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Class Information
Number: 137/494
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface
Description: Apparatus in which a flow controlling valve is connected to a separate movable nonvalving surface so as to be operated thereby, the fluid flowing in the apparatus and being controlled by the valve reacting on said surface, which moves in response to variations in fluid condition in the apparatus, the motion being transmitted to the valve.










Sub-classes under this class:

Class Number Class Name Patents
137/506 Plural valves biased closed 22
137/497 Responsive to change in rate of fluid flow 29
137/496 Valve closes in responses to reverse flow 64
137/508 Valve seat or external sleeve moves to open valve 219
137/509 Valve seating in direction of flow 122
137/495 With manual or external control for line valve 272
137/507 With means for mounting or connecting to system 30
137/505 With opening bias (e.g., pressure regulator) 120


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8689895 Pilot valve, method of using, and fluid system equipped therewith Apr. 8, 2014
8550112 Multifunctional safety valve device with incorporated proportional pressure regulator Oct. 8, 2013
8496454 Unloader system and method for a compressor Jul. 30, 2013
8474415 Internally dampened pressure relief valve Jul. 2, 2013
8474786 Valve stem and valve plug apparatus for use with fluid regulators Jul. 2, 2013
8397748 Check valve having two seats Mar. 19, 2013
8387654 Automatic pressure reducing valve Mar. 5, 2013
8333178 Control valve arrangement Dec. 18, 2012
8327865 Pressure controlled gas storage Dec. 11, 2012
8307869 Central tire inflation wheel assembly and valve Nov. 13, 2012
8205636 Flow rate control valve Jun. 26, 2012
8162068 Pilot valve, method of using, and fluid system equipped therewith Apr. 24, 2012
8141579 Valve with cushioned opening system Mar. 27, 2012
8047226 Pressure relief valves and pneumatic control systems Nov. 1, 2011
8020584 Variable valve for impact dispersal device Sep. 20, 2011
8011380 Single component two-stage regulator Sep. 6, 2011
7997297 System and method for performing a chemical experiment Aug. 16, 2011
7938141 Single component two-stage regulator May. 10, 2011
7909055 Valve provided with a passage for conveying a medium and an installation provided with such a valve Mar. 22, 2011
7905247 Vacuum actuated valve for high capacity storage and delivery systems Mar. 15, 2011
7775504 Fluid flow control device Aug. 17, 2010
7753288 System for failsafe controlled dispensing of liquid material Jul. 13, 2010
7708028 Fail-safe vacuum actuated valve for high pressure delivery systems May. 4, 2010
7699072 Device for regulating the delivery pressure of combustible gases Apr. 20, 2010
7686051 Central tire inflation wheel assembly and valve Mar. 30, 2010
7673650 Sensitive fluid balancing relief valve Mar. 9, 2010
7617839 Constant flow valve Nov. 17, 2009
7520291 Pressure-compensated, subsea chemical injection valve Apr. 21, 2009
7458390 Breath controlled air inlet for blower Dec. 2, 2008
7431047 Device for underpressure-activated dispensing of fluids Oct. 7, 2008
7401372 Swimming pool cleaning apparatus Jul. 22, 2008
7363938 Constant flow valve assembly Apr. 29, 2008
7353834 Variable rate pressure regulator Apr. 8, 2008
7347206 Control group of a second-stage regulator for scuba divers Mar. 25, 2008
7302961 Surge relief valve Dec. 4, 2007
7216668 Interruption valve with automatic reset May. 15, 2007
7171980 Springless regulator valve assembly Feb. 6, 2007
7159263 Flexible plate for swimming pool suction cleaner Jan. 9, 2007
7150825 Sealing apparatus of fuel filter Dec. 19, 2006
7117887 Quick fill device Oct. 10, 2006
7059325 Vent assembly Jun. 13, 2006
6994928 System and method for regulating steam pressure in a fuel cell system Feb. 7, 2006
6966092 Swimming pool cleaning apparatus Nov. 22, 2005
6959724 Multiple regulator vacuum delivery valve assembly Nov. 1, 2005
6957660 Pressure relief valve with bidirectional damping Oct. 25, 2005
6948481 Electrical connections for an integrated pressure management apparatus Sep. 27, 2005
6945272 Passively actuated valve Sep. 20, 2005
6931859 Variable turbine cooling flow system Aug. 23, 2005
6889692 Vent valve assembly May. 10, 2005
6789559 Pressure regulator Sep. 14, 2004

1 2 3 4 5 6










 
 
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