(under subclass 68) Subject matter in which means are provided for controlling the armature or primary circuit of one or more of the motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41+, for plural motor systems having synchronizing interconnections between the motors so that the armature of one motor may be supplied with energy from the other motor when the speed ratio varies.
79, for this subject matter where the system includes armature circuit control combined with field circuit control.
82+, for plural motor systems having means for controlling the (group) speed of the plurality of electric motors by controlling the armature or primary circuits.
94+, for plural motor systems having armature circuit control means for controlling the acceleration and/or deceleration of a plurality of electric motors.
494+, and the subclasses specified in the search notes thereto, for motor systems having means for controlling the armature circuits.
