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| Number | Title | Issue Date |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 7288189 | Multi-faceted intake filter for an aquarium A multi-faceted intake filter for an aquarium includes a top surface portion, a bottom surface portion and a plurality of side surface portions that collectively define a filter body is formed from a compressible foam. The intake filter also includes a bore that ext... | 10/30/2007 |
| 7282147 | Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem... | 10/16/2007 |
| 7241383 | Fluid treating method and apparatus A fluid treatment method includes the steps of forming a ring lamination by laminating a plurality of filtering rings with contact surfaces facing each other in a laminating direction; providing at least portions of the filtering rings with a contact surface roughne... | 07/10/2007 |
| 7182869 | Fuel filter arrangement A fuel filter and vapor separator arrangement having at least one layer of liquid fuel permeable material defining at least one substantially enclosed cavity. The permeable material has at least one opening to provide fluid communication of liquid fuel within the ca... | 02/27/2007 |
| RE39294 | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate A vertical skein of “fibers”, opposed terminal portions of which are held in headers unconfined in a modular shell, is aerated with a gas-distribution means which produces a mass of bubbles serving the function of a scrub-brash for the outer surfaces of the fibe... | 09/19/2006 |
| 7083735 | High debris content strainer A high debris content strainer that utilizes a cylindrically-shaped screen having four removal assemblies positioned evenly around the screen periphery. Each removal assembly includes a backwash spray bar on the downstream side of the screen and a scraper/brush and ... | 08/01/2006 |
| 7040490 | Filter A filter having filter openings, which openings vary in cross-section automatically in accordance with an inherent variable of the medium passing there through. The openings can vary in response to the heat of the medium passing through the openings. The openings ca... | 05/09/2006 |
| 7025811 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device comprises a source of high pressure fluid and means to transport the fluid to a nozzle or nozzles; an actuator for moving the nozz... | 04/11/2006 |
| 7000781 | Filtering device The invention relates to a filtering device for taking a filtrate sample from liquid matter containing solid particles. The filtering device comprises two filter parts and at least one filtering slot between the filter parts. The filter parts are adapted to move in ... | 02/21/2006 |
| 6959817 | Cooling makeup water intake cartridge filter for industry An industrial, e.g. power plant cooling, water extraction framed cartridge filter system is disclosed with a holed fabric type medium to filter debris from the power plant cooling water. The fabric type filter medium is comprised a one or more strength meshes of nyl... | 11/01/2005 |
| 6849206 | Paste for forming thick film, method for manufacturing thereof, and filter apparatus A method for manufacturing a paste for forming a thick film is provided, in which undesired lump materials are efficiently removed from the paste for forming the thick film. The paste, which contains a solid material and an organic vehicle and has a viscosity in the... | 02/01/2005 |
| 6419826 | Self-cleaning filter Improved self-cleaning filter, comprised of a casing (1) with an entry (2) for water towards an encircling chamber (5), a filtering element based on a plurality of grooved disks (10), an axial passage (14) in the breast of these disks and an axial exit (9... | 07/16/2002 |
| 6398037 | Reverse flow spin-cleaning liquid filters A liquid filtering device having a pack of cylindrical filter member discs (70) with an arrangement for reversed, filter flushing flow cycles. An integrally formed filter core (24) is provided comprising tubular nozzled conduits (30a, 30b, 30c) so that wa... | 06/04/2002 |
| 6309552 | Slack filter tube having an internal resilient support extending there through A filter tube for use in earth coated type filters includes a flexible permeable tubular sheet internally supported by a helical spring. The internal spring is connected between opposite ends of the filter tube to support the full length of the tube wall.... | 10/30/2001 |
| 6283305 | Filter apparatus with backwashing mechanism For uniformly, satisfactorily, and automatically removing foreign matter that has accumulated on the filter, the apparatus includes a housing having an inflow portion and an outflow portion, a filter having a large number of piled resilient filter chips b... | 09/04/2001 |
| 6217781 | Applications for slack filter tube with tensioning means Slack end filtering tubes with tensioning members are utilized in an improved bump type filter employing a split inlet with an outlet and tube sheet at the lower slack end and a movable anchor plate at the upper end that can apply an adjustable tension to... | 04/17/2001 |
| 6209728 | Filter element A filter medium, which is resiliently expandable in an axial direction and is able to deform the filtration gaps in size in accordance with its expansion, including a compression limiting member for providing required filtration gaps by limiting the amoun... | 04/03/2001 |
| 6165354 | Filter having a filter element adjustable to a bypass position A filter has a filter housing. An adjustable support couples a filter element to the filter housing. A first end of the adjustable support is fixedly connected to the housing. A movable portion of said adjustable support is coupled to said filter element.... | 12/26/2000 |
| 6117321 | External tension adjustment device for a filtering sleeve in a filtering machine An adjustable elastic support is provided for a filtering sleeve. A tilting body 1 has one extremity with an inlet 2. A filter unit 3 is lodged inside the body 1. The lower portion of the body 1 is provided with an outlet 5 for the filtrate. An outlet 6 f... | 09/12/2000 |
| 6116429 | Filter housing extension kit An extension kit for adaptation to an existing filter housing provides a two-fold increase in filtering surface area, while inducing a vibration into a resultant filter housing structure which resultantly loosens entrapped impurities to extend the life an... | 09/12/2000 |
| 6106715 | Membrane filtration assembly A novel spiral membrane arrangement is disclosed comprising opposing elongate filtration membrane units, spiraled about a base axis and separated by a novel lattice separator having spaced apart elongate primary laths which form fluid passageways, bridged... | 08/22/2000 |
| 6098813 | Waste water grease filter A waste water filter system has a collector body (14), a disposable filter (20) positioned within the collector body which retains particulate matter and grease while not retaining waste water, and an access aperture (28) in the collector body for removin... | 08/08/2000 |
| 6077422 | Liquid filtering apparatus A liquid filtering apparatus which reduces or eliminates the need for regular manual cleaning or backwashing. Backwashing of the filter occurs automatically in response to sensed conditions of filtering. The filtering apparatus includes a chamber, and a f... | 06/20/2000 |
| 6051138 | Slack filter tube with tensioning means A filter tube for use in earth coated type filters includes a flexible permeable tubular sheet internally supported by a helical spring which in one embodiment extends partially along the length of the filter tube. The unsupported free end or an intermedi... | 04/18/2000 |
| 6041944 | Spiral multiple-tube filter A multiple tube filter made of at least one perforated filter element (15), wherein the outside of the filter element (15) has spirally circulating grooves (2), and the surface between grooves (2) is preferably arched outward in the form of a segment of a... | 03/28/2000 |
| 5984108 | Fluid filtering system with variable filter layer A permanent fluid filtering system includes a cylindrical body having an upper end, to which an inlet tube is connected, and a lower end, to which an outlet tube is connected, and a latitude thread filter assembly disposed within the cylindrical body. The... | 11/16/1999 |
| 5792353 | Helical filter candle including evenly spaced turns and compressed ends and method of its manufacture In order to avoid dead spaces which are difficult to subject to backflushing and in which particles can be deposited, a special helical filter candle, a method of manufacture of said helical filter candle as well as an end portion (11) for a helical filte... | 08/11/1998 |
| 5783083 | Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces A gas-scrubbed vertical cylindrical skein of "fibers" has their opposed terminal portions held in headers unconfined in a modular shell, and aerated with a cleansing gas supplied by a gas-distribution means which produces a mass of bubbles serving the fun... | 07/21/1998 |
| 5736039 | Elastic support and shock absorbing device with a filter filtering sleeve An elastic support is provided for a separating filter filtering sleeve. A tilting filter body (1) has one extremity with an inlet (2). A filter unit (3) is lodged inside the body (1). A rinsing device (4) for the filter unit (3) is provided at the top of... | 04/07/1998 |
| 5725767 | Torsion resistant filter structure A filter cartridge for separation of aqueous colloidal suspensions utilizing a shell which forms a chamber having a colloidal suspension inlet and outlets for permeate and concentrate streams. A core is placed within the shell and includes a plurality of ... | 03/10/1998 |
| 5695651 | Inlet screen The invention relates to the treatment of liquid waste such as sewage. The invention provides a method of screening of liquid waste to remove solid material therefrom, comprising passing the liquid waste in a downward stream through a suspended sack filte... | 12/09/1997 |
| 5681466 | Filtering appliance for cleaning cooking oil A filtering appliance for cleaning cooking oil in a food fryer is designed and dimensioned for single-handed portable use in "hand-gun" fashion. The appliance has an elongate casing means with a hand grip at one end adjacent a pump-and-motor assembly. An ... | 10/28/1997 |
| 5639365 | Fluid filled and collapsing polymeric filter tube having a supporting sleeve A filter consisting of a filter tube of a porous polymeric material having tendency to collapse towards a predetermined flattened configuration and a porous support sleeve disposed around the filter tube, so as to support the filter tube against internal ... | 06/17/1997 |
| 5639373 | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate A vertical skein of "fibers", opposed terminal portions of which are held in headers unconfined in a modular shell, is aerated with a gas-distribution means which produces a mass of bubbles serving the function of a scrub-brash for the outer surfaces of t... | 06/17/1997 |
| 5628898 | Backwashable filter having elements with elastically deflectable lips The invention relates to a backwashable filter, which comprises superimposed elements, particularly having an annular design, for producing filter candles. In the case of the filter candles the elements are subject to a radial through-flow from the inside... | 05/13/1997 |
