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Class Information
Number: 137/107
Name: Fluid handling > Self-proportioning or correlating systems > Supply and exhaust type > Waste responsive to flow stoppage
Description: Systems wherein a waste or drain is opened in response to the stopping of the fluid flow from the supply to the outlet or receiver.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8617393 Method and device for supply of a dialysis unit with dialysis fluid Dec. 31, 2013
8545190 Valve with shuttle for use in a flow management system Oct. 1, 2013
8496824 Method and device for supply of a dialysis unit with dialysis fluid Jul. 30, 2013
8353313 Three-port pintle valve for control of actuation oil Jan. 15, 2013
8316876 Flushing device with removable drain ring for potable water systems Nov. 27, 2012
8281866 Production tubing drain valve Oct. 9, 2012
8267666 Air flow control apparatus Sep. 18, 2012
8196844 Three-way valves and fuel injectors using the same Jun. 12, 2012
8056576 Dual setpoint pressure controlled hydraulic valve Nov. 15, 2011
8056575 Check valve structure for use in pump of hydraulic cylinder Nov. 15, 2011
7726328 Medical valve and method to monitor intra-abdominal pressure Jun. 1, 2010
7644722 Medical valve and method to monitor intra-abdominal pressure Jan. 12, 2010
7488378 Device for separating oil from an oil-air separator of an oil reservoir Feb. 10, 2009
7458388 Freeze safe valve Dec. 2, 2008
7431042 Pressure releasing device for spray pump Oct. 7, 2008
7401620 Yard hydrant with drain port check valve Jul. 22, 2008
7278442 Vented port-cap for fire hydrant Oct. 9, 2007
7021909 Oscillator for pneumatic pump having single valve Apr. 4, 2006
6978636 Device for measuring pressure in automobile air conditioner and charging same with refrigerant and method of same Dec. 27, 2005
6966332 Air valve assembly for a fire hydrant Nov. 22, 2005
6789563 Pneumatic exhaust controller Sep. 14, 2004
6769450 Valve system Aug. 3, 2004
6749130 Check line valve faster venting method Jun. 15, 2004
6681796 Drainage valve pipe tap assembly Jan. 27, 2004
6279594 Flow actuated valve Aug. 28, 2001
6209565 Pressure latched poppet cartridge valve Apr. 3, 2001
6209570 Automatic flush valve Apr. 3, 2001
5964241 Siphon freeze drain valve for underground irrigation systems Oct. 12, 1999
5915405 Two-way diverter check valve Jun. 29, 1999
5803111 Device for purging water supply line Sep. 8, 1998
5718847 Automatic siphon drain apparatus and method Feb. 17, 1998
5669405 Apparatus and method for automatically disabling pressure relief valve of backflow preventer Sep. 23, 1997
5640991 Siphon freeze drain valve for underground irrigation systems Jun. 24, 1997
5584313 Piston pressure-type vacuum breaker Dec. 17, 1996
5441202 Misting system with improved couplers Aug. 15, 1995
5439022 Lavage valve Aug. 8, 1995
5425393 Backflow prevention and detection system Jun. 20, 1995
5397219 Integral liquid pump and drainback valve Mar. 14, 1995
5363875 Hydraulic disconnector Nov. 15, 1994
5299595 Two-way draining valve for coffee making machines Apr. 5, 1994
5240271 Tractor-mounted integrated gladhand and quick-release valve for tractor-trailer highway vehicles Aug. 31, 1993
5199260 Wastegate actuator control valve for a turbocharger Apr. 6, 1993
5163465 Vacuum breaker venting valve Nov. 17, 1992
5163779 Drain apparatus Nov. 17, 1992
5151175 System to automatically drain filter backwash water Sep. 29, 1992
5094261 Non-return valve Mar. 10, 1992
5080527 Drain apparatus Jan. 14, 1992
5067519 Safety valve for fluid systems Nov. 26, 1991
4976279 Self-draining backflow prevention valve Dec. 11, 1990
4953581 Self draining valve member for use in underground water lines Sep. 4, 1990

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