Series-parallel Connected Motors Patents (Class 318/111)
  • D. C. Motor control system effecting changes in the connections of the armature and variations in current flow through the field
    Patent number: 3938013
    Abstract: A d.c. motor control system includes a pair of armature windings mounted on a single rotor or on a pair of mechanically coupled rotors, and a field winding or windings. The system includes switch means operable to effect a change in the electrical connections of the armature windings to a pair of electrical supply terminals and means for effecting variations of the current flowing in the field winding or windings.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: February 10, 1976
    Assignee: C.A.V. Limited
    Inventors: Alec Harry Seilly, Kenneth Clive Scott, Kenneth Leslie Driver