(under the class definition) Apparatus having means for
moving the load normally driven by the working member by a human operator in the absence of operation of the motor.
(1) Note. When the load is moved manually the motor working member may also move due to the application of the manual force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
368+, for follower type working member position feedback controls which generally provide for movement of the load when motive fluid is not available to operate the motor by engagement of the valve parts on extreme travel of such parts and without other means to facilitate manual actuation. Patents in which such means is provided have been cross referenced to this subclass 391.
