Reversal of direction of power flow changes power transmission to alternate path:
(under subclass 640) Subject matter having two alternately usable parallel power transmitting paths between a single input and a single output so arranged that (1) the interchange of the input and output relationship or (2) the
change of direction of rotation of the input, changes the path through which the power is transmitted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6, and see the notes thereto for mechanical movements or gearing for initiating the starting of a machine.
352+, for change speed gearing including gears movable laterally with respect to the longitudinal axis of the transmission into mesh with a cooperating gear.
SEE OR SEARCH CLASS
475, Planetary Gear Transmission Systems or Components,
12+, for planetary gearing utilized to perform this function.