Including Non-self-supporting Medium Patents (Class 210/317)
  • Patent number: 10267277
    Abstract: An in tank depth media fuel filter assembly includes a closed body having an interior and an exterior. The closed body has a first composite panel of filtration media and a second composite panel of filtration media. Each of the composite panels includes and outer support layer and at least three inner layers of filtration material including at least two spunbonded layers of synthetic filaments and at least one layer of wetlaid synthetic fibers. An opening is provided in the body for providing fluid communication with the interior thereof.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: April 23, 2019
    Assignee: Delstar Technologies, Inc.
    Inventors: Dale Ray Estepp, Andrew Gordon Platt
  • Patent number: 10196281
    Abstract: Provided is an outdoor water purifier with backwashing function relating to a mini outdoor portable backwashing water purifier. It comprises a raw water inlet apparatus comprising a raw water inlet channel and a water inlet one-way valve device provided on the raw water inlet channel; a filtering apparatus comprising a filtering chamber and a filter core assembly provided therein, provided behind the water inlet one-way valve device and communicating with the raw water inlet apparatus; a piston apparatus comprising a piston cylinder, a piston located in the chamber of the piston cylinder, a piston rod and a handle, the piston cylinder chamber communicating with the filtering apparatus; and a purified water outlet apparatus comprising a purified water outlet channel provided with a water outlet one-way valve device, and a purified water outlet provided with a switch device. It further comprises a backwashing drainage apparatus communicating with the filtering apparatus.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: February 5, 2019
    Assignee: DONGGUAN DIERCON TECHNOLOGY CO., LTD.
    Inventor: Yinhuan Sun
  • Patent number: 9670076
    Abstract: An adaptable water filtration device including an upstream housing defining an upstream chamber. A filter mount is coupled to the upstream housing and extends into the upstream chamber. A first filter is removably disposed in the upstream chamber and is detachably engaged with the filter mount. The first filter is configured to filter a first contaminant from the contaminated water. A second filter is removably disposed in the upstream chamber and is detachably engaged with the filter mount. The second filter is downstream of the first filter and configured to filter a second contaminant from the contaminated water through adsorption. The water filtration system is configured to enable selective adaptation of the filtering characteristics thereof by a user by selectively disposing the first and second filters in the upstream chamber to achieve a prescribed filtering effect on the contaminated water. A prefilter may be included to prevent downstream clogging.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: June 6, 2017
    Inventors: Pasupathicoil Ramaswamy Soundar Rajan, Sowmya Soundar Rajan
  • Patent number: 8758607
    Abstract: Apparatus for treating run-off water, the apparatus including a mechanical-sorption filter for removing particulate and colloidal material; an ion exchange filter for removing positively charged ions; and, a sorption filter for removing at least other soluble contaminants.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: June 24, 2014
    Assignee: GHD Pty Ltd.
    Inventor: Konstantinos Athanasiadis
  • Patent number: 8658036
    Abstract: A filtration and demineralization apparatus 10 including a vessel 20 in a form of a body of revolution; a hollow columnar body 40 that is located in an internal space of the vessel 20, one end 40a of the columnar body being connected to an inner surface of the vessel 20 along an entire circumference of the end, and the other end 40b of the columnar body forming an opening; and a partition plate 44 that is connected to the other end 40b of the hollow columnar body along an entire circumference of the other end 40b, the partition plate being configured to separate an inside space or an outside space of the hollow columnar body 40 as an independent space in the vessel. The partition plate 44 has a circulation port 43 that allows water that is to be treated to pass therethrough.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: February 25, 2014
    Assignee: Organo Corporation
    Inventors: Mitsuru Yoden, Satoshi Kasahara, Mikio Sugano
  • Patent number: 8354021
    Abstract: A system of water collecting, cleaning, and storing comprises a top-opened water storing container (1), with the wall of which a watertight structure; a collecting well (2) provided in the water storing container (1), which has a lid (6) and has a wall of permeable structure through which water exchange between the water storing container (1) and the collecting well (2) is achieved; filling elements (4) filled between the collecting well (2) and the water storing container (1), on top of which a pervious surface layer (5) is paved.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: January 15, 2013
    Assignee: Beijing Rechsand Science & Technology Group Co., Ltd
    Inventor: Qin Shengyi
  • Patent number: 8349181
    Abstract: A filter cartridge, which is suitable in particular for purifying dental waste waters, has a housing with three different spatial regions which receive three different filter materials having different filter properties. The first filter material is preceded by a sedimentation space.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: January 8, 2013
    Assignee: Duerr Dental AG
    Inventor: Eberhardt Nonnenmacher
  • Patent number: 8323493
    Abstract: A filtering system having a housing forming a cavity with a fluid inlet and outlet remote therefrom with a partially porous basket filled with particulate or granular polymer filtering material and the basket surrounded by a bag filter. The housing inlet receives effluent from a strainer. The particulate may be filled in a monofilament polyethylene woven mesh sleeve in the form of a removable cartridge. A pump supplied fluid to be filtered through the strainer and filter housing. The system may be mounted on a wheeled cart for portability; and, in one exemplary version, includes a wastewater reservoir connected to the strainer inlet.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: December 4, 2012
    Assignee: Eaton Corporation
    Inventors: Mark Anthony Quintel, Derek Ronald Thelen, Christopher Scott Rau, Richard Bradley Jacobs
  • Patent number: 8142654
    Abstract: A disposable and recyclable water bottle formed of a non-toxic plastic composition includes a flexible sidewall, a neck with an open top and cap, and an open bottom end. A filter cartridge is received within the open bottom and contains activated carbon sandwiched between 0.7 to 50 microns filtration membranes, all contained between upper and lower perforated plates. A lower portion of the filtration cartridge provides a filling chamber for receiving a flow of unfiltered water on to the lower perforated plates for passage through the filter. An arrangement of slots in the walls of the filling chamber allows a portion of the flowing water to bypass the filter in order to prevent overflow when filling the bottle. A cap containing internal screw threads attaches to the external screw threads of the open bottom end, sealing the interior of the bottle. Once sealed, the contained water is allowed to move around in a fluid motion between the interior of the bottle and the filling chamber.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: March 27, 2012
    Inventor: Abraham K. Kohl
  • Patent number: 8114287
    Abstract: A filtration appliance comprised of two types of convening disks, whereon opposing, contacting surfaces are textured or channeled, purveying passage and filtration of fluids traversing between the convening disks. A plurality of parallel, spiraling grooves on both sides of conveyance disks purvey channeling for fluid ingress and egress, inlet grooves spiral radially inward from the outside circumference, decreasing in width until terminating prior to the inside circumference, outlet grooves spiral radially outward from the inside circumference, decreasing in width until terminating prior to the outside circumference. Topologic disks conveying homogeneously textured surfaces for filtration sandwich conveyance disks. The textured topologic surface is pressed upon the conveyance surface between the grooves.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: February 14, 2012
    Assignee: Layne Christensen Company
    Inventor: James Jeffrey Harris
  • Patent number: 8097155
    Abstract: An above ground water clarifier is described. The clarifier includes a spray system for receiving water from an external system and disposing the water onto a filter tray rack. A first recovery chamber is positioned below the filter tray rack for receiving filtered water that is gravity fed through the filter tray rack. A second recovery chamber is positioned adjacent to and fluidly connected with the first recovery chamber. The first and second recovery chambers are formed to filter out solids and/or oils before passing the water to a sump chamber and/or the sewer. The sump chamber includes a plurality of tiered pumps for pumping the water back to the external system.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: January 17, 2012
    Inventor: G. Thomas Ennis
  • Patent number: 7998347
    Abstract: An assembly for filtering contaminants from automatic transmission fluid includes a housing including a first inlet and a second inlet, through which fluid enters the housing, and an outlet, through which fluid exits the housing; a first media filter located within the housing in a first fluid flow path between the first inlet and the outlet; and a second media filter located within the housing in a second fluid flow path between the second inlet and the outlet.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: August 16, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Lev Pekarsky, Robb D. Pratt
  • Patent number: 7875178
    Abstract: A drain basin insert having a housing, with the housing having a sidewall having a top edge and a bottom edge, and with the housing having a perforated base member secured to the sidewall at the lower edge of the sidewall, and with the housing having an outwardly extending flange at the top edge of the sidewall. The insert also includes a secondary filter means having a permeable container having hydrophobic filter media therein. The insert also has a perforated, rigid structural member having a bottom wall and a raised portion, with the raised portion attached to the bottom wall and extending upwardly therefrom. The insert also has a primary filter means having an outer sidewall, a bottom surface, and a central portion, with the bottom surface contacting the bottom wall of the perforated structural member, and with the central portion contacting the raised portion of the perforated structural member.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: January 25, 2011
    Assignee: ADS Structures, Inc.
    Inventor: Courtney Ashliman
  • Patent number: 7862714
    Abstract: The present invention is a reclamation unit (1) for a liquid comprising a housing (4) with a detachable upper (2) and lower (3) part in which the lower part (3) is connected with a base part (13). The lower part (3) comprises at least one heating unit (17) and inlets (14) and outlets (15,34). The upper part (2) encloses at least one filter unit (8). The lower part (3) and the base part (13) form an evaporation chamber (27), wherein the connection between the lower part (3) and the base part (13) includes a separator plate (19) which guides the liquid from the filter unit (8) onto side walls (37) of the evaporator chamber (27). The heating unit (17) protrudes into the evaporator chamber (27) with no conductive contact to the side walls (37).
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: January 4, 2011
    Assignee: Greenoil Standard APS
    Inventors: Lars Brejnbjerg, Bjarne Egelind
  • Patent number: 7837870
    Abstract: An ion-removing apparatus includes a housing, a first ion-removing unit and a second ion-removing unit. The housing includes an inlet port, a liquid discharge port and a gas discharge port. The first ion-removing unit is disposed within the housing, so that the fluid that has entered the housing via the inlet port flows through the first ion-removing unit. The first ion-removing unit serves to remove a first ion, such anions, contained in the fluid. The second ion-removing unit is disposed within the housing, so that the fluid that has flown though the first ion-removing unit flows through the first ion-removing unit. The second ion-removing unit serves to remove a second ion, such as cations contained in the fluid. The liquid contained in the fluid that has flown through the second ion-removing unit is discharged from the liquid discharge port. The gas contained in the fluid that has flown through the second ion-removing unit is discharged from the gas discharge port.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: November 23, 2010
    Assignees: Toyota Boshoku Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki, Hiroyuki Sekine
  • Publication number: 20100264077
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Application
    Filed: June 30, 2010
    Publication date: October 21, 2010
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Publication number: 20100224545
    Abstract: Embodiments of the invention provide a membrane module including a first plurality of fibers capable of filtering fluids that are helically wound in layers creating a mono helix. Fluids to be treated can flow radially with respect to a longitudinal axis of the mono helix or parallel to the longitudinal axis of the mono helix. The membrane module can further include a second plurality of fibers that are helically wound with the first plurality of fibers to create a dual helix. The second plurality of fibers can have different properties than the first plurality of fibers in order to achieve different filtering functionalities.
    Type: Application
    Filed: January 6, 2010
    Publication date: September 9, 2010
    Inventors: Philip M. Rolchigo, John H. Burban, John Shanahan, Robert O. Crowder
  • Patent number: 7789926
    Abstract: In a filter housing (100) for at least one axial flow filter element (70) capable of receiving axial flow between its end faces and having at least one continuous sealing collar on its outer circumference which can be pressed against a sealing flange (17) on the housing, a plurality of filter elements (70) can be inserted side by side into cutouts (19) of a common clamping frame element (30). Each of the sealing collars rests on the clamping frame element (30) which is plane parallel to the at least one sealing flange (17) and displaceable toward the sealing flange (17) by a clamping device (50).
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: September 7, 2010
    Assignee: Mann + Hummel GmbH
    Inventors: Mario Rieger, Werner Blossey, Lorenz Eilert
  • Publication number: 20100147760
    Abstract: A filter assembly for removing contaminants from a fluid includes a filter housing, a filter cartridge, and a reticulated foam fluid treatment media. The filter housing has an inlet, an outlet and a chamber extending through the filter housing. The filter cartridge is positioned in the chamber of the filter housing and is constructed from a fibrous material used to filter contaminants from a fluid. The reticulated foam fluid treatment media is disposed within a passageway of the filter cartridge. The reticulated foam fluid treatment media includes a porous polymeric substrate having surfaces, including pore walls, and particles secured to the surfaces of the porous polymeric substrate via a binder, the particles being substantially uniformly distributed throughout the porous polymeric substrate via sonic vibration of the porous polymeric substrate and particles.
    Type: Application
    Filed: October 16, 2009
    Publication date: June 17, 2010
    Inventors: David Leavitt, John Famula, Christer Broman, Jeremy Hess, Elmo Walter Geppelt
  • Patent number: 7708883
    Abstract: A box filter comprises of a casing and at least two filters, which are installed inside the casing and behind the influx channel and have a buffer gap between two adjacent filters; the influx channel, which is installed on the external wall of the box filter. In addition, more than one guide vane is installed at the inlet of the influx channel and the bottom of the guide vane leans against the filter so as to eliminate the clog that forms the channel and so as to stop backflow of the sewage into the aquarium or container of the sift device while the box filter or sift device is removed from the aquarium. The guide vane can effectively improve drawbacks of the box filter of a prior art as well as enhance the filtration effect.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 4, 2010
    Inventor: Tommy Chi-Kin Wong
  • Patent number: 7658841
    Abstract: An oil-water separator for use in a trench, which surrounds an oilfield. The separator is positioned in the ground such that an inlet conduit extends at about the same level as the bottom of the trench. The trench water is admitted into the housing, where it contacts a plurality of buoyant oil-absorbing members, causing the oil particles to adhere to the surface of the oil-absorbing members. An outlet conduit located downstream from the oil-absorbing members is connectable to a pump to cause the oil-free water to be pumped from the housing and diverted away from the trench.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: February 9, 2010
    Inventor: Rene James Landry, Sr.
  • Patent number: 7527727
    Abstract: An adsorption apparatus and method of adsorption for treatment of wastewater is disclosed, and comprises an inlet for the wastewater connected to a metals trap which adsorbs metals and a second trap which filters organic materials from the wastewater, positioned between the inlet and the metals trap, wherein the second trap at least partially comprises either a phosphate or an activated carbon. The metals trap can be, for example, fish bone char. A method of manufacturing fish bone char is also disclosed.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: May 5, 2009
    Assignee: Plymouth Technology, Inc.
    Inventor: Geary G. Parke
  • Patent number: 7527739
    Abstract: An apparatus, system, and method are disclosed for multistage water separation. A first separation layer separates water droplets from a fuel flow by repelling the first water droplets. A coalescing layer may coalesce fine water droplets in the fuel flow. In one embodiment, a centrifugal separator directs the fuel flow tangentially to a filter wall and the centrifugal force of the fuel flow directed tangentially along the filter wall biases water droplets from the fuel flow. A second separation layer separates second water droplets from the fuel flow.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: May 5, 2009
    Assignee: Fleetguard Inc
    Inventors: Zemin Jiang, Ted S. Loftis, Mark J. Johnson, Barry M. Verdegan
  • Patent number: 7520392
    Abstract: A liquid filter element frame (7) is provided comprising an elongate injection moulded body, conveniently composed of a series of collinear injection moulded units (13). The frame has a plurality of support ribs (14) radiating from a central axis thereof and a support collar (17) encircling the outer edges of the ribs at the operatively upper end. The collar has formed integral therewith a plurality of radially inwardly directed support rails (18) having inner ends cooperating with the moulded body between adjacent support ribs thereof. Preferably, the collar has a number of inwardly extending support rails equal to the number of radially extending support ribs with the inner edges (19) of the support rails being received neatly in a corner formed between each pair of adjacent support ribs. The invention also provides a liquid filter including filter elements having such frames.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: April 21, 2009
    Assignee: Jonathan Schewitz Trust
    Inventor: Jonathan Schewitz
  • Patent number: 7510088
    Abstract: A water filter cartridge (10) has a two-piece housing (14, 18) internally configured with inlet and outlet openings (12, 16), a diffuser (42), and a plurality of diverter plates (56, 32) to optimize liquid flow and to regulate even flow through a charcoal filter medium (40) located inside of the housing.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: March 31, 2009
    Assignee: Conair Corporation
    Inventors: James Michael Smith, Theodore B. Mulle
  • Patent number: 7478729
    Abstract: A fuel-filtering device is disposed inside a fuel tank for filtering a fuel. The fuel-filtering device includes a filter body having a bag shape and a communication hole, and is formed of a plurality of laminated filter layers. The laminated filter layers includes an outside filter layer formed of a woven mesh, an inside filter layer formed of a non-woven fabric, and at least one intermediate filter layer disposed between the outside filter layer and the inside filter layer and formed of a non-woven fabric. The filter body is formed of at least one of a polyethylene fiber and a polypropylene fiber and has mesh sizes decreasing from the outside filter layer toward the inside filter layer.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: January 20, 2009
    Assignee: Nifco Inc.
    Inventors: Hiroji Sato, Kazumasa Kurihara, Yasutomo Kobayashi, Toshihide Kimisawa, Takeshi Kojima
  • Patent number: 7479225
    Abstract: A waste cement collection apparatus utilizing a porous disposable bulk bag for collecting waste cement removed as a result of wash-out of the discharge chute of a cement mixer truck after a cement delivery, the apparatus further having a method for filtering, collecting, and holding cement contaminated waste fluids for recovery and disposal. A service process is also described for the provision and recovery of the collection apparatus and the transport and disposition of the waste materials.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: January 20, 2009
    Inventor: Timothy Venable
  • Patent number: 7468129
    Abstract: An oil-water separator for use in a trench, which surrounds an oilfield. The separator is positioned in the ground such that an inlet conduit extends at about the same level as the bottom of the trench. The trench water is admitted into the housing, where it contacts a plurality of buoyant oil-absorbing members, causing the oil particles to adhere to the surface of the oil-absorbing members. An outlet conduit located downstream from the oil-absorbing members is connectable to a pump to cause the oil-free water to be pumped from the housing and diverted away from the trench.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: December 23, 2008
    Inventor: Rene James Landry, Sr.
  • Patent number: 7455769
    Abstract: A filter appliance including a dilution device, wherein the diluted portion remains largely constant when the entire volume flow is modified.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: November 25, 2008
    Assignee: Brita GmbH
    Inventor: Bernd Heitele
  • Patent number: 7442293
    Abstract: Oil adsorbent layers 4 and packed layers 5 are alternately laminated inside a treatment vessel 2, the oil adsorbent layers 4 comprise ten laminated flat sheets 4a composed of polypropylene, and gelled aluminum hydroxide 15 is evenly applied over the surface of each of these sheets 4a on the laminated side. These flat sheets 4a are lipophilic and hydrophobic.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 28, 2008
    Assignee: Jyonan Electric Industrial Corporation Limited
    Inventor: Kenichi Yokota
  • Patent number: 7410572
    Abstract: The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter and an acid-neutralizing filter. Preferably, the particulate filter and the acid-neutralizing filter are positioned within a housing. A conduit having a pressure reduction section is arranged to create a pressure differential across the acid-neutralizing filter such that a portion of the fluid to be filtered by the filter apparatus passes through the acid-neutralizing filter.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: August 12, 2008
    Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.
    Inventors: John H. Beard, Allan Roush
  • Patent number: 7396461
    Abstract: A filter cartridge for use in gravity-fed water treatment systems wherein filter elements include a dome-shaped hydrophilic porous particulate carbon powder block filter in a polymeric binder. The filter has a closed upper end and an open lower end with sidewalls extending there between, additional filter media and includes ion exchange resins and a fine mesh hydrophilic filter sheet to reduce contaminant content of water for drinking purposes.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: July 8, 2008
    Assignee: Filtrex Holdings PTE, Ltd.
    Inventors: Govind Bommi, Krishna Murthy Bommi
  • Patent number: 7351335
    Abstract: A filter module provided with a housing (3) having an inlet (6) for a liquid to be filtered and an outlet (10) for filtered liquid, with a first filter element (7-9, 12) accommodated in the housing (3), in the form of a porous mass provided with a central through-opening, to which the inlet (6) connects, and with a second filter element (1) accommodated in the housing (3) in the form of a number of lengths of tube-shaped filtering membrane (2), which together define a cylinder shape, which cylinder shape, at at least one extremity, between the open-ended filter membranes (2), is filled up with a sealing material, to which extremity the outlet (10) connects. The inlet (6) connects to the central through-opening of the first filter element (7-9, 12), which is surrounded by the second filter element (1), which has the form of a tubular casing obtained by winding from tube-shaped filtering membrane (2).
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: April 1, 2008
    Assignee: Norit Proces Technologie Holding B.V.
    Inventors: Lute Broens, Harry Futselaar, Ingo Blume, Annemieke Bernadette Edmond Mattheeuws, Michiel Jan Lensink, Lucas Johannes Cornelis Kouters, Marc Johannes Fleuren
  • Patent number: 7344579
    Abstract: A pipe trap comprising a body, a disc filter, a pipe and a plurality of mesh filter suitable for filtering gases is provided. The pipe trap body has a gas inlet and a gas outlet. The disc filter and the mesh filters are enclosed inside the pipe trap body. One end of the pipe connects with the disc filter and the other end of the pipe connects with the gas outlet. The mesh filters are enclosed inside the pipe. Using a multi-stage filtering method, liquid matter separates out first and then gaseous particles are filtered according to the particle size so that the pipe trap has a high filtering efficiency.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: March 18, 2008
    Assignee: Powerchip Semiconductor Corp.
    Inventors: Ping-Yang Chen, Chih-Peng Liao, Chin-Chi Chen, Shu-Ming Kuo, Yi-Chang Yang, Jui-Yuan Lin
  • Patent number: 7297267
    Abstract: An oil-sorbing filter element for removing oil from an aqueous flow such as the bilge water of a watercraft. The element includes a first stage which is formed of a consolidated permeable mass of a oleophilic polymeric material such as styrenic mid-block copolymer.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: November 20, 2007
    Assignee: Parker-Hannifin Corporation
    Inventors: Donald R Denton, Douglas E. Herrick, Geary Lane, Kirby S. Mohr
  • Patent number: 7132047
    Abstract: The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter and an acid-neutralizing filter. Preferably, the particulate filter and the acid-neutralizing filter are positioned within a housing. A conduit having a pressure reduction section is arranged to create a pressure differential across the acid-neutralizing filter such that a portion of the fluid to be filtered by the filter apparatus passes through the acid-neutralizing filter.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: November 7, 2006
    Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.
    Inventors: John H. Beard, Allan Roush
  • Patent number: 6998038
    Abstract: A system for removing material from a flowing liquid, where the system includes one or more cartridges, where each cartridge has an outer permeable wall and an inner permeable wall that form a media region between the walls, where a media is disposed within at least part of the media region to remove at least a portion of the material from the flowing liquid, the cartridge also having an inner cartridge lumen in communication with the inner permeable wall, and a cartridge outlet in communication with the inner cartridge lumen; a cartridge chamber having a treatment region that houses the one or more cartridges, where the cartridge chamber also includes a chamber inlet to accept the flowing liquid, and a chamber outlet to discharge treated liquid; and an actuatable valve positioned outside the one or more cartridges, where the valve controls a flow rate of the flowing liquid within the treatment region by actuating in response to a change in a level of the liquid in the treatment region.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: February 14, 2006
    Assignee: CDS Technologies, Inc.
    Inventor: Robert Howard
  • Patent number: 6969461
    Abstract: The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter and an acid-neutralizing filter. Preferably, the particulate filter and the acid-neutralizing filter are positioned within a housing. A conduit having a pressure reduction section is arranged to create a pressure differential across the acid-neutralizing filter such that a portion of the fluid to be filtered by the filter apparatus passes through the acid-neutralizing filter.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: November 29, 2005
    Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.
    Inventors: John H. Beard, Allan Roush
  • Patent number: 6955761
    Abstract: Filters, more particularly to multifunctional filters that are capable of removing as well as adding components to a filtered material are provided by the present invention. In addition to a multifunctional filter, the present invention relates to the use of such a multifunctional filter in an apparatus, to process a filtrate and to the filtrate produced by the process of the present invention.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: October 18, 2005
    Assignee: Procter & Gamble Company
    Inventors: Paul Amaat Raymond Gerald France, Arseni Valervich Radomyselski, Dewey Edward Burton
  • Patent number: 6939466
    Abstract: A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter medium layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter medium element and preventing collapsing of the medium into any separator conduit. At least one of the medium elements is formed from a material which swells in size due to fluid absorption with the various zones and the separator being operatively connected by a new and innovative edge seal.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: September 6, 2005
    Assignee: Cuno Incorporated
    Inventors: John L. Pulek, William A. Larsen, C. Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Patent number: 6911146
    Abstract: A filter (10) for use in a water heating vessel, such as an electric kettle, to filter sedimentary material in the water includes a scale collector (25), for example in the form of a compacted mesh block, carried on the filter. The block can be supported by a carrier member (27) permanently or detachably mounted on the filter frame, preferably towards an end of the filter closest to the bottom of the vessel.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: June 28, 2005
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Klaus Melgaard, Simon M. Whiteley
  • Patent number: 6893555
    Abstract: A dual flow filter unit for the filtration of a pressurized liquid such as oil, comprising a closed housing (10) having an inlet (31), and main and secondary outlets (32, 13) for that liquid. The unit further comprises a main filter element (21) arranged in the housing (10) and having an unfiltered fluid surface exposed to the majority of the liquid flow, the flow through the main filter (21) being directed to the main outlet (32) from the housing (10); and a secondary filter element (17) exposed to a portion of the liquid flow supplied to the housing inlet (31), any flow through the secondary filter being directed to the secondary outlet (13) from the housing. The main filter element (21) offers a low resistance to the flow of fluid therethrough relative to the secondary filter element (17) so that the majority of the flow through the inlet (31) is filtered by the main filter element (21) and the remainder by the secondary filter element (17).
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: May 17, 2005
    Inventors: Alan Philip Roper, Michael Charles Fallows
  • Publication number: 20040118766
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Application
    Filed: November 4, 2003
    Publication date: June 24, 2004
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Publication number: 20040118779
    Abstract: A unitary water filter assembly and method for removing all microbiological and multiple types of chemical contaminants from water used in an appliance for human consumption are provided. The filter assembly includes a first filter stage fluidly coupled to receive influent water for filtering chemical contaminants therein. A second filter stage is fluidly coupled to the first filter stage for filtering microbiological organisms therein. The filter assembly allows removal of all microorganisms such as cysts, bacteria, bacterial spores and viruses, from the drinking water. The filter assembly may also be configured to remove chemicals, such as chlorine, including associated taste and odor with such chemicals, particulates, and metal contaminants from drinking water. The filter assembly may be further configured to remove volatile organic compounds (VOCs), and other organic and inorganic contaminants from drinking water.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 24, 2004
    Inventors: James Rulon Young Rawson, Daniel Ryan Capelle
  • Publication number: 20040094461
    Abstract: A device and method for removing petroleum based contaminants from the runoff water that passes into a storm drain. The device is a filter apparatus that can be added to a storm drain. The filter apparatus consists of a filter cage that defines an open central conduit and a filter cartridge that wraps around the periphery of the filter cage. During normal rain conditions, water enters the sewer grate near the edges of the sewer grate. This water falls through the filter cartridge and is filtered. Solid debris that is mixed with the water is deflected through the central conduit and falls through the filter apparatus. During flood conditions, excess water is allowed to pass through the center conduit of the filter cage unfiltered in order to preserve the water flow capacity of the storm drain.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 20, 2004
    Inventor: S. Robert Sharpless
  • Patent number: 6726837
    Abstract: A casing having an inlet positioned below the bilge water discharge outlet of a boat or ship aligns a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse material restrictive to the flow of oil-based contaminants, and with the second open pipe end coupled to the casing outlet, such that with a plurality of filter pads floating atop the overlying layer adapted to absorb oil-based contaminants, a continuous absorption of the contaminants occur as the bilge water circulates through the casing and is allowed to dwell therein while the filter pads absorb the oil-based contaminants floating atop the inputted bilge water, along with one or more wheels extending downwardly from the casing and a handle extending rearwardly of it in allowing the casing to be moved about by a user.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: April 27, 2004
    Inventor: Rolf M. Papke
  • Patent number: 6712957
    Abstract: A casing having an inlet which receives oil-based contaminated bilge water is mounted on a boat or ship in aligning a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse material restrictive to the flow of oil-based contaminants, and with the second open pipe end coupled to the casing outlet, such that with a plurality of filter pads floating atop the overlying layer adapted to absorb oil-based contaminants, a continuous absorption of the contaminants occur as the bilge water circulates through the casing and is allowed to dwell therein while the filter pads absorb the oil-based contaminants floating atop the inputted bilge water.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: March 30, 2004
    Inventor: Rolf M. Papke
  • Patent number: 6712966
    Abstract: A cell-type filter unit having two or more filter media layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter media are preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter media layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter media element and preventing collapsing of the media into any separator conduit.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: March 30, 2004
    Assignee: Cuno Incorporated
    Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
  • Patent number: 6623631
    Abstract: There is disclosed a vacuum filtration device for aqueous media that includes a hydrophilic tubular filter element in a cylindrical housing and at least one hydrophobic gas-permeable membrane, coupled with a gas bleed-off valve to allow the escape of air entrained in the filtration medium.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: September 23, 2003
    Assignee: Sartorius AG
    Inventors: Andreas Graus, Christian Schäfer
  • Patent number: 6585892
    Abstract: A concentric arrangement of bag-type filter sleeves 11, 12 of a filter insert are removably supported within a concentric arrangement of screens 60, 61 of an annularly-shaped basket 10a. The screens respectively support the filter sleeves against radial flow during filtration. A filter cartridge 37 is carried interiorly of the innermost filter sleeve and is configured to filter the liquid that has first been filtered in the filter insert and before the liquid can exit the filter vessel 30.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: July 1, 2003
    Inventor: Moshe Gershenson