Within Sealed Enclosure Patents (Class 210/398)
  • Patent number: 9004289
    Abstract: In at least one embodiment, a filter device for filtering out of solid substance from a solid-liquid-mixture, including a bearing shaft extending along a rotation axis; a rotation body detachable from the bearing shaft and supported by the bearing shaft to be rotatable about the rotation axis; one or more filter cells formed on the rotation body and each includes a filter structure attached to the rotation body for filtering out the solid substance and allowing the liquid to pass from an inlet side to an outlet side, and a connection channel formed in the rotation body and that extends from the outlet side to an outlet opening which is formed on an axial side of the rotation body in a radial distance to the rotation axis; and a control device having a structural control unit for providing a connection between the respective outlet opening and a plurality of lines.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: April 14, 2015
    Assignee: ANDRITZ KMPT GmbH
    Inventors: Bruno Hegnauer, Gunnar Grim
  • Patent number: 8932459
    Abstract: A seal is brought into contact with a filter media, a filter pump is operated to start filtration, and a signal from a pressure sensor is received. When a predetermined value is exceeded by the signal from the pressure sensor, the filter pump is stopped, the seal is separated from the filter media, and take-up of one section of the filter by a filter collection roll is started. In finishing filter supply from a filter supply roll, drive of a motor is stopped, and an alarm signal is transmitted. If the supply is not to be finished, one section of the filter is taken up by the filter collection roll, and the next stage of filtration is entered.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: January 13, 2015
    Assignee: Fanuc Corporation
    Inventor: Hirotsugu Kasai
  • Publication number: 20140116965
    Abstract: A separator and method for separating a heterogeneous supply into a liquid and a solid material. The separator includes a casing in which the supply can collect, and which has an inlet for receiving the supply and an outlet for conveying the supply. The separator also includes a screen which rotates relative to the casing. The screen has perforated sections having a plurality of perforations which permit passage of the liquid. The screen allows for the accumulation of the supply within it, which rises to a level corresponding to a supply height. As this supply height, a screening pressure acts against the perforated sections so as to compact the solid material against the perforations while the liquid passes therethrough. A suction unit sucks the compacted solid material from the perforations, and is disposed higher than the supply height. A supply level regulator regulates the level of the supply within the screen.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 1, 2014
    Applicant: MACHINERIE AGRICOLE BOIS-FRANCS INC.
    Inventor: Camille COTE
  • Publication number: 20140110356
    Abstract: A device for separating particulate matter (e.g., cells) from a liquid including a housing defining an elongate chamber disposed between a receiving end and a dispenser end, a plunger slidably inserted within the chamber from the receiving end, an upper disc and a lower disc each independently slidably affixed to the plunger, the lower disc facing the dispenser end and including at least one filter arrangement, and a liquid including particulate matter disposed within the chamber when the upper disc and lower disc are in an aspiration mode. The upper disc is independently slidable with respect to the lower disc to achieve a filtration mode.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: Warsaw Orthopedic, Inc.
    Inventor: William F. McKay
  • Patent number: 8585898
    Abstract: The present invention relates to a pressurized filtration plant that includes: a sealed tank (1) in which discs (2) are provided including filtering sectors (20) carried by a rotary shaft (3) and connected to collectors within said shaft, a dispenser (10) enabling the egress of filtrates, the discharge of spinning air and the intake of blowing air for releasing the spun cakes, at least one duct for supplying a liquid laden with solid particles, at least one duct or discharging the filtrates, and a hopper (1b) for recovering the solid particles, characterized in that the discs (2) are vertically arranged so that the lower portion thereof is submerged in buckets (4) covered with deflectors (41) and including means for scrapping solid material deposits on the outer walls thereof.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: November 19, 2013
    Assignee: Gaudfrin
    Inventor: Guy Gaudfrin
  • Publication number: 20130270172
    Abstract: A radial seal is described for use in a filtration system having annular elements. The rings or annuli fit in a groove in an outer surface of a seal plate. Each annulus has an outer diameter larger than the inner diameter of a cylindrical housing of the filtration system. A gap in the annulus has a width selected to enable the annular element to deform sufficiently to permit insertion of the at least one annulus into the cylindrical housing. Two or more annuli can be configured such that the gaps of the annuli are misaligned when both annuli are installed in the groove, thereby minimizing leakage in operation. A registration system includes a registration element that cooperates with a registration element of the other annulus to ensure misalignment of the gaps of the pair of annuli.
    Type: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter F. Metcalfe
  • Patent number: 8556086
    Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in the outer periphery thereof with plural pores for separating via the plural pores a solid substance from a solid-liquid substance disposed outside the rollers and filtering a liquid substance toward inside the rollers, inside drums each disposed along the inner circumference of each of the rollers, and a passageway which is formed by means of the screen and the inner drum and which is provided with an outlet. The liquid substance separated by means of the screen is allowed to flow along the passageway, collected at the outlet and discharged from the outlet.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 15, 2013
    Assignee: Takai Tofu & Soymilk Equipment Co.
    Inventors: Toichiro Takai, Satoshi Ueda, Toru Awazu, Motonari Amano, Kenji Kasama, Masahiro Yoshida, Masaaki Watanabe
  • Patent number: 8505740
    Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in an outer periphery thereof with plural pores, a supply device disposed outside the rollers for supplying into the casing under appropriate pressure a solid-liquid mixture to be separated into a solid component via the plural pores and a liquid component filtered inside, a casing wall disposed adjacent to the rollers after the solid-liquid mixture supplied with the supply device is passed through the rollers rotated, a discharge window formed in the casing wall for discharging the solid component, and a pressure application lid formed on the casing wall for stably applying prescribed pressure in a direction of closing the discharge window with a pressure application device.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 13, 2013
    Assignee: Takai Tofu & Soymilk Equipment Co.
    Inventors: Toichiro Takai, Satoshi Ueda, Toru Awazu, Motonari Amano, Kenji Kasama, Masahiro Yoshida, Masaaki Watanabe
  • Patent number: 8425771
    Abstract: A portable device for filtering and purifying water comprised of an outer chamber and an inner chamber that is slidable within a section of the outer chamber, and a small pore size pre-filter, whereby water is drawn through the pre-filter into the first container section of the outer chamber where it is isolated and treated with a disinfectant agent, then is drawn out of the first container section and into the second container section, and then into the inner chamber, where it is passed across another filtering material such as an activated carbon bed, removing any remaining contaminants before the potable water exits through a mouthpiece.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: April 23, 2013
    Assignee: Miracle Straw Corporation, Inc.
    Inventors: Paul W. O'Brien, Mogens Engel
  • Patent number: 8414765
    Abstract: A system for processing cells is disclosed. The system may include a container having an inner wall, a plunger adapted to be slidably positioned within the container, at least one inlet port through which a fluid can enter the container, at least one outlet port through which a fluid can exit the container, at least one effluent port through which an effluent can exit the container, a first check valve in fluid connection with the inlet port and a second check valve in fluid connection with the effluent port. The plunger may include a filter that allows fluid to pass therethrough but prevents cells from passing therethrough. Rearward motion of the plunger may be adapted to draw fluid into the system via the inlet port and forward motion of the plunger may be adapted to force effluent out of the system via the effluent port.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: April 9, 2013
    Assignee: Medrad, Inc.
    Inventors: Arthur E. Uber, Mark Trocki, Frederick W. Trombley
  • Patent number: 8394268
    Abstract: A portable device for filtering and purifying water comprised of an outer chamber and an inner chamber that is slidable within a section of the outer chamber, and a small pore size pre-filter, whereby water is drawn through the pre-filter into the first container section of the outer chamber where it is isolated and treated with a disinfectant agent, then is drawn out of the first container section and into the second container section, and then into the inner chamber, where it is passed across another filtering material such as an activated carbon bed, removing any remaining contaminants before the potable water exits through a mouthpiece.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 12, 2013
    Assignee: Miracle Straw Corporation, Inc.
    Inventors: Paul W. O'Brien, Mogens Engel
  • Patent number: 8348063
    Abstract: The invention relates to a backflush device (6) for a filter system (1) for removing impurities from a fluid, the backflush device (6) serving to backflush a filter body (3) in the filter system separating the clean side (5) from the inlet side (4), and comprising at least one backflush nozzle (7) for applying a rinse medium to the filter body (3), said nozzle comprising at least one opening (8) through which the rinse medium flows in a flow direction (9) during backflushing and exits the backflush nozzle (7). In order to improve the effectiveness of the backflushing, the at least one opening is designed as a slit opening (8) extending transverse to the flow direction (9) in a straight line having a constant cross-sectional profile (16) comprising a nozzle segment (17) expanding the flow direction (9).
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: January 8, 2013
    Assignee: Mahle International GmbH
    Inventors: Markus Pracher, Albert Schick, Dietrich Stötzer
  • Patent number: 8318011
    Abstract: A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is initially passed across a pre-filter secured over the inlet to the first chamber and having a very small pore size and an inner cavity in which a disinfecting agent is place to filters most contaminants before the water is drawn into said filtering device, and once in the first holding chamber the water is isolated and may be further treated with a disinfectant agent, and then is passed though at least additional filtering substance including an activated carbon or nano-filter.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: November 27, 2012
    Assignee: Miracle Straw Corporation, Inc.
    Inventors: Paul W. O'Brien, Mogens Engel
  • Patent number: 8313644
    Abstract: A portable vessel for fluids has an integrated filtration system. A pressing assembly fitted to the vessel includes a stopper, a rod having a top end and a filtration assembly. A vessel top receives the pressing assembly such that the rod of the pressing assembly is slidably attached to a bearing of the vessel top. A gasket attached to the filtration element maintains a seal between the inner surface of the vessel and an outer perimeter of the filtration assembly and the orientation of the rod is maintained by the gasket and the bearing. In use, pressure applied to the pressing assembly drives the filtration assembly through the vessel causing water to be filtered as it passes through the filter element.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: November 20, 2012
    Assignee: OZOlab
    Inventors: Jordan Harris, Roo Rogers, Yves Behar, Joshua Morenstein, Serge Beaulieu, Jennifer Olson
  • Patent number: 8302780
    Abstract: An industrial separator and dewatering plant has a filtering portion using an inclined conveyor belt for carrying away a watery cake from an aqueous mixture containing solid matter. The filtering portion further has a wash water spray nozzle directed at the conveyor belt so as to dislodge the watery cake penetrated within the conveyor belt. A dewatering portion has a compression auger screw positioned for receiving the dislodged watery cake and the wash water. An auger screw receives the wash water and cake which is transported to a compression cage where compression drives water out of the cake leaving a semi-solid cake which is pressed against a door where it exits the plant.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 6, 2012
    Assignee: M2 Renewables, Inc.
    Inventors: John Christopher Mitchell, Ken M. Stedman, Glenn Edwin Walser
  • Patent number: 8216462
    Abstract: A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is passed across a micro-filter positioned within a section of the second chamber through which water can be forced by said pumping action to an outlet for purified water.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: July 10, 2012
    Inventors: Paul W. O'Brien, Mogens Engel
  • Publication number: 20120160748
    Abstract: In at least one embodiment, a filter device for filtering out of solid substance from a solid-liquid-mixture where the filter device includes a bearing shaft; a rotation body attached to the bearing shaft and supported by the bearing shaft to be rotatable; a single filter cell formed on the rotation body with a filter structure attached to the rotation body for filtering out the solid substance and a connection channel formed in the rotation body that extends from a filter structure outlet side to an outlet opening formed adjacent to the bearing shaft and via which the connection channel is permanently connected with an intermediate connection channel formed in the bearing shaft; a liquid discharge line connected with or formed by the intermediate connection channel; a plurality of branch-off lines which are branched-off from the liquid discharge line; and a control device having a valve assembly.
    Type: Application
    Filed: December 26, 2011
    Publication date: June 28, 2012
    Inventors: Gunnar Grim, Bruno Hegnauer
  • Publication number: 20120160761
    Abstract: In at least one embodiment, a filter device for filtering out of solid substance from a solid-liquid-mixture, including a bearing shaft extending along a rotation axis; a rotation body detachable from the bearing shaft and supported by the bearing shaft to be rotatable about the rotation axis; one or more filter cells formed on the rotation body and each includes a filter structure attached to the rotation body for filtering out the solid substance and allowing the liquid to pass from an inlet side to an outlet side, and a connection channel formed in the rotation body and that extends from the outlet side to an outlet opening which is formed on an axial side of the rotation body in a radial distance to the rotation axis; and a control device having a structural control unit for providing a connection between the respective outlet opening and a plurality of lines.
    Type: Application
    Filed: December 26, 2011
    Publication date: June 28, 2012
    Inventors: Bruno Hegnauer, Gunnar Grim
  • Patent number: 8123047
    Abstract: The invention relates to a filter for fluids in conduits, consisting of: a tubular filter housing (1); a filtering basket (9) that is coaxial with the filter housing (1) and that is positioned to rotate; a stationary flushing connection (16) for removing substances that have been retained by the filtering basket (9), said connection covering successive parts of the filtering basket (9) and being connected to means for removing the substances. To achieve a simple construction for the filter, increased operational safety for the drive components and the rotational mounting of the filtering basket (9), in conjunction with reduced production and maintenance costs, a fluid-proof drum motor (3) is coaxial with the filter housing (1) and the filtering basket (9) is fixed to the drum (4) of said motor.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: February 28, 2012
    Assignee: Taprogge GmbH
    Inventors: Guido Keller, Dirk Trostmann
  • Patent number: 8087516
    Abstract: A new device, method, and system are disclosed that provide for removal of undesired materials from a contaminated fluid. Materials present in the fluids are kept in motion in one or more filter cassettes that include disc aerators that improve contact times with the sorbents and that rotate the filter media to pump contaminated water through the filter media for treatment of the contaminated fluids. The device and system provide containment of sorbent fines that keeps the filter media free from clogging.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: January 3, 2012
    Assignee: Battelle Memorial Institute
    Inventor: Henry O. Pate
  • Patent number: 8025156
    Abstract: A vertical cylindrical dewatering apparatus for dewatering fibrous slurries, slurry of manure and water, or other similar slurries. The apparatus includes a housing that includes a defined chamber having an enclosed top end with a slurry injector into the chamber, a centrally disposed first filtering element that includes first and second flightings, and a second vertical cylindrical filtering element including a support grid. The first and second filtering elements define the chamber. The slurry in-flow port at the top of the apparatus directs the slurry spiraling down between the flightings. The particles start building up at the bottom of the chamber as the water is filtered out from the housing through filtrate drains. Compressed air supplied through a rotating seal down through the centrally disposed filtering element moves through the filter, and through the particles forcing the water from between the particles out through the outer filter element.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: September 27, 2011
    Inventor: Floyd G. Tapp
  • Patent number: 7882960
    Abstract: The invention relates to an apparatus for continuous separation of dry matter from a fluid, comprising an enclosed environment capable of being under vacuum or under positive pressure, in which enclosed environment a number of rollers (1, 3, 4, 4?, 6, 6?, 20, 21, 22, 23) form a chamber which is divided into two or more compartments (12, 13, 24, 27, 25, 26) by filtration means (7, 8, 16, 29, 36, 37, 38, 40), wherein one or more filtrated chambers (9, 10) are placed on the pure side of the filter means. In order to allow for cleaning and/or maintenance of the filtrate chambers, additional filtrate chambers are provided, which are separated from the first filtrate chambers by a wall. One of the filtrate chambers at any time is placed under the filter, while the other filtrate chambers are situated outside the enclosure for maintenance/cleaning.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: February 8, 2011
    Assignee: Danmarks Tekniske Universitet
    Inventors: Preben B. Hansen, Peter Stubbe, Hanne Birch, Kirsten G. Sorensen
  • Patent number: 7763172
    Abstract: A filtering device includes a container having an inlet and two or more spindles arranged in the device. Further included are at least two mutually axially offset diaphragm plates mounted on each of the two or more spindles. The two or more spindles are distributed in the container and rotatable relative to the container.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: July 27, 2010
    Assignee: Westfalia Separator AG
    Inventors: Wilfried Mackel, Tietz Helga
  • Patent number: 7753214
    Abstract: A liquid extraction unit for extracting liquid from an aqueous material is described. The unit includes a filter that is configured to allow passage of the liquid and prevent passage of the aqueous material. The unit also includes a first vacuum that is configured to extract air from the extraction unit. The unit further includes a second vacuum that is configured to pull the liquid through the filter. The first vacuum and the second vacuum are located after the filter.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 13, 2010
    Assignee: Concrete Slurry Environmental, Inc.
    Inventor: Charles Davie Tomlinson
  • Patent number: 7727133
    Abstract: Apparatus for creating a seal between an axle journal and a bearing housing is disclosed, particularly for use in apparatus for dewatering or washing material suspensions. The apparatus includes a stator ring, a pair of diagonally disposed guide pins supporting the stator ring with respect to the bearing housing so that the stator ring can be angled in a plane with respect to the pair of guide pins, a sealing ring for creating a seal between the stator ring and the axle journal, a bellows for creating a seal between the bearing housing and the stator ring, and at least one resilient member for urging the stator ring in abutment against the sealing ring.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: June 1, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Jörgen T. Lundberg, Fredrik Pontén
  • Patent number: 7651619
    Abstract: A method and an apparatus for separating dry matter from liquid includes an enclosed separation environment capable of being pressure regulated. Within the enclosed separation environment, a suspension is brought into contact with at least one filter so as to accumulate dry matter on the at least one filter. The filter with the dry matter passes through at least one set of rollers such that liquid is removed from the dry matter on the at least one filter to form a substantially dry filter cake. Thereafter, the substantially dry filter cake is removed from the at least one filter. The above steps are performed in the enclosed separation environment either under vacuum or overpressure. The invention may be used in various fields such as the food industry.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: January 26, 2010
    Inventors: Preben Bøje Hansen, Peter Stubbe, Hanne Birch, Kirsten Grønning Sørensen
  • Patent number: 7638051
    Abstract: A filter apparatus in a container containing non-clarified contaminated liquid, especially wastewater, for clarifying this liquid consists of several spaced filter elements arranged in a circle or a polygon on a rotatably supported hollow shaft. The filter elements are connected to the hollow shaft in order to remove clarified liquid as permeate through the hollow shaft out of the container via a stationary pipeline. The rotating hollow shaft separates the wastewater from the permeate via at least two sealing elements. A blocking medium is arranged between the sealing elements.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: December 29, 2009
    Assignee: Hans Huber AG Maschinen-und Anlagenbau
    Inventor: Bernhard Stadler
  • 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: 7029584
    Abstract: A device for filtering liquids comprising two shafts which are parallel to each other or at an acute angle wherein each shaft carries a stack of disks that extend perpendicularly to the shaft axis and are rotated thereby. The disks of one stack are engaged in the intermediate spaces of an adjacent disk stack and at least one of the shafts is driven. At least one of the shafts is hollow and is provided with bores and some of the disks have channels therein which are fluidly connected to the inside of their respect hollow shaft. A support ring is oversized in relation to the shaft so that a channel is formed between the inner surface of the support ring and the outer surface of the shaft and this channel extends over at least part of the length of the shaft.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: April 18, 2006
    Assignee: aaflowsystems GmbH & Co. KG
    Inventors: Dieter Bläse, Hans Olapinski, Hans-Peter Feuerpeil
  • Patent number: 7005067
    Abstract: A positive pressure disc-type filtration apparatus including a collection trough internal to the cylindrical pressure vessel housing the filter discs. The collection trough is entirely disposed within the cylinder of the pressure vessel and configured and located to receive and direct filter cake removed from the discs and then reslurried and sluiced toward the center of the trough using jets of liquid, to be discharged longitudinally centrally through a single outlet extending downwardly from the trough and through the wall of the pressure vessel. A method of filtration is also disclosed.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: February 28, 2006
    Assignee: GL&V Management Hungary KFT
    Inventor: Peter J. Flanagan
  • Patent number: 6890437
    Abstract: A waste disposal and recovery system for disposal of expanded polystyrene foam and recovery of a usable resin. The system includes a first tank and a second tank in flow communication. Within the second tank may be a plurality of settlement compartments with a filtration system. An organic solvent is used to dissolve the expanded polystyrene foam which forms a waste solution. The waste solution is directed to the second tank where it is separated into resin and the organic solvent. The solvent may be recycled for use in dissolving more expanded polystyrene foam while the resin may be removed for storage, shipment or sale.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: May 10, 2005
    Assignee: Densified Solutions, L.L.C.
    Inventors: John W. Rickett, Kevin L. Lyons
  • Patent number: 6872301
    Abstract: A high shear rotating disc filter having a hollow interior and constructed of a porous material such as sintered metal or ceramic with finely structured openings. The disc is mounted and secured onto a hollow shaft. The hollow shaft is connected to a vacuum source, external to the filter, that allows for the passage of the filtrate to a receiver. There are elongated slots in the wall of the shaft which provide the passage of filtrate from the disc. The shaft provides rotational force for the discs.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: March 29, 2005
    Inventor: Anthony Schepis
  • Patent number: 6846421
    Abstract: A liquid filter method includes use of a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via an inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air. A hose seal for the cover is mounted to the filter belt to be moved in and out by the belt movement, allowing cleaning of the seal. A double loop hose seal creates an intervening space into which liquid is directed to minimize air leaks.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: January 25, 2005
    Inventor: Jack R. Bratten
  • Patent number: 6811639
    Abstract: A process for producing a sealed crimp joint between two substrates, each substrate having a predefined crimp area utilized to form the crimp joint. The process includes the steps of: a) applying a photocurable sealant composition to a portion of the crimp area of at least one of the substrates, b) irradiating the photocurable sealant in place on the substrate to fully cure the sealant, and then c) forming a crimp joint between the two substrates utilizing the respective crimp areas thereof. The process is suitable for forming crimp joints between housing parts of an oil filter.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: November 2, 2004
    Assignee: Henkel Corporation
    Inventors: Paul Chaplinsky, Jr., James A. Serenson
  • Patent number: 6796435
    Abstract: A solid-liquid separating apparatus comprising a cylindrical strainer formed by circular ring members with gaps in between, a casing having the strainer therein, and scrapers disposed in the respective gaps between the circular ring members for removing solid matter adhering to the end (flat) surfaces of the circular ring members. Each of the scrapers comprises a flat auxiliary circular ring member and a flat protruding element. The external diameter of the auxiliary circular ring member is smaller than the external diameter of the circular ring members and is larger than the internal diameter of the circular ring members, and the protruding element extends from the outer circumferential surface of the auxiliary circular ring member. The auxiliary circular ring members are disposed coaxially with the circular ring members, and the tip ends of protruding elements reach the outer circumferences of the circular ring members.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: September 28, 2004
    Assignee: Izumi Products Company
    Inventor: Shunji Izumi
  • Patent number: 6666976
    Abstract: A self-cleaning water filter, coupled to a water flow having particulates therein, that includes a pair of canisters, each having a cylindrical wedge wire water filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of the water flow into the two dislodge subchambers. The particulate contaminants and the limited amount of water then pass through the apertures at a high velocity and into the drain subchamber which exits through the drain.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: December 23, 2003
    Inventors: James Benenson, Jr., David A. Laing
  • Patent number: 6655531
    Abstract: An assembly for separating solid phase material from a slurry that comprises a pressurized filtration unit including a vessel and filter media. A slurry is fed to the filtration unit where it is separated into a solid phase material and a liquid phase material. The filtration unit has a solid outlet for discharging the solid phase material to a material transport. The material transport moves the solid phase material to a depressurizing chamber that has a lower pressure than the filtration unit. As the solid phase material enters the depressurizing chamber it is exposed to the lower pressure of that chamber. The material transport maintains the pressure difference between the filtration unit and the chamber. Subsequently, the depressurized solid phase material can be conveyed to other equipment for drying or other processing.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: December 2, 2003
    Assignee: Baker Hughes Incorporated
    Inventors: Jon O. Beard, John C. Rogers
  • Patent number: 6622870
    Abstract: A filtering device for separating liquid and solid material from a mixture consists of an endless filter belt. Filtrate is separated off by means of the pressure difference above and below the filter belt. The device is placed in a high pressure space in order to keep liquid substances which at ambient temperature and atmospheric pressure would become gaseous. The applied pressures can rise to roughly 20 bar.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: September 23, 2003
    Assignee: Pannevis B.V.
    Inventor: Alphons Arnoldus Johannes Antonius Prinssen
  • Patent number: 6604743
    Abstract: The replaceable wearing surface is for a sealing arrangement on drum end walls on a press drum that de-waters fiber suspensions radially into the drum through the shell of the drum. The wearing surface of the sealing arrangement has a wear ring and holder members. The wear ring is, on a side that faces into the drum from the drum end-wall, provided with locking members. The locking members are arranged parallel to the drum axis and are preferably in the form of knob-shaped locking members. The arms of the holder members are designed to engage the locking members. The holder members are fastened to the drum end wall by suitable fixing members.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: August 12, 2003
    Assignee: Kvaerner Pulping AB
    Inventors: Stefan Hansson, Bo Clarstrom, Johan Eriksson
  • Publication number: 20030121843
    Abstract: A liquid filter method includes use of a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via an inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air. A hose seal for the cover is mounted to the filter belt to be moved in and out by the belt movement, allowing cleaning of the seal. A double loop hose seal creates an intervening space into which liquid is directed to minimize air leaks.
    Type: Application
    Filed: December 16, 2002
    Publication date: July 3, 2003
    Inventor: Jack R. Bratten
  • Patent number: 6543624
    Abstract: The aim of the invention is to improve the backwashing action of a backwashable filter for liquids comprising the following: a filter body which is located in a housing and which separates an incoming flow chamber from an outgoing flow chamber and a backwashing channel which lies adjacent to the filter body, is situated in the outgoing flow chamber and has a backwashing opening that faces towards the filter body, said backwashing channel also communicating with a source of a cleaning medium and said cleaning medium being subjected to pressure in the backwashing channel, and the filter body and the backwashing channel being moveable in relation to each other. To this end, the filter body has links on a side facing towards the backwashing channel which are set apart from each other in the direction of motion.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: April 8, 2003
    Assignee: Mahle Filtersysteme GmbH
    Inventor: Heinz Geisbauer
  • Patent number: 6495031
    Abstract: A liquid filter apparatus includes a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via on inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 17, 2002
    Inventor: Jack R. Bratten
  • Patent number: 6488849
    Abstract: The present invention relates to a rotating device for continuously filtering a liquid such as a solution containing a precipitate.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: December 3, 2002
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventors: Gérard Bertolotti, Yves Lebiez
  • Patent number: 6409929
    Abstract: Apparatus and a method are presented for the mechanical removal of moisture from a filter cake. Differential pressure causes the flow of a treatment fluid through the filter cake. The treatment fluid displaces liquid originally present in the filter cake to prevent cracking of the filter cake.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: June 25, 2002
    Assignee: BOKELA Ingenieurgesellschaft fur Mechanische Verfahrenstechnik mbH
    Inventors: Reinhard Bott, Robert Kern, Thomas Langeloh
  • Publication number: 20010003330
    Abstract: Apparatus and a method are presented for the mechanical removal of moisture from a filter cake. Differential pressure causes the flow of a treatment fluid through the filter cake. The treatment fluid displaces liquid originally present in the filter cake to preent cracking of the filter cake.
    Type: Application
    Filed: March 11, 1997
    Publication date: June 14, 2001
    Inventors: REINHARD BOTT, ROBERT KERN, THOMAS LANGELOH
  • Patent number: 6241101
    Abstract: An installation for separating and purifying solids from a suspension and/or for leaching out solid particles has a cylinder and a piston movable therein. A sealing part of the piston is in contact with the interior wall of the cylinder. A filter is positioned some distance away from the sealing part of the piston. A discharge chamber is located between the filter and the sealing part of the piston. A pump chamber is formed below the sealing part of the piston and a washing column chamber containing a packed bed of solid particles is formed above the filter. During a downward pump stroke of the piston, suspension is forced, via at least one connecting channel between the pump chamber and the washing column chamber, to the washing column chamber. During a compression stroke, liquid is brought via the filter to the discharge chamber and discharged via a discharge line. Solid particles, such as crystals, remain behind on the filter and are compressed against the packed bed.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: June 5, 2001
    Assignee: Niro Process Technology B.V.
    Inventor: Jacobus Petrus Roodenrijs
  • Patent number: 6235209
    Abstract: An auxiliary filter for removing residual particles from already filtered cutting fluids used in metal cutting machines, the auxiliary filter including a hollow wheel member rotated in a sealed tank into which the filtered liquid flows. Pressurized liquid passes through a fine screen on the perimeter of the rotating wheel to capture any residual particles. A high pressure backwash jets are directed at the screen as it rotates past an array of nozzles, and a collection trough draws any dislodged material away and out of the tank.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: May 22, 2001
    Inventor: Jack R. Bratten
  • Patent number: 6177022
    Abstract: A self-cleaning fuel oil strainer, coupled to a continuous fuel flow, that includes a pair of canisters, each having a cylindrical wedge wire fuel oil filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of fuel oil into the two dislodge subchambers. The particulate contaminants and the limited amount of fuel oil then pass through the apertures at a high velocity and into the drain subchamber which exits through the drain.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: January 23, 2001
    Inventors: James Benenson, Jr., David A. Laing
  • Patent number: 6033579
    Abstract: The invention covers a process for dehydration/filtration, and washing of red mud, if applicable with addition of sand, particularly from the Bayer process for aluminum production from bauxite, in which filters are used and caustic is washed out on the filter. The invention is basically characterized by washing and dehydration being effected under pressure above atmospheric with regeneration of bound caustic and production of a residue with a high solids concentration. In addition, the invention covers a plant for the implementation of the process.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: March 7, 2000
    Assignee: Andritz-Patentverwaltungs-Gesellschaft m.b.H
    Inventors: Hubert Riemer, Nils Oeberg, Heinz Perchthaler, Paolo Murgia, Mario Noriega
  • Patent number: 5975311
    Abstract: A filter includes, in a filter body, a filter unit in the general form of a wheel with, for local contraflow circulation of a cleaning fluid through its filter element, a circulation unit to which a pipe is connected. The pipe is an inlet pipe of the cleaning fluid and, on the other side of the filter unit to the circulation unit there is locally interposed in the filter body an interceptor plate, with, connected laterally to the filter body, between the filter element of the filter unit and the interceptor plate, a pipe which is an outlet pipe for the cleaning fluid. Applications include heat exchangers in which solid cleaning elements circulate, for retaining and recycling the latter.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: November 2, 1999
    Assignee: E. Beaudrey & Cie
    Inventor: Philip Jackson