Pfiras

Claim 1

A DEVICE FOR USE IN A VEHICLE TO CONTROL ELEMENTS SUCH AS SPEED GEAR BOXES, CLUTCH ENGAGEMENT MEANS, AND THE LIKE, AS A FUNCTION OF VARIOUS PARAMETERS OF WHICH AT LEAST ONE IS THE VELOCITY OF ROTATION OF A ROTARY SHAFT, COMPRISING IN COMBINATION A ROTARY SHAFT OF THE VEHICLE, AN ALTERNATING CURRENT GENERATOR DRIVINGLY CONNECTED TO SAID SHAFT AND HAVING AN OUTPUT CREST VOLTAGE WHICH IS A FUNCTION OF THE VELOCITY OF SAID SHAFT, A POTENTIOMETER CONNECTED ACROSS THE OUTPUT OF SAID GENERATOR AND HAVING AN ADJUSTABLE CONTACT, RECTIFIER CIRCUIT MEANS CONNECTED BETWEEN THE ADJUSTABLE CONTACT AND ONE TERMINAL OF SAID POTENTIOMETER, SAID RECTIFIER CIRCUIT MEANS INCLUDING AT LEAST ONE ZENER DIODE WHICH TRANSMITS ONLY CURRENT PEAKS CORRESPONDING TO THE CREST VOLTAGE GENERATED BY THE GENERATOR, A CONDENSER CONNECTED TO SAID RECTIFIER MEANS TO INTEGRATE SAID CURRENT PEAKS AND TO DEVELOP A RESULTANT CREST VOLTAGE THEREACROSS, A TRANSISTOR, MEANS TO APPLY SAID RESULTANT CREST VOLTAGE TO THE BASE OF THE TRANSISTOR, A BATTERY, A RELAY, MEANS CONNECTING THE EMITTER AND COLLECTOR OF THE TRANSISTOR TO THE TERMINALS OF SAID BATTERY THROUGH THE WINDING OF SAID RELAY, SAID RELAY HAVING A PAIR OF CONTACTS CLOSING RESPONSIVE TO ENERGIZATION OF THE RELAY, AND A CONTROL ELEMENT HAVING AN ENERGIZING CIRCUIT INCLUDING SAID CONTACTS, WHEREBY SAID CONTROL ELEMENT CAN BECOME ENERGIZED WHEN THE VELOCITY OF THE SHAFT EXCEEDS A PREDETERMINED VALUE.

Claim 2

A DEVICE FOR USE IN A VEHICLE TO CONTROL ELEMENTS SUCH AS SPEED GEAR BOXES, CLUTCH ENGAGEMENT MEANS, AND THE LIKE, AS A FUNCTION OF VARIOUS PARAMETERS OF WHICH AT LEAST ONE IS THE VELOCITY OF ROTATION OF A ROTARY SHAFT, COMPRISING IN COMBINATION A ROTARY SHAFT OF THE VEHICLE, AN ALTERNATING CURRENT GENERATOR DRIVINGLY CONNECTED TO SAID SHAFT AND HAVING AN OUTPUT CREST VOLTAGE WHICH IS A FUNCTION OF THE VELOCITY OF SAID SHAFT, A POTENTIOMETER CONNECTED ACROSS THE OUTPUT OF SAID GENERATOR AND HAVING AN ADJUSTABLE CONTACT, RECTIFIER CIRCUIT MEANS CONNECTED BETWEEN THE ADJUSTABLE CONTACT AND ONE TERMINAL OF SAID POTENTIOMETER, SAID RECTIFIER CIRCUIT MEANS INCLUDING AT LEAST ONE ZENER DIODE WHICH TRANSMITS ONLY CURRENT PEAKS CORRESPONDING TO THE CREST VOLTAGE GENERATED BY THE GENERATOR, A CONDENSER CONNECTED TO SAID RECTIFIER MEANS TO INTEGRATE SAID CURRENT PEAKS AND TO DEVELOP A RESULTANT CREST VOLTAGE THEREACROSS, A TRANSISTOR, MEANS TO APPLY SAID RESULTANT CREST VOLTAGE TO THE BASE OF THE TRANSISTOR, A BATTERY, A RELAY, MEANS CONNECTING THE EMITTER AND COLLECTOR OF THE TRANSISTOR TO THE TERMINALS OF SAID BATTERY THROUGH THE WINDING OF SAID RELAY, SAID RELAY HAVING A PAIR OF CONTACTS CLOSING RESPONSIVE TO ENERGIZATION OF THE RELAY, AND A CONTROL ELEMENT HAVING AN ENERGIZING CIRCUIT INCLUDING SAID CONTACTS, WHEREBY SAID CONTROL ELEMENT CAN BECOME ENERGIZED WHEN THE VELOCITY OF THE SHAFT EXCEEDS A PREDETERMINED VALUE.