(under the class definition) Subject matter in which means are provided for effecting, or for controlling the dissipation of magnetic energy stored in magnetic circuit of the field or secondary winding of an electric motor.
(1) Note. Such means include means for reducing the tendency toward the generation of high potentials in the field winding circuit due to the collapse of the magnetic field flux when the field circuit is opened.
SEE OR SEARCH THIS CLASS, SUBCLASS:
379, for motor systems having means for locally closing the armature circuit of an electric motor for dynamic braking purposes, which may incidentally provide for dissipation of magnetic energy stored in the armature or primary winding circuit.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
104, for systems including electromagnets or other highly inductive devices. 361, Electricity: Electrical Systems and Devices,
212, for means for discharging static electrical charges in general, and subclass 123 for electric circuits for electromagnets in general, in which means may be provided for dissipating the stored magnetic energy.