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Class Information
Number: 137/599.05
Name: Fluid handling > Systems > Dividing into parallel flow paths with recombining > Having digital flow controller
Description: Subject matter wherein at least one of the parallel flow paths provide a specific flow rate controlled by a valve which is completely open or closed (the valve itself provides no adjustable metering).

Sub-classes under this class:

Class Number Class Name Patents
137/599.06 Having plural branches under common control for separate valve actuators 12

Patents under this class:

Patent Number Title Of Patent Date Issued
8662107 Switch device for water conduit valve Mar. 4, 2014
6962167 Choke valve Nov. 8, 2005
6810308 Apparatus and method for mass flow controller with network access to diagnostics Oct. 26, 2004
6269831 Precision volumetric measuring and mixing apparatus Aug. 7, 2001
5938425 Method and device for control of the flame size of gas-fired cooking or baking appliances Aug. 17, 1999
5520333 Tube metering control system May. 28, 1996
5411059 Multiple flow rate fluid control valve assembly May. 2, 1995
5273070 Water treatment apparatus Dec. 28, 1993
5247964 Valve with redundancy on closing Sep. 28, 1993
5150690 Flow control system Sep. 29, 1992
5069188 Regulated canister purge solenoid valve having improved purging at engine idle Dec. 3, 1991
5056554 Fluid loss, damage prevention and control system Oct. 15, 1991
5046686 Clack valve and flap valve with a controlled valve as well as aircraft with controlled valve of this type Sep. 10, 1991
4930552 Drain standpipe Jun. 5, 1990
4868363 Apparatus for supplying a working fluid in an electric discharge machine Sep. 19, 1989
4709858 Digital flow control system Dec. 1, 1987
4664146 Combination economizer valve and locking means for oxygen supply system May. 12, 1987
4656827 Fuel metering system for a gas turbine engine Apr. 14, 1987
4653530 Fuel control value construction, parts therefor and methods of making the same Mar. 31, 1987
4644967 Fluid flow control system Feb. 24, 1987
4643002 Continuous metered flow multizone air conditioning system Feb. 17, 1987
4643224 Alarm test device for a sprinkler system Feb. 17, 1987
4609011 Flow control valve Sep. 2, 1986
4518011 Control valve unit for the cylinder of a fluid actuator May. 21, 1985
4374785 Metering device for fuel control system Feb. 22, 1983
4285339 Electronic closed loop servomechanism and electronic scuba regulator therefor Aug. 25, 1981
4256100 Flow control equipment Mar. 17, 1981
4248263 Digital fluid flow control apparatus Feb. 3, 1981
4244396 Digital fluid flow control system Jan. 13, 1981
4207919 Digital fluid flow control system Jun. 17, 1980
4191215 Digital fluid flow rate controller Mar. 4, 1980
4170245 Digital control valve Oct. 9, 1979
4164959 Metering valve Aug. 21, 1979
4061156 Transition module for a pneumatic sequencer and an associated sequencer Dec. 6, 1977
RE29383 Digital fluid flow rate measurement or control system Sep. 6, 1977
4000607 Fluid control valve and method Jan. 4, 1977
3963146 Liquid-dispensing installation Jun. 15, 1976
3937248 Fluid flow control system employing a plurality of digital valve elements Feb. 10, 1976

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