Valves and valve actuation – Fluid actuated or retarded – Fluid and non-fluid actuators
Patent
1979-05-14
1980-12-16
Rosenthal, Arnold
Valves and valve actuation
Fluid actuated or retarded
Fluid and non-fluid actuators
74 8915, F16K 3152, F16K 3114
Patent
active
042391784
ABSTRACT:
A manual actuator for a motor driven control valve has a fork-shaped lever-type actuating means pivotally mounted on a single valve motor support stud passing between the legs of the fork-shaped actuating means. One end of the legs of the fork-shaped actuating means is formed as a cam surface to transmit a valve actuating force to a cam support attached to a valve stem driven by the valve motor. The other end of the legs of the actuating means are each rotatably attached to respective external trunnions on an internally threaded nut threaded on a threaded control rod. One end of the control rod is attached to a handwheel while the other end of the control rod is held in a ball and socket connection supported on the valve stud and spaced from the pivot for the actuating means.
REFERENCES:
patent: 1648710 (1927-11-01), Wright
patent: 2319336 (1943-05-01), McCullough
patent: 3198034 (1965-08-01), DeWitte et al.
Engel Hans O.
Lueneburg Wolfgang
Burton Lockwood D.
Halista Mitchell J.
Honeywell Inc.
Marhoefer Laurence J.
Rosenthal Arnold
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