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Class Information
Number: 137/102
Name: Fluid handling > Self-proportioning or correlating systems > Supply and exhaust type
Description: Systems in which an outlet or receiver alternatively receives a fluid from a source of supply and drains the fluid to an exhaust, the flow of fluid from the supply or to the exhaust, being controlled in response to a means sensing a change in condition.










Sub-classes under this class:

Class Number Class Name Patents
137/106 Reversing or 4-way valve systems 83
137/103 Vacuum or suction pulsator type (e.g., milking machine) 31
137/107 Waste responsive to flow stoppage 102


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8678025 Method and apparatus for controlling fluid pressure Mar. 25, 2014
8544490 Valve Oct. 1, 2013
8474480 Actuator control valve Jul. 2, 2013
8469047 System to control pressure in a test device Jun. 25, 2013
8453647 Device for pressure equalization on a medical gas delivery means Jun. 4, 2013
8408232 Sequence valve Apr. 2, 2013
8365731 Pressure reducing valve with flexible cuff Feb. 5, 2013
8336571 Overpressure shutoff and relief valve assembly Dec. 25, 2012
8333330 Systems and methods for controlling temperature and pressure of fluids Dec. 18, 2012
8240334 Arrangement for metering a gaseous sample in a carrier gas stream Aug. 14, 2012
8205632 Fluid flow control device Jun. 26, 2012
8162000 Adjustable pneumatic system for a surgical machine Apr. 24, 2012
8156953 Method and device for regulating a pressure in a hydraulic system Apr. 17, 2012
8056576 Dual setpoint pressure controlled hydraulic valve Nov. 15, 2011
7997295 Controller, system and method for providing supplementing water Aug. 16, 2011
7975715 Trailer spring brake valve Jul. 12, 2011
7882836 Diaphragm valve for a respirator Feb. 8, 2011
7823602 Hydraulic system having at least one hydraulic valve for actuating a component Nov. 2, 2010
7748385 Valved holding chamber for use with an aerosol medication delivery system Jul. 6, 2010
7717116 Apparatus for connecting a respiratory device with a patient May. 18, 2010
7686036 Valve apparatus for movable oxygen cylinder Mar. 30, 2010
7677263 Tandem pump valve structure Mar. 16, 2010
7673652 Hydraulic pressure control device for automatic transmission Mar. 9, 2010
7637279 Shuttle valve Dec. 29, 2009
7621537 Height control valve for vehicle axle/suspension system Nov. 24, 2009
7575221 Adjusting device and pressure relief valve Aug. 18, 2009
7571738 Flow control device Aug. 11, 2009
7505818 Converter method, system and apparatus Mar. 17, 2009
7490622 Rotatable quick exhaust valve Feb. 17, 2009
7455083 Accumulator for gaseous systems Nov. 25, 2008
7431042 Pressure releasing device for spray pump Oct. 7, 2008
7416030 Adjustable time delay for fire suppression system Aug. 26, 2008
7392824 Fluid power device with a pressure regulator Jul. 1, 2008
7381650 Method and apparatus for process control in time division multiplexed (TDM) etch processes Jun. 3, 2008
7352287 Pneumatic controller Apr. 1, 2008
7314059 Systems and methods for controlling pressure of fluids Jan. 1, 2008
7255122 Enhanced exhaust flow control feature Aug. 14, 2007
7204821 Surgical fluid management system with suction control Apr. 17, 2007
7115520 Method and apparatus for process control in time division multiplexed (TDM) etch process Oct. 3, 2006
7089953 Controlled pneumatic device for automatic inflating/deflating of a confinement capacity of a gas fluid under relative pressure Aug. 15, 2006
7021909 Oscillator for pneumatic pump having single valve Apr. 4, 2006
7014076 Syrup delivery system Mar. 21, 2006
6997206 Pressure Compensating valve Feb. 14, 2006
6904925 Gas assist mold dump valve Jun. 14, 2005
6827096 Relief valve Dec. 7, 2004
6820640 Vibratory patient support system Nov. 23, 2004
6805328 Shut-off valve apparatus Oct. 19, 2004
6796323 Dual seat valve Sep. 28, 2004
6789563 Pneumatic exhaust controller Sep. 14, 2004
6779543 BOP operating system with quick dump valve Aug. 24, 2004

1 2 3 4 5 6










 
 
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