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Class Information
Number: 137/115.13
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Pressure responsive
Description: Subject matter wherein the sensor is detecting the pressure of the fluid in the main flow line and in response thereto controls the bypass or relief valve.










Sub-classes under this class:

Class Number Class Name Patents
137/115.16 Bypass or relief valve biased open 85
137/115.18 Bypass or relief valve responsive to pressure downstream of outlet valve 29
137/115.14 Common sensor for both bypass or relief valve and other branch valve 24
137/115.25 Electrical control 29
137/115.24 Mechanical movement between sensor and valve 7
137/115.23 Pilot valve operated 40
137/115.21 Plural sensors for single bypass or relief valve 33
137/115.26 Sensor rigid with valve 43
137/116.3 With pressure reducing inlet valve 100


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8596993 Dual-pump supply system with bypass-controlled flow regulator Dec. 3, 2013
8578958 Leak mitigation for pressurized bi-directional systems Nov. 12, 2013
8511091 Swirler for a fuel injector Aug. 20, 2013
8499549 Exhaust gas control system and exhaust gas control method Aug. 6, 2013
8485212 Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission Jul. 16, 2013
8434508 Relief valve May. 7, 2013
8429892 Combustion apparatus having a fuel controlled valve that temporarily flows purging air Apr. 30, 2013
8403000 Assembly and system for tank filling, withdrawal and pressure management of a cryogenic liquid Mar. 26, 2013
8215331 Leak mitigation for pressurized bi-directional systems Jul. 10, 2012
8156742 Fuel-injection device in a turbomachine Apr. 17, 2012
8127786 Proportional selector valve for selecting between two pressure sources Mar. 6, 2012
8091576 By-pass and pressure regulator valve Jan. 10, 2012
8070461 Control valve assembly for a compressor unloader Dec. 6, 2011
8057193 Screw compressor comprising a relief valve Nov. 15, 2011
7784494 Flow divider Aug. 31, 2010
7784483 Backflow preventer Aug. 31, 2010
7628590 Method and apparatus for reducing free flow risk Dec. 8, 2009
7493195 Fluid regulation control Feb. 17, 2009
7025083 Quick closing shut-off valve Apr. 11, 2006
6994102 Pressure regulating valve Feb. 7, 2006
6988705 Fluent control valve Jan. 24, 2006
6916456 Pressure relief device for medical instrument reprocessor Jul. 12, 2005
6827096 Relief valve Dec. 7, 2004
6681794 Unloading valve Jan. 27, 2004
6648610 Fuel injection system with structurally biased relief valve Nov. 18, 2003
6647721 Hydraulic system for suppressing oscillation in heavy equipment Nov. 18, 2003
6601602 Pressure-control valve Aug. 5, 2003
6598705 Lubricating system for internal combustion engine Jul. 29, 2003
6554017 Pressure regulating valve with secondary venting measures Apr. 29, 2003
6306292 Fuel filter with internal pressure regulator Oct. 23, 2001
6293296 High-pressure fuel pump device Sep. 25, 2001
6196246 Freeze-resistant plumbing system in combination with a backflow preventer Mar. 6, 2001
6186750 Oil pump control valve spool with pilot pressure relief valve Feb. 13, 2001
6116263 Proportional priority flow regulator with reverse flow control Sep. 12, 2000
6105635 Self regulating valve for a fluid exchange apparatus Aug. 22, 2000
6096199 Oil filter cartridge with temperature sensitive bypass valve Aug. 1, 2000
6086752 Fuel filter with internal pressure regulator Jul. 11, 2000
6041453 Jet directed pool skimmer with diverter valve Mar. 28, 2000
5979788 Pressure washer valve assembly Nov. 9, 1999
5950653 High pressure relief valve for use with a backflow preventer Sep. 14, 1999
5862986 Hot melt adhesive applicator with metering gear-driven head Jan. 26, 1999
5850844 Pressure reduction valve Dec. 22, 1998
5797732 Variable capacity pump having a pressure responsive relief valve arrangement Aug. 25, 1998
5755251 Full flow pressure trap unloader valve May. 26, 1998
5711757 Controller especially for pneumatic continuous passive motion devices Jan. 27, 1998
5706785 Fuel supply system for internal combustion engines Jan. 13, 1998
5704386 Multistage regulating valve Jan. 6, 1998
5694966 Flow responsive pressure regulating unloader Dec. 9, 1997
5649561 Fuel filter and pressure regulator system Jul. 22, 1997
5513958 Accumulator charging valve May. 7, 1996

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