Electric motor braking control system

Claim 1

APPARATUS OF THE CHARACTER DESCRIBED FOR OPERATION AND CONTROL OF A SINGLE PHASE INDUCTION MOTOR ADAPTED TO BE ENERGIZED FROM A SINGLE PHASE VOLTAGE SOURCE, SAID MOTOR HAVING FIRST AND SECOND WINDINGS, SAID APPARATUS COMPRISING A FIRST CIRCUIT FOR IMPRESSING THE SOURCE VOLTAGE ON SAID WINDINGS, SAID FIRST CIRCUIT INCLUDING A CAPACITOR IN SERIES WITH THE SECOND WINDING FOR SHIFTING THE PHASE OF A.C. VOLTAGE IMPRESSED ON THE SECOND WINDING, A SECOND CIRCUIT BYPASSING THE CAPACITOR AND INCLUDING RECTIFYING MEANS CONNECTED DIRECTLY TO SAID WINDINGS AROUND THE CAPACITOR, AND SWITCHING MEANS FOR SELECTIVELY ENERGIZING THE WINDINGS THROUGH SAID FIRST CIRCUIT FOR RUNNING THE MOTOR AND THROUGH SAID SECOND CIRCUIT FOR BRAKING THE MOTOR, SAID RECTIFYING MEANS COMPRISING TWO RECTIFIERS CONNECTED IN OPPOSING RELATION WITH RESPECT TO SAID FIRST CIRCUIT WHEREBY SAID SECOND CIRCUIT IS INOPERATIVE WHEN SAID FIRST CIRCUIT IS OPERATIVE.