(under subclass 11) Subject matter in which the variable speed transmission is mechanical gearing provided with means for producing two or more output speeds when the input or receiving element thereof is being driven at a single speed.
(1) Note. For a definition of "mechanical gearing", see (1) Note under subclass 15, hereinafter.
(2) Note. See the combination of an electric motor system of the type classifiable in the class definition, for a reference to the electric motor driven gearing in this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15, for miscellaneous electric motor driven mechanical gearing within the class definition. See Note 1 above.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism, 640+, for the structure of the variable speed gearing, per se.
310, Electrical Generator or Motor Structure,
83, for gear drives for electrical generators or motors.
475, Planetary Gear Transmission Systems or Components, appropriate subclasses for variable speed planetary gearing.
