Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7530463 | Backwashable filtering device A backwashable filtering device for thermoplastic plastics material is disclosed. The device can filter thermoplastic plastics material through one or more nests of screens in the filtering position, while submitting some nests of screens to the backwashing process ... | 05/12/2009 |
| 7422690 | Filtering system A filtering system comprising an inlet (11) for liquid to be filtered and an outlet (9) for filtered liquid, as well as filtering means, which system is characterized in that the filtering means, placed in series comprise: a first filter (2) com... | 09/09/2008 |
| 7390419 | Waste water recovery system A waste water recovery system to filter and recirculate waste water to a wash system including a fluid recovery line, a fluid supply line and a fluid backwash line comprising a filter assembly including a water filtering section to receive waste water from the wash ... | 06/24/2008 |
| 7264716 | Membrane filtration manifold system A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting collar connected with said housing. The collar is adapted to receive... | 09/04/2007 |
| 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 |
| 7097046 | Automatically cleaning filter assembly for a liquid-carrying loop A filter assembly for an aquarium has a self-cleaning filter. A fine mesh filter screen is disposed between an inlet and an outlet for filtering solid matter from the water that is pumped from the aquarium, through the filter, and back to the aquarium. When the filt... | 08/29/2006 |
| 7077962 | Method and apparatus for parallel desalting Parallel desalting (PDS) includes a hybrid membrane softening (MS) system for de-mineralizing water for residential and commercial use. Parallel desalting produces “soft” water without the use of salt, or any other liquid chemical reagent normally used to carry ... | 07/18/2006 |
| 7056442 | Method and apparatus for flushing contaminants from a container of fluids A contaminant-flushing machine for removing contaminants from a container, such as an engine transmission, air-conditioner coil, or transmission cooler, which includes hoses for coupling to the transmission cooler and a pump for circulating fluid through the hoses a... | 06/06/2006 |
| 7032760 | Backwash flushing filter An inline backwash, flushing filter assembly comprising a header assembly, a rotatable valve assembly, and a filter element assembly disposed within a filter housing assembly. In operation, the controller moves the turn knob of the rotatable valve assembly a one-qua... | 04/25/2006 |
| 6998046 | Filter system and methods of operating the same A filter system employing a modular filter and at least one high rate pre-treatment system for expeditiously and effectively filtering water. The modular filter includes a reservoir housing for containing fluid. A plurality of filter cells are disposed in the reserv... | 02/14/2006 |
| 6755970 | Back-flushable spiral wound filter and methods of making and using same A spiral wound membrane filtration element capable of being back-flushed has a permeate carrier sheet; a permeable membrane filter layer sheet adhesively bonded to the permeate carrier sheet, and a feed spacer sheet. The membrane filter layer sheet folds over the fe... | 06/29/2004 |
| 6662636 | Method of reducing fouling in filters for industrial water system analytical devices The invention is in a method of analyzing the water of an industrial water system wherein an analytical device is used to measure some parameter capable of being measured in the water of said industrial water system, the improvement involving using a wate... | 12/16/2003 |
| 6607660 | Liquid filtration device with backwashing feature A liquid filtration device having a backwashing feature in which liquid flow through the device is reversed with a plate being rotated under the filtration cartridges to allow reverse liquid flow into the individual filtration cartridges to produce the ba... | 08/19/2003 |
| 6524471 | Backwash control system for a filter unit used in a machine tool system A filter unit in a fluid circuit associated with a machine tool that uses machining fluid is maintained by counting the number of times the machine tool is operated and automatically servicing the filter unit, as by backflushing, after the machine tool ha... | 02/25/2003 |
| 6517711 | Waste treatment system An improved waste treatment system and improved waste treatment system components are provided. In a preferred form, a waste stream is initially separated into primarily solid and primarily liquid components, and the liquids are then fed to a filter assem... | 02/11/2003 |
| 6349835 | Water treatment installation The invention concerns a water treatment method and installation, which consist in subjecting the water to be treated to membrane filtration (1) to satisfy the requirement for a relatively high flowrate of water for ordinary use (UF), subjecting the water... | 02/26/2002 |
| 6197192 | Filter array with connector for successive backwash A filtration apparatus includes an array of filters arranged in parallel about a rotatable assembly 24 for successively backwashing each of the filter elements 19 within the array. The rotatable assembly includes a connector bachwash shoe 26 and a cage ha... | 03/06/2001 |
| 6187178 | Separator with solids diverter A separator includes a barrier 53 for retaining solid material thereon and an automatic mechanism for alternately preventing and allowing the flow of liquid to the separator outlet. When the flow is prevented, the liquid backs up through the barrier and w... | 02/13/2001 |
| 6139727 | Self-cleaning water filter A self-cleaning filter is provided for filtering particulate from a fluid flow stream such as water used in an irrigation system or the like, wherein a segmented filter element is backwashed or flushed clean in response to cyclic on-off supply of fluid. T... | 10/31/2000 |
| 6059967 | Distributor device for water conditioner backflush apparatus A water conditioner includes a tank, and an apparatus for backflushing a bed of particulate material in the tank, which includes a tubular casing, a vertical tube in the casing, a cap on the top end of the casing, suitable valves for causing the flow of p... | 05/09/2000 |
| 5853584 | Self-cleaning filter for filtering of liquids and gases A filter for filtering of a fluid, including a housing having an inlet port for the fluid to be filtered, an outlet port for filtered fluid and an outlet port for filtered fluid and an outlet port for rehect, In a body arranged in the housing to be rotata... | 12/29/1998 |
| 5792373 | Backwash filter system A backwash filter system includes a filter array comprising a plurality of filter units each having a housing, a filter element unit and a process liquid inlet port and a filtered liquid outlet port connected respectively with process liquid inlet and fil... | 08/11/1998 |
| 5779900 | In-situ cleanable filter with filtered cleanser A filter (102) for filtering fluid from a machine (104) includes a filter housing (106, 250) having a first inlet (114) receiving a first fluid from the machine, a first outlet (116) returning the first fluid to the machine, a second inlet (118) selective... | 07/14/1998 |
| 5744034 | Hydraulic circuit A hydraulic circuit includes a fluid pressure inlet line (1); a fluid pressure delivery line (2); and a filter unit (FU) interposed between the inlet line (1) and the delivery line (2), with the circuit incorporating an automatic back flushing facility. T... | 04/28/1998 |
| 5667683 | Backwashable liquid filter system using rotating spray A liquid-cleaning filtering system has at least one permanent filter assembly that is capable of being promptly backwashed thus minimizing the down time of machinery. Each filter assembly utilizes a wire mesh filter cartridge which is backwashed by a powe... | 09/16/1997 |
| 5584314 | Self-cleaning inlet head for a fluid The invention provides a self-cleaning inlet head for a fluid, operable in a first, draining, mode and in a second, backflushing, mode, including a body having a front end and a rear end; a piston slidably mounted in the body and having having a front fac... | 12/17/1996 |
| 5584992 | Pool water purification system The method of cleaning porous ceramic filters with a backwashing apparatus comprising an accelerating circulation path and a unit for mixing accelerated water with high-pressure air can be implemented with compact equipment to achieve efficient cleaning. ... | 12/17/1996 |
| 5575911 | Back-flushable filter having valved flusing pathway A filter operable in either a filtering mode or in a flushing mode, includes a cylindrical filter body, and a plurality of partitions defining a plurality of axially-extending, circumferentially-spaced filter compartments each communicating with an axial ... | 11/19/1996 |
| 5460715 | Apparatus for filtering plasma In a process for filtering plasma by separating blood into blood cells and plasma by a primary filter and filtering the separated plasma by a secondary filter to remove macromolecules from the plasma as harmful components, the loss of plasma to be discard... | 10/24/1995 |
| 5401397 | Filter system for a liquid stream with automatic rapid back flush capability A system for filtering a liquid stream, typically drinking water from a natural source. The system includes a plurality of filter stations, each of which receives at least a portion of the influent liquid flow, passes the flow through a filter and passes ... | 03/28/1995 |
| 5298161 | Apparatus for cleaning the working liquid of an EDM or ECM machine The apparatus includes at least one membrane filter (32) for filtering a machining liquid which has been contaminated by its use in electroerosive or electrochemical machining of workpieces. The apparatus also includes a device for cyclical cleaning of th... | 03/29/1994 |
| 5213687 | Apparatus for filtering mineral slurries An apparatus for filtering slurries of minerals or other fine particles is disclosed. The apparatus includes a ceramic filter plate and a fluid flow device for drawing a partial vacuum across said filter plate and to supply a pulsed liquid to the filtrate... | 05/25/1993 |
| 5137644 | Pipe connection system for multiple water treatment filters A backwash and ripening pipe connection system for a water treatment plant uses common pipelines to and from respective filters in the plant. The backwash/ripening pipeline to and from each filter has an associated valve and connects to one pipeline from ... | 08/11/1992 |
| 5034128 | Apparatus for dewatering pulp An apparatus for dewatering a pulp is described, comprising a vessel having a pulp chamber for pulp to be dewatered; a pulp inlet to the vessle; pulp outlet from the vessel; a filtrate chamber with an outlet for filtrate expelled from the pulp; a stationa... | 07/23/1991 |
| 4975189 | Cleaning sprays for disc filters In rotating disc filters used for example in the pulp and paper industry, one or more spray elements are positioned between adjacent discs to rotate about an axis parallel to the disc axis. This arrangement achieves greater washing coverage of the discs t... | 12/04/1990 |
| 4973404 | Micro/ultra filtration system A filtration apparatus characterized by efficiency of the precoating step and maintenance of filtration performance over a long period of time after precoating has been completed. The filter promotes parallel flow of porous precoat material along a porous... | 11/27/1990 |
| 4973406 | Device for the separation of particulated solids from a pressurized fluid A device for the separation of particulated solids from a pressurized fluid, in particular from a viscous mass of a thermoplastic material, with a cleaning system for the filtration element based on the "return pressure" principle. The device comprises a ... | 11/27/1990 |
| 4935136 | Disk filter A filter comprising a housing including an inlet coupled to a fluid inlet and an outlet coupled to a fluid outlet, and a filter assembly disposed inside the housing and arranged to intercept the flow of fluid from the fluid inlet to the fluid outlet, the ... | 06/19/1990 |
| 4871457 | Disk filter A filter comprising a housing including an inlet coupled to a fluid inlet and an outlet coupled to a fluid outlet, and a filter assembly disposed inside the housing and arranged to intercept the flow of fluid from the fluid inlet to the fluid outlet, the ... | 10/03/1989 |
| 4842751 | Method and apparatus for filtration using washable filter bag for water and wastewater treatment A method and an apparatus for removing filterable particles from water are disclosed. One or more filter bags made from a filter material suitable for filtering off the particles to be separated are disposed in a body of water with the bottom of the bag s... | 06/27/1989 |
