(under subclass 69) Subject matter provided with means to apply a braking force to the motor.
(1) Note. In many of the systems in this subclass when the motor energizing circuit is opened after the electrodes have been moved to or almost to the proper position, an impedance in the system then acts as a load upon the motor, which is then acting as a generator, whereby the motor is dynamically braked.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71, and 72, for systems under subclass 69 which include means for changing the impedance of the circuit supplying current to the motor for purposes other than dynamic braking.
74, for systems under subclass 69 provided with means for varying the operating characteristics of an electric switch placed in the motor circuit.
75, for systems under subclass 69 where the motor is supplied from a source of current which is separate from the current supply for the discharge.
SEE OR SEARCH CLASS 318, Electricity: Motive Power Systems,
