Patents by Inventor David John Cox
David John Cox has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160322649Abstract: There is disclosed a spiral-wound electrochemical cell and components thereof, and aspiral-wound electrochemical cell for forming a chemical reaction product, comprising at least one electrode pair wound about a central axis. The present invention generally relates to configurations, arrangements or designs for gas, liquid and/or electrical conduits, pathways, connections, channels, arrangements or the like, in electro-chemical cells that are spiral-wound or have a spiral configuration, arrangement or design, and methods for their fabrication. More specifically, in various forms, the present invention relates to a core element, end cap(s), an external element containing or providing gas/liquid plumbing and/or electrical connections that provide improved functionality and reduced cost electro-chemical cells.Type: ApplicationFiled: December 10, 2014Publication date: November 3, 2016Inventors: Gerhard Frederick SWIEGERS, David John COX, Deborah DE LA CRUZ, Samuel DE LA CRUZ, Steven Duwayne KLOOS, Paul Soo-Hock KHOO, Fletcher William THOMPSON, Andrew NATTESTAD, Dennis ANTIOHOS, Stephen Thomas BEIRNE
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Patent number: 8894858Abstract: A method of filtering a feed liquid in a membrane filtration assembly is provided comprising introducing feed liquid to be treated into a filtration chamber of a membrane filtration system including a membrane module having one or more permeable hollow membranes, the module being located in the filtration chamber, and the filtration chamber having an open upper end located above an upper header of the membrane module and a closed lower end, and feed tank surrounding the filtration chamber. The feed tank may be configured to provide the feed liquid through the open upper end of the filtration chamber, and the feed liquid may be applied to the surface of the membranes within the membrane module and withdrawn from the lumens of the membranes as filtrate.Type: GrantFiled: July 15, 2014Date of Patent: November 25, 2014Assignee: Evoqua Water Technologies LLCInventors: David John Cox, Warren Thomas Johnson
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Publication number: 20140326682Abstract: A method of filtering a feed liquid in a membrane filtration assembly is provided comprising introducing feed liquid to be treated into a filtration chamber of a membrane filtration system including a membrane module having one or more permeable hollow membranes, the module being located in the filtration chamber, and the filtration chamber having an open upper end located above an upper header of the membrane module and a closed lower end, and feed tank surrounding the filtration chamber. The feed tank may be configured to provide the feed liquid through the open upper end of the filtration chamber, and the feed liquid may be applied to the surface of the membranes within the membrane module and withdrawn from the lumens of the membranes as filtrate.Type: ApplicationFiled: July 15, 2014Publication date: November 6, 2014Inventors: David John Cox, Warren Thomas Johnson
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Patent number: 8858796Abstract: A membrane filtration assembly (10) including having a filtrate carrier (9) for minimizing backwash. The membrane filtration assembly includes a membrane module (5) having one or more permeable hollow membranes (6) supported therein by an upper header (7) and a lower header (8). The filtrate carrier (9) extends between the upper (7) and lower (8) headers to allow filtrate to be collected from either or both ends of membranes (6). A filtrate collection chamber (18) is associated with the upper (7) and lower headers (9) and in fluid communication with lumens of the membranes (6) for collecting filtrate withdrawn through said membrane lumens. A filtration chamber (11) is provided for receiving feed liquid to be applied to the surface of membranes (6) within the module (5). The filtration chamber (11) includes an open end for receiving the feed liquid. The open end is located beyond the height of the module (5) to enable gravity feed.Type: GrantFiled: August 22, 2006Date of Patent: October 14, 2014Assignee: Evoqua Water Technologies LLCInventors: David John Cox, Warren Thomas Johnson
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Patent number: 8518256Abstract: A membrane module includes at least one hollow fiber membrane; a first resin layer formed around an end of the at least one hollow fiber membrane; and a second resin layer chemically bound to the first resin layer, wherein the second resin layer is of greater flexibility than the first resin layer.Type: GrantFiled: April 15, 2011Date of Patent: August 27, 2013Assignee: Siemens Industry, Inc.Inventors: David John Cox, Fufang Zha, Joachim Muller, Cinzia Lea, George Schneider
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Publication number: 20110192783Abstract: A membrane module includes at least one hollow fibre membrane; a first resin layer formed around an end of the at least one hollow fibre membrane; and a second resin layer chemically bound to the first resin layer, wherein the second resin layer is of greater flexibility than the first resin layer.Type: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Applicant: Siemens Industry, Inc.Inventors: David John Cox, Georg Schnieder, Fufang Zha, Joachim Muller, Cinzia Lea
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Patent number: 7931463Abstract: An apparatus for potting membranes. The apparatus may include a mould for receiving ends of the membranes, means for forming a first layer of a curable resin material around the ends in the mould, and means for applying a second layer of a flexible resin material to the first layer prior to full curing of the first layer. The flexible resin material may be chemically reactive with the curable resin material to form an adhesive bond therebetween. A potting sleeve may be positioned within the mould. A centrifuge may receive the curable resin and/or the flexible resin material upstream of the mould.Type: GrantFiled: August 5, 2005Date of Patent: April 26, 2011Assignee: Siemens Water Technologies Corp.Inventors: David John Cox, Georg Schnieder, Fufang Zha, Joachim Muller, Cinzia Lea
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Patent number: 7862719Abstract: A membrane module (3) comprising a plurality of porous hollow membranes (8). The membranes (8) extend between and are fixed at each end in a header (5, 6). One header (6) has one or more of openings (12) formed therein. The openings (12) are in fluid communication with a source of gas and/or liquid (13, 14, 15). The other of the headers (5) is sealingly connected to and in fluid communication with a head-piece (9). The head-piece (9) is adapted to couple to an associated head-piece of a further module to form a rack of modules (17). A potting head (6) for use in mounting porous hollow membranes (8) is also disclosed comprising a preformed potting element (29). The potting element (29) includes one or more cavities (30) for receiving curate potting material which, in use, supports said membranes (8).Type: GrantFiled: August 19, 2005Date of Patent: January 4, 2011Assignee: Siemens Water Technologies Corp.Inventors: Robert James McMahon, David John Cox, Fufang Zha, Roger William Phelps, Warren Thomas Johnson, Sargon Barkho
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Publication number: 20080210623Abstract: A membrane module (3) comprising a plurality of porous hollow membranes (8). The membranes (8) extend between and are fixed at each end in a header (5, 6). One header (6) has one or more of openings (12) formed therein. The openings (12) are in fluid communication with a source of gas and/or liquid (13, 14, 15). The other of the headers (5) is sealingly connected to and in fluid communication with a head-piece (9). The head-piece (9) is adapted to couple to an associated head-piece of a further module to form a rack of modules (17). A potting head (6) for use in mounting porous hollow membranes (8) is also disclosed comprising a preformed potting element (29). The potting element (29) includes one or more cavities (30) for receiving curate potting material which, in use, supports said membranes (8).Type: ApplicationFiled: August 19, 2005Publication date: September 4, 2008Inventors: Robert James McMahon, David John Cox, Fufang Zha, Roger William Phelps, Warren Thomas Johnson, Sargon Barkho
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Publication number: 20080190846Abstract: A membrane filtration assembly (10) including a membrane module (5) having one or more permeable hollow membranes (6) supported therein by at least one header (7). A filtrate collection chamber (18) is associated with the header (7) and in fluid communication with lumens of the membranes (6) for collecting filtrate withdrawn through said membrane lumens. A filtration chamber (11) is provided for receiving feed liquid to be applied to the surface of membranes (6) within the module (5). The filtration chamber (11) encloses module (5) and extends beyond the height of the module (5).Type: ApplicationFiled: August 22, 2006Publication date: August 14, 2008Inventors: David John Cox, Warren Thomas Johnson
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Publication number: 20080110504Abstract: A modular membrane filtration system (5) includes a number of banks (6) of membrane modules (7). Each module (7) includes upper and lower modular manifolds (8) and (9), respectively which are connected to one another to form upper and lower common manifolds (10) and (11) for each bank (6). The upper and lower manifolds (8) and (9) are used for delivery of feed and removal of filtrate and waste liquid from the modules (7). A gas feed manifold (12) runs along the top of the module banks (6) and feeds gas to lower gas manifold (13) through drop lines (14). A further manifold (15) runs in parallel with the common upper and lower manifolds (10) and (11) and is connected thereto at connections points (16) between the manifold banks (6).Type: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Inventors: Warren Johnson, Sargon Barkho, Max Johnson, Peter Clark Stuart, Craig Chamulko, David John Cox, Peter Rogers
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Patent number: 7264716Abstract: A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting collar connected with said housing. The collar is adapted to receive and locate the submodule, where the submodule has a connecting sleeve with a locking formation. The submodule can be secured at one end to the collar by a clip adapted to engage both the collar and the locking formation to prevent axial withdrawal of the submodule from the collar. Also disclosed is a membrane filtration apparatus including a filter submodule including one or more elongate bundles of semipermeable polymeric fibers. The apparatus further includes a membrane filtration manifold removably connected at one end of said filter submodule and a basepiece removably connected to the other end of said filter submodule.Type: GrantFiled: November 20, 2003Date of Patent: September 4, 2007Assignee: Siemens Water Technologies Corp.Inventors: Warren Thomas Johnson, Gary William Stollery, Bruce Gregory Biltoft, David John Cox, Robert James McMahon, David Wood, Leon Keith Ernst
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Patent number: 7223340Abstract: A restraining system for hollow fibers is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.Type: GrantFiled: February 11, 2005Date of Patent: May 29, 2007Assignee: U.S. Filter Wastewater Group, Inc.Inventors: Fufang Zha, David John Cox
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Patent number: 6974554Abstract: A method of forming a pot for an array of hollow fiber membranes (7) is provided, including the steps of placing the ends (6) of the fiber membranes (7) in a mould (5); forming a first layer (20) of curable resin material in a non-cured state around the fiber membrane ends (6), applying a second layer (21) of a polyurethane resin material to the first layer (20) prior to full curing of the first layer, the polyurethane resin material layer being chemically reactive with the first layer material to form an adhesive bond therebetween; at least partially curing both layers and removing the pot formed from the mould (5), wherein the second layer material is of higher flexibility than the first layer material when each layer is fully cured. Apparatus for performing the method is also disclosed.Type: GrantFiled: September 30, 2003Date of Patent: December 13, 2005Assignees: U.S. Filter Wastewater Group, Inc., Pall Seitzschenk Filtersystems GmbHInventors: David John Cox, Georg Schnieder, Fufang Zha, Joachim Muller, Cinzia Lea
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Patent number: 6962258Abstract: A restraining system for hollow fibers is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.Type: GrantFiled: July 19, 2004Date of Patent: November 8, 2005Assignee: U.S. Filter Wastewater Group, Inc.Inventors: Fufang Zha, David John Cox
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Publication number: 20040262215Abstract: A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.Type: ApplicationFiled: July 19, 2004Publication date: December 30, 2004Inventors: Fufang Zha, David John Cox
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Publication number: 20040238431Abstract: A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting collar connected with said housing. The collar is adapted to receive and locate the submodule, where the submodule has a connecting sleeve with a locking formation. The submodule can be secured at one end to the collar by a clip adapted to engage both the collar and the locking formation to prevent axial withdrawal of the submodule from the collar. Also disclosed is a membrane filtration apparatus including a filter submodule including one or more elongate bundles of semipermeable polymeric fibers. The apparatus further includes a membrane filtration manifold removably connected at one end of said filter submodule and a basepiece removably connected to the other end of said filter submodule.Type: ApplicationFiled: November 20, 2003Publication date: December 2, 2004Inventors: Warren Thomas Johnson, Gary William Stollery, Bruce Gregory Biltoft, David John Cox, Robert James McMahon, David Wood, Leon Keith Ernst
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Patent number: 6783008Abstract: A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.Type: GrantFiled: October 9, 2002Date of Patent: August 31, 2004Assignee: U.S. Filter Wastewater Group, Inc.Inventors: Fufang Zha, David John Cox
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Publication number: 20030089659Abstract: A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.Type: ApplicationFiled: October 9, 2002Publication date: May 15, 2003Inventors: Fufang Zha, David John Cox
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Publication number: 20020148767Abstract: A membrane filtration manifold (1) for connecting a filter submodule (2) including one or more elongate bundles of semipermeable polymeric fibers. The manifold (1) includes a housing (3) and connecting collar (4) connected with said housing (3). The collar (4) is adapted to receive and locate the submodule (2), where the submodule has a connecting sleeve (5) with a locking formation (6). The submodule (2) can be secured at one end to the collar (4) by a clip (7) adapted to engage both the collar and the locking formation to prevent axial withdrawal of the submodule from the collar. Also disclosed is a membrane filtration apparatus (25) including a filter submodule (2) including one or more elongate bundles of semipermeable polymeric fibers. The apparatus further includes a membrane filtration manifold removably connected at one end of said filter submodule (2) and a basepiece (27) removably connected to the other end of said filter submodule.Type: ApplicationFiled: October 18, 2001Publication date: October 17, 2002Inventors: Warren Thomas Johnson, Gary William Stollery, Bruce Gregory Biltoft, David John Cox, Robert James McMahon, David Wood, Leon Keith Ernst