(under the class definition) Subject matter in which means are provided for controlling the armature or primary circuit of the motor and also for controlling the field or the secondary circuit of the motor.
(1) Note. The above means may include a single control means (e.g., potentiometer type rheostat connected so as to be simultaneously in the field circuit and the armature circuit of a motor) or it may include a separate control means in each of the circuits of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
78, for plural motor systems having combined armature or primary circuit control for running-speed control.
92, for plural motor systems having combined armature or primary circuit control with field or secondary circuit control for acceleration control.
153, and the subclasses specified in the Notes thereto for motor systems having combined control of the generator and of the motor in a generator-fed motor systems, including such systems having control of the field or secondary circuit of the motor. 215, and the subclass specified in the Notes thereto for motor systems having combined primary and secondary circuits control for an induction motor systems.
527, for motor systems having means for connecting one or more circuit windings in series with the armature or primary circuit.
700, and 705, and the subclass specified in the Note to the definition of that subclass for motor systems having combined armature or primary control and field circuit control for a synchronous motor.
SEE OR SEARCH CLASS
322, Electricity: Single Generator Systems,
45, for combined control of the armature or primary circuit and the field circuit of electric generators.
388, Electricity: Motor Control Systems,
801+, 803+ and 826+ for single motor running-speed control systems; and subclasses 843 and 849+ for single motor acceleration control systems; wherein the energization of a field winding, or of both a field winding and an armature winding, is controlled.
