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Class Information
Number: 137/115.05
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 > Including controlling main line flow > Relief or bypass closes as main opens
Description: Subject matter wherein the sensor, in response to the change in the flow rate, is simultaneously opening a main line valve and closing a relief valve in a branch line or vice versa.










Patents under this class:

Patent Number Title Of Patent Date Issued
8517148 Lubrication system with tolerance for reduced gravity Aug. 27, 2013
8215330 Adjustable recirculating valve Jul. 10, 2012
7243672 Flow control valve Jul. 17, 2007
7216662 Flow control apparatus May. 15, 2007
7063100 Flow regulator with pressure relief combination valve Jun. 20, 2006
6966365 Outflow prevention device Nov. 22, 2005
6966329 Proportional pilot-operated flow control valve Nov. 22, 2005
6874503 Fluid flow regulation system Apr. 5, 2005
6679949 Method and device to allow a rigid pig to pass into a flow pipe which requires the use of a hollow flow-constricting device Jan. 20, 2004
6675110 Testing valve assemblies Jan. 6, 2004
6607043 Down hole motors and methods for their operation Aug. 19, 2003
6595233 Safety device for a fluid transmission Jul. 22, 2003
6334458 By-pass valve in particular for pressure-washing machines Jan. 1, 2002
6058962 Flow rate regulating valve of hydraulic pump May. 9, 2000
6041807 Flow control device of power steering apparatus Mar. 28, 2000
5832949 Control valve Nov. 10, 1998
5775360 Pressure control valve Jul. 7, 1998
5718255 Flow-responsive diverting valve Feb. 17, 1998
5172716 Recirculation valve Dec. 22, 1992
4967783 Recirculation valve with pilot valve Nov. 6, 1990
4941502 Low pressure recirculation valve Jul. 17, 1990
4779639 Automatic recirculation valve Oct. 25, 1988
4638831 Valve arrangement for unloading liquid flow at a non-return valve Jan. 27, 1987
4570667 Demand responsive flow regulator valve Feb. 18, 1986
4442857 Flow control valve Apr. 17, 1984
4418710 Pilot control valve for load sensing hydraulic system Dec. 6, 1983
4385640 Hydraulic unloader May. 31, 1983
4311161 Valve system in power steering systems Jan. 19, 1982
4265268 Modulating flow control valve assembly May. 5, 1981
4265267 Flow control device for use with positive displacement pump May. 5, 1981
4244389 Flow control valve Jan. 13, 1981
4243064 Bypass valve for pumps, heating systems and the like Jan. 6, 1981
4121610 Electrically operated proportional flow control hydraulic valve and manually operable remote control device therefor Oct. 24, 1978











 
 
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