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| Number | Title | Issue Date |
| 8048296 | Filtering device for liquid filtration An apparatus for filtering liquid that includes a filter having an external surface; a rotatable shaft extending through the filter; and a movable member coupled to the rotatable shaft. The movable member is configured to impart a suction force at various locations ... | 11/01/2011 |
| 7820039 | Apparatus for the continuous filtering of impurities from a flowable compound The invention relates to an apparatus for the continuous filtering of impurities from a flowable compound, especially a plastic melt, comprising a filter insert (3) in the form of a hollow rotary body which is held to rotate about its rotational axis (A) rela... | 10/26/2010 |
| 7807050 | Backwash assembly and method having a rotating backwash arm for cleaning cloth filter media The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices, including improved cloth media filter backwashing using a rotating backwash arm assembly. ... | 10/05/2010 |
| 7537689 | Tertiary filter An apparatus for filtering suspended solids from a liquid having a group of filters mounted inside a filter chamber. The filters divide the chamber into dirty liquid chambers and clean liquid chambers. A wash assembly is disposed within the chamber having vacuum/pum... | 05/26/2009 |
| 7381335 | Method and arrangement for continuous filtering of particles out of a liquid Method and arrangement for continuous filtering of particles out of a contaminated liquid by means of a number of separate filtering units (14) in order continuously to feed purified liquid to a consumer. Each filtering unit (14) comprises a rotatable,... | 06/03/2008 |
| 7370445 | Sludge removal A sludge removal apparatus includes a sludge removal head (10) with a sludge suction duct and an water supply duct with open end portions alongside each other, and a filter (32) adjacent to the open ends of the suction duct (36) and the water su... | 05/13/2008 |
| 7353832 | Housingless washer An industrial parts washer includes a stand adapted to support a part, a chamber selectively movable from a first position clear of the part to a second position engaging the stand where the chamber forms a closed volume encapsulating the part. A nozzle is positione... | 04/08/2008 |
| 7351269 | Self cleaning filter and vacuum incorporating same A brush configured to move repeatedly over a vacuum filter. The brush will remove dust particles to prevent them from clogging the filter. In the preferred embodiment, the brush is mounted on a revolving shaft. As the shaft turns it moves the bristles of the brush o... | 04/01/2008 |
| 7347933 | Self-cleaning intake screen A self-cleaning screen that automatically cleans both the inside and outside surfaces of the cylindrical screen using only the rotation of the cylindrical screen itself. This self-cleaning ability is accomplished by using a fixed brush on the exterior surface of the... | 03/25/2008 |
| 7338565 | Housingless washer An industrial parts washer includes a stand adapted to support a part, a chamber selectively moveable from a first position clear of the part to a second position engaging the stand where the chamber forms a closed volume encapsulating the part. A nozzle is position... | 03/04/2008 |
| 7334688 | Filtration system and seal assembly A filtration system includes a filter medium that has two side edges. The filter medium is moveable in a longitudinal direction, and at least a segment of the filter medium is used to filter a fluid. Seals are used to seal the filter medium segment's side edges, and... | 02/26/2008 |
| 7294257 | Water filter A filter unit for filtering particulates and other foreign matter from a water supply, comprising a filtering chamber. At least a portion of an exterior of the filtering chamber being provided with filtering chamber in use. The mesh being sized to filter particulate... | 11/13/2007 |
| 7288186 | Filtrate immersed activation assembly for disk filters A self cleaning filtration device wherein an activation piston, laterally supported within an activation cylinder is immersed in filtrate within the confines of an immersion chamber. The immersion chamber receives filtrate from a disk filtration stack via orifices a... | 10/30/2007 |
| 7258784 | Solid liquid filtration apparatus and method A method and system for separating a particulate contaminate from a contaminated liquid medium involves filtering the contaminated liquid medium with a filter element having an afflux surface made of plastic particles that are sintered together. The contaminated liq... | 08/21/2007 |
| 7249472 | Device for treating textile or similar in a continuous stream The invention relates to a device for treating web-type textiles, nonwovens or paper in a continuous stream, uses a gaseous treatment agent that circulates in the device. The product lies on the exterior face of a permeable drum (5), which is subjected to an ... | 07/31/2007 |
| 7243512 | Filter assembly of washing machine A filter assembly for a washing machine is provided which uses a simple structure to separate dirt and/or particles from washing water using. The filter assembly includes a filter case with an inlet and an outlet each positioned along its circumference, and an openi... | 07/17/2007 |
| 7229527 | Method for the controlled thickening of low consistency fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 06/12/2007 |
| 7228910 | Safety mechanism for weight-set downhole tool A safety trip button (12) is described for a weight-set downhole tool. The button operates between the tool body (36) and a sleeve (34) of the tool, locking them initially together. When the tool reaches a selected formation (44) in a wel... | 06/12/2007 |
| 7192528 | Self-cleaning filter apparatus A self-cleaning filter system is disclosed that includes an inlet fitting that is adapted to be inserted into an existing filter body. A spray tube having a plurality of outlets that slideably engages the inlet fitting, is positioned in the ring discs of the existin... | 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 |
| 7182207 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/27/2007 |
| 7125486 | Device for removing small solids from water in canal There is disclosed a device for removing small solids from water. The device includes an axle and a plurality of rotational filtering units installed on the axle. While rushed and hence rotated by water and small solids, the rotational filtering units filter the sma... | 10/24/2006 |
| 7105090 | Backflushing filter A filter has three filter elements, e.g., screens, for trapping particulate material while allowing passage of a fluid. The second sides of each of the first and second screens are connected to an intermediate passage, and the second side of the third screen, and th... | 09/12/2006 |
| 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 |
| 7077957 | Overflow screening device A screening device which is particularly useful for separating solids from liquids when sewerage systems overflow. The device includes an inner apertured chamber and an internal brush arrangement for sweeping over the apertures to prevent clogging. A spray enables t... | 07/18/2006 |
| 7055699 | Self-cleaning mechanical filter A self-cleaning mechanical filter comprises a mechanism for simultaneously cleaning the internal surface and the external surface of a filter element. The filter is provided with structure for performing suction scanning of solid materials accumulated on the interna... | 06/06/2006 |
| 7029579 | System for solid-liquid separation A system for use in filtering a slurry using air pressure to squeeze the slurry material and dewatering it. The system including a source of slurry, a chamber, a filter belt that passes through the chamber, a manifold inlet supplying the slurry to a first side of th... | 04/18/2006 |
| 7001506 | Self-cleaning circulatin system and method The present invention provides a system and method for providing a self-cleaning water circulation system which may be utilized for a fish pond, fountain, or the like. Means for automatically cleaning the pump intake to avoid pump failure due to leaves and debris is... | 02/21/2006 |
| 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 |
| 6997325 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/14/2006 |
| 6959818 | Filter and filter cleaning apparatus and related methods Apparatus and methods include an improved filter (203) and cleaning process. ... | 11/01/2005 |
| 6942786 | Cleaning device for waste water Cleaning device having an endless filtering belt (31) guided through a waste water container (33) for filtering of waste water. The filtering belt is guided over a series turn rollers (32, 34, 36, 37) so that the belt in a certain region runs su... | 09/13/2005 |
| 6890443 | Spin filter system A spin filter apparatus for cleaning an influent stream is provided and includes a housing having at least one inlet port for receiving the influent stream, at least one waste port for discharging waste and at least one output port for discharging a processed clean ... | 05/10/2005 |
| 6887372 | Portable drilling water filter with self-cleaning system A drilling water filter (1) with a self-cleaning system including a filter container (2), a cover (3) and a filter element (6) that can be inserted in the flow arm between an inlet (4) and an outlet (5) for separation of sol... | 05/03/2005 |
| 6875364 | Self-cleaning fluid filter system A self-cleaning, back-washable filter apparatus and method for use with a pumping apparatus which is lowered into a well casing. The filter apparatus includes a filter basket having a manifold with several tubes extending therefrom. A filter sock encases at least a ... | 04/05/2005 |
| 6767432 | Apparatus for the thickening of fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 07/27/2004 |
| 6752920 | Integral valved filter A self cleaning filter includes a body (15), inlet (1), outlet (14), flush inlet (12) and waste outlet (2). Elements (7) provide filtration while compressed but are cleaned decompressed. Feed from inlet port (3), impa... | 06/22/2004 |
| 6500344 | Method and apparatus for filtering particles out of a liquid Method and arrangement for filtering particles out of a liquid, in which the liquid containing particles is supplied to a sedimentation tank (12), and the liquid is made, by means of hydrostatic liquid pressure prevailing in the tank, to flow through a fi... | 12/31/2002 |
| 6478969 | Shear separation method and system A shear separation system or method uses shear lift forces and permeate drag forces to separate substances having a size less than a predetermined separation size from substances having a size greater than the separation size. The balance of the drag forc... | 11/12/2002 |
| 6475377 | Media vacuum filter An apparatus for removing solids from a liquid/solid mixture disposed in a tank and rising to a mixture level, the apparatus including a suction assembly defining a suction opening, the suction assembly linked to a vacuum that causes suction at the openin... | 11/05/2002 |
