Including Non-self-supporting Medium Patents (Class 210/317)
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Patent number: 11890586Abstract: A device produces fine bubbles that has a simple configuration and that is capable of generating fine bubbles. This fine bubble generation device includes: a porous body having continuous pores; a liquid supply section that supplies a liquid to the porous body and causes the liquid to circulate through the continuous pores; and a liquid discharge section for discharging liquid that has circulated through the continuous pores.Type: GrantFiled: September 9, 2019Date of Patent: February 6, 2024Assignees: CATALER CORPORATION, NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITYInventors: Tomohito Mizukami, Yusuke Saito, Nobuyuki Mase
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Patent number: 11795067Abstract: A water intake and pretreatment system (10) comprising an inlet for delivering water from a natural source to a reservoir (12); said inlet to reservoir having a net screen (16) to prevent entry of organisms above a predetermined size and including a one-way gate (30) to allow organisms to exit the reservoir; said reservoir further comprising a granular filter media for water and algae filtration; and a drainage layer for removal of filtered water from the granular filter media to a drainage outlet. A local backwashing apparatus (40) is included for localized backwashing of the granular filter media.Type: GrantFiled: September 5, 2022Date of Patent: October 24, 2023Assignee: IDE WATER TECHNOLOGIES LTD.Inventors: Boris Liberman, Miriam Faigon, Vitaly Levitin, Gal Greenberg
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Patent number: 11583796Abstract: A filter element is provided. The filter element includes a filter media pack including an outer surface. The outer surface extending between a first flow face and a second flow face. The filter element also includes a polymeric coating applied to the outer surface of the filter media pack, wherein the polymeric coating is not a molded structure. In embodiments, the polymeric coating covers at least 25% of a span between the first flow face and the second flow face and has an average thickness of between 0.005 and 0.100 in. In other embodiments, the polymeric coating has a surface roughness of at least 50 ?in to provide an outer gripping surface. A method and system for applying the polymeric coating to the filter element are also provided.Type: GrantFiled: February 9, 2017Date of Patent: February 21, 2023Assignee: Baldwin Filters, Inc.Inventors: Timothy L. Krull, Matthew K. Epperson, Daniel P. Pokorney, Michael J. Von Seggern
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Patent number: 11254085Abstract: Absorbent microstructure panels are described herein. An example filter device includes a plurality of microstructure panels each having a front surface and a back surface, and a plurality of capillary ridges protruding from the front surface. The plurality of capillary ridges are each spaced apart from one another. The plurality of microstructure panels form an absorbent microstructure array by layering the plurality of microstructure panels together such that the plurality of capillary ridges of one microstructure panel contacts the back surface of an adjacent microstructure panel to create capillary tubes that draw fluid into the absorbent microstructure array.Type: GrantFiled: October 13, 2019Date of Patent: February 22, 2022Assignee: Imagine TF, LLCInventor: Brian Edward Richardson
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Patent number: 11027997Abstract: The present invention solves the problem of environmental pollution created by animal waste and converting animal waste to reusable water in the earth. The invention does this by a device that is capable of receiving animal waste and breaking down the waste into different components by the help of a decomposing catalyst such as a septic pack, filtering the resulting solution and finally producing a filtered liquid that enters the earth being cleansed by the process. The present invention comprises a filter device, a tank unit, a filter unit, a first opening positioned on a top surface of the tank unit; a second opening positioned on a bottom surface of the tank unit; wherein the tank unit is capable of receiving animal waste through the first opening; at least one hole at a bottom surface of the filter unit; wherein the tank unit is placed over the filter unit.Type: GrantFiled: May 29, 2018Date of Patent: June 8, 2021Inventor: Brian Moore
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Patent number: 10647599Abstract: An apparatus comprising copper and zinc adhered to reticulated foam is useful for repelling or preventing mollusk infestation.Type: GrantFiled: December 26, 2016Date of Patent: May 12, 2020Assignee: 060Bio, LLCInventors: John Sawyer, Paul Gregory Coxe
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Patent number: 10267277Abstract: 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: GrantFiled: October 21, 2016Date of Patent: April 23, 2019Assignee: Delstar Technologies, Inc.Inventors: Dale Ray Estepp, Andrew Gordon Platt
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Patent number: 10196281Abstract: 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: GrantFiled: September 6, 2016Date of Patent: February 5, 2019Assignee: DONGGUAN DIERCON TECHNOLOGY CO., LTD.Inventor: Yinhuan Sun
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Patent number: 9670076Abstract: 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: GrantFiled: January 12, 2015Date of Patent: June 6, 2017Inventors: Pasupathicoil Ramaswamy Soundar Rajan, Sowmya Soundar Rajan
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Patent number: 8758607Abstract: 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: GrantFiled: February 2, 2010Date of Patent: June 24, 2014Assignee: GHD Pty Ltd.Inventor: Konstantinos Athanasiadis
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Patent number: 8658036Abstract: 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: GrantFiled: July 28, 2009Date of Patent: February 25, 2014Assignee: Organo CorporationInventors: Mitsuru Yoden, Satoshi Kasahara, Mikio Sugano
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Patent number: 8354021Abstract: 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: GrantFiled: March 7, 2008Date of Patent: January 15, 2013Assignee: Beijing Rechsand Science & Technology Group Co., LtdInventor: Qin Shengyi
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Patent number: 8349181Abstract: 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: GrantFiled: April 23, 2010Date of Patent: January 8, 2013Assignee: Duerr Dental AGInventor: Eberhardt Nonnenmacher
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Patent number: 8323493Abstract: 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: GrantFiled: April 14, 2011Date of Patent: December 4, 2012Assignee: Eaton CorporationInventors: Mark Anthony Quintel, Derek Ronald Thelen, Christopher Scott Rau, Richard Bradley Jacobs
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Patent number: 8142654Abstract: 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: GrantFiled: September 24, 2009Date of Patent: March 27, 2012Inventor: Abraham K. Kohl
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Patent number: 8114287Abstract: 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: GrantFiled: May 5, 2008Date of Patent: February 14, 2012Assignee: Layne Christensen CompanyInventor: James Jeffrey Harris
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Patent number: 8097155Abstract: 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: GrantFiled: September 3, 2009Date of Patent: January 17, 2012Inventor: G. Thomas Ennis
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Patent number: 7998347Abstract: 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: GrantFiled: May 29, 2008Date of Patent: August 16, 2011Assignee: Ford Global Technologies, LLCInventors: Lev Pekarsky, Robb D. Pratt
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Patent number: 7875178Abstract: 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: GrantFiled: February 6, 2006Date of Patent: January 25, 2011Assignee: ADS Structures, Inc.Inventor: Courtney Ashliman
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Patent number: 7862714Abstract: 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: GrantFiled: September 24, 2004Date of Patent: January 4, 2011Assignee: Greenoil Standard APSInventors: Lars Brejnbjerg, Bjarne Egelind
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Patent number: 7837870Abstract: 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: GrantFiled: June 15, 2006Date of Patent: November 23, 2010Assignees: Toyota Boshoku Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki, Hiroyuki Sekine
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Publication number: 20100264077Abstract: 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: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
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Publication number: 20100224545Abstract: 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: ApplicationFiled: January 6, 2010Publication date: September 9, 2010Inventors: Philip M. Rolchigo, John H. Burban, John Shanahan, Robert O. Crowder
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Patent number: 7789926Abstract: 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: GrantFiled: May 29, 2007Date of Patent: September 7, 2010Assignee: Mann + Hummel GmbHInventors: Mario Rieger, Werner Blossey, Lorenz Eilert
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Publication number: 20100147760Abstract: 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: ApplicationFiled: October 16, 2009Publication date: June 17, 2010Inventors: David Leavitt, John Famula, Christer Broman, Jeremy Hess, Elmo Walter Geppelt
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Patent number: 7708883Abstract: 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: GrantFiled: October 20, 2006Date of Patent: May 4, 2010Inventor: Tommy Chi-Kin Wong
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Patent number: 7658841Abstract: 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: GrantFiled: May 19, 2008Date of Patent: February 9, 2010Inventor: Rene James Landry, Sr.
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Patent number: 7527739Abstract: 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: GrantFiled: August 15, 2005Date of Patent: May 5, 2009Assignee: Fleetguard IncInventors: Zemin Jiang, Ted S. Loftis, Mark J. Johnson, Barry M. Verdegan
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Patent number: 7527727Abstract: 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: GrantFiled: February 8, 2008Date of Patent: May 5, 2009Assignee: Plymouth Technology, Inc.Inventor: Geary G. Parke
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Patent number: 7520392Abstract: 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: GrantFiled: April 29, 2002Date of Patent: April 21, 2009Assignee: Jonathan Schewitz TrustInventor: Jonathan Schewitz
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Patent number: 7510088Abstract: 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: GrantFiled: July 13, 2006Date of Patent: March 31, 2009Assignee: Conair CorporationInventors: James Michael Smith, Theodore B. Mulle
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Patent number: 7478729Abstract: 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: GrantFiled: February 15, 2005Date of Patent: January 20, 2009Assignee: Nifco Inc.Inventors: Hiroji Sato, Kazumasa Kurihara, Yasutomo Kobayashi, Toshihide Kimisawa, Takeshi Kojima
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Patent number: 7479225Abstract: 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: GrantFiled: August 15, 2005Date of Patent: January 20, 2009Inventor: Timothy Venable
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Patent number: 7468129Abstract: 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: GrantFiled: November 7, 2006Date of Patent: December 23, 2008Inventor: Rene James Landry, Sr.
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Patent number: 7455769Abstract: A filter appliance including a dilution device, wherein the diluted portion remains largely constant when the entire volume flow is modified.Type: GrantFiled: July 9, 2003Date of Patent: November 25, 2008Assignee: Brita GmbHInventor: Bernd Heitele
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Patent number: 7442293Abstract: 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: GrantFiled: January 14, 2005Date of Patent: October 28, 2008Assignee: Jyonan Electric Industrial Corporation LimitedInventor: Kenichi Yokota
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Patent number: 7410572Abstract: 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: GrantFiled: October 23, 2006Date of Patent: August 12, 2008Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.Inventors: John H. Beard, Allan Roush
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Patent number: 7396461Abstract: 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: GrantFiled: March 20, 2006Date of Patent: July 8, 2008Assignee: Filtrex Holdings PTE, Ltd.Inventors: Govind Bommi, Krishna Murthy Bommi
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Patent number: 7351335Abstract: 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: GrantFiled: November 15, 2002Date of Patent: April 1, 2008Assignee: 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
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Patent number: 7344579Abstract: 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: GrantFiled: May 18, 2004Date of Patent: March 18, 2008Assignee: Powerchip Semiconductor Corp.Inventors: Ping-Yang Chen, Chih-Peng Liao, Chin-Chi Chen, Shu-Ming Kuo, Yi-Chang Yang, Jui-Yuan Lin
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Patent number: 7297267Abstract: 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: GrantFiled: February 10, 2004Date of Patent: November 20, 2007Assignee: Parker-Hannifin CorporationInventors: Donald R Denton, Douglas E. Herrick, Geary Lane, Kirby S. Mohr
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Patent number: 7132047Abstract: 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: GrantFiled: August 31, 2005Date of Patent: November 7, 2006Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.Inventors: John H. Beard, Allan Roush
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Patent number: 6998038Abstract: 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: GrantFiled: July 28, 2004Date of Patent: February 14, 2006Assignee: CDS Technologies, Inc.Inventor: Robert Howard
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Patent number: 6969461Abstract: 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: GrantFiled: May 17, 2001Date of Patent: November 29, 2005Assignees: Baldwin Filters, Inc., D-A Lubricant Company, Inc.Inventors: John H. Beard, Allan Roush
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Patent number: 6955761Abstract: 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: GrantFiled: September 10, 2002Date of Patent: October 18, 2005Assignee: Procter & Gamble CompanyInventors: Paul Amaat Raymond Gerald France, Arseni Valervich Radomyselski, Dewey Edward Burton
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Patent number: 6939466Abstract: 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: GrantFiled: October 11, 2002Date of Patent: September 6, 2005Assignee: Cuno IncorporatedInventors: John L. Pulek, William A. Larsen, C. Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan
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Patent number: 6911146Abstract: 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: GrantFiled: December 7, 1999Date of Patent: June 28, 2005Assignee: Koninklijke Philips Electronics, N.V.Inventors: Klaus Melgaard, Simon M. Whiteley
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Patent number: 6893555Abstract: 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: GrantFiled: February 15, 2001Date of Patent: May 17, 2005Inventors: Alan Philip Roper, Michael Charles Fallows
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Publication number: 20040118779Abstract: 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: ApplicationFiled: December 23, 2002Publication date: June 24, 2004Inventors: James Rulon Young Rawson, Daniel Ryan Capelle
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Publication number: 20040118766Abstract: 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: ApplicationFiled: November 4, 2003Publication date: June 24, 2004Inventors: John L. Pulek, William A. Larsen, Charles Thomas Paul, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan