US PATENT SUBCLASS 251 / 129.04
.~ Remote or follow-up control system for electrical actuator


Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

129.01  DF  ELECTRICALLY ACTUATED VALVE {11}
129.04.~ Remote or follow-up control system for electrical actuator


DEFINITION

Classification: 251/129.04

Remote or follow-up control system for electrical actuator:

(under subclass 129.01) Subject matter wherein an electrical control system is provided for controlling the valve actuator, which control system is either: (a) an electrical system including means interposed between an operator control station which is far removed from the valve actuator or (b) an arrangement such that movement of a control member will result in an equal or proportional movement of a controlled member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41, for remote control of choked pressure type servo-motor valve actuators.

57, for fluid link type remote actuators for valves, and see the search notes to these subclasses.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

560+, for electric motor position servomechanism; appropriate subclasses for remotely controlled electric motors.