Gate valve

Details Gate valve Gate valve

1986-08-22

1988-03-15

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

92117A, 251 63, F16K 302, F16K 31128

Patent

active

047308060

ABSTRACT:
A gate valve (10) having a valve operator (40) fully contained within a valve body with means for communicating fluid under pressure to the valve operator (40) to move a gate (32) to a valve open or a valve closed position. The valve operator (40) is located within the gate chamber (30) and the gate (32) itself contains and forms part of the valve operator (40) and, thus, considerable space is conserved. In one embodiment, the means for communicating pressure fluid to the valve operator includes a manifold (16) to allow the valve body (12) to rotate as part of a drilling assembly yet be remotely controllable. In another embodiment, the manifold may be eliminated for the use of the valve does not require rotation.
This invention introduces gate valve technology into drilling operations to displace ball valves as kelly cock valves.

REFERENCES:
patent: 1273728 (1918-07-01), Burd
patent: 2148273 (1939-02-01), La Brie
patent: 2568092 (1951-09-01), Sloan et al.
patent: 3610569 (1971-10-01), Reaves
patent: 4010928 (1977-03-01), Smith
patent: 4456217 (1984-06-01), Winegeart et al.
patent: 4492359 (1985-01-01), Baugh
patent: 4647005 (1987-03-01), Hunter

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