartridge discharge channel, wherein the filter medium holder is arranged in an arrangement position between the first filter cartridge part and the second filter cartridge part in a fluid-tight manner, wherein the at least one holder intake channel has a fluid connection with the at least one first cartridge intake channel and the at least one second cartridge intake channel, in order to form a mod
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: June 6, 2017
    Assignee: Sartorius Stedim Biotech GmbH
    Inventors: Martin Leuthold, Stefan Weisshaar, Christoph Schich, Thomas Krumbein
  • Publication number: 20150083654
    Abstract: A filter plate assembly [1] comprises a filter plate [100] having a recess [102], a radially-inwardly extending shelf portion [108] having a seat surface [101], and a feed eye aperture [110] extending through the shelf portion. An adapter ring [170] is placed within said recess [102]. The adapter ring [170] has a flange [172] and a barrel [179] extending from the flange [172]. The barrel [179] has an inner wall [180] and an outer wall [182], and is positioned within said aperture [110] such that the outer wall [182] of the barrel [179] is in close proximity with said aperture [110]. The flange [172] comprises an inner surface [173] which abuts the seat surface [101]. The filter plate assembly [1] further comprises a filter cloth assembly [160] comprising a filter cloth [168] having an aperture [168B], and a grommet [168A] fitted within the filter cloth aperture [168B].
    Type: Application
    Filed: May 23, 2013
    Publication date: March 26, 2015
    Inventors: Sam Cartwright, Reuben Neumann
  • Publication number: 20150068986
    Abstract: The invention relates to a filter device for filtering a suspension, and the method of operation thereof, wherein between a stationary head piece and a movable end piece, the filter device has a pack of a recess plate and an adjacent recess plate, the filter device has a suspension pipe for piping a first stream of the suspension from the head piece into the pack, wherein connecting to the end piece, and a supply pipe for piping a second stream of the suspension into the suspension pipe, forming a filter chamber, the recess plate and/or the adjacent recess plate has a recess, from the suspension pipe, the recess plate has a suspension duct for piping the suspension into the filter chamber, and wherein between the recess plate and the adjacent recess plate, the filter device has at least one filter cloth for filtering a solid content out of the suspension.
    Type: Application
    Filed: April 19, 2012
    Publication date: March 12, 2015
    Applicant: OUTOTEC (FINLAND) OY
    Inventor: Bernd Böhnke
  • Patent number: 8883003
    Abstract: The invention concerns a filtration device comprising a manifold (3) providing fluid connection and mechanical connection comprising a clamping plate (4) movably mounted relative to the manifold (3) and adapted to compress at least one cassette (2) against the manifold (3), means for driving and guiding the clamping plate comprising a rod (6) extending between the manifold (3) and the plate (4), an actuator provided with a body and a member moveable relative to the body, which member is adapted to move through a predetermined travel between an extended position and a retracted position, the body being carried by the manifold (3), and the member carrying the rod (6) and driving the plate (4) via the rod (6) to a clamped position in which the member is in an intermediate retracted position in which it has moved through a shorter travel than the predetermined travel relative to its extended position.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: November 11, 2014
    Assignee: EMD Millipore Corporation
    Inventors: Sebastien Cirou, Jean-Louis Weissenbach, Rene Reinbigler, Jean-Luc Beulay, Frans Mels, Cecile Delbos
  • Patent number: 8877052
    Abstract: The invention concerns a filtration device comprising a manifold (3) providing fluid connection and mechanical connection comprising a clamping plate (4) movably mounted relative to the manifold (3) and adapted to compress at least one cassette (2) against the manifold (3), means for driving and guiding the clamping plate comprising a rod (6) extending between the manifold (3) and the plate (4), an actuator provided with a body and a member moveable relative to the body, which member is adapted to move through a predetermined travel between an extended position and a retracted position, the body being carried by the manifold (3), and the member carrying the rod (6) and driving the plate (4) via the rod (6) to a clamped position in which the member is in an intermediate retracted position in which it has moved through a shorter travel than the predetermined travel relative to its extended position.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: November 4, 2014
    Assignee: EMD Millipore Corporation
    Inventors: Sebastien Cirou, Jean-Louis Weissenbach, Rene Reinbigler, Jean-Luc Beulay, Frans Mels, Cecile Delbos
  • Publication number: 20130306539
    Abstract: The invention concerns a filtration device comprising a manifold (3) providing fluid connection and mechanical connection comprising a clamping plate (4) movably mounted relative to the manifold (3) and adapted to compress at least one cassette (2) against the manifold (3), means for driving and guiding the clamping plate comprising a rod (6) extending between the manifold (3) and the plate (4), an actuator provided with a body and a member moveable relative to the body, which member is adapted to move through a predetermined travel between an extended position and a retracted position, the body being carried by the manifold (3), and the member carrying the rod (6) and driving the plate (4) via the rod (6) to a clamped position in which the member is in an intermediate retracted position in which it has moved through a shorter travel than the predetermined travel relative to its extended position.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: EMD Millipore Corporation
    Inventors: Sebastien Cirou, Jean-Louis Weissenbach, Rene Reinbigler, Jean-Luc Beulay, Frans Mels, Cecile Delbos
  • Patent number: 8512560
    Abstract: A filter press includes a press frame containing side beams (2) to support filter plates (17) movably along the longitudinal axis of the side beams (2). The filter plates (17) are oriented at right angles to the longitudinal axis of the side beams (2) and connected to one another. A pressure plate (4) can be moved along the longitudinal axis of the side beams (2) by a pushing or pulling device, and which presses the filter plates of the sliding carriage (3) against one another during the filtration process. The pushing or pulling device is mounted on a sliding carriage (3) that can be moved on the side beams (2) along the longitudinal axis of the side beams (2) by a drive unit mounted on the sliding carriage (3).
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: August 20, 2013
    Assignee: Andritz Technology and Asset Management GmbH
    Inventors: Thomas Paschedag, Marion Bohme
  • Publication number: 20130105325
    Abstract: The present disclosure is directed at a compression device for compressing a stack to prevent leaks and at an apparatus including the stack and the compression device. The stack includes a pair of rigid end plates located at opposing ends of the stack, a plurality of membrane bounded compartments layered between one of the rigid end plates and the other of the rigid end plates and fluid manifolds extending through the membrane bound compartments. The compression device is fixedly coupled to opposing ends of the pair of rigid end plates and includes compression members movable to compress one of the rigid end plates towards the other of the rigid end plates. The compression members are positioned to apply force to the stack in the vicinity of the fluid manifolds.
    Type: Application
    Filed: October 18, 2012
    Publication date: May 2, 2013
    Applicant: SALTWORKS TECHNOLOGIES INC.
    Inventor: SALTWORKS TECHNOLOGIES INC.
  • Patent number: 8313645
    Abstract: The invention relates to a filter device comprising at least one filter chamber (7) configured between a chamber side (5) and a membrane side (6) of two parallel filter plates (1) and divided through two filter cloths (4), the membrane sides (6) of the two filter plates (1) each comprising a membrane (3), an outlet (8), and a deviation element (12) attached to the outlet (8) and penetrating the membrane (3). When the filter device is closed, a suspension containing a solid substance can be inducted between the filter cloths (4) in such a way that a filtrate penetrates the filter cloths (4) on the chamber side (5) and on the membrane side (6), while the solid substance is deposited in a filter cake on the filter cloths (4). The filtrate flows initially substantially parallel to the filter cloth (4) towards the outlet (8), is deviated through the deviation element (12) in an outlet direction (9) perpendicular to the filter cloth (4), and flows out through the outlet (8).
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: November 20, 2012
    Assignee: Larox Oyj
    Inventor: Heinz Bonn
  • Patent number: 8206582
    Abstract: A shaking device for filter plates of a filter press including a fixed support, a movable frame, a sleeve spring device, and a shaking rod. The fixed support includes a main beam and a support crossbeam. The movable frame includes a frame crossbeam and a vertical beam. The movable frame is disposed on the support crossbeam. One end of the sleeve spring device is attached to the frame crossbeam and the other end is attached to the shaking rod. The movable frame is driven by a gear motor. The shaking device further includes a cylinder assembly. The cylinder assembly is coaxially connected with the sleeve spring device and the shaking rod in a straight line. When the cylinder assembly acts on the shaking rod, the shaking rod shakes to separate and shakes a plurality of filter cloth rods of the filter plates to remove the filter cakes.
    Type: Grant
    Filed: January 7, 2012
    Date of Patent: June 26, 2012
    Inventors: Guiting Jiang, Baochang Liu
  • Publication number: 20120111782
    Abstract: The invention concerns a filtration device comprising a manifold (3) providing fluid connection and mechanical connection comprising a clamping plate (4) movably mounted relative to the manifold (3) and adapted to compress at least one cassette (2) against the manifold (3), means for driving and guiding the clamping plate comprising a rod (6) extending between the manifold (3) and the plate (4), an actuator provided with a body and a member moveable relative to the body, which member is adapted to move through a predetermined travel between an extended position and a retracted position, the body being carried by the manifold (3), and the member carrying the rod (6) and driving the plate (4) via the rod (6) to a clamped position in which the member is in an intermediate retracted position in which it has moved through a shorter travel than the predetermined travel relative to its extended position.
    Type: Application
    Filed: May 12, 2011
    Publication date: May 10, 2012
    Applicant: MILLIPORE CORPORATION
    Inventors: Sebastien Cirou, Jean-Louis Weissenbach, Rene Reinbigler, Jean-Luc Beulay, Frans Mels, Cecile Delbos
  • Patent number: 8052869
    Abstract: A chamber filter plate for a filter press includes a plate plane having a longitudinal direction and a crosswise direction. A plate body has a surface with a thickness. A plate edge frames the plate body and is thicker than the surface of the plate body. The plate edge has at least one hollow channel formed therein, extending in the longitudinal and/or crosswise direction. A method of producing a chamber filter plate is also provided.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: November 8, 2011
    Assignee: JVK Filtration Systems GmbH
    Inventor: Manfred Hermann
  • Patent number: 7931804
    Abstract: A filter assembly is provided. Embodiments of the filter assembly allow for the continuous filtering of the frying oil, while the fryer is on-line. The filter assembly may include a dirty chamber, a clean chamber, a pump configured to suck the frying oil through the chambers, and a toggle clamp configured to move the filter assembly between a closed configuration and an opened configuration. In the opened configuration, the filter assembly is configured to seal a filter media portion between the two chambers. The pump is configured to suck oil into the dirty chamber and through the filter media and into the clean chamber in order to filter dirt from the oil. In the opened configuration, the filter assembly is configured to allow the removal of now dirty filter media portion from between the chambers and the insertion of a new clean filter media portion.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: April 26, 2011
    Assignee: Schroeder, Inc.
    Inventor: Kurt Schroeder
  • Publication number: 20100294707
    Abstract: A filter cartridge is described that is designed to accommodate multi-stage filtration, for example dual stage filtration. A filter cartridge includes an outer filter with an endplate and an inner filter arranged within the central axis of the outer filter and that includes an endplate. The endplate of the outer filter includes an outer portion and an inner portion substantially surrounded by the outer portion. The inner portion is axially positioned relative to the outer portion and distal to the inner and outer filters relative to the outer portion. The inner portion includes an upwardly extending flange. The endplate of the inner filter includes a downwardly extending flange. The endplates of the outer and inner filters are arranged in a snap fit connection through engagement of the upwardly extending and the downwardly extending flanges. The endplate structure can provide a filter cartridge with filters of generally equal lengths.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 25, 2010
    Applicant: Cummins Filtration IP Inc.
    Inventors: Wassem Abdalla, Ricky England, Sainath R. Racha, Eric R. Burgan, Jeffrey A. Husband
  • Patent number: 7790027
    Abstract: A membrane filter plate for a filter press includes a membrane fastened in the filter plate. The membrane has a flexible support layer, a central region with a functional layer different from the flexible support layer, and edge regions free of the functional layer.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: September 7, 2010
    Assignee: JVK Filtration Systems GmbH
    Inventor: Manfred Hermann
  • Publication number: 20100155342
    Abstract: A method for filtering a suspension, the suspension initially being inducted into a filter chamber in a direction which is substantially parallel to at least one filter cloth on a filter cake side of same, the filter chamber being configured substantially lens shaped between two parallel filter plates, when a filter device is closed, whereas when the filter device is open, the filter plates are at such a distance that the at least one filter cloth can be removed from the filter chamber, thereafter a filtrate to permeates the at least one filter cloth to a filtrate side of the filter cloth, wherein a solid content of the suspension is deposited as a filter cake on the filter cake side, and the filtrate subsequently flows out of the filter chamber on the filtrate side. The invention also relates to such a filter device.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 24, 2010
    Inventor: Heinz Bonn
  • Publication number: 20100065513
    Abstract: Apparatuses and methods for making and using a filter cloth assembly are described. A filter cloth assembly can have a liquid permeable filtering media attached to a connector ring. The liquid permeable filtering media separates at least one solid from at least one liquid in a slurry. The filtering media has a feed hole formed therein to allows passage of a slurry through the filtering media. The connector ring includes a flange having an upper flange section and a lower flange section. The lower flange section receives an edge of the feed hole to connect the filtering media to the connector ring such that the face of the filtering media is substantially flush with the upper flange section.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 18, 2010
    Applicant: MICRONICS, INC.
    Inventor: Barry F. HIBBLE
  • Patent number: 7674386
    Abstract: A slurry filtration system and apparatus with peripheral elements for conditioning a slurry prior to entry into a pressure filter (32) and the control of fluid and liquid introductions into the filter (32) to produce a desired filter cake or filtrate. The system includes a controller (16) for controlling the operation of the peripheral treatment for the introduction of coagulants, flocculants and polymers to treat or condition a slurry introduced into the filter (32) and the control of additional peripheral equipment for treatment of the slurry with liquid clearing or cake forming gas, steam, or drying or conditioning gas within the filter chamber (40) for the production of both filtrate and filter cake from the filter (32) to a form desired.
    Type: Grant
    Filed: June 12, 2004
    Date of Patent: March 9, 2010
    Assignee: FLSmidth A/S
    Inventor: Steve C. Benesi
  • Patent number: 7635426
    Abstract: A filtration housing is disclosed.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: December 22, 2009
    Assignee: GE Healthcare Bio-Sciences Corp.
    Inventors: Martin J. Weinstein, Attila Herczeg
  • Patent number: 7326341
    Abstract: The invention relates to a membrane filter press. On operation of such a press a secure generation of the necessary pressing pressure can be guaranteed with a membrane filter press that has at least one membrane filter plate, a baseplate with thickened edge region, a membrane made from an elastically-deformable material, and a filter cloth. The novel membrane has an annular edge bead which lies in a complementary groove on the baseplate. A sealing groove is formed into the baseplate which opens out into the first-mentioned groove at both ends in the manner of a bypass. A complementary sealing projection, moulded on the annular bead, engages in the sealing groove with formation of a seal. The cavity enclosed between the groove and the sealing groove is preferably provided with at least one filtrate drain bore.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: February 5, 2008
    Assignee: JVK Filtration Systems GmbH
    Inventors: Bernhard Salbaum, Ulrich Knye, Manfred P. Hermann
  • Patent number: 7201845
    Abstract: A system for moving a filter or a retainer into or out of a fluid pathway without halting the movement of the fluid in the pathway. When acting as a filtering device, the system includes a filter frame and a drive mechanism for slidingly moving the filter frame on stationary rails that remain in the duct through which the fluid is transferred. When a retainer device, the system includes a retainer and a drive mechanism for slidingly moving retainer on stationary rails that remain in the chamber through which a fluid under treatment passes. The system includes isolation means permitting the filter frame or retainer to pass into or out of the duct or chamber without exhausting the fluid within the duct or chamber. The drive mechanism may be a guillotine damper gate drive, a spindled drive, a hydraulic actuator or other drive means. The filter or the retainer may include a plurality of bays that are rigidly, hingedly, or detachably connected together.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 10, 2007
    Assignee: Bachmann Industries, Inc.
    Inventor: William F. Koch
  • Patent number: 7090770
    Abstract: The invention relates to a filter cloth for a filter press and to a method for producing said filter cloth. The inventive filter cloth has a filtration section through which the filtrate reaches a filter element of the filter press, and an edging section which rests against the edge of the filter element. The filtration area is provided with a cloth that differs from that of the edging section. The filtration area is woven from monofil yarns while multifil yarns are woven into the edging section.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: August 15, 2006
    Assignee: Sefar AG
    Inventors: Hans Rudolf Mueller, Christoph Maurer
  • Patent number: 7011741
    Abstract: A pressure-filter apparatus includes at least one filtration chamber coupled with a source of slurry. The filtration chamber is also coupled with a source of fluid at an elevated pressure, which may be arranged in series or in parallel with a source of wash fluid. The pressure-filter apparatus may also include a source of fluid at a conventional pressure. The source of fluid at elevated pressure has a limited volume for initially treating the slurry within the chamber. The source of fluid at conventional pressure has a substantially unlimited volume for completing the treating of slurry within the chamber. The relative volume capacity of the two fluid sources provides an improved efficiency in the treatment of the slurry and the overall efficiency of the apparatus by limiting the time and capacity of accumulation of elevated pressure fluid while using the conventional pressure for extended treatment of the slurry within the chamber.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: March 14, 2006
    Inventor: Steve C. Benesi
  • Patent number: 6929743
    Abstract: The invention relates to a device and an assembly for cross-flow filtration comprising filter cassettes. Said filter cassettes are cost-effective to produce as they have few connections and simple clamping plates and are characterized by a long service life and by being highly flexible in adapting their capacity to the desired cross-flow filtration performance. The inventive device (1) comprises a holder and at least one filtration segment (2) consisting of clamping plates with filter cassettes fitted in a sealed manner therebetween. The clamping plates, which are configured as end plates, separation plates, distribution plates and collection plates and the filter cassettes are positioned on the holder so that they can be moved towards one another.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: August 16, 2005
    Assignee: Sartorius AG
    Inventor: Bernhard Diel
  • Patent number: 6875352
    Abstract: A module filter has a container with an admission for a non-filtrate and a discharge for the filtrate. A filter module is arranged in the container and has several stacked, disc-shaped filter cells of filter material having an inner space. The filter cells have central openings forming a central channel connected with the inner space. The central channel is connected to the admission. The container has a space surrounding the filter cells and connected with the filtrate discharge. Circular disc-shaped drainage support bodies are arranged between the filter cells and extend approximately over the entire surface area of the filter cells. The drainage support bodies have drainage channels that extend toward their outer rim. The drainage support bodies have projections projecting axially away from the drainage support bodies and extending radially. Between the projections intermediate spaces are defined which form the drainage channels and remove the filtrate.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: April 5, 2005
    Assignee: Pall Corporation
    Inventors: Wolfgang Diemer, Horst Freischlag, Klaus Figgle, Eberhard Scheible
  • Patent number: 6846412
    Abstract: A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: January 25, 2005
    Assignee: BTG International Limited
    Inventors: Brendan Hogan, Jan Willem Marinus Myers
  • Patent number: 6641726
    Abstract: The present invention relates to a filter device for completely removing residual amounts, after filtration, from the space of the unfiltered product. The filter device comprises a plurality of parallel filtration plates which are separated by filtration layers as well as by membrane plates submitted to the action of pressurized air. The membrane plates are exclusively covered on both sides by a stretched membrane, wherein said membranes have a smooth outer surface and are made of a flexible material so as to cover completely the adjacent space of the unfiltered product.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: November 4, 2003
    Assignee: H. Strassburger GmbH & Co. KG
    Inventor: Horst J Sebastian
  • Patent number: 6613226
    Abstract: A laminated modular water filter includes a top plate, a bottom plate and a plurality of superposed intermediate plates disposed between the top and bottom plates. Each adjacent pair of the top, intermediate and bottom plates are interconnected removably, and define an accommodating space therebetween, within which a filter unit is received fittingly. Each of the top and bottom plates has a central hole which is in fluid communication with central holes in the intermediate plates, and two side openings which are in fluid communication with a plurality of annular outer passages units in the intermediate plates that are in fluid communication with the accommodating spaces. Each of the filter units includes two filter films interconnected fixedly along outer peripheries thereof, and a filter net disposed between the films so as to define an annular filtered-water passage between the films that is fluid communication with the central holes.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 2, 2003
    Assignee: Kintech Technology Co., Ltd.
    Inventor: Joseph Kuo
  • Publication number: 20030066794
    Abstract: The invention relates to a device and an assembly for cross-flow filtration comprising filter cassettes. Said filter cassettes are cost-effective to produce as they have few connections and simple clamping plates and are characterised by a long service life and by being highly flexible in adapting their capacity to the desired cross-flow filtration performance. The inventive device (1) comprises a holder and at least one filtration segment (2) consisting of clamping plates with filter cassettes fitted in a sealed manner therebetween. The clamping plates, which are configured as end plates, separation plates, distribution plates and collection plates and the filter cassettes are positioned on the holder so that they can be moved towards one another.
    Type: Application
    Filed: June 27, 2002
    Publication date: April 10, 2003
    Inventor: Bernhard Diel
  • Patent number: 6531061
    Abstract: Disclosed is a disposable dialysis cassette which is flat, flexible, self-closing and applicable to solutions containing proteins, DNA, RNA, or other molecules. The dialysis cassette embodies a first and second semi-permeable dialysis membrane, or tubular dialysis membrane, sealed by a flexible frame to form a dialysis chamber having a self-closing channel for the introduction of a dialysis sample by either a pipette or other dispensing mechanism.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: March 11, 2003
    Inventor: Olivia M. Cholewa
  • Patent number: 6521135
    Abstract: A pressure-filter apparatus includes at least one filtration chamber coupled with a source of slurry. The filtration chamber is also coupled with a source of fluid at an elevated pressure, which may be arranged in series or in parallel with a source of wash fluid. The pressure-filter apparatus may also include a source of fluid at a conventional pressure.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: February 18, 2003
    Inventor: Steve C. Benesi
  • Patent number: 6491817
    Abstract: A pressure filter includes two continuous mating surfaces movable relative each other and a filter medium capable of being disposed therebetween. A surface, provided for supporting the filter medium, is bounded by and is substantially coplanar with one of the continuous mating surfaces. The filter further includes a shallow inlet cavity, bounded by the other of the continuous mating surfaces, and an inlet distributor in communication with the inlet cavity. The inlet distributor includes at least one opening and may be of internal or external type. When the mating surfaces are pressed together, a shallow filtration chamber is defined by the inlet cavity and the filter medium. The filter apparatus may include a plurality of shallow filtration chambers, stacked one above the other, and constructed as described above.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: December 10, 2002
    Inventor: Steve C. Benesi
  • Publication number: 20020038782
    Abstract: The present invention is directed to a plate-and-frame type membrane module inserted durable balls using vortex flow, and the membrane module can reduce concentration polarization, cake or gel layer and membrane fouling which generally occur in processes using plate-and-frame type membrane. Thus, the use of a membrane module according to the present invention can prolong the period for cleaning of a membrane module and the exchange period of a membrane module, as well as maximize a passing amount without decreasing a quality of permeate.
    Type: Application
    Filed: August 6, 2001
    Publication date: April 4, 2002
    Inventors: Jae-Jin Kim, Jong-Pyo Kim
  • Patent number: 6343697
    Abstract: A filter device, particularly for filtering melt-type fluids, such as polymer melts, includes at least one filter disk having two filter disk halves connected to each other by their edges and provided with filter material on their exterior surfaces. The filter disk halves are held apart by a supporting device delimiting a substantially free hollow area between them, through which a fluid can flow freely. Inwardly, they delimit an outflow opening for the melt-type filtered fluid. The supporting device has individual supporting cams of substantially equal outer dimensions and arranged in several groups. Separated from each other, the supporting cams extend radially outwardly form the outflow opening, are rigidly connected to at least one of the two halves, and traverse the hollow area in such a way as to rest against the other filter disk half. This results in a filter device which is economical to produce and which has enhanced filter performance when in operation.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: February 5, 2002
    Assignee: Hydac Process Technology GmbH
    Inventors: Jurgen Hausdorf, Norbert Lang, Heinrich Teckentrup
  • Patent number: 6159359
    Abstract: A modular filter apparatus is formed from stacked filter modules. Slurry to be filtered flows into the apparatus through a flowmeter and check valve into a header. The flow of slurry then branches off through feeders to each of the filter modules. Connected to the header is a slurry supply source, a cakewash supply source and a header drain. The modules are coupled to a hydraulic jack mechanism and an upper strongback.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: December 12, 2000
    Inventor: Steve C. Benesi
  • Patent number: 6158142
    Abstract: A vise having vise members is provided with a vise face on each vise member. The vise faces are opposed and together define an initial vise volume having an open top for receiving loose, wet screenings. The vise faces form jaws moved relative to each other to squeeze the loose, wet screenings, which is a process of enclosing and applying force to the loose, wet screenings to compress the screenings and force the liquid out of or from the material of the screenings. The squeezing makes a loaf volume significantly smaller than the initial volume, and converts the loose wet screenings into a separate dry loaf. A platform has many separate stations. At one station (e.g., receiving & squeezing), a bottom of the trough is sieve-like for draining the liquid from the wet screenings. At another station (e.g., conveying), the bottom of the platform is closed to retain the separate dry loaf of screenings for conveying. At another station (e.g.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: December 12, 2000
    Assignee: Meurer Industries, Inc.
    Inventors: Joseph Karl Brauch, Charles Lonnie Meurer, Douglas Lee Meurer, James Malcolm Meurer
  • Patent number: 6132608
    Abstract: A filter sheet positioned between plates (14) of a filter press has a fluid-impermeable wax layer (11) sealing the sheet's perimeter. The wax preferably comprises ethylene bis stearamide and has a durometer reading of about 75 to about 100 Shore A hardness at 25.degree. C. and 85.degree. C., a melt point of about 110.degree. C. to about 180.degree. C., and a viscosity of less than about 100 cp at 155.degree. C. The wax layer increases the useful life of the filter sheet while providing a sheet which is easily released from a filter press and which retains integrity along the seal during repeated hot water sanitations.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: October 17, 2000
    Assignee: Cuno Incorporated
    Inventors: Richard D. Sale, Mark W. Schimmel, Richard A. Prince, Norbert Roessler
  • Patent number: 6099725
    Abstract: A tower press filtering system (1) is provided. System (1) includes a frame assembly (10) having at least one support engagement portion (14); a collapsible filter tower assembly (20) having a plurality of displaceable filter plate members (20); a press assembly (30) having a support plate member (300), a compression mechanism (320), and a press plate (326); and, a stabilization assembly (40) for automatically maintaining press plate (326) in a fixed planar orientation during displacement thereof. System (1) also includes a port assembly (50) having a substantially rigid conduit segment (52) that maintains coupling with the manifold section (210) of at least one filter plate member (200). System (1) also includes a mechanism by which the coupling of each compression mechanism (320) employed may be adjustably coupled to support plate (300).
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: August 8, 2000
    Assignee: The Bethlehem Corporation
    Inventors: Alan Silverstein, Esko Riikonen, Mikhail Pavlovich Yuryev, Vitaliy Grigoryevich Saenko, Yuriy Dmitrievch Gorodyskiy
  • Patent number: 5762786
    Abstract: A plate filter press with chamber plates and diaphragm carrier plates and diaphragms secured thereto is provided that makes it possible to provide an adequately large, radial slurry admission cross-section that remains free of blockage. An annular supporting collar that respectively embraces the aperture edge of the chamber plate and has a U-shaped cross-section in its edge region is arranged in the central flow-through opening of every chamber plate, whereby the end of each U-leg comprises an annular seating wedge for supporting the arched diaphragm. The seating wedge extends in the direction of the respectively neighboring diaphragm and does not constrict the radial flow channel to the respective filter space.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: June 9, 1998
    Assignee: Rittershaus & Blecher GmbH
    Inventor: Max Oelbermann
  • Patent number: 5741419
    Abstract: An apparatus for filtering a liquid slurry is described. The apparatus uses a pair of filter chambers formed by a pair of fixed plates, and a pair of opposed moveable plates. The moveable plates are moved into engagement with the fixed plates by the downward movement of a wedge member disposed between the plates and, the plates are bias so that when the wedge member is withdrawn, the plates will be drawn together opening the filter chambers. The chambers are sealed by opposed arcuate gaskets so that the sealing action is achieved by internal pressure rather than the pressure driving the plates together. A filter media is provided on a continuous roll which extends between the gaskets and is intended to carry the filter cake out of the chamber when the plates are separated whereupon the cake will be dropped from the filter media into a collection area so that the filter media can be reused.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: April 21, 1998
    Assignee: Environmental Treatment Facilities Inc.
    Inventor: Thomas D. Baxter
  • Patent number: 5658468
    Abstract: An elastic membrane filter, in particular for filtration of mash, has a lower feed pipe and a second or upper feed pipe passing through the filter elements at a location opposite the lower feed pipe, the upper feed pipe being connected of the lower feed pipe so that it is fed with liquid to be filtered from the downstream end of the lower feed pipe and flowing in the opposite direction to the liquid in the lower feed pipe, a pipe connecting the lower and the upper feed pipes.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: August 19, 1997
    Assignees: Interbrew S.A., Atelier Louis Carton S.A., Krontec S.A.
    Inventors: Rafael Tigel Gil, Jean Biche
  • Patent number: 5573667
    Abstract: A belt filter medium with detecting means for a filter apparatus and method is disclosed for separating solid materials from liquid materials in a slurry fluid. The apparatus includes separable plate members (12,14) that are pressed against each other to form a filter chamber (10). The plates have mating surfaces (34,54) and hollow interior portions that create the chamber. A filter medium (28) is placed between the mating surfaces before the plates are closed. The apparatus includes means for forcing wash fluids, liquids or gasses through the slurry to force the fluids from the slurry and to produce a dry filter cake of the solids. After the filtration has been completed, the plates are separated leaving the filter cake on the filter medium and the filter medium is advanced out of the filter chamber moving a clean filter medium between the open filter plates. Another filter operation them proceeds. The filter medium is cleaned outside of the filter apparatus and can be prepared for reuse.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 12, 1996
    Inventor: Steve C. Benesi
  • Patent number: 5510025
    Abstract: A filter apparatus and method is disclosed for separating solid materials from liquid materials in a slurry fluid. The apparatus includes separable plate members (12, 14) that are pressed against each other to form a filter chamber (10) . The plates have mating surfaces (34, 54) and hollow interior portions that create the chamber. A filter medium (28) is placed between the mating surfaces before the plates are closed. The apparatus includes means for forcing wash fluids, liquids or gasses through the slurry to force the fluids from the slurry and to produce a dry filter cake of the solids. After the filtration has been completed, the plates are separated leaving the filter cake on the filter medium and the filter medium is advanced out of the filter chamber moving a clean filter medium between the open filter plates. Another filter operation them proceeds. The filter medium is cleaned outside of the filter apparatus and can be prepared for reuse.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 23, 1996
    Inventor: Steve C. Benesi
  • Patent number: 5462677
    Abstract: A filter belt movement control and belt treatment means for a pressure filter apparatus. The movement control includes a marking means in or on the filter belt medium and a sensing means on the filter apparatus. The sensing means detecting the position of the marking means in or on the belt filter medium and adapted to signal a controller for control of the position of the belt filter medium within the apparatus. The treatment means including cleaning, bathing and coating means for treating the belt filter medium and vibratory means for operation with the treating means.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: October 31, 1995
    Inventor: Steve C. Benesi
  • Patent number: 5453184
    Abstract: The present invention relates to a filter carrier 1 for the construction of a filter tower 9. To simplify the construction on the whole, the invention provides for a seal which is arranged on the pressure-exerting plate of the filter carrier and comprises a sealing edge for sealing between the pressure-exerting plate and. the side wall of a filter carrier positioned thereunder, as well as a sealing collar for sealing and retaining the distributor element on the pressure-exerting plate.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: September 26, 1995
    Inventor: Thomas Handtmann
  • Patent number: 5449455
    Abstract: A closer mechanism and method of operation is provided for filter press assemblies and similar applications having a movable plate for opening and closing the assembly. A flexible bladder is arranged adjacent the movable plate and initially pressurized by a low pressure, high volume supply and then a high pressure, low volume supply regulated by sequencing controls. The flexible bladder is preferably enclosed by a rigid confinement assembly while being allowed to expand and contract for positioning the movable plate. The low pressure supply and high pressure supply are preferably of a gas-over-liquid type while including a reservoir and venting controls for conserving operating liquid within the closer mechanism. In one embodiment, the movable plate is rectangular and the rigid confinement assembly is similarly shaped to provide a particularly compact configuration with the bladder having an inflatable cross-section generally equal in area to the movable plate.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: September 12, 1995
    Assignee: Womack International, Inc.
    Inventor: Thomas H. Womack