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| Number | Title | Issue Date |
| 7028849 | Screen apparatus Screen apparatus comprising a screen (10) which allows fluid to pass through it whilst providing a barrier to non-fluid matter in the fluid. A jet outlet (22) is arranged to direct a jet of fluid across that side of the screen (10) on which such... | 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 |
| 6976592 | Liquid/solids waste separator A liquid/solids waste separator apparatus for use in separating animal waste or waste water into filtered liquid and collected solid waste particles. It has an elongated housing having a pair of support legs attached adjacent to the rear end of the housing for varyi... | 12/20/2005 |
| 6974369 | Grinding water tank unit for eyeglass lens processing and eyeglass lens processing apparatus having the same An eyeglass lens processing apparatus for processing an eyeglass lens includes: a processing chamber inside which a lens grinding tool is disposed; a tank which stores grinding water; a drain hose connecting the processing chamber with the tank; a filter for elimina... | 12/13/2005 |
| 6354442 | Filter with counter flow clearing A filter system (10) comprising a filter medium (11) for filtering contaminants from a process fluid, having a filtration side on which contaminants collect and a filtrate side from which filtrate flows; a counter-flow generator (20) located on the filtra... | 03/12/2002 |
| 6352266 | Seal for a liquid chromatography column A liquid chromatography seal capable of withstanding pressures in excess of 8000 to 10,000 psi utilizing an annular ring disposed upon either the seal or the seal seating surface. The annular ring is triangular in cross section. The triangular cross secti... | 03/05/2002 |
| 5996608 | Diaphragm valve with filter screen and movable wiper element A diaphragm-type control valve for irrigation systems has an outer clam-shell housing that encloses a vertically reciprocable diaphragm assembly. A primary valve seat inside the housing is engaged and disengaged by a seal on the underside of the diaphragm... | 12/07/1999 |
| 5024771 | Liquid filter and methods of filtration and cleaning of filter The disclosed filter element is a screen filter having a vane arranged on the outside surface of a screening element for improving the filtration of solid contaminants from a liquid undergoing filtration. A single cartridge screening element may be quickl... | 06/18/1991 |
| 4886608 | Apparatus and method for separating liquids and solids An apparatus for separating liquids and solids from a mixture thereof comprises a trough structure (12) in which is suspended a filter means (14) on which the mixture can be placed. A vacuum mechanism (16) draws a vacuum beneath the filter means to draw t... | 12/12/1989 |
| 4861384 | Fluid removal cannister device A fluid carrying chain is drawn through a perforated cannister containing fluid removal nodules that remove fluid from the chain.... | 08/29/1989 |
| 4786420 | Self-cleaning water filter system A self-cleaning water filter system for a household or the like having a plurality of water usage zones requiring varying water quality.... | 11/22/1988 |
| 4717476 | Water purification apparatus A water purification apparatus for household use in treating municipally supplied water for removal of solid and chemical contaminants in which serially connected first, second and third water purification stage units are contained in a compact cabinet en... | 01/05/1988 |
| 4603001 | Apparatus and method for filtering a fluid This disclosure relates to a filtering apparatus which incorporates a flow deflector, to divert an incoming flow of the fluid to be filtered, which serves as a device to cause one or more multifaceted bead members to circulate throughout and to impinge up... | 07/29/1986 |
| 4528097 | Symmetrical fluid filter apparatus with multifaceted beads A filter apparatus for removing contaminants from a fluid comprises a cylindrical body and first and second caps coupled to first and second ends of the cylindrical body. Each of the caps has an aperture therein for the flow of fluid therethrough and firs... | 07/09/1985 |
| 4526682 | Screen assembly for separating particulate material In an apparatus for separating particulate material of a selected size from particulate material of a smaller size, there is provided a screen assembly having a screen element for separating the particulate material. A tray assembly loosely supports impac... | 07/02/1985 |
| 4255255 | Tubular membrane separation process and apparatus therefor An apparatus and process for tubular membrane separation, such as reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposits from the semipermeable membrane surfaces. For the removal of the deposits, elastic elements are pas... | 03/10/1981 |
| 4204962 | Continuous analysis of beverages A method and analysis system for the continuous on-stream chromatographic analysis of beverages such as beer. Also disclosed are novel bypass filter devices that are especially suitable for use in the analysis system.... | 05/27/1980 |
| 4200531 | Tubular membrane separation apparatus The present invention relates to a tubular membrane separation apparatus used for purification of turbid water, concentration of liquid material, sea-water desalting and so on, which is characterized by a feedwater line, a tubular membrane member adapted ... | 04/29/1980 |
| 4198293 | Tubular membrane separation process and apparatus therefor A tubular membrane separation apparatus and process, for reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposit from semipermeable membrane surfaces. The apparatus is of the multiple-stage type wherein the number of tubul... | 04/15/1980 |
| 4107040 | Drive device for rake arm with attached screen comb in cleaning device for a water conduit screen A device for cleaning of a screen located in a water conduit is provided h a screen rake which has a screen comb at one end thereof, the screen rake being mounted and driven by a chain to be guided in a path such that the screen comb cleans the screen, d... | 08/15/1978 |
| 4039452 | Self-cleaning filter A self-cleaning filter includes a housing having a compressible filter element and a compression spring for applying spring pressure to the filter element. Unfiltered fluid, at line pressure, is forced upwardly through the filter element. Spring tension i... | 08/02/1977 |
| 3960731 | Self cleaning screen assembly A self cleaning screen assembly according to the present invention is adapted for utilization in conjunction with an oscillating mechanical separator incorporating a screen framework having a screen and a perforated support plate connected thereto and dis... | 06/01/1976 |
