Valve actuator having a rotary bi-directional apparatus with a d

Details Valve actuator having a rotary bi-directional apparatus with a d Valve actuator having a rotary bi-directional apparatus with a d

1983-12-07

1985-09-17

Staab, Lawrence J.

Machine element or mechanism

Mechanical movements

Oscillation or reciprocation to intermittent unidirectional...

74151, F16H 2702, F16K 3152

Patent

active

045412952

ABSTRACT:
A rotary bi-directional valve actuator having a new and improved dual ratchet mechanism. The linkage maintains the pawl disengaged or uncoupled from the drive bushing until operated to protect the ratchet mechanism and to prevent its binding or jamming. The disengagement of the mechanism compensates for inadvertent rotational movement of the valve stem which could result in malfunction or damage to the actuator when actuated. The actuator is extremely rugged and durable in construction for a long operating life. The simplified construction of the actuator is also easy to maintain and easy access to the working parts is provided by the sealed housing.

REFERENCES:
patent: 1541876 (1925-06-01), Victorsohn
patent: 4180238 (1979-12-01), Muchow

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