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Class Information
Number: 137/614
Name: Fluid handling > Systems > Flow path with serial valves and/or closures > Separable flow path section, valve or closure in each
Description: Systems in which the flow path includes joined, disconnectible, sections; one of the valves, flow controllers or closures being retained with each section.

Sub-classes under this class:

Class Number Class Name Patents
137/614.01 Common joint and valve seat faces, or sections joined by closing members 56
137/614.06 Coupling interlocked with valve, or closure or actuator 185
137/614.02 Each valve and/or closure operated by coupling motion 63
137/614.05 Valve- or closure-operated by coupling motion 242

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
4667883 Butterfly valve for fluid flow line May. 26, 1987
4602658 Chemical agent and waterproof connector for liquid conditions suit interface Jul. 29, 1986
4586537 Emergency disconnector for fluid loading and unloading lines May. 6, 1986
4583711 Rigid mount coupler with flow check stop Apr. 22, 1986
4566489 Quick disconnect coupling apparatus Jan. 28, 1986
4543992 Fluid coupling assembly Oct. 1, 1985
4543993 Positive locking connector Oct. 1, 1985
4519411 Emergency disconnector for fluid loading and unloading lines May. 28, 1985
4499932 Separable couplings for containers Feb. 19, 1985
4479511 One-man brake check valve and coupler assembly Oct. 30, 1984
4416305 Valved coupling for conduits Nov. 22, 1983
4398561 Quick disconnect coupling with locked valving Aug. 16, 1983
4350181 Valve coupling member Sep. 21, 1982
4344455 Coupling assembly Aug. 17, 1982
4335747 Connecting device for conduits Jun. 22, 1982
4274454 Method and apparatus for sealing containers Jun. 23, 1981
4274441 Connection coupling connectable under pressure Jun. 23, 1981
4269226 Universal breakaway coupling May. 26, 1981
4252021 Fluid sampling device Feb. 24, 1981
4214614 Valve means for preventing fuel spillage from the discharge spout of a fuel dispensing nozzle Jul. 29, 1980
4200121 Quick-closure coupling for hydraulic lines Apr. 29, 1980
4089341 Connector method and apparatus for coupling two systems together while excluding the environment from the system interiors May. 16, 1978
4078578 Beverage dispensing valve Mar. 14, 1978
4078577 Pressure control valve and coupling Mar. 14, 1978
4004611 Swinging spherical gate valve and double seal quick disconnect coupling Jan. 25, 1977
3994316 Pressure control valve and coupling Nov. 30, 1976
3976099 Multiple-passage, quick-disconnect coupling Aug. 24, 1976
3971405 Pressure controlled hydrant valve coupler Jul. 27, 1976

1 2 3 4

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