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Class Information
Number: 137/115.26
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Pressure responsive > Sensor rigid with valve
Description: Subject matter wherein the sensor is either (a) assembled as an integral part of the bypass or relief valve, or (b) attached inflexibly to the bypass or relief valve.










Sub-classes under this class:

Class Number Class Name Patents
137/115.27 Flexible sensor 15
137/115.28 Pressure responsive outlet valve 4


Patents under this class:

Patent Number Title Of Patent Date Issued
8578967 Pressure regulating valve for aircraft engine Nov. 12, 2013
8567302 Compressed gas operated instrument, in particular a surgical instrument Oct. 29, 2013
8485212 Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission Jul. 16, 2013
8091577 Valve Jan. 10, 2012
8066026 Diaphragm controlled bypass valve Nov. 29, 2011
7809954 Biometric control of equipment Oct. 5, 2010
7677263 Tandem pump valve structure Mar. 16, 2010
7373992 Automatic pressure regulating valve for a pneumatic tool May. 20, 2008
7047996 Flow controlling apparatus May. 23, 2006
6681794 Unloading valve Jan. 27, 2004
6463819 Uninterruptible oil supply system Oct. 15, 2002
6293296 High-pressure fuel pump device Sep. 25, 2001
6186750 Oil pump control valve spool with pilot pressure relief valve Feb. 13, 2001
6109027 Exhaust restriction device Aug. 29, 2000
5890504 Process for transporting a thermally unstable viscous mass Apr. 6, 1999
5890509 Hydraulic temperature compensated cooler bypass control for an automatic transmission Apr. 6, 1999
5762134 Hydraulic temperature compensated cooler bypass control for an automatic transmission Jun. 9, 1998
5758683 On/off circuit for a hydraulic system Jun. 2, 1998
5738133 Liquid analyzing apparatus Apr. 14, 1998
5694966 Flow responsive pressure regulating unloader Dec. 9, 1997
5464121 Precision fluid dispersing apparatus and method Nov. 7, 1995
5263508 Sewer line water trap charging valve with improved adjustment for house line pressure changes Nov. 23, 1993
5060333 Apparatus for cleaning pipelines for beverages and the like with a relief valve in the liquid admitting inlet Oct. 29, 1991
4949748 Backflash interrupter Aug. 21, 1990
4893646 Fluid pressure regulator Jan. 16, 1990
4834131 Safety system for pneumatic tools May. 30, 1989
4791950 Pressure limiting valve Dec. 20, 1988
4757836 Pressurized fluid modulator assembly, particularly for a power-assisted steering system in a vehicle Jul. 19, 1988
4557287 Pressure control valve for fuel injection pumps Dec. 10, 1985
4353385 Diaphragm pressure regulator Oct. 12, 1982
4294278 Pressure modulating valve Oct. 13, 1981
4292990 High pressure unloader valve Oct. 6, 1981
4279268 Multi-level pressure regulating valve Jul. 21, 1981
4262775 Oil supply means for a machine Apr. 21, 1981
4258793 Oil well testing string bypass valve Mar. 31, 1981
4257484 Pressure differential circulating valve Mar. 24, 1981
4252143 Actuator Feb. 24, 1981
4239732 High velocity mixing system Dec. 16, 1980
4226558 Control system Oct. 7, 1980
4180089 Thrust piston biasing means Dec. 25, 1979
4143673 Pressure regulator Mar. 13, 1979
4019527 Modulating flow control valve Apr. 26, 1977
4015620 High response unloading valve Apr. 5, 1977











 
 
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