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Class Information
Number: 137/630.14
Name: Fluid handling > Systems > Sequentially progressive opening or closing of plural valves > Pressure equalizing or auxiliary shunt flow > One valve seats against other valve (e.g., concentric valves) > First valve moves second valve
Description: Systems in which a structure rigidly connected to a first opened valve head engages structure rigidly connected to a second valve head so that continued motion of the first valve operator subsequently causes the second valve head to be positively opened.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8272532 Beverage container lid Sep. 25, 2012
8196892 Fluid control valve Jun. 12, 2012
8113240 Low emission fluid transfer device Feb. 14, 2012
8113596 Solenoid valve for brake system Feb. 14, 2012
8056154 Automatic flushing device with magnetic valve Nov. 15, 2011
8020383 Steam valve and generator set Sep. 20, 2011
7967063 Air conditioning apparatus for vehicle Jun. 28, 2011
7798173 Electrically controllable valve Sep. 21, 2010
7753067 Shear valve employing two-stage poppet valve, particularly for use in fueling environments Jul. 13, 2010
7617842 Valves for fuel cartridges Nov. 17, 2009
7520299 Valve structure and control techniques Apr. 21, 2009
7383859 Main steam valve for a steam turbine Jun. 10, 2008
7128080 Surge prevention device Oct. 31, 2006
7011110 High capacity co-axial gas valve Mar. 14, 2006
6997392 Injection valve comprising a pump piston Feb. 14, 2006
6981688 Flow control device Jan. 3, 2006
6957661 Valve with pressurization rate reduction device Oct. 25, 2005
6920898 High-pressure valve Jul. 26, 2005
6901962 Surge prevention device Jun. 7, 2005
6729351 Expanded range multiple-stage metering valve May. 4, 2004
6655409 Combined stop and control valve for supplying steam Dec. 2, 2003
6634382 Hydraulic control device Oct. 21, 2003
6491056 Sprinkler alarm test and drainage device for fire protection systems Dec. 10, 2002
6371149 Shuttle valve assembly and improved shifting thereof Apr. 16, 2002
6309033 Switchable orifice solenoid with plate valve for an anti-lock brake system Oct. 30, 2001
6234208 Shut-off device May. 22, 2001
6105598 Low capacity chlorine gas feed system Aug. 22, 2000
6085771 Two-stage fuel tank vapor recovery vent valve and method of making same Jul. 11, 2000
6033192 Fluid transfer system Mar. 7, 2000
6032692 Electromagnetic valve, in particular for hydraulic motor vehicle braking systems with wheel slip regulation Mar. 7, 2000
6003554 Shut-off device Dec. 21, 1999
5678590 Fuel cutoff valve Oct. 21, 1997
5640989 Fuel cut-off valve Jun. 24, 1997
5540256 Water level locking device for water tanks Jul. 30, 1996
5494078 Pneumatic lift device for dual flow valve Feb. 27, 1996
5458152 Self-closing water valve Oct. 17, 1995
5450877 Magnetically-controlled valve Sep. 19, 1995
5447175 Fuel delivery device of fuel tank Sep. 5, 1995
5386844 Float actuated combination air and vacuum valve Feb. 7, 1995
5346041 Sliding exhaust brake system Sep. 13, 1994
5263679 Valve with actuator Nov. 23, 1993
5220944 Dual blend door assembly Jun. 22, 1993
5209454 Automatic safety shutoff valve May. 11, 1993
5195557 Valve with a control chamber and with controlled closing Mar. 23, 1993
5188150 Valve assembly Feb. 23, 1993
5137055 Stop valve Aug. 11, 1992
5119859 Steam governing valve Jun. 9, 1992
5064032 Damping force adjusting hydraulic shock absorber Nov. 12, 1991
5044389 High volume fuel vapor release valve Sep. 3, 1991
4998561 Flow control valve Mar. 12, 1991

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