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Class Information
Number: 251/82
Name: Valves and valve actuation > Lost motion between actuator and valve > Check valve with external opening and closing means
Description: Devices wherein the actuator is so connected to the valve that in its intermediate position it permits the valve to operate as a check valve and in its extreme positions it holds the valve open or closed.










Sub-classes under this class:

Class Number Class Name Patents
251/83 Spring 84


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8672289 Domestic water tap or faucet with floating buoyant ball valve and activation rod Mar. 18, 2014
8656946 Valves Feb. 25, 2014
8652056 Deflation control valve Feb. 18, 2014
8627852 Apertured flow control element and housing structure therefor Jan. 14, 2014
8413674 Valve with electromechanical device for actuating the valve Apr. 9, 2013
8356619 Non return valve and a proceeding to form a non return valve system to be fasten together inside a receptacle intended to contain air or liquid Jan. 22, 2013
8316888 Fluid-biased hydraulic control valve Nov. 27, 2012
8307841 Valve for inflatable objects Nov. 13, 2012
8191570 Bi-directional flapper valve Jun. 5, 2012
8157538 Capacity modulation system for compressor and method Apr. 17, 2012
8113235 Apparatus and methods for facilitating prosthesis donning, doffing, retention, and fit Feb. 14, 2012
8074685 One-way valve with flapper for vacuum bag Dec. 13, 2011
8028715 Check valve for vacuum sewage pipe and vacuum sewage system Oct. 4, 2011
8016261 Safety air valve of a receiving bag Sep. 13, 2011
7997296 Air valve device Aug. 16, 2011
7972064 One way valve and container Jul. 5, 2011
7938138 Valve for inflatable objects May. 10, 2011
7644724 Valve with electromechanical device for actuating the valve Jan. 12, 2010
7628152 Breathing regulator with nonlinear positive pressure spring Dec. 8, 2009
7594639 Cylinder valve Sep. 29, 2009
7565978 Vacuum packaging bags equipped with deflating device and deflating cylinders for use thereof Jul. 28, 2009
7563412 Reactor for solid phase synthesis Jul. 21, 2009
7552907 One way valve for fluid evacuation from a container Jun. 30, 2009
7513481 One way valve Apr. 7, 2009
7475440 Inflatable device forming mattresses and cushions Jan. 13, 2009
7475864 Deflation valve for compression bag and compression bag equipped with the deflation valve Jan. 13, 2009
7458393 Control valve with integrated insert providing valve seat and plug guides Dec. 2, 2008
7398953 One way valve for fluid evacuation from a container Jul. 15, 2008
7380767 Valve Jun. 3, 2008
7322558 Non-refillable valve Jan. 29, 2008
7278445 Shoe having an inflatable bladder Oct. 9, 2007
7273065 Inflation/deflation valve for cargo dunnage Sep. 25, 2007
7232108 Exhaust valve for a bag Jun. 19, 2007
7219850 Mechanical valve assembly May. 22, 2007
7124770 Shear mechanism for backpressure relief in a choke valve Oct. 24, 2006
7124774 Control valve Oct. 24, 2006
7121302 Air tap assembly Oct. 17, 2006
7055794 Air suction valve for storage bag Jun. 6, 2006
7024852 Multi-purpose valve Apr. 11, 2006
6986360 Valve for inflatable objects Jan. 17, 2006
6957799 Valve for a non-refillable pressurized container Oct. 25, 2005
6808159 Non-refillable valve Oct. 26, 2004
6779552 Domestic hot water distribution and resource conservation system Aug. 24, 2004
6755208 Valve for inflatable objects Jun. 29, 2004
6619325 Hydraulic hybrid accumulator shut-off valve Sep. 16, 2003
6595486 Non-refillable valve Jul. 22, 2003
6554591 Micropump including ball check valve utilizing ceramic technology and method of fabrication Apr. 29, 2003
6508264 Valve for inflatable objects Jan. 21, 2003
6453667 Air control valve and method for engine exhaust gas treatment Sep. 24, 2002
6409146 Check valve arrangement for a diagnostic test point Jun. 25, 2002

1 2 3










 
 
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