Valve actuator

Details Valve actuator Valve actuator

F - Mech Eng,Light,Heat,Weapons

16

H

251/20

F16H 1/16 (2006.01) F16D 21/06 (2006.01) F16D 27/118 (2006.01) F16K 31/05 (2006.01)

Patent

CA 1098503

VALVE ACTUATOR Abstract of the Disclosure. 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, mag- netic motor engagement and disconnect means, and resilient torque sensing means for shutting off power to the motor. 1a

300267

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