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Class Information
Number: 137/115.07
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Flow rate responsive > Pilot valve operated
Description: Subject matter comprising an auxiliary valve control and wherein the bypass or relief valve is controlled by the auxiliary control valve in response to the variation of the flow rate in the main line.










Patents under this class:

Patent Number Title Of Patent Date Issued
8297297 Compressed air supply system for a commercial vehicle and method for operating a compressed air supply system Oct. 30, 2012
7918315 Differential transmission with cleaning feature Apr. 5, 2011
7216662 Flow control apparatus May. 15, 2007
7178545 Modulating bypass control system and method Feb. 20, 2007
6176251 Valve assembly in particular for a pressure washer Jan. 23, 2001
6170508 Fluid flow regulating valve and method Jan. 9, 2001
6135135 Force balanced proportional bypass valve Oct. 24, 2000
6058962 Flow rate regulating valve of hydraulic pump May. 9, 2000
6041807 Flow control device of power steering apparatus Mar. 28, 2000
RE36022 Servo control for hydraulic elevator Jan. 5, 1999
5797418 Differential pressure detector with reduced reaction forces Aug. 25, 1998
5669405 Apparatus and method for automatically disabling pressure relief valve of backflow preventer Sep. 23, 1997
5593004 Servo control for hydraulic elevator Jan. 14, 1997
4967783 Recirculation valve with pilot valve Nov. 6, 1990
4510963 Proportional-flow electrohydraulic control Apr. 16, 1985
4411289 Hydraulic valve Oct. 25, 1983
4396033 Flow volume control device for a power assisted steering device Aug. 2, 1983
4365645 Three-way flow-regulating valve Dec. 28, 1982
4361166 Flow controlling apparatus for power steering, operating fluid Nov. 30, 1982
4355655 Hydraulic control apparatus for load independent flow regulation Oct. 26, 1982
4346727 Apparatus for measuring the amount of fluid supplied by a fluid supply device Aug. 31, 1982
4343324 Flow control valve Aug. 10, 1982
4327763 Dual control input flow control valve May. 4, 1982
4286615 Apparatus for measuring the amount of fluid supplied by a fluid supply device Sep. 1, 1981
4253482 Hydraulic valve having pressure compensated demand flow Mar. 3, 1981
4249556 Isolating and backflow preventing valve assembly Feb. 10, 1981
4207915 Back flow preventer Jun. 17, 1980
4121610 Electrically operated proportional flow control hydraulic valve and manually operable remote control device therefor Oct. 24, 1978
4117857 Fuel control system for a prime mover Oct. 3, 1978
4036245 Pressure compensated hydraulic control valve Jul. 19, 1977
3951162 Control valve with flow control means Apr. 20, 1976
3942548 Fluid control valve Mar. 9, 1976











 
 
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