(under subclass 391) Device in which the stop moves in unison with the tool or tool support throughout at least a portion of the tool stroke.
(1) Note. In order to move in unison with the tool or tool support, the stop must move in the same path as the tool (or parallel thereto) and at the same speed and simultaneously with the tool movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383+, for work clamp moved by direct impact of tool or tool support.