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Class Information
Number: 210/131
Name: Liquid purification or separation > Flow, fluid pressure or material level, responsive > Fluid pressure responsive by-pass > By movement of separation medium
Description: Apparatus in which the responsive means is a separating element or filter medium which provides a bypass by flexing or compression thereof or by movement in its entirety.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8679334 Power steering filter assembly Mar. 25, 2014
8640881 Screen changer Feb. 4, 2014
8449767 Oil reservoir comprising an oil filter May. 28, 2013
8277645 Automatic retractable screen system for storm drain inlets Oct. 2, 2012
8226824 Anti-clogging drainage inlet Jul. 24, 2012
8051660 Charging device Nov. 8, 2011
7951291 Automatic fluid channel screen lock-unlock system May. 31, 2011
7820040 Water pollution trap and methods of use thereof Oct. 26, 2010
7704384 Self dislodging filter element Apr. 27, 2010
7699978 Trash screen for side entry pit Apr. 20, 2010
7695615 Filtering device Apr. 13, 2010
7569087 Filter element provided with channels of variable dimensions and arrangement Aug. 4, 2009
7491338 Apparatus and method for blocking and controlling the release of solid materials into or through a fluid-flow channel Feb. 17, 2009
7384547 Replaceable filter element with integral annular trap Jun. 10, 2008
7238279 Impulse-responsive rotary actuator for storm drain barrier not disabled by immersion Jul. 3, 2007
7234894 Storm drain basin gate system Jun. 26, 2007
7011743 Water pollution trap with water flow baffles Mar. 14, 2006
6994783 Water pollution trap with inlet basket Feb. 7, 2006
6955756 Storm drain movable baffle Oct. 18, 2005
6951607 Mobile pollution trap and method Oct. 4, 2005
6939461 Water pollution trap with oil segregator/collector Sep. 6, 2005
6936163 Water pollution trap with clay collector Aug. 30, 2005
6869523 Curbside drain barrier for detaining solid trash during no or slow water flow Mar. 22, 2005
6824677 Curbside trap for pollutants and solid trash Nov. 30, 2004
6803022 Device and method for separating components of a fluid sample Oct. 12, 2004
6797161 Multi-stage water pollution trap Sep. 28, 2004
6733665 Storm drain system for preventing and filtering debris, trash and hydrocarbons with removable inserts May. 11, 2004
6685829 Fluid filter with a discharge dome that is fixed to the housing Feb. 3, 2004
6613221 Sieve filter for fluid conduits, especially for hydraulic pressure lines in internal combustion engines Sep. 2, 2003
6478954 Debris collecting apparatus Nov. 12, 2002
6475380 Hydraulic oil reservoir Nov. 5, 2002
6423215 Fluid filter unit with automatic clogged filter element bypass and ferrous indicator flag Jul. 23, 2002
6270660 Flow inverter for filters Aug. 7, 2001
6224753 Water catchment device floating at the surface of a basin and supplying a pumping system May. 1, 2001
6217756 Drain grate responsive to high flow rates of water Apr. 17, 2001
6165354 Filter having a filter element adjustable to a bypass position Dec. 26, 2000
6165355 Fluid filter having a three way valve construction Dec. 26, 2000
6015489 Plastic self-relieving curb inlet filter Jan. 18, 2000
5830349 Flow inverter for filters Nov. 3, 1998
5748694 Fuel bundle filter for a nuclear reactor fuel bundle assembly May. 5, 1998
5733443 Inside to outside flow filters Mar. 31, 1998
5584314 Self-cleaning inlet head for a fluid Dec. 17, 1996
5296134 Filtration structure for fluid flow radially through cylindrical configuration defined by stack of serrated wafers Mar. 22, 1994
5281331 Radiator fluid filter Jan. 25, 1994
5174892 Permanent fuel filter Dec. 29, 1992
4961846 Collapsible filter for a fluid power apparatus Oct. 9, 1990
4935129 Closure device for a scupper drain Jun. 19, 1990
4834873 Combined reverse osmosis unit and water inflow control valve for a water purification system May. 30, 1989
4774730 Toilet bowl splash-proof device Oct. 4, 1988
4743365 Valve filter mechanism May. 10, 1988

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