Valve couplers designed to allow their connection despite the pr

Details Valve couplers designed to allow their connection despite the pr Valve couplers designed to allow their connection despite the pr

1986-05-21

1987-10-27

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

137614, 2511496, F16L 3728

Patent

active

047022787

ABSTRACT:
A coupling device for receiving and retaining a coupling piece allowing coupling with pressure in the piece coupled while also providing flow checking to prevent unintended closing of the coupled valves. The device includes first and second joined tubular pieces axially movable with respect to each other between a receiving position for receiving a coupling piece and a retaining position for retaining a coupling piece. A valve is movable in the coupling piece between a closed position, an open position and a position past open allowing coupling to a coupling piece with fluid pressure therein. A stop is responsive to the receiving and retaining positions of the tubular pieces so that only when the pieces are in a receiving position can the valve move from an open position to a position past open. The stop is preferably a shoulder on a stem of the valve which engages the leading edge of a collet actuated by a sleeve. The sleeve is disposed between the valve stem and the second tubular piece.

REFERENCES:
patent: 3791411 (1974-02-01), Bogeskov et al.
patent: 4200121 (1980-04-01), Walter et al.
patent: 4288113 (1981-09-01), Saulnier
patent: 4394874 (1983-07-01), Walter
patent: 4398561 (1983-08-01), Maldavs

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