(under the class definition) Apparatus comprising a working member and a rigid power transmission element positioned for movement therewith, said element being unsecured to the working member (i.e., capable of movement with respect thereto) and adapted to be abutted thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51+, for a concentric arrangement of tubular members, including a working member said members being in sealed relatively sliding relationship, and in which said working member moves one of the other members through separating abutment surfaces.
62+, for plural coaxial relatively movable working members in which one working member is moved by a second working member through separating abutment surfaces.
101, for an abutment connection between a flexible diaphragm type working member and a relatively movable undistortable member.
SEE OR SEARCH CLASS 251, Valves and Valve Actuation,
63.4, for an expansible chamber valve actuator having a lost motion or abutment connection between the actuator and the valve.
