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Class Information
Number: 137/116.3
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Pressure responsive > With pressure reducing inlet valve
Description: Devices with a correlated fluid pressure responsive regulator or pressure reducing valve controlling the inlet branch.










Sub-classes under this class:

Class Number Class Name Patents
137/116.5 Relief port through common sensing means 108


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8408352 Energy efficient power steering pump control system Apr. 2, 2013
8408482 Sprinkler with pressure regulation Apr. 2, 2013
8336571 Overpressure shutoff and relief valve assembly Dec. 25, 2012
7757703 Device for regulating pressure Jul. 20, 2010
7556478 Compressor control apparatus Jul. 7, 2009
7524311 Automatic high negative pressure relief valve and chest drainage units using same Apr. 28, 2009
7334598 Pressure regulator adaptable to compressed gas cartridge Feb. 26, 2008
7278402 Device for conveying fuel out of a tank and to a combustion engine Oct. 9, 2007
6948519 Device for regulating the flow of gas toward user equipment Sep. 27, 2005
6932102 Device for regulating the flow rate and/or the pressure of a fluid Aug. 23, 2005
6843266 Regulator with erosion resistant seal assemblies Jan. 18, 2005
6770062 Automatic high negative pressure relief valve and chest drainage units using same Aug. 3, 2004
6758234 Pressure reducing valve Jul. 6, 2004
6694998 Micromachined structure usable in pressure regulating microvalve and proportional microvalve Feb. 24, 2004
6595231 Device and method for regulating the pressure of a gas stream Jul. 22, 2003
6584999 Fluid pressure controller Jul. 1, 2003
6568418 Precision regulator May. 27, 2003
6481454 Regulator with segmented body Nov. 19, 2002
6244410 Starting control to control a hydraulic piston /cylinder unit Jun. 12, 2001
6095177 Precontrolled 3-way pressure control valve Aug. 1, 2000
5857479 Precontrolled three-way pressure reduction valve Jan. 12, 1999
5705070 Micromachined filters Jan. 6, 1998
5522531 Safety device for nailing machine Jun. 4, 1996
5499650 Fluid control valve for a hydraulic system operating with variable viscosity, contaminated, fluid Mar. 19, 1996
5460198 Pressure-activated flow-control valve Oct. 24, 1995
5329841 Piston-slide-valve Jul. 19, 1994
5327926 Flow regulator Jul. 12, 1994
5259474 Steering force control apparatus for power steering system Nov. 9, 1993
5255701 Hydraulic pressure regulator Oct. 26, 1993
5247959 Multi-function valve Sep. 28, 1993
5188197 Central-lubrication assembly Feb. 23, 1993
5188015 Automatically sequenced hydraulic cylinder mechanism Feb. 23, 1993
5154203 Proportional modulator for an electropneumatic braking system Oct. 13, 1992
4986738 Airflow control system pump and housing Jan. 22, 1991
4943032 Integrated, microminiature electric to fluidic valve and pressure/flow regulator Jul. 24, 1990
4928723 Capacity control valve for a compressor May. 29, 1990
4917140 Pressure regulator valve Apr. 17, 1990
4872472 Fluid pressure regulating valve Oct. 10, 1989
4838298 Hydraulic latch device Jun. 13, 1989
4836089 Series spool pressure regulator arrangement for a double-acting hydraulic actuator Jun. 6, 1989
4819695 Pressure servo regulator Apr. 11, 1989
4796652 Pressure regulator for hydraulically controlled machine tools Jan. 10, 1989
4765385 Tire inflation-deflation system Aug. 23, 1988
4747425 3-way pressure reducing valve having means for monitoring the secondary pressure May. 31, 1988
4732077 Air spring Mar. 22, 1988
4682621 Modulator valve Jul. 28, 1987
4667693 Pressure-reducing apparatus May. 26, 1987
4657041 Oil pressure control apparatus Apr. 14, 1987
4651766 Vacuum limiting arrangement Mar. 24, 1987
4633761 Air spring Jan. 6, 1987

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