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Class Information
Number: 137/115.21
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Pressure responsive > Plural sensors for single bypass or relief valve
Description: Subject matter comprising at least two pressure sensors for controlling either the bypass or relief valve.










Sub-classes under this class:

Class Number Class Name Patents
137/115.22 Sensors interconnected by timing or restrictive orifice 12


Patents under this class:

Patent Number Title Of Patent Date Issued
8496022 Device and method for supplying gas while dividing to chamber from gas supplying facility equipped with flow controller Jul. 30, 2013
7809954 Biometric control of equipment Oct. 5, 2010
7204266 Pilot-operated pressure shut-off valve Apr. 17, 2007
6289919 Pressure regulating valve with integral damping Sep. 18, 2001
6178998 Reverse flow prevention apparatus Jan. 30, 2001
6095184 Pressure regulator with integrated control valve, adjustable downstream pressure build and quick exhaust Aug. 1, 2000
6079436 Energy supply device for a compressed air brake system for commercial vehicles Jun. 27, 2000
6053195 Pressure control valve Apr. 25, 2000
5957148 Valve system having a deadman controlled actuating member in a vented chamber Sep. 28, 1999
5850844 Pressure reduction valve Dec. 22, 1998
5337778 Pressure control valve Aug. 16, 1994
4844114 Pressure-drop sensor valve Jul. 4, 1989
4840244 Automatic regulator valve assembly for vehicle power steering Jun. 20, 1989
4827966 Pressure equilibrator for gases May. 9, 1989
4825751 Controlled bypass and flow-control valve unit for hydraulic power steering system May. 2, 1989
4742841 Water shut-off valve May. 10, 1988
4625749 Pressure supply device for a hydraulic system Dec. 2, 1986
4559965 Multiple compensating unloading valve circuit Dec. 24, 1985
4552169 Device for regulating the pressure of a fluid supplied to a feeding circuit from a fluid source Nov. 12, 1985
4481968 Regulator-unloader for high pressure spraying equipment Nov. 13, 1984
4420010 In-line back flow preventer Dec. 13, 1983
4418535 Device for regulating the pressure of a fluid supplied to a feeding circuit from a fluid source Dec. 6, 1983
4403627 Buffer valve Sep. 13, 1983
4291612 Power brake system differential air pressure control valve assembly Sep. 29, 1981
4237918 Unloader and check valve Dec. 9, 1980
4228818 Crossover relief valve Oct. 21, 1980
4178953 Fail safe bypass valve Dec. 18, 1979
4139015 Hydraulic pressure control device for use in automatic transmission Feb. 13, 1979
4114637 Variable differential pressure unloading valve apparatus Sep. 19, 1978
4062374 Hydraulic valves and hydraulic systems Dec. 13, 1977
4040439 Cushion valve arrangement Aug. 9, 1977
4016898 Means for suppressing cavitation in a high pressure relief valve Apr. 12, 1977
4007756 Air control apparatus for an engine exhaust gas purification system Feb. 15, 1977











 
 
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