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Class Information
Number: 137/637.1
Name: Fluid handling > Systems > Valves with separate, correlated, actuators > Interlocked
Description: Devices having plural actuators with interlocking means therebetween, whereby the actuation of one valve is prerequisite to the actuation of another or additional valves, or whereby the opening of one valve precludes the opening of another until such time as the first opened valve has been closed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
4535811 Air flow control apparatus Aug. 20, 1985
4523886 Container handler with programmed electro-hydraulic control circuit Jun. 18, 1985
4493318 Locking mechanism for use with two anesthetic evaporators Jan. 15, 1985
4463754 Safety control and lock for anesthetic vaporizers Aug. 7, 1984
4458706 Block and bleed valve system Jul. 10, 1984
4434790 Vaporizer subsystem for an anesthesia machine Mar. 6, 1984
4429711 Multivalve manifold interlock and control system Feb. 7, 1984
4398861 Maneuvering portion structure of an excavation work vehicle Aug. 16, 1983
4386625 Fuel transfer valve Jun. 7, 1983
4351327 Device for connection to a respiratory gas line Sep. 28, 1982
4347833 Pressure cooking device with exhaust and drain valves Sep. 7, 1982
4346701 Gas administration apparatus Aug. 31, 1982
4345622 Control and cut-off device for flowing media Aug. 24, 1982
4340077 Method of and apparatus for remotely controlling orifice-opening and orifice-closing operations Jul. 20, 1982
4330013 Valve safety indicating means May. 18, 1982
4327599 Blocking mechanism May. 4, 1982
4307718 Vaporizer interlock Dec. 29, 1981
4289163 Vent valve for a mobile tank Sep. 15, 1981
4262554 Hydraulic valve system for controlling particularly a vehicle gearbox Apr. 21, 1981
4249563 Manifold for replacing relief valves Feb. 10, 1981
4245760 Container with built-in probe assembly and coupling head assembly therefor Jan. 20, 1981
4246115 Multi-valve interlock apparatus Jan. 20, 1981
4243072 Three position selector valve Jan. 6, 1981
4195667 Solenoid valve with safety control circuit Apr. 1, 1980
4188976 Multiple dental handpiece control system Feb. 19, 1980
4182483 Fluid actuated damper control apparatus Jan. 8, 1980
4181152 Control manifold Jan. 1, 1980
4131126 Mechanical actuating means for hydraulic control valves Dec. 26, 1978
4112824 Double-hydraulic actuator Sep. 12, 1978
4101100 Aircraft flight line servicing system Jul. 18, 1978
4081235 Valve interlock Mar. 28, 1978
4080989 Tube connector for fluid container Mar. 28, 1978
4064851 Servo controlled exhaust gas recycle system Dec. 27, 1977
4040457 Automatic opening of juice outflow conduit in response to detection of container, without physical contact Aug. 9, 1977
4033379 Pneumatic valve interlock system Jul. 5, 1977
4015308 Vacuum bleed system for a vacuum cleaner or the like Apr. 5, 1977
3991788 Fluid flow distributor for multi-choice vending machine Nov. 16, 1976
3973595 Arrangement for actuating mechanically independent valves in a pressure fluid system Aug. 10, 1976

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