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Class Information
Number: 137/565.35
Name: Fluid handling > Systems > With pump > With pump bypass
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
8656950 Drag reduction of asphaltenic crude oils Feb. 25, 2014
8616236 Drag reduction of asphaltenic crude oils Dec. 31, 2013
8511340 Suction jet pump Aug. 20, 2013
8485222 Systems and methods for preventing oil migration Jul. 16, 2013
8220604 Damping force variable valve and shock absorber including the same Jul. 17, 2012
7954506 Automatic freeze protection system for domestic plumbing systems Jun. 7, 2011
RE41861 Decoupled check-relief valve Oct. 26, 2010
7077160 Water pressure pump Jul. 18, 2006
7059345 Pump bypass system Jun. 13, 2006
7044157 By-pass valve unit for a high pressure liquid delivery unit May. 16, 2006
6920897 Potable water circulation system Jul. 26, 2005
6910502 Decoupled check-relief valve Jun. 28, 2005
6871661 Combination fitting Mar. 29, 2005
6799602 Combination fitting Oct. 5, 2004
6705344 Potable water circulation system Mar. 16, 2004
6543476 Relief valve for an oil pump Apr. 8, 2003
6497556 Fluid level control for a downhole well pumping system Dec. 24, 2002
6276395 Processing installation for rinsing water having an independent recycling filtering device Aug. 21, 2001
6123509 Pressure valve device for a cleaning apparatus Sep. 26, 2000
6029688 Water wheel for pumping chemical treatment into water stream Feb. 29, 2000
5921274 Internal relief and bypass valve for pumps and piping systems Jul. 13, 1999
5603344 Apparatus for recovering and saving chilled water in hot water lines having adjustable thermostatic control Feb. 18, 1997
5564317 One-piece pressure relief valve for transmission cooling system Oct. 15, 1996
5421362 System of plumbing for an over-the-road vehicle Jun. 6, 1995
5375619 Protective circuit for pressure and return Dec. 27, 1994
5318070 Electric faucet valve operator adapter Jun. 7, 1994
5285759 Fuel system Feb. 15, 1994
5156177 Flow loading unloader valve Oct. 20, 1992
5154202 Low forward pressure burst-high backpressure resistant rupture disc Oct. 13, 1992
5148792 Pressure-responsive fuel delivery system Sep. 22, 1992
5145328 Fuel supply unit for an oil burner Sep. 8, 1992
5099871 Low friction proportional unloading valve Mar. 31, 1992
5097857 Electro-hydraulic valve-actuator system Mar. 24, 1992
4981154 Fluid flow control device Jan. 1, 1991
4953582 Combined pressure regulator and relief valve having a single biasing means Sep. 4, 1990
4941502 Low pressure recirculation valve Jul. 17, 1990
4917570 Turbine shaft axial load protection system Apr. 17, 1990
4838311 Control system for a programmed spraying device Jun. 13, 1989
4833880 Fluidic set point amplifier apparatus and method, and uses thereof May. 30, 1989
4735225 Method and apparatus for drawing and regulating the output and pressure of a liquid additive Apr. 5, 1988
4569483 Apparatus for cleaning objects by spraying Feb. 11, 1986
4503885 Engine fuel supply system Mar. 12, 1985
4487224 Air switch and filter combination Dec. 11, 1984
4139019 Method and system for transporting natural gas to a pipeline Feb. 13, 1979
4022551 Variable capacity type gear pump May. 10, 1977











 
 
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