Temperature protection circuit

Claim 1

IN COMBINATION A MOTOR HAVING A WINDING, A SOURCE OF ALTERNATING CURRENT ELECTRICAL ENERGY FOR ENERGIZING SAID WINDING, MEANS FOR DEENERGIZING SAID WINDING WHEN THE TEMPERATURE OF SAID WINDING BECOMES EXCESSIVE UNTIL AFTER SAID WINDING HAS COOLED TO A TEMPERATURE WHERE SAID MOTOR CAN BE RESTARTED EFFECTIVELY, SAID WINDING DE-ENERGIZING MEANS COMPRISING A THERMISTOR EMBEDDED DIRECTLY IN SAID WINDING, A BISTABLE AMPLIFIER HAVING AN INPUT CONNECTED TO SAID THERMISTOR, A FREE RUNNING OSCILLATOR COUPLED TO THE OUTPUT OF SAID AMPLIFIER OPERABLE TO PRODUCE A TRIGGERING OUTPUT SIGNAL AT A FREQUENCY GREATLY IN EXCESS OF THE FREQUENCY OF SAID SOURCE, AND A FULL-WAVE SWITCHING DEVICE CONNECTED BETWEEN SAID WINDING AND SAID SOURCE AND ALSO COUPLED TO SAID OSCILLATOR FOR CONDUCTION INITIATED BY SAID TRIGGERING OUTPUT SIGNAL OF SAID OSCILLATOR, SAID AMPLIFIER HAVING FIRST AND SECOND STABLE CONDITIONS, BIASING MEANS FOR SAID AMPLIFIER INPUT INCLUDING FEEDBACK MEANS COUPLED BETWEEN THE OUTPUT AND INPUT OF SAID AMPLIFIER AND INCLUDING SAID THERMISTOR FOR SWITCHING SAID AMPLIFIER FROM SAID FIRST STABLE CONDITION TO SAID SECOND STABLE CONDITION WHEN THE TEMPERATURE OF SAID WINDING REACHES SAID EXCESSIVE TEMPERATURE AND FOR SWITCHING SAID AMPLIFIER FROM SAID SECOND STABLE CONDITION TO SAID FIRST STABLE CONDITION WHEN THE TEMPERATURE OF SAID WINDING RECEDES TO SAID RESTART TEMPERATURE.