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Class Information
Number: 137/599.07
Name: Fluid handling > Systems > Dividing into parallel flow paths with recombining > Having digital flow controller > Having plural branches under common control for separate valve actuators > Electromagnetic or electric control (e.g., digital control, bistable electro control, etc.)
Description: Subject matter wherein at least one valve is operated by electricity.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8651135 Mass flow controller, mass flow controller system, substrate processing device, and gas flow rate adjusting method Feb. 18, 2014
8622073 Apparatus and method for controlling flow rate of liquid, and storage medium Jan. 7, 2014
8555920 Flow rate ratio variable type fluid supply apparatus Oct. 15, 2013
8528314 Method and apparatus for combined cycle power plant startup Sep. 10, 2013
8454126 Print head with electromagnetic valve assembly Jun. 4, 2013
8327874 Apparatus for wellhead high integrity protection system Dec. 11, 2012
8051875 Pipeline protection system Nov. 8, 2011
7673645 Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement Mar. 9, 2010
7665305 Valve assembly for modulating fuel flow to a gas turbine engine Feb. 23, 2010
7426932 Spray fill device and method for using the same Sep. 23, 2008
7293581 Latching micro-regulator Nov. 13, 2007
7194863 Turbine speed control system and method Mar. 27, 2007
7140384 Substrate processing equipment having mass flow controller Nov. 28, 2006
6981518 Latching micro-regulator Jan. 3, 2006
6705345 Micro valve arrays for fluid flow control Mar. 16, 2004
6534003 Valve and a method of using a valve Mar. 18, 2003
6360762 Method for feeding gases for use in semiconductor manufacturing Mar. 26, 2002
6240944 Addressable valve arrays for proportional pressure or flow control Jun. 5, 2001
6234204 Flow control valve May. 22, 2001
6089533 Arrangement having at least one hydraulic actuator Jul. 18, 2000
6032923 Fluid valves having cantilevered blocking films Mar. 7, 2000
5927325 Microelectromechanical machined array valve Jul. 27, 1999
5875817 Digital gas metering system using tri-stable and bi-stable solenoids Mar. 2, 1999
5765585 Sample decade dilution system and procedure Jun. 16, 1998
5520333 Tube metering control system May. 28, 1996
5467797 Two-position three-way solenoid valve Nov. 21, 1995
5341834 Multiport valve for fluid transfer systems Aug. 30, 1994
5329965 Hybrid valving system for varying fluid flow rate Jul. 19, 1994
5289811 Purge control device Mar. 1, 1994
5150690 Flow control system Sep. 29, 1992
5085247 Machining fluid supply device for a wire cut electric discharge machine Feb. 4, 1992
5065794 Gas flow distribution system Nov. 19, 1991
5048564 High-speed solenoid valve for a fluid under pressure, e.g. for pneumatic circuits Sep. 17, 1991
4974707 Shock absorber Dec. 4, 1990
4877056 Digital valve Oct. 31, 1989
4719941 Throttle valve Jan. 19, 1988
4628961 Multiple orifice stepper control valve Dec. 16, 1986
4624282 Two-stage solenoid valve Nov. 25, 1986
4577658 Calibrated fluid flow control device Mar. 25, 1986
4369964 Sheet feed apparatus for printer or the like Jan. 25, 1983
4356840 Digital fluid flow control system Nov. 2, 1982
4313465 Method and control device for dosing flow media Feb. 2, 1982
4303097 Digital fluid flow control apparatus Dec. 1, 1981
4287909 Valve for developing variable output pressure Sep. 8, 1981
4170245 Digital control valve Oct. 9, 1979
4148340 Digital fluid flow control system Apr. 10, 1979
4036011 Multiple valve sequential control for a combined cycle power plant Jul. 19, 1977
4030523 Digital flow control system Jun. 21, 1977
4019533 Digital valve assembly Apr. 26, 1977
3999572 Fluid flow instrumentality Dec. 28, 1976

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