(under subclass 103) Apparatus including a dynamic power transmission means which comprises an endless flexible member to transmit rotary or oscillatory motion from a prime mover to a tool.
SEE OR SEARCH CLASS
408, Cutting by Use of Rotating Axially Moving Tool,
128, for belt and pulley driven drilling apparatus.
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses for an endless belt power transmission; and particularly
58+, for a system wherein a power output pulley is selectively shiftable to different power output locations relative to an input pulley.