Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1990-08-16
1991-12-24
Fox, John C.
Fluid handling
Systems
Flow path with serial valves and/or closures
2511499, F16L 2900
Patent
active
050743325
ABSTRACT:
One end section of a three section tubular coupling body is connected to a flexible hose, and the opposite end section supports a manually actuated coupler for releasably locking the body to a valve fitting of an air conditioning or refrigeration system. A valve member is supported within the body for axial movement between an extended open position and a retracted closed position. In its extended position, the valve member opens a valve stem within the fitting and opens a flow valve within the body. In its retracted position, the valve member closes the fitting valve and the flow valve. A manually actuated lever is connected by rotary cam members to move the valve member and is effective to block disconnection of the coupler when the valve member is in its extended open position and to lock the valve member in its retracted closed position.
REFERENCES:
patent: 2887124 (1959-05-01), Mell
patent: 2901008 (1959-08-01), Cavett et al.
patent: 3295553 (1967-01-01), Garrett et al.
patent: 3301272 (1967-01-01), Pettyjohn et al.
patent: 3348575 (1907-10-01), Simak
patent: 3407847 (1968-10-01), Snyder
patent: 4676269 (1987-06-01), Sarson
Fox John C.
Production Control Units, Inc.
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