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| Number | Title | Issue Date |
| 7442295 | Water purification and treatment apparatus and treatment process using the apparatus The present invention provides a water purification and treatment apparatus using a combination of sedimentation, filtration, and bio-contact aeration processes, which comprises at least one rapid water purification filter having a hopper base for settled sludge and... | 10/28/2008 |
| 7141167 | Filter device A filter device for filtering liquids including a filter membrane, a main body which is arranged upstream from the filter membrane, and which has a feed channel perpendicular to the surface of the filter membrane, a gap extending between the filter membrane and the ... | 11/28/2006 |
| 7135114 | Filtration device In a filtration device (1) comprising a pressure-resistant housing (2) with a liquid inlet opening (3) and an outlet opening (4) for filtered matter, into which a collecting channel (12) terminates, at least one filter element (... | 11/14/2006 |
| 7094337 | Overflow chamber An overflow chamber (2) is provided for use in a combined sewer overflow. An inlet (12) and an outlet (14) open into the chamber (2) below a screen (20), and an overflow outlet (15) opens into the chamber above the screen. B... | 08/22/2006 |
| 6953123 | Pre-separation of feed material for hindered-bed separator A pre-separator feed well for use with hydrous slurry feed is provided in a hindered-bed separator that includes an elongate body defining an interior space with upper and lower portions. The feed well is elongate and includes a vertically adjustable conical plate a... | 10/11/2005 |
| 6939465 | Fluid filter system for snow making apparatus A fluid filtering system for filtering dirt and other debris from fluids being conveyed in a pipeline for snow making apparatus and other devices. An upright pipe segment is connected to a horizontal pipe segment through a pipe elbow or angle for conveying fluid suc... | 09/06/2005 |
| 6860991 | Drain trap clean-out system An interior pipe has an upper end, a lower end and a central extent. An exterior pipe has an upper region receiving the central extent of the interior pipe and a lower region receiving the lower extent of the interior pipe. The lower region terminates with a removab... | 03/01/2005 |
| 6849176 | Grease separator for kitchen sinks and other applications An oil/grease separator separates a lighter liquid from a mixture of the heavier liquid and a lighter liquid. A housing has an inner volume, an inlet to receive influent flow, an outlet to discharge the heavier liquid, which defines a static liquid level, and an out... | 02/01/2005 |
| 6773585 | Device for separating fluids The invention relates to a fluid separating device for separating fluids and solids from a composite liquid. Said separating device comprises a channel (12) which is arranged transversely upwards with a closed lower end and an outlet (19). Said channel... | 08/10/2004 |
| 6637504 | Installation for recovering debris stopped by a filter at the inlet of a heat exchanger An installation for recovering debris stopped by a filter at the inlet of a heat exchanger: a washing water manifold (36) at the outlet of the filter (11) feeds a separator (37) provided with an outlet pipe (39) for water free of debris to which is connec... | 10/28/2003 |
| 6558542 | Water filter A water filter includes an egg-shaped housing formed from a lower shell and an upper shell. The lower shell is divided into an intake chamber and an outflow chamber. A filter or membrane is placed between the upper and lower shells.... | 05/06/2003 |
| 6461523 | Solids separation mechanism A mechanism and method for separating solids from a slurry includes a screen, and an extractor screw connected to the screen outlet by means of a flexible conduit, wherein the outlet of the extractor screw is at a higher elevation than the outlet of the s... | 10/08/2002 |
| 6365045 | Apparatus for use in a sewage treatment plant An apparatus for use in a sewage treatment plant comprises a settlement tank, an inlet channel for delivering an input sewage flow to the settlement tank, and a screen arrangement having a continuous belt screen for capturing screenings contained within t... | 04/02/2002 |
| 6238110 | Apparatus and a method for preparing a processing bath, a manifold, and a use of a manifold An apparatus for the preparation of a bath (15) for processing photographic material comprises a tank (14) adapted for holding the bath, a container (18) for holding a feedstock fluid and a separator (1) in fluid communication with the container to receiv... | 05/29/2001 |
| 6210569 | Device for collecting water polluting phytoplankton drifts and method for collecting water polluting phytoplankton drifts A device for collecting water polluting phytoplankton drifts and a method for collecting water polluting phytoplankton drifts by use of such device is provided such that the deterioration of water quality as a result of extraordinary proliferation of phyt... | 04/03/2001 |
| 6171483 | Subsea raw water injection facility A subsea raw water injector including a pump which is connected to an injection string and a filter connected to an inlet of the pump to remove particulates from the surrounding sea water. The filter is in the form of an inclined tube settler disposed suc... | 01/09/2001 |
| 6139730 | Multichamber gravity operated oil-water separator An automatic oil-water separator which separates wastewater into oil or grease and water fractions is disclosed. The separator does not include any mechanical pumps in its structure and therefore does not generate oil or grease and water emulsions which a... | 10/31/2000 |
| 6001242 | Apparatus and method for high volume pipeline water filtration A method and apparatus for filtering particulates from a turbid liquid is provided. The apparatus is preferably used to filter particulates from water used to flush a pipeline after a cleaning operation, after hydrostatic testing or during product displac... | 12/14/1999 |
| 5879552 | Method and apparatus for a self-purifying filter system A self-purifying filter apparatus comprising (1) a filter having a first surface and a second surface; (2) flow control means, such as a vacuum pump, for causing a stream of fluid interspersed with solid particulates to pass from the first surface to the ... | 03/09/1999 |
| 5851386 | Waste-oil cleaning apparatus A waste-oil cleaning apparatus includes a processing tank for holding waste-oil, and arranged such that non-oil liquids in the waste-oil settle in the base of the tank. A conduit and valve arrangement is provided for withdrawing the settled non-oil liquid... | 12/22/1998 |
| 5788859 | Self-evacuating water-separating fuel filter A spin-on water-separating fuel filter has a built-in central drain tube for providing a sump port at the connection end of the spin-on filter located near the fuel inlet and fuel outlet ports. Water removed from the fuel is collected in a sump at the bas... | 08/04/1998 |
| 5770092 | Apparatus and method for purifying water The invention provides a multi-stage apparatus for continuous waste water filtration, comprising a first tank provided with a waste water inlet pipe to supply waste water containing suspended solids to the tank, means for adding a coagulant to the waste w... | 06/23/1998 |
| 5738782 | Cleaning apparatus for fluids Apparatus for cleaning fluids, especially cooling lubricants of machine tools. The apparatus includes a tank having a partition subdividing it into a sedimentation chamber and a clean chamber and having an inlet for the contaminated cooling lubricant and ... | 04/14/1998 |
| 5702617 | Particular removal assembly and method A particulate removal assembly for a fluid distribution system comprising a particulate collection chamber having an inlet through which particulate and fluid enter said collection chamber; a detector for sensing when said chamber has fried to a preselect... | 12/30/1997 |
| 5690813 | Fluid separator apparatus An apparatus for separating contaminated waste water into a substantially uncontaminated homogeneous extract water portion and into a heterogeneous raffinate fluid portion. Upon being subjected to sufficient circular flow, in an environment emulating the ... | 11/25/1997 |
| 5587067 | Wastewater treatment apparatus Headworks for preliminary treatment of wastewater in a sewage treatment plant provides for primary filtration of grit and other coarse debris, de-ragging in a flume which carries the water away from the filter, chemical addition in a chemical mixing tank ... | 12/24/1996 |
| 5534138 | Fuel separator apparatus An apparatus for separating a contaminated liquid diesel fuel and the like into a substantially uncontaminated homogeneous raffinate fuel portion and into a heterogeneous extract portion. Upon being subjected to sufficient circular flow, in an environment... | 07/09/1996 |
| 5529695 | Apparatus and method for removing swarf and fines from cutting fluids A system for removing particulates, formed as metal is machined, from coog and lubricating fluid. The system has a tank filled with fluid. The bottom of the tank slopes forward. The tank receives contaminated fluid at its top rear. The contaminants are s... | 06/25/1996 |
| 5489381 | Extruder apparatus for separating solids from fluids A novel apparatus for isolating solids, slurries or wetcakes from fluids is disclosed. Said apparatus comprises an extruder having a dynamic seal and a barrel comprising a slip joint and a floating auger which allows for solid recovery under pressure in t... | 02/06/1996 |
| 5480541 | Extruder apparatus for isolating solids from fluids A novel apparatus for isolating solids, slurries or wetcakes from fluids is disclosed. Said novel apparatus comprises an extruder having a dynamic seal and a barrel comprising an auger and a movable cap which allows for solid recovery under pressure in th... | 01/02/1996 |
| 5466370 | Apparatus for isolating solids from fluids A novel apparatus for isolating solids or wetcakes from fluids is disclosed. Said apparatus is closed to the atmosphere and comprises a torque sensor and movable cap which allows for solid recovery under pressure without requiring substantial solvent vola... | 11/14/1995 |
| 5462658 | Fuel filter system A fuel filter system for conditioning fuel flowing from fuel supply means to an internal combustion engine, comprising a fuel filter head having a contaminant outlet port, and fuel inlet and fuel outlet ports respectively adapted for connection to the fue... | 10/31/1995 |
| 5368731 | Vacuum assisted slaker classifier The grit conveyance system of a classifier having a wash region above the liquid layer is provided with a vacuum means in the wash region for positive removal of liquids through a metal screen for disposal.... | 11/29/1994 |
| 5174892 | Permanent fuel filter A primary filter for the fuel supply circuit of a combustion device such as a motor vehicle engine which removes particulates and other contaminants from the fuel prior to being passed through a transfer pump. The primary filter of this invention replaces... | 12/29/1992 |
| 5143575 | Spiral wound filter and method of making same The fluid filter (10) for fuel has a wound filter element (17) arranged in the housing (11) surrounded on its bottom end face (22) by a funnel-shaped welded-on cover cap (18). The cover cap (18) made of thermoplastic has an annular welding surface (25) wh... | 09/01/1992 |
| 5112479 | Oil purification unit with cyclonic reservoir section and filtration section A mobile purification apparatus for purifying oil contaminated with grit, metal particles, water and the like. The apparatus includes a strainer with a filter cartridge for removal of large contaminant particle and a filter apparatus. The filter apparatus... | 05/12/1992 |
| 5053120 | Arrangement for draining water collecting in the container of a water separator of an internal-combustion engine The invention relates to an arrangement for the automatic removal of water collecting in a fuel filter having a water separator. The evacuation takes place by means of a piston acted upon by a pressure medium, preferably a fuel pressurized by the pressure... | 10/01/1991 |
| 5047157 | Coolant filtration A centrifugal particulates filter has inlet and outlet ports for coolant flow, and a flushing port for handling partiulates removed from the main coolant stream. The flushing port is connected to a coiled capillary tube to maintain a constant drain flow o... | 09/10/1991 |
| 4995992 | Apparatus for heating and demoisturizing diesel fuel A fuel treatment apparatus having a settling chamber with a fuel introducing conduit passing through the top of the chamber and extending to a lower portion of the chamber to define a fuel inlet in the lower portion of the chamber. A bouyant valve means i... | 02/26/1991 |
| 4994332 | Metal hydroxide crystallizer and filter The present invention comprises a closed-loop filter system for continuously removing a metal hydroxide precipitate from an alkali metal hydroxide solution. The filter system comprises a filter having a filter surface and a plurality of small diameter ope... | 02/19/1991 |
