Valve actuator

Details Valve actuator Valve actuator

1977-04-04

1978-09-19

Wyche, Benjamin W.

Machine element or mechanism

Gearing

Directly cooperating gears

251133, 74425, 192 482, 192150, F16H 116

Patent

active

041144694

ABSTRACT:
An automatic motorized valve actuator is disclosed which features a worm gear drive assembly for receiving high rotational motion of a drive motor and reducing it to the low speed linear or rotational motion of a valve stem. A coaxial alignment of the motor shaft, the worm gear shaft and a manual operator shaft eliminates the need for a separate shifting assembly for shifting from motorized to manual operating mode. The invention further discloses clutches for operationally connecting the various shafts, a sliding lockout rod assembly for preventing simultaneous engagement of manual and motor operating modes, magnetic motor engagement and disconnect means, and resilient torque sensing means for shutting off power to the motor.

REFERENCES:
patent: 2694320 (1954-11-01), Kron

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