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Class Information
Number: 137/870
Name: Fluid handling > Systems > With flow control means for branched passages > With common valve operator > With electrical actuation
Description: System wherein the coordinating means includes means utilizing electrical energy to effect actuation of a flow control means.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8689822 Pressure regulation in remote zones Apr. 8, 2014
8684033 Two-shutter valve Apr. 1, 2014
8627883 Downhole linear actuation apparatus and method Jan. 14, 2014
8602050 Self-cleaning varnish supply machine Dec. 10, 2013
8584708 Multi-port variable flow control valve with single actuator and interface Nov. 19, 2013
8479770 4-way valve system Jul. 9, 2013
8347920 Pressurized fluid positioner control system Jan. 8, 2013
8327874 Apparatus for wellhead high integrity protection system Dec. 11, 2012
8142556 Compressed-air supply device with improved regeneration capacity Mar. 27, 2012
8113268 Sequential valve member driving mechanism for an HVAC system Feb. 14, 2012
8051875 Pipeline protection system Nov. 8, 2011
8019481 Flow rate ratio control device Sep. 13, 2011
7905251 Method for wellhead high integrity protection system Mar. 15, 2011
7771888 Anode air purge valve design Aug. 10, 2010
7690393 Irrigation system external water supply shutoff Apr. 6, 2010
7673645 Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement Mar. 9, 2010
7363942 Continuous automatic control and distributor valve, with a magnetic seal Apr. 29, 2008
7219697 Twin-solenoid valve May. 22, 2007
7080664 Fluid amplifier with media isolation control valve Jul. 25, 2006
7059581 Valve and a gas burner Jun. 13, 2006
6990992 Damper device Jan. 31, 2006
6968853 Power operated gas valve for heating, with a safety valve Nov. 29, 2005
6957666 Spring valve implemented flow control valves Oct. 25, 2005
6955186 Electromagnetic double switching valve Oct. 18, 2005
6918408 Valve driving device Jul. 19, 2005
6874533 3/2 Normally closed module Apr. 5, 2005
6782919 Revolving valve for an oxygen machine Aug. 31, 2004
6776240 Downhole valve Aug. 17, 2004
6708726 Valve driving apparatus Mar. 23, 2004
6612542 Motor operated butterfly valve Sep. 2, 2003
6450198 Miniature solenoid valve, and methods of manufacturing it Sep. 17, 2002
6382256 Three-way flow control valve May. 7, 2002
6371160 Fluid control element Apr. 16, 2002
6330891 Double-damper apparatus Dec. 18, 2001
6328222 Pulsed air assist valve module Dec. 11, 2001
6286548 Fluid control element Sep. 11, 2001
6237683 Wellbore flow control device May. 29, 2001
6158713 Electromagnetic valve Dec. 12, 2000
6058726 Damper May. 9, 2000
6032693 Solenoid valve assembly for controlling gas supply Mar. 7, 2000
6026860 Solenoid valve apparatus for two end-users Feb. 22, 2000
6003552 Rocker valve for sealing large orifices Dec. 21, 1999
5988532 Valve nozzle Nov. 23, 1999
5979484 Safety and regulation valve unit for a gas installation particularly a heating installation Nov. 9, 1999
5964242 Method of and apparatus for substance processing with small opening gates actuated and controlled by large displacement members having fine surface finishing Oct. 12, 1999
5893390 Flow controller Apr. 13, 1999
5730359 Applicator head for metered release of flowing media Mar. 24, 1998
5709262 Electronic valve for cooling semiconductor processing equipment Jan. 20, 1998
5685337 Solenoid valve with a hinged structure Nov. 11, 1997
5653422 Solenoid valve Aug. 5, 1997

1 2 3










 
 
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