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Class Information
Number: 137/115.03
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
Description: Subject matter wherein the sensor is detecting the variation in the quantity of the fluid flowing in the main flow line in a set period of time and in response thereto the sensor controls the flow in the bypass or relief.










Sub-classes under this class:

Class Number Class Name Patents
137/115.06 Bypass or relief valve biased open 45
137/115.08 Carried choke 12
137/115.09 Choke 47
137/115.12 Flapper 4
137/115.04 Including controlling main line flow 24
137/115.07 Pilot valve operated 32
137/115.11 Venturi 10


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8616858 Dual positive displacement pump pressure regulating control Dec. 31, 2013
8600568 Fluid flow management system and associated methods Dec. 3, 2013
8485212 Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission Jul. 16, 2013
8127787 Siphon breaker Mar. 6, 2012
8091575 Valve system Jan. 10, 2012
7766084 Downhole tool Aug. 3, 2010
7678177 Membrane air dryer and sweep valve Mar. 16, 2010
7249608 Flow control for power steering Jul. 31, 2007
7195028 Self-contained oxygen generator Mar. 27, 2007
7063100 Flow regulator with pressure relief combination valve Jun. 20, 2006
6908377 Explosion protection venting system Jun. 21, 2005
6871661 Combination fitting Mar. 29, 2005
6799599 Valve Oct. 5, 2004
6581623 Auto-switching gas delivery system utilizing sub-atmospheric pressure gas supply vessels Jun. 24, 2003
6289919 Pressure regulating valve with integral damping Sep. 18, 2001
6280159 Valve arrangement and pump for a gear system Aug. 28, 2001
6182503 On-line rheological measurement for process control Feb. 6, 2001
6170508 Fluid flow regulating valve and method Jan. 9, 2001
6135135 Force balanced proportional bypass valve Oct. 24, 2000
6116263 Proportional priority flow regulator with reverse flow control Sep. 12, 2000
5549131 Automatic recirculation valve Aug. 27, 1996
5535768 Method and apparatus for reducing damper operating pressure Jul. 16, 1996
5522369 System and method for controlling delivery of gaseous fuel to an internal combustion engine Jun. 4, 1996
5472009 Fluid regulator Dec. 5, 1995
5464121 Precision fluid dispersing apparatus and method Nov. 7, 1995
5454784 Control valve for a fluid set Oct. 3, 1995
5409032 Pressure washer bypass valve Apr. 25, 1995
5385305 Fuel injection nozzle Jan. 31, 1995
5385455 Flow control valve Jan. 31, 1995
5293952 Hydraulic fluid supply system for an installation in a motor vehicle having power assisted steering with a pressure regulation value connected to the main and secondary circuits Mar. 15, 1994
5174339 Fluid flow control valve Dec. 29, 1992
5160514 Sweep valve for dehydration valve Nov. 3, 1992
5145328 Fuel supply unit for an oil burner Sep. 8, 1992
5137046 Fluid metering apparatus Aug. 11, 1992
5038822 Flow rate control valving apparatus Aug. 13, 1991
4917139 Flow control apparatus for a power steering device Apr. 17, 1990
4878514 Heater control valve with flexible deflector Nov. 7, 1989
4805658 Variable pressure regulating valve Feb. 21, 1989
4633699 Continuous extrusion apparatus Jan. 6, 1987
4589437 Reel speed valve assembly May. 20, 1986
4494560 Self-priming system for liquid pumps Jan. 22, 1985
4456025 Regulator for high volume air flow control Jun. 26, 1984
4400938 Hydraulic fluid feeding device for power steering device Aug. 30, 1983
4388941 Apparatus for producing a rotary speed-dependent control pressure Jun. 21, 1983
4372335 Flow divider valve assembly Feb. 8, 1983
4367765 Flow regulator for hydraulic circuits Jan. 11, 1983
4346727 Apparatus for measuring the amount of fluid supplied by a fluid supply device Aug. 31, 1982
4346555 Exhaust air flow proportioning valve Aug. 31, 1982
4303091 Hydraulic control apparatus for load independent flow regulation Dec. 1, 1981
4285198 Accumulator charging valve Aug. 25, 1981

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