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Class Information
Number: 137/115.18
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Pressure responsive > Bypass or relief valve responsive to pressure downstream of outlet valve
Description: Subject matter wherein the outlet branch includes a valve which is located before the bypass or relief valve and the bypass or relief valve is controlled by the fluid pressure between the outlet valve and the bypass or relief valve.










Sub-classes under this class:

Class Number Class Name Patents
137/115.2 Outlet valve carried by bypass or relief valve 5
137/115.19 Pilot valve 18


Patents under this class:

Patent Number Title Of Patent Date Issued
8578967 Pressure regulating valve for aircraft engine Nov. 12, 2013
8517021 Vacuum demand valve Aug. 27, 2013
8499549 Exhaust gas control system and exhaust gas control method Aug. 6, 2013
8118080 Control valve body of automatic transmission and manufacturing method therefor Feb. 21, 2012
8096316 Valve systems for use with a fluid injector system Jan. 17, 2012
7726329 Discharge rate and pressure control solenoid valve Jun. 1, 2010
7146998 Hydraulic valve Dec. 12, 2006
6705339 Surge check unit for a liquid distribution system Mar. 16, 2004
6273686 Apparatus and method for controlling a rated system pressure Aug. 14, 2001
6196246 Freeze-resistant plumbing system in combination with a backflow preventer Mar. 6, 2001
6178998 Reverse flow prevention apparatus Jan. 30, 2001
5957148 Valve system having a deadman controlled actuating member in a vented chamber Sep. 28, 1999
5950653 High pressure relief valve for use with a backflow preventer Sep. 14, 1999
5860442 Fluid pressure shutoff and relief valve Jan. 19, 1999
5580817 Valve assembly Dec. 3, 1996
5549131 Automatic recirculation valve Aug. 27, 1996
5135020 Pressure sequence valve Aug. 4, 1992
5099871 Low friction proportional unloading valve Mar. 31, 1992
5090437 Low friction proportional unloading valve Feb. 25, 1992
5065784 Valve assemblies and means Nov. 19, 1991
4848390 Switching valve having hydraulic self-holding properties Jul. 18, 1989
4722359 Valve arrangement for high pressure pumps Feb. 2, 1988
4616672 Pressure relief and drain valve Oct. 14, 1986
4518004 Multifunction valve May. 21, 1985
4440189 Corrosive fluid two way check relief valve Apr. 3, 1984
4246924 Valve arrangement Jan. 27, 1981
4237918 Unloader and check valve Dec. 9, 1980
4057072 Unloader valve Nov. 8, 1977
3971397 Pump unloading valve device Jul. 27, 1976











 
 
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