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| Number | Title | Issue Date |
| 7404895 | Filter apparatus for separating particles from a liquid A filter apparatus for separating particles from a liquid having a tank with a feed inlet, a gravitational settling zone and a filtration zone arranged downstream of the settling zone. Inside the tank are two transversely spaced-apart endless chains with transversel... | 07/29/2008 |
| 7371321 | Fluid filtration system A filtration system (10) for removing contaminants from a fluid is provided. The system includes a housing (44) having a convex shaped base (78) and a top (84), with filter media (46) disposed within the housing. The filter media m... | 05/13/2008 |
| 7364652 | Screening apparatus Screening apparatus (101,901) for use at an overflow weir (301, 902) in a sewerage system. The apparatus comprises a continuous moving screen band (201, 902) and a band cleaning mechanism (608). A first portion (801) of the screen ... | 04/29/2008 |
| 7360655 | Material handling system having a scoop wheel A material handling system is provided. The material handling system includes a tank defining a reservoir for receiving a solid material, and a wheel including a plurality of circumferentially spaced apart scoops for scooping solid material from the tank and subsequ... | 04/22/2008 |
| 7357259 | Material classifier having a scoop wheel A material classifier for classifying a liquid-solid mixture containing solid material to be separated is provided. The material classifier includes a tank defining a reservoir for receiving the liquid-solid mixture, and a scoop wheel including a plurality of circum... | 04/15/2008 |
| 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 |
| 7314141 | Folding belt filter A belt filter for effecting separation of liquid from solids where, at the collection zone, a filter belt or belts is changed shape so as to provide a supporting shape to bold liquid, which is then fed into a nipping zone. In an embodiment there is a single belt use... | 01/01/2008 |
| 7159446 | Particulate matter concentration measuring apparatus A highly sensitive particulate matter concentration measuring apparatus for measuring a concentration of particulate matter in a sample gas collected in a collecting region formed on a collecting medium, the collecting region being formed by drawing the sample gas t... | 01/09/2007 |
| 7152745 | Filter bypass monitoring system A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into... | 12/26/2006 |
| 7066336 | Micro-filtration A filter assembly for ultra-filtration of fluids such as waste water comprises a porous tube which is incrementally advanced into the fluid so as to expose a fresh portion periodically and maintain a flow rate over a period of time. ... | 06/27/2006 |
| 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 |
| 6994795 | Device and method for the filtration of viscous material An apparatus for filtering viscous material, in particular thermoplastic synthetic plastic material, comprises a screw (24), which presses the material to be cleaned from an upstream conduit (3) of a supply housing (2) towards a band-shaped scre... | 02/07/2006 |
| 6951606 | Auxiliary filtration system for an engine An auxiliary oil filtration system and method for filtering oil in an engine is provided. The auxiliary oil filtration system consists of an auxiliary filtration device, an integral oil transfer pump controlled by an electric motor and that is in electrical communic... | 10/04/2005 |
| 6932117 | Reactor water isolation devices A seal clamp assembly for sealing an opening in a piping system includes, in an exemplary embodiment, a base having a first side, a second side and an aperture extending therethrough from the first side to the second side, and a brace coupled to the base. The brace ... | 08/23/2005 |
| 6846421 | Filtering method and filter chamber sealing arrangement A liquid filter method includes use of a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper reg... | 01/25/2005 |
| 6811685 | Fouling mitigation device with movable screen A self-cleaning strainer which may be installed upstream of a heat exchanger to prevent debris greater than a critical size from reaching the heat exchanger. The strainer is preferably mounted just upstream of a heat exchanger in order to minimize the possibility of... | 11/02/2004 |
| 6797185 | Filtration method for graft polymer polyols An index filtration method is disclosed for filtering graft polyol dispersions. The method allows for the rapid filtration of large volumes of graft polyol dispersion in an economical manner. The process can be highly automated. The resulting filtered graft polyol d... | 09/28/2004 |
| 6761820 | Paint-sludge filtration system featuring pool aeration using high-pressure discharge from filter vacuum producer A paint overspray particulate filtration system includes a collection tank, a floatation consolidation tank, and a vacuum filter assembly having a filter medium that traverses a pair of vacuum chambers. A positive displacement vacuum producer for the first vacuum ch... | 07/13/2004 |
| 6736965 | Auxiliary filtration system and filtering method An auxiliary oil filtration system and method for filtering oil in an engine is provided. The auxiliary oil filtration system consists of an auxiliary filtration device, an integral oil transfer pump controlled by an electric motor and that is in electrical communic... | 05/18/2004 |
| 6578714 | Mobile washer with fluid reclamation system A fluid reclamation system is provided for separating large debris particles from a polluted fluid. The reclamation system includes a separation device with an endless screen installed onto driven cylinders. A basin is mounted within the screen for collec... | 06/17/2003 |
| 6555013 | Treatment method for things like sludge and treatment apparatus A method and apparatus for treating an aqueous-containing sludge in which the sludge is filtered on an elongate moving sheet of a water permeable unwoven fabric on paper. The moving sheet is folded and compressed between rollers whereby to express water t... | 04/29/2003 |
| 6495031 | Enclosed belt filter apparatus A liquid filter apparatus includes a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an up... | 12/17/2002 |
| 6491817 | Shallow chamber filter apparatus A pressure filter includes two continuous mating surfaces movable relative each other and a filter medium capable of being disposed therebetween. A surface, provided for supporting the filter medium, is bounded by and is substantially coplanar with one of... | 12/10/2002 |
| 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 |
| 6375013 | Device for cleaning viscous material A cleaning device for removing solid impurities from viscous material, in particular molten plastics material, comprising, inside a housing (1), a filter band (5) for separating out solid impurities which can be moved in the longitudinal direction of the ... | 04/23/2002 |
| 6350377 | Device for thickening liquids or sludges An apparatus for thickening liquids or thin sludges by water extraction, having a bottom, a tub having an underside, stands supporting the tub on the bottom, a ripening time chamber for receiving the liquids or thin sludges, first devices for admixing a p... | 02/26/2002 |
| 6273270 | Dam fed unrollable media filter subsequently folded along its length and rewound According to a waste water treatment method and apparatus of the present invention, a permeable sheet 3 is fed into a treatment tank 2 in which a stream is formed. The waste water, which flows downstream, is caused to pass through the permeable sheet 3, w... | 08/14/2001 |
| 6241900 | Unrollable media filtration with subsequent folding and pressing of media According to a waste water treatment method and apparatus of the present invention, a permeable sheet 3 is fed into a treatment tank 2 in which a stream is formed. The waste water, which flows downstream, is caused to pass through the permeable sheet 3, w... | 06/05/2001 |
| 6224273 | Process and device for the continuous separation of the constituents of an engraving bath The invention relates to a process for the manufacture of photopolymer printing blocks, which are utilizable for producing printed matter by flexography, typography or dry offset, of the type including a stage for polymerizing areas by exposure to ultravi... | 05/01/2001 |
| 6174446 | Vacuum filter apparatus and method for recovering contaminated liquid A filter system employs a pressure differential to draw liquid from a first liquid vessel through a filter media to a filtered liquid chamber. A pressure assembly generates a reduced pressure in the chamber. One embodiment of the filtration apparatus incl... | 01/16/2001 |
| 6159359 | Modular filter apparatus A modular filter apparatus is formed from stacked filter modules. Slurry to be filtered flows into the apparatus through a flowmeter and check valve into a header. The flow of slurry then branches off through feeders to each of the filter modules. Connect... | 12/12/2000 |
| 6149807 | Self-locking filter-screen feeding device A self-locking filter-screen feeding device for plastic material; the device comprises a carriage which may be reciprocated on guide rods parallelly extending to a filter band movable across a flow-path for the plastic material to be filtered in a filter ... | 11/21/2000 |
| 6146540 | Dehydration of sludge by injecting sludge into a sequentially connected series of permeable bags and then squeezing the bags A plurality of unit bags 2a, 2b . . . are composed of a permeable strip-shaped nonwoven and arranged in a successive fashion without break so that they can be easily accommodated and stored by being rolled. An annular elastic body 5 disposed around an ope... | 11/14/2000 |
| 6126336 | Apparatus for the complete, continuous separation of a mixture of photopolymers and water with a membrane and filter, for the making of flexible plates useful in printing An etching device for preparing flexible blocks which can be used for printing in flexography, typography or dry offset generally includes an etching tank containing a bath (22) and brushes (3), a stirring and heating device, and an overfill system (20) f... | 10/03/2000 |
| 6117339 | Sealing arrangement for filter belt An method for filtering particulate materials from a fluid stream wherein a dirty fluid stream is passed through a moveable filter media and the cleaned fluid stream is recirculated in part to form filter media by-pass presenting liquid curtains along the... | 09/12/2000 |
| 6095343 | Gravity liquid filtration apparatus A gravity liquid filtration apparatus includes a housing with a pool forming assembly mounted between a pair of side walls in the housing. The pool forming assembly includes a central shaft with a pair of spaced-apart discs rotatably mounted on the shaft ... | 08/01/2000 |
| 6093315 | Sealing arrangement for filter belt An apparatus and method for filtering particulate materials from a fluid stream wherein a dirty fluid stream is passed through a moveable filter media and the cleaned fluid stream is recirculated in part to form filter media by-pass preventing liquid curt... | 07/25/2000 |
| 6089379 | Liquid filtration media support belt An endless belt for supporting a continuous web of filter media and moving it through liquid filtration apparatus where a pressure differential is applied across the belt and media. The belt may be fabricated at relatively low cost while retaining the req... | 07/18/2000 |
| 5968354 | Apparatus for recovering oil-based liquid An apparatus for recovering an oil-based liquid from a body of liquid including the oil-based liquid. The apparatus includes a pair of cooperating rollers defining a nip therebetween, an endless loop of oil-based liquid absorbent material that passes thro... | 10/19/1999 |
| 5961827 | Apparatus for dewatering of sludge and similar substances The invention relates an apparatus for the dewatering of sludge and similar substances with a sludge chamber (20) provided with filter areas (25) having at least one sludge inlet being connected to a device (3) creating a hydrostatic filtration pressure. ... | 10/05/1999 |
