Lift-turn valve and actuator assembly

Details Lift-turn valve and actuator assembly Lift-turn valve and actuator assembly

1978-07-20

1980-11-18

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Plural operations

251215, 251229, F16K 31528, F16K 3100

Patent

active

042341574

ABSTRACT:
A lift-turn valve and actuator mechanism incorporating a valve plug and slip assembly that is movable with both axial and rotatable components of movement during opening and closing. Rotational movement is accomplished during lifting by cooperative relationship between opposed cam grooves defined in valve stem means and a pair of opposed rotatable cam follower elements that are supported by an actuator housing. The actuator housing is a fabricated structure incorporating threaded structure for receiving replaceable cam follower bearing mechanisms. The cam follower elements cooperate with the opposed cam grooves to provide efficient balanced force transfer through the valve actuator mechanism.

REFERENCES:
patent: 1890524 (1932-12-01), Martin, Jr.
patent: 2953344 (1960-09-01), Yancey
patent: 3046802 (1962-07-01), Cupedo
patent: 3078065 (1963-02-01), Vickery
patent: 3298659 (1967-01-01), Cupedo
patent: 3542331 (1970-11-01), Canalizo
patent: 3770247 (1973-11-01), Nelson
patent: 3793893 (1974-02-01), Heinen
patent: 4120479 (1978-10-01), Thompson et al.
patent: 4120479 (1978-10-01), Thompson et al.

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