Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1978-02-06
1980-04-29
Schwadron, Martin P.
Fluid handling
Systems
Flow path with serial valves and/or closures
2511496, 137614, F16L 2900, F16L 3728
Patent
active
042001218
ABSTRACT:
A quick-closure coupling for hydraulic lines in which two insertable coupling halves are lockable in a coupling position, and are constructed in the form of a plug valve and a sleeve valve, each having a closure piece. The closure piece is spring loaded in the closure direction, and held in a closed position when the coupling halves are separated. One of the coupling halves is provided with a stop which restricts a valve stroke of the closure piece in the opening position. The other coupling half has the closure piece loaded with a stronger spring and has a valve stroke equal to twice the opening stroke of the other closure piece. One of the coupling halves has a closure piece which can execute the opening stroke, and has a locking device which is ready to lock due to axial displacement of the closure piece beyond a single opening stroke. After returning the closure piece to its opening position corresponding to the single valve stroke, the locking device reaches a stop position restricting the valve stroke to this opening position. But the locking device is moved back during disconnection of the coupling halves to its release position, permitting thereby a double valve stroke. The locking device may be in the form of a stop spring loaded in a direction of its locking position.
REFERENCES:
patent: 2637572 (1953-05-01), Bruce
patent: 2706646 (1955-04-01), Olson
patent: 2735696 (1956-02-01), Omon et al.
patent: 3236251 (1966-02-01), Hansen
patent: 3348575 (1967-10-01), Simak
patent: 3367366 (1968-02-01), Oliveau et al.
patent: 3791411 (1974-02-01), Bogeskov et al.
Portele Ludwig
Walter Friedrich C.
Argus Gesellschaft mbH
Chambers A. Michael
Fogiel Max
Schwadron Martin P.
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