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| Number | Title | Issue Date |
| 8177975 | Apparatus for removing air and/or debris from a flow of liquid An apparatus removes air or debris from a flow of liquid. The apparatus includes a shell having an inlet, an outlet, and an elongate inner cavity in fluid communication with each of the inlet and the outlet. A plurality of elongate coalescing medium assemblies are d... | 05/15/2012 |
| 8177976 | Liquid filter assembly, components; and methods A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement... | 05/15/2012 |
| 8128823 | Treatment assemblies A fluid treatment assembly defines a treatment chamber and includes a treatment sub assembly positioned in an assembled condition in the treatment chamber. The treatment sub assembly includes a plurality of treatment members. The treatment assembly is arranged so th... | 03/06/2012 |
| 8119002 | Liquid filter assembly; and methods A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement... | 02/21/2012 |
| 7918996 | Stormwater filter bag The invention is a particle and sediment filter for stormwater. A long permeable filter bag is laid out horizontally within an enclosure. The bag is formed of at least two layers of parallel tubes that give each layer the pleated look of a typical air mattress. Stor... | 04/05/2011 |
| 7811454 | Displacement filter apparatus A method and apparatus for filtering a slurry utilizing a displacement filtering principle. The filter apparatus desirably includes an inner filter and an outer filter. Both the inner and outer filters are preferably substantially annular in shape and positioned con... | 10/12/2010 |
| 7438811 | Water purification apparatus A water purification apparatus includes a main body having an accommodation chamber inside and a plate on a top side thereof, a lid pivotally mounted on the main body and closable on the main body, a holder mounted with the plate of main body and defining with the p... | 10/21/2008 |
| 7435344 | Device for separating impurities from liquids A device for separating impurities from liquids has at least one separating container for separating impurities from a liquid/impurities mixture flowing in a flow direction through the at least one separating container. A partition divides the interior of the at lea... | 10/14/2008 |
| 7387731 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 06/17/2008 |
| 7374364 | Trench drain filter assembly An improved trench drain filter and modular system therefor for intercepting and treating run off water in a trench drain before discharge into a drainage system. The filter elements include a perforated pipe covered with one or more layers of geotextile material, w... | 05/20/2008 |
| 7371267 | Wire filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 05/13/2008 |
| 7364662 | Scraper adjustment mechanism and method A scraper adjustment mechanism and method for a filter that permits an operator to adjust the distance between the scraper and a filter surface without the need to have access to the filter/scraper interface, or fasteners within the filter. ... | 04/29/2008 |
| 7361271 | Environmentally friendly dual lube venturi filter cartridge An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surr... | 04/22/2008 |
| 7347937 | Perfluorinated thermoplastic filter cartridge A filtration cartridge having a housing with an inlet and an outlet and a filtration membrane contained within the housing and located between the inlet and the outlet is described. The membrane is sealed in such a manner that all fluid must flow through the membran... | 03/25/2008 |
| 7335721 | Polytetrafluoroethylene treatment One or more PTFE films are heated to greater than 150 degrees centigrade (C) and for a time greater than 20 hours, then the PTFE films are cooled. The PTFE films may be heated to temperatures greater than 200° C. and less than 250° C. and most preferably heated to... | 02/26/2008 |
| 7329310 | Filter module The invention relates to a filter module having a module housing and at least one filter element. The filter module has at least one inlet opening, at least one filtrate outlet and a module housing having at least one joint line. ... | 02/12/2008 |
| 7329313 | Air cleaner An air cleaner includes a housing, a filter, a photocatalyst reaction unit which can form spiral a air flow, a forced convection device, and an electrocircuit controller. The forced convection device is located between the filter and the photocatalyst reaction unit.... | 02/12/2008 |
| 7314553 | Pool filter cleaning device A pool filter cleaning device comprising a containment chamber having a upper end, a lower end, and a circumferential sidewall. The sidewall has a water deflecting portion adjacent the upper end and the containment chamber is adapted to receive a dirty pool filter. ... | 01/01/2008 |
| 7310970 | Refrigerant/oil separator An apparatus for separating an oil from a refrigerant has a housing, an inlet conduit for receiving a refrigerant/oil mixture, a separator medium, a refrigerant outlet conduit, and an oil outlet conduit. The inlet conduit has an inlet external to the housing and an ... | 12/25/2007 |
| 7311830 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 12/25/2007 |
| 7294262 | Modular fluid treatment apparatus Some embodiments of the present invention provide a modular fluid treatment assembly and method in which modules of the system each have a head that can be connected to one or more heads (of one or more other modules) in different configurations. In some embodiments... | 11/13/2007 |
| 7294263 | Dual transmission filter design A method and apparatus for a compact dual transmission filter design is provided. More precisely, a single filter housing is adapted to accommodate a primary filter and an auxiliary filter in fluid communication with a primary pump and auxiliary pump, respectively. ... | 11/13/2007 |
| 7287575 | Component for supporting a filter member, a device including a tubular filter member and said component, a plate heat exchanger including a tubular filter member and said component The invention relates to a component (20) for supporting a tubular filter member (15) in a portable channel (2) in a plate heat exchanger (1). The invention also relates to a device including the component (20) and the filter membe... | 10/30/2007 |
| 7285209 | Method and apparatus for separating emulsified water from hydrocarbons The invention discloses an apparatus for filtration of water from hydrocarbons comprised of a fresh-feed inlet, a first dead end filter, that is hydrophobic, a second sweeping-flow filter, that is hydrophobic, a common housing containing both the first and second fi... | 10/23/2007 |
| 7282145 | Oil filter for construction machine The prevent invention provides an oil filter comprising a filter element housed in a casing, the filter element being formed of two or more cylindrical element pieces piled on top of another in the height direction and attachably and detachably connected through con... | 10/16/2007 |
| 7264722 | Filtration system A method and apparatus for removing organic contaminants from an aqueous phase in which the contaminant is solubilized. In the method the aqueous phase is passed through a fluid-pervious filtration media which has been infused with an absorbtion composition comprisi... | 09/04/2007 |
| 7264721 | Filtration system A method and apparatus for removing organic contaminants from an aqueous phase in which the contaminant is solubilized. In the method the aqueous phase is passed through a fluid-pervious filtration media which has been infused with an absorbtion composition comprisi... | 09/04/2007 |
| 7258238 | Debris filter with a rotating debris extractor A filter for filtering solid particles from liquids, especially for use in steam condensers and heat exchanger in thermal and nuclear power plants, said filter comprising a housing (4), a screen basket (2) located within said housing (4), a debr... | 08/21/2007 |
| 7255788 | Catchment header and membrane module unit A catchment header allowing a plurality of membrane modules to be connected thereto, having a tubular catchment part with a Young's modulus of 4.0 GPa or less for collecting and taking out filtrated liquid from the membrane modules, wherein at least a part of the tu... | 08/14/2007 |
| 7237681 | Ring filter element for a liquid filter A ring filter element is provided for a liquid filter, especially for an oil filter for purifying lubricating oil, especially for an internal combustion engine of a motor vehicle. The ring filter element comprises a filter material which is arranged in an annular ma... | 07/03/2007 |
| 7232035 | Liquid filter with directional fluid insert A filter assembly for removing particulate contaminants from a fluid, comprises a annular filter element having first and second ends, a filter housing containing the filter element and having first and second ends and a substantially cylindrical side wall defining ... | 06/19/2007 |
| 7208025 | Method and apparatus for filtering air passages in an alternator A filter to clean the air entering an alternator in a vehicle used in a dirty environment such as a crop harvesting machine includes a mesh filter which is coupled to an air intake of the alternator. The filter is constructed of a mesh material which is flexible and... | 04/24/2007 |
| 7192522 | Filtering device incorporating a circulation loop The invention concerns a device for tangential filtering of a fluid to be treated, comprising in a housing (2): a separating part (15) mounted in the first communicating chamber (11), in sealed contact with the... | 03/20/2007 |
| 7191903 | Filter insert with variable length center tube A filter insert (1) having an annular filter element (2) which is connected in a fluid-tight manner to a cover (5) on one axial end face (3) and to a base (6) on an opposite axial end face (4). The filter element (2) ... | 03/20/2007 |
| 7182599 | Method and apparatus for removing particulate metals from dental waste water An inline filter assembly to be used in conjunction with surgical or other procedures, near the patient or chairside in dental operations, that is capable of removing, by filtration, particulate matter from waste-water. The filter assembly is configured to permit ea... | 02/27/2007 |
| 7182864 | Housing for environmentally friendly filter cartridge A filter system in which a housing and an environmentally friendly filter cartridge are coordinated to provide ease of change of the filter cartridge and reliable operation. The cartridge contains no metal parts and is readily incinerateable. The housing is provided... | 02/27/2007 |
| 7179380 | Environmentally friendly dual lube venturi filter cartridge An environmentally friendly dual lube venturi filter cartridge which has no metallic components. A plastic centertube having a venturi section supports a bypass filter element on standoffs molded into the centertube. An outer concentric full flow filter element surr... | 02/20/2007 |
| 7179636 | Preparing a sample to be analyzed from a sample with very large volume The invention concerns the use of filtering means comprising a housing (2) wherein are arranged parallel to one another a plurality of hollow fibers (3), whereof the porous wall (3a) of each defines an aperture (4), so that said me... | 02/20/2007 |
| 7166215 | Pressure vessel and recyclable filter cartridge A filter assembly is described that includes a substantially recyclable filter cartridge inside a pressure vessel. The invented filter cartridge comprises substantially non-pressure bearing walls, except for a pressure-bearing neck or cap with neck that is adapted t... | 01/23/2007 |
| 7166210 | Oil filter cartridge The present invention relates to small vehicles such as lawn and garden tractors and more specifically to an oil filter cartridge or assembly usable with the transmissions of such vehicles. The cartridge is comprised of a filtering element, a strainer element and a ... | 01/23/2007 |
