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| Number | Title | Issue Date |
| 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 |
| 7360611 | Flow system for a hydraulic choke solids strainer A strainer system having two separate strainers positioned in parallel, where one strainer can be cleaned while still permitting normal flow through the other strainer. The system flow circuit is arranged so that a high pressure backwashing flow can be applied to on... | 04/22/2008 |
| 7326334 | End-of-faucet filter Various embodiments of an end-of-faucet filter assembly connectable with a faucet on a standard sink and having a plurality of outlets corresponding with selectable modes of operation are disclosed herein. One mode of operation provides unfiltered, aerated water dis... | 02/05/2008 |
| 7275606 | Solids strainer system for a hydraulic choke The invention contemplates a strainer based upon a four-way, two-position rotary cylindrical plug valve having a hollow plug. The normal entry port for the sealing plug of the plug valve is a circular radial hole passing from the exterior of the plug into the interi... | 10/02/2007 |
| 7235176 | Shower head with water purification function A shower head for purifying water includes a filter cartridge positioned within in a holding part, a purified water flow path passing through a purification material and a raw water flow path not passing through the purification material. A flow path switching valve... | 06/26/2007 |
| 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 |
| 7025879 | Rainwater collection apparatus and pumping system A rainwater collection apparatus stores rainwater until required, and includes at least one outlet for exporting rainwater. The outlet or outlets include ball-valve assemblies and levers for opening and closing the outlets, and couplers for attachment to a garden ho... | 04/11/2006 |
| 7021671 | Septic tank drain field pipe manifold system and method of use A manifold having a tubular body including effluent retention areas formed within the body and conduit portions having opposing ribs extending radially from an outside surface for use with a pipe anchoring mechanism when installing the manifold and connected flexibl... | 04/04/2006 |
| 6797156 | Faucet water treatment A water treatment unit is disclosed which can be mounted directly on the faucet or tap of the user's sink and which contains one or more water treatment media and an operating valve which permits the selection of several operating modes including service, spray and ... | 09/28/2004 |
| 6575308 | Filtration system suitable for microfiltration, ultrafiltration or reverse osmosis The invention relates to a filtration system. The filtration system comprises a filter unit having a housing enclosing a filter element. The unit has an inlet into the housing upstream of the filter element. The unit also has a retentate outlet from the h... | 06/10/2003 |
| 6517722 | Self cleaning fuel oil strainer A self-cleaning fuel oil strainer, coupled to a continuous fuel flow, that includes a pair of canisters, each having a cylindrical wedge wire fuel oil filter screen. An elongated brush running the length of the screen is disposed between two confining wal... | 02/11/2003 |
| 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 |
| 6457589 | Fluid filtration and dispensing system The present invention provides a fluid dispenser. The flow of either filter or unfiltered fluid may be selected by positioning an actuator that also contains the filter. Selection is accomplished by positioning the actuator within two planes that are not ... | 10/01/2002 |
| 6383385 | Filter unit for the physical elimination of microbes, suspended matter and solids from water The invention relates to a filter device for the physical elimination of microbes, suspended matter and solids from water, which in a housing has a filter insert made of 200 to 10000 hollow-fiber membranes with a defined pore width between 0.001 and 1.0 Î... | 05/07/2002 |
| 6368503 | Filtered fluid dispensing system The present invention provides a filtered fluid dispensing system. The invention may replace the sprayer provided with the faucet assembly of a conventional sink and may, in certain embodiments, be adapted to selectively dispense filtered and unfiltered f... | 04/09/2002 |
| 6231770 | Multiple element filter and method of using therefor A biological fluid filter assembly (100) including a plurality of porous media (6a, 6b) and essentially lacking a solid partition between the media is disclosed. Preferably, the assembly has a space (12) between the media (6a, 6b). The filter assembly is ... | 05/15/2001 |
| 5985096 | Vertical pulping digester having substantially constant diameter In a vertical digester for producing chemical pulp, or other vessel for treating a slurry of comminuted fibrous cellulosic material, the cost of manufacturing the shell is significantly reduced by eliminating the external step increases in the digester sh... | 11/16/1999 |
| 5922210 | Tangential flow planar microfabricated fluid filter and method of using thereof A microfilter utilizing the principles of tangential flow to prevent clogging, and sloped channel sides to overcome surface tension effects is provided which has feed inlet and exit connected by a feed flow channel, a barrier channel parallel to the feed ... | 07/13/1999 |
| 5914042 | Device and method for separating plasma from a blood product Plasma is separated from a blood product such as SAG-M or anticoagulated whole blood by flowing the blood product across a membrane. The membrane has a voids volume of greater than 50%, a pore size of less then 0.65 μm and a plasma flow rate of greater t... | 06/22/1999 |
| 5823229 | Faucet having multiple water discharges A faucet having multiple water discharges includes a housing, an input water connection for the housing, a stream discharge on the housing, a spray discharge on the housing, a filtered water discharge on the housing, a water filter within the housing, and... | 10/20/1998 |
| 5744033 | Water filter for use with a faucet A water filter cartridge for use with a water faucet includes a cover and a filter element located within the cover. The cover has a single unfiltered water input connection and a pair of water output connections, one for filtered water and one for unfilt... | 04/28/1998 |
| 5705065 | Sea water strainer A sea water strainer for use with marine craft includes a reservoir forming member disposed intermediate two ends portions. The end portions are formed with inlet and outlet fluid channels which are selectively accessible and blockable to direct the flow ... | 01/06/1998 |
| 5579790 | Filter screen with backflush A filter screen assembly is provided which includes a housing, a filter screen, and two valve or check balls. The housing has two interior walls, each having openings therein which divide an interior space of the housing into top, center, and bottom chamb... | 12/03/1996 |
| 5470437 | Digester for cooking pulp having staggered screens In a pulp digester for continuous cooking under raised pressure and temperature of fiber material in a vertical digester (1), input of fiber material and cooking liquid takes place at the top of the digester, withdrawal of spent cooking liquor is carried ... | 11/28/1995 |
| 5464537 | Filtering debris from molten plastic A filter for removing debris from a flow of molten plastic includes a cartridge containing a screen and a holder which seats one face of the cartridge. The flow of molten plastic is directed at an acute angle through the screen producing a filtered plasti... | 11/07/1995 |
| 5342520 | Filter for a rockdrill A filter having a filter element is provided for a rockdrill. The filter can be operated in three modes, namely, filtering or drilling, rinsing and back-flushing. As the filter element becomes clogged a handle on the filter can be turned to a back-flushin... | 08/30/1994 |
| 5298162 | Multi-stage fluid filter A multi-stage fluid filter filters entrained particulate matter from a moving fluid stream at substantially constant fluid pressure and filtration efficiency during continuous on-line operation. The filter includes a housing having a fluid inlet and a flu... | 03/29/1994 |
| 5223151 | Device for the collection and evaluation of the embryo in the bovine and other animal species A method and device for collecting and evaluating an embryo contained in a fluid medium. The fluid containing the embryo is discharged into a receptacle and sequentially drained and filtered until the remaining fluid containing the embryo is located in th... | 06/29/1993 |
| 5196112 | Oil drain apparatus An oil drain apparatus is directed into an oil filter boss in an operative association with a valve to permit selective flow of oil from the valve directed from the oil filter boss. The invention is directed to further include a flexible hose positioned i... | 03/23/1993 |
| 5164082 | Water filter having lever controlled plunger A water filter comprising a hollow cylindrical base, a filter assembly fastened in said base at the top which is comprised of an inner filter tube covered with a braided outer filter tube, a cylindrical casing covered on said filter assembly and attached ... | 11/17/1992 |
| 5114583 | Filter unit with high volumetric efficiency and reduced filtering surface The filter unit is of the type comprising a casing (2), filter tubes (5) associated with a filtering surface (6), shaker means (7) for the filtering surface (6), a suction pipe (10) associated with the casing and a suction pipe (11) associated with one or... | 05/19/1992 |
| 5053123 | Adjustable valve for varying filtrate composition from filters Disclosed is an adjustable valve for use with filters wherein internal valve partition members effect the relative duration and timing of withdrawal of the atmospheric and vacuum portion of filtrate from the filter. The valve further provides for the dist... | 10/01/1991 |
| 4941971 | Apparatus for mounting in an aqueous system, a cartridge filter for filtering the system and in place cleaning the filter A horizontally mounted cylindrical container is adapted to mount through demountable end plates a cartridge filter in the container through demountable end plates for rotation around a lower axis than the center axis of the container. The combination of c... | 07/17/1990 |
| 4839039 | Automatic flow-control device An add-on device (10) for converting a conventional manual faucet to an automatic faucet includes a body (12) that includes an adapter (14) by which the add-on device is mounted onto the outlet of the manual faucet. A conduit (32) provides a fluid path fr... | 06/13/1989 |
| 4832841 | Liquid treatment apparatus A liquid treatment apparatus suitable for dewatering a radioactive sludge includes a cylindrical housing (14) open at one end and defining two ports (24, 26) for the sludge, one near the open end and the other at the closed end. A plug (30) locates in the... | 05/23/1989 |
| 4806242 | Self-cleaning filter A filter without moving parts comprises a filter body adapted to be fitted in the flow direction into a conduit conveying a fluid to be filtered. A filter screen has a frustoconical outer filter wall with at least part of its larger diameter end inside th... | 02/21/1989 |
| 4806243 | Self-cleaning filter and steam condenser inlet water box comprising same A filter comprises a screen having a substantially conical inner wall disposed axially at its center. There is a collection space at the larger diameter end of this inner wall. A frustoconical outer wall surrounds the inner wall and has its smaller diamet... | 02/21/1989 |
| 4770768 | Water filter apparatus and aerator assembly A water filter has an elongated base with an inlet opening near one end thereof to which is secured an adaptor ring for attachment to a water faucet. A first outlet opening on the base dispenses unfiltered water and there is a channel defined within the b... | 09/13/1988 |
| 4734269 | Venous reservoir bag with integral high-efficiency bubble removal system A liquid-gas bubble separator comrising a container having an inlet for a fluid which includes liquid and gas bubbles, an outlet and upstream and downstream vents. A filter element is provided in the container between the inlet and the outlet. The filter ... | 03/29/1988 |
| 4714552 | In-line fluid filtering devices and disc-filters useful in such devices A filter device is disclosed, comprising two compartments within a housing. The first compartment includes a filter element, of the screen or the disc types, with communication to the filtered fluid outlet of the housing. A controllable valve communicates... | 12/22/1987 |
