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| Number | Title | Issue Date |
| 6752920 | Integral valved filter A self cleaning filter includes a body (15), inlet (1), outlet (14), flush inlet (12) and waste outlet (2). Elements (7) provide filtration while compressed but are cleaned decompressed. Feed from inlet port (3), impa... | 06/22/2004 |
| 6726837 | Portable bilge water filter apparatus A casing having an inlet positioned below the bilge water discharge outlet of a boat or ship aligns a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse material restrictive to... | 04/27/2004 |
| 6712957 | Stationary bilge water filter apparatus A casing having an inlet which receives oil-based contaminated bilge water is mounted on a boat or ship in aligning a generally U-configured pipe vertically, in which first and second open ends of the pipe are overlaid with one of a gravel or charcoal coarse materia... | 03/30/2004 |
| 6656351 | Embolic protection devices one way porous membrane An embolic protection device for use in a blood vessel when an interventional procedure is being performed in a stenosed or occluded region to capture any embolic material which may be created and released into the bloodstream during the procedure. The de... | 12/02/2003 |
| 6641717 | Water purifier A water purifier 40 includes a flow meter 42 for measuring the cumulative flow of water through a water purification cartridge 6. The flow meter has an indicator portion 44 that rotates in response to increasing cumulative flow and a graduated portion 46 ... | 11/04/2003 |
| 6641718 | Aquarium filtering system An aquarium filtering system for gravity flow systems wherein a float valve is incorporated in the drain conduit from the aquarium, wherein the float valve is operated by the water level of filtered water within a sump, such that if the water level in the... | 11/04/2003 |
| 6623635 | Assembly for purifying water An ozone water purification system is disclosed. In this system, ozonated water flow proceeds alternately upwardly and downwardly through a series of vertical tubes. In order to disturb the laminar flow within the tubes, several types of turbulence-induci... | 09/23/2003 |
| 6620314 | Production of pyrogen controlled water A unit 1 for producing pyrogen controlled water on a small to medium factory scale comprises a number of charged ultrafiltration units 10 arranged in parallel. Orifice plates 15 are used to restrict and control the flow of deionized water to each filter 1... | 09/16/2003 |
| 6616835 | Coolant recycling system A coolant recycling system for efficiently recycling contaminated machine tool coolant thereby extending the useful life of the coolant. The coolant recycling system includes a support frame, a first tank for receiving contaminated coolant, a second tank ... | 09/09/2003 |
| 6616832 | Multi-layer recirculating filter wastewater treatment apparatus A wastewater treatment unit (10) including a recirculation chamber (32), a dosing chamber (34) having no direct fluid connection to the recirculation chamber (32), and at least two filter layers (28, 30) in a single tank (12). Each filter layer (28, 30) c... | 09/09/2003 |
| 6613236 | Water filter monitoring and indicating system A low cost method and apparatus for indicating when to replace a water filter in a water and ice delivery system for a refrigerator. The invention uses a low cost microprocessor and senses the operational condition of an ice maker water valve, a water dis... | 09/02/2003 |
| 6613221 | Sieve filter for fluid conduits, especially for hydraulic pressure lines in internal combustion engines A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for throu... | 09/02/2003 |
| 6613220 | Sieve filter for fluid conduits, especially for hydraulic pressure lines in internal combustion engines A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a... | 09/02/2003 |
| 6610198 | Liquid filter with change interval indicator A liquid filter (10) housing an annular filter element (16) has an annular space (24) between the filter element and the housing and viewable through the housing such that an operator can see the level of liquid in the annular space as an indication of wh... | 08/26/2003 |
| 6607659 | Drilling mud reclamation system with mass flow sensors A drilling mud clarification or reclamation system is provided. High gravity and low gravity solids are removed from the drilling mud in respective centrifugal separator stages. A plurality of in-line mass flow sensors are provided to provide real-time in... | 08/19/2003 |
| 6605210 | Hydraulic fluid filter device A filter device for filtering hydraulic fluid includes first and second subelements 40, 42 within a filter housing having separate inflows 20, 24 thereto for the respective subelements and a common outflow 22. The first subelement has a higher filter fine... | 08/12/2003 |
| 6604848 | Method for continuously mixing polyester resins In the case of thickening a feed resin without pre-drying, a device is taught to enhance the thickening effect. The device includes a chamber 4 having a mixing rotor therein for continuously mixing a resin between a feed port 2 and a discharge port 3. A p... | 08/12/2003 |
| 6605209 | Non-biodegradable waste pyrolysis system with selective residence-time reactor by recycle of self-sustaining heat-conservation medium A self-sustaining non-biodegradable waste breakdown system has a preprocessing assembly, a heating assembly, a reaction assembly and a filtering assembly. The reaction assembly has a filtering layer to retain long chain molecules of the melted waste for c... | 08/12/2003 |
| 6602408 | Filtration system for water garden reservoir A filtration system is described for a water garden having a reservoir 10. The reservoir includes a lid 14 and a tubular intake 26 connected to a water line 20 for receiving unfiltered water. The improvement includes a cup-shaped retainer 40 and one or mo... | 08/05/2003 |
| 6598617 | Cascaded variable bias feedforward and feedback flow and level control system A control system for maintaining the liquid levels in a plurality of reservoirs connected in series includes one or more nested control modules. The nested control module, one for each reservoir, includes a proportional only level controller in electrical... | 07/29/2003 |
| 6596158 | Waste water filtration tank A waste water filtration tank receives waste water under hydrostatic pressure. The tank collects solids using a filter screen. When the screen becomes clogged with collected solids, liquid is forced into a float chamber which contains a float. As waste wa... | 07/22/2003 |
| 6596159 | Automatic regeneration valve for water softener A regeneration valve 131 is adapted for automatic activation of ion exchange resin in a water softener. The regeneration valve includes a switching valve 1, a control valve 32, a water injection valve 54, a cam mechanism (FIG. 13) and a timer mechanism wh... | 07/22/2003 |
| 6592753 | Oil recovery system An oil recovery system, designed to recover oil from oil-contaminated water of a river, lake or sea due to a difference in specific gravity of the liquids. The system includes a 4-stage separation tank 15 having four chambers 51-54. The first chamber 51 i... | 07/15/2003 |
| 6592754 | Apparatus and process for removing metallic particles from effluent liquid waste An apparatus for separating solid particles from the suction effluent of, for example, a dental office, preferably driven by a dental office vacuum pump, includes a surge tank for accommodating effluent overfill connected to a sedimentary deposit tank for... | 07/15/2003 |
| 6585886 | Aerobic microbiological wastewater treatment reactor A wastewater treatment reactor includes an upper chamber 4 biomass therein and a lower chamber including a combination filtering/aerating unit 6 having a gas inlet 9 and a discharge outlet 10 for purified water. In operation, wastewater enters the upper r... | 07/01/2003 |
| 6585887 | End cap relief valve mechanism for a filter An oil filter includes a housing 14 having an end plate 20 attached to the open end thereof. The end plate 20 includes an outlet opening and inlet openings 22. An anti-drainback valve 49 is provided adjacent the end plate. A filter element having an end c... | 07/01/2003 |
| 6585893 | Concentrically-arranged, multi-sleeve bag-type filter element assembly A filter insert includes a plurality of annularly-shaped, bag-type filter sleeves (111, 112, 113) concentrically-arranged. The ends of the sleeves are attached to the flanges of an inlet plate 114, an annular terminal plate 124 or a circular terminal plat... | 07/01/2003 |
| 6585892 | Concentrically-arranged flexible media and support basket with second stage cartridge filter A concentric arrangement of bag-type filter sleeves 11, 12 of a filter insert are removably supported within a concentric arrangement of screens 60, 61 of an annularly-shaped basket 10a. The screens respectively support the filter sleeves against radial f... | 07/01/2003 |
| 6579445 | System for the production of laboratory grade ultrapure water There is disclosed a system capable of purifying water to a laboratory grade level that uses redox media, high energy catalytic activated carbon, ultraviolet radiation and high purity ion exchange media in series filtration. The system produces purified w... | 06/17/2003 |
| 6579449 | Carbonated water supply system In the carbonated water supply system 1, water supplied from the water supply 2 through the water supply conduit 3 is supplied to the carbonator 5 through the water supply valve 4 and high pressure strong carbonated water is produced in the carbonator 5 a... | 06/17/2003 |
| 6579447 | Self-cleaning pre-filter system A self-cleaning prefilter system generally includes a system inlet 11, a sediment filter 13 having a selectively openable drain port 18, a chemical injector 21, a pressure accumulator 28 having a upper chamber 31 in open fluid communication with the filte... | 06/17/2003 |
| 6576131 | Process and apparatus for changing the wetting agent of pigments The present invention relates to a process where a wetting agent of solids, such as pigments, is to be changed from a first (e.g. aqueous) agent of a lower affinity to the solids to a second (e.g. oily) agent of a higher affinity to the solids. Solids, e.... | 06/10/2003 |
| 6571960 | Faucet-mounted water filtration device A fluid filtering device has a housing with a mounting mechanism disposed at the forward end and on the top surface of the housing. A fluid inlet is defined through the housing top surface, and at least one fluid outlet is defined through the housing bott... | 06/03/2003 |
| 6572778 | Method for separating magnetized substances from a solution The method includes placing a vessel containing a solution having magnetized substances into a magnetic device. The solution is then incubated in the device for a period of time sufficient to allow the magnetized substances to migrate radially toward the ... | 06/03/2003 |
| 6569319 | UV light intensity detector in a water treatment system The present invention is directed to a light monitoring system used in a water treatment system. The monitoring system includes a light pipe and a light intensity detector. The light pipe is impregenated with a florescent dye that converts ultraviolet lig... | 05/27/2003 |
| 6565755 | Sludge density measurement for controlling a sludge treatment stage A process and apparatus therefore in which a sludge treatment stage 24 is controlled in response to the density or solids content of the sludge includes flowing sludge along a flow line 1 towards the treatment stage, taking a sample from the flow line 1, ... | 05/20/2003 |
| 6565743 | Portable purification container with cumulative use indicator A portable liquid filtration system includes a container 22 having a filtering assembly 30 therein and an arrangement for indicating the number of times that the cap has been fitted to the container in order to determine the remaining useful life of the f... | 05/20/2003 |
| 6551504 | Valve for a fluid treatment system A valve in a fluid treatment system adapted for controlling the flow of fluid between a source and a treatment media disposed in a treatment chamber. The valve includes a housing having a fluid passageway between an inlet and an outlet; a containment cham... | 04/22/2003 |
| 6544412 | Filter including temperature and pressure responsive bypass A thermal sensitive material 61 is disposed between a spring valve 60 and an end cap 50 of an oil filter (FIG. 1). Upon reaching a predetermined pressure, e.g. when the media of the oil filter becomes clogged, an opening 52 in the end cap opens to allow t... | 04/08/2003 |
| 6540909 | Fluid filter with pressure relief valve A fluid filter assembly having a relief valve for visually indicating [the life of] when a filter element may be replaced. The fluid filter assembly of the present invention provides a vertical, transparent housing having a fluid inlet for communicating a... | 04/01/2003 |
