(under subclass 24) Subject matter in which a sensed condition of operation controls a power operated means to initiate, modify, or terminate the advance or axial pressure of a tool upon the formation.
(1) Note. For the meaning of "advance" see the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51, for self acting cyclic advance and retraction of a tool or tool shaft.
114, for means to simultaneously feed and rotate a tool from a single mechanical movement, including a means to permit a constant rotation rate regardless of release of feed force or change in feed rate.
SEE OR SEARCH CLASS
173, Tool Driving or Impacting, 4+, for automatic control of a power operated tool advance causing or controlling means.
408, Cutting by Use of Rotating Axially Moving Tool,
