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Class Information
Number: 137/601.01
Name: Fluid handling > Systems > Dividing into parallel flow paths with recombining > With common operator
Description: Subject matter having at least one valve in each parallel flow path and wherein both valves are controlled by a single operating means.










Sub-classes under this class:

Class Number Class Name Patents
137/601.02 Balanced valve 9
137/601.12 Mechanical movement between actuator and non-rotary valve 12
137/601.05 Rotary valve 26
137/601.03 Single resilient member actuates or forms plural passages 5
137/601.04 Valves deform to close passage 16


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8689822 Pressure regulation in remote zones Apr. 8, 2014
8534317 Hydraulically controlled barrier valve equalizing system Sep. 17, 2013
8336309 Turbocharger with dual wastegate Dec. 25, 2012
8327880 Sensor replacement valve Dec. 11, 2012
7934519 Valve unit for a microfluid system May. 3, 2011
7814748 Exhaust bypass valve remote linkage Oct. 19, 2010
7798167 Internal pressure controller of chamber and internal pressure subject-to-control type chamber Sep. 21, 2010
7594517 Gas supply facility of a chamber and a method for an internal pressure control of the chamber for which the facility is employed Sep. 29, 2009
7565912 Frost-proof exterior-wall valve Jul. 28, 2009
7383860 Flow control valve with two stage pintel and concentric valve seats Jun. 10, 2008
7341074 Multi-stage pressure regulator Mar. 11, 2008
7144149 Homogenization valve Dec. 5, 2006
6702013 Multiport gate valve assembly for flow completion system Mar. 9, 2004
6453944 Multiport gate valve assembly Sep. 24, 2002
6416404 Air conditioner unit Jul. 9, 2002
6296059 Reverse circulating control valve Oct. 2, 2001
6164329 Generally T-shaped valve and valve assembly Dec. 26, 2000
6058956 Cycling self checking block valve May. 9, 2000
6029698 Air regulator valve for ventilated cage and rack system Feb. 29, 2000
6019137 Flexible pipe Feb. 1, 2000
6019130 Water run-out fitting Feb. 1, 2000
6016421 Conflict resolution in a multi-beam multi-site paging system Jan. 18, 2000
H1810 Valve assembly Nov. 2, 1999
5320140 Fluid valve systems Jun. 14, 1994
5313871 Hydraulic control system utilizing a plurality of branch passages with differing flow rates May. 24, 1994
5143120 Electromagnetic valve assembly Sep. 1, 1992
5135028 Remotely operated flow control system Aug. 4, 1992
5048577 Fuel dispensing vapor eliminating valve Sep. 17, 1991
4989637 Gas mixing apparatus Feb. 5, 1991
4962882 Ventilator Oct. 16, 1990
4909211 Barrel-type throttle valve for engine air intake Mar. 20, 1990
4803845 Controllable throttle for a vacuum pump Feb. 14, 1989
4742942 Foam producing malt beverage faucet May. 10, 1988
4698998 Pressure calibration systems and control valve assemblies Oct. 13, 1987
4643224 Alarm test device for a sprinkler system Feb. 17, 1987
4622999 Gas flow control system with pilot gas booster Nov. 18, 1986
4609011 Flow control valve Sep. 2, 1986
4565207 Method for proportioning fuel usage by a fluid fueled apparatus Jan. 21, 1986
4557185 Solenoid operated exhaust air damper Dec. 10, 1985
4531534 Spring-powered actuator Jul. 30, 1985
4496463 Duplex strainer Jan. 29, 1985
4466336 Control valve for hydraulic motor apparatus Aug. 21, 1984
4372196 Insulating and draft preventing automatic shutter for attic and other exhaust type fans Feb. 8, 1983
4368758 Device for controlling a steam or gas turbine Jan. 18, 1983
4310020 Processing chamber with an air flow reverser Jan. 12, 1982
4295486 Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator Oct. 20, 1981
4284132 Apparatus for conditioning air Aug. 18, 1981
4263930 Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator Apr. 28, 1981
4248257 Flood valve Feb. 3, 1981
4194535 Quick-closing multi-way valves Mar. 25, 1980

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