Valve

Details Valve Valve

1984-08-09

1985-07-23

Yeung, James C.

Valves and valve actuation

With means for blocking or disabling actuator

Attachments

251297, 251 92, 166319, 166323, E21B 3410

Patent

active

045304858

ABSTRACT:
A valve having a tubular body with a valve seat and valve member controlled by a valve operator with provisions for latching the valve operator with the valve member in partially open position utilizing a snap ring which is propped out into a groove in the body and provides a stop maintaining the valve partially open against a spring and in which the valve operator has a receiving groove which receives the snap ring and maintains it in an out-of-the-way position upon movement of the valve operator toward full valve-open position.

REFERENCES:
patent: 3070119 (1962-12-01), Raulins
patent: 3696868 (1972-10-01), Taylor, Jr.
patent: 3882935 (1975-05-01), Calhoun
patent: 3886967 (1975-06-01), Nelson
patent: 3896876 (1975-07-01), Crowe
patent: 3939913 (1976-02-01), Mott
patent: 4022273 (1977-05-01), Marathe
patent: 4276937 (1981-07-01), Calhoun et al.
patent: 4339001 (1982-07-01), Paschal, Jr.
patent: 4449587 (1984-05-01), Rodenberger et al.
patent: 4469179 (1984-09-01), Crow et al.

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