Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7364654 | In-home water treatment system A method and apparatus are provided for a water treatment system that includes both filtration and ultraviolet disinfection elements in a single unit. Various embodiments include a complete treatment system having replaceable filter elements or granular filter media... | 04/29/2008 |
| 7351330 | Iron and hydrogen sulfide removal apparatus An automated system controls operation of a filtration system. The filtration system includes an aeration tank and a filtration tank. The system includes a pressure sensor, an air pump, a bleed passage, and a pressure control. The pressure sensor measures a pressure... | 04/01/2008 |
| 7341662 | Distribution and collection headers for a filter bed A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to i... | 03/11/2008 |
| 7332080 | Apparatus for salt free water softening A water softening system and process for softening water on an as needed basis is disclosed. The system and process softens water without the addition of a substitute metal exchange cation. ... | 02/19/2008 |
| 7303683 | Microorganism-removing filter medium having high isoelectric material and low melt index binder A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo... | 12/04/2007 |
| 7300569 | Water treatment system A water treatment system which includes a control valve with a venturi for drawing air into a tank. The passage of untreated water into the control valve draws air into a tank for oxidation of the water. The flow of the air into the tank is independent of the flow o... | 11/27/2007 |
| 7297256 | Pressure gradient dosing system for fluid supply A pressure gradient dosing system is provided for a fluid supply system. A flow passage has first and second pressure zones having a pressure gradient therebetween. An additive reservoir in an additive delivery system responds to the pressure gradient to release add... | 11/20/2007 |
| 7293660 | Filter assembly having a five-way valve A filter device includes four couplers attached to four sides, and a casing attached to bottom. A filtering material receptacle may be attached to the casing for filtering the water. A valve member is rotatably received in the housing, and includes six openings and ... | 11/13/2007 |
| 7261127 | Modified push-pull valve for filter systems and method A valve assembly is constructed for use in a filtering system including a pump and a filter with an inlet and an outlet, for example those systems used in conjunction with swimming pools. The assembly includes a valve body with a pump inlet, a filtered output, a was... | 08/28/2007 |
| 7217360 | Multi column chromatography system The present invention relates to a method and apparatus for chromatographically analyzing each of a plurality of samples in detector, comprising an autosampler to contain a plurality of samples for chromatographic analysis and a plurality of chromatographic systems,... | 05/15/2007 |
| 7156995 | Aeration tank control valve system Mineral contaminants are removed from water in a system in which water is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve operates to allows air from a compressor to flow into the top of the tan... | 01/02/2007 |
| 7081200 | Swimming pool filter The invention relates to a swimming pool filter that includes a filter body (1) being formed by a casing (2) with a top cover (3), and the cover (3) forms a water distributor (4), this latter being compartmented (6, 7, 8, 9 ... | 07/25/2006 |
| 7040840 | Sewage effluent distribution means Effluent-operated valves provide, in a septic system, distribution of effluent uniformly to a plurality of portions or fingers of a drain field. The installation of such valves in a tank that collects septic system effluent to be distributed to a plurality of finger... | 05/09/2006 |
| 7018540 | Multi column chromatography system The present invention relates to a method and apparatus for chromatographically analyzing each of a plurality of samples in detector, comprising an autosampler to contain a plurality of samples for chromatographic analysis and a plurality of chromatographic systems,... | 03/28/2006 |
| 7000782 | 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... | 02/21/2006 |
| 6958118 | Self-cleaning water filtration system and method A self-cleaning water filtration system includes a pre-filter to filter oils and relatively medium sized particles in a water flow, a multi-stage filter to purify and provide a second level of filtration to the water flow, and a self-cleaning filter to provide a thi... | 10/25/2005 |
| 6878293 | Automatic valve assembly for water circulation systems A filtration and backwash system for a water source such as a swimming pool is provided including a fluid source, a pump, a filter and a specially designed five-port valve which is easily adaptable for automatic use in the filtration mode and in the backwash mode. T... | 04/12/2005 |
| 6787042 | Automated radionuclide separation system and method A gas-free system for separating a solution of substantially impurity-free daughter products from an associated parent load solution includes a pump, a plurality of multi-port valves, separation medium and a processor. An uncoiled conduit extends between a third por... | 09/07/2004 |
| 6776913 | Water softening method and apparatus for use therewith The present invention generally relates to the removal of certain salts, such as those of calcium or magnesium, from water. More particularly, the present invention is directed to a method for efficiently softening water containing certain ions in a manner which lim... | 08/17/2004 |
| 6709574 | Fish pond filter system A system for filtering and treating waste generated or collected in the water of a fish pond. The system includes a pump, pre-filter, piping, a valve assembly, and a filter media container enclosing a plurality of discrete filter media. The filter media are generall... | 03/23/2004 |
| 6644349 | In-tank water conditioner valve A water conditioner valve configured for use with a tank in a water conditioning system, including a main housing a working portion disposed within the main housing and further including at least one valve chamber, and at least a portion of the working po... | 11/11/2003 |
| 6627070 | Apparatus for aeration in a water filter system The present invention provides an apparatus and method for aeration in a filter system. The present invention provides an air injection adaptor for coupling between a filter tank and a valve controller. The air injector adaptor includes an unfiltered wate... | 09/30/2003 |
| 6447678 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 09/10/2002 |
| 6413423 | Liquid treatment apparatus with backwash flow control valve Apparatus for treating water utilizes a single flow control valve that has only one moving part to divert treated water from several water treatment units to backwash another water treatment unit.... | 07/02/2002 |
| 6398954 | Multimedia backwashable filtration system A multimedia fluid treatment unit and rotatable valve are disclosed in which a plurality of discreet containers are removably stacked upon each other and contain various different and distinct water treating media. The rotatable valve is rotatable between... | 06/04/2002 |
| 6293298 | Water softener valve A water softener valve for controlling water flow to and from a water softener is disclosed that includes a cylindrical shaft extending from said inner surface of a piston chamber that fits into a pressure relief port when the piston is in the service pos... | 09/25/2001 |
| 6254772 | Backwashable filtration system A multimedia fluid treatment unit and rotatable valve are disclosed in which a plurality of discreet containers are removably stacked upon each other and contain various different and distinct water treating media. The rotatable valve is rotatable between... | 07/03/2001 |
| 6245233 | Water filtering apparatus with water flow switch valve device A water filtering apparatus with water flow switch valve device includes a water container filled with filtering materials and a switch valve device. The switch valve device includes a valve seat, a split valve, a control rod, and a valve cover. The valve... | 06/12/2001 |
| 6238556 | Filtration system including a back washable pre-filtration apparatus A filtration system for filtering particulate matter from a liquid, the filtration system comprises a pre-filtration apparatus and a main filtration apparatus. The pre-filtration apparatus comprises a vessel having a fluid inlet, a fluid outlet, and a bac... | 05/29/2001 |
| 6231763 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 05/15/2001 |
| 6103108 | Water treatment apparatus A water treatment apparatus provides treatment of water to remove, for example, hydrogen sulfide and iron, dissolved or dispersed in ground water. The system is provided with water from a conventional well and pump and includes a venturi-type aerating dev... | 08/15/2000 |
| 6056873 | Management of a body of water The installation disclosed comprises a body of water, a pump, a filter and pipes connecting the body of water, pump and filter. Additional pipes lead from the pipe to the return pipe and to waste. Solenoid operated valves are provided in the pipes so that... | 05/02/2000 |
| 6042729 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 03/28/2000 |
| 6001262 | Cascade ion exchange for high purity water production A method and system for treating and purifying water on site provides a cascade series of alternating cation and anion beds with flow control controlling flow of water in a first direction to flow through all beds in sequence, to purify the water, and con... | 12/14/1999 |
| 5937903 | High performance diverter valve A diverter valve having a valve body with five ports. A valve assembly is disposed in the valve body and is rotatable between first and second positions. When the valve assembly is in the first position, fluid flows between aligned first and second ports ... | 08/17/1999 |
| 5891332 | Magnetic filtration apparatus for purifying water A method is provided for purifying raw water taken from a raw water reservoir. The method includes the steps of subjecting the raw water to magnetic treatment, causing the magnetically treated water to flow through a filter medium in a first direction for... | 04/06/1999 |
| 5879559 | Valve controller for water conditioning system A control unit for operating a valve system in a water conditioner system includes a drive motor having an output shaft coupled to the valve system, a valve position slide switch, an electronic regeneration controller, and a settable mechanical clock. The... | 03/09/1999 |
| 5858219 | Cooling tower water treatment system A cooling tower water treatment system removes contaminants include chlorine, calcium carbonate as calcite, and microorganisms from water in the system with redox media in a fluidized bed. The treatment system includes a treatment bed, in the form of a co... | 01/12/1999 |
| 5779771 | Rotating flow distributor assembly for use in continuously distributing decontamination and regeneration fluid flow The rotating flow distributor assembly comprises a connected pair of cylindrical housings, with an inlet port and an outlet port, that receive and discharge the flow of fluid undergoing decontamination. The fluid passes into flow distribution chambers loc... | 07/14/1998 |
| 5744040 | Apparatus and method for removing dissolved hydrogen sulfide from water An apparatus for removing dissolved hydrogen sulfide from water including an atomizing tank defining an open end. A manifold is positioned adjacent the open end. The manifold defines an inlet channel having a first inlet port and a second inlet port. The ... | 04/28/1998 |
