Electroresponsive controls

Claim 1

AN ELECTRORESPONSIVE SWITCHING NETWORK FOR A SYSTEM TO BE SELECTIVELY DEACTIVATED, WHICH SYSTEM INCLUDES MEANS FOR SUPPLYING AN ELECTRICAL VOLTAGE INDICATIVE OF SYSTEM OPERATION AND CONTROL MEANS FOR DEACTIVATING SUCH SYSTEM IN RESPONSE TO A CONTROL SIGNAL, AND ACTIVATING THE SYSTEM IN RESPONSE TO A SECOND CONTROL SIGNAL, THE IMPROVEMENT INCLUDES, IN COMBINATION: CONTROLLING VOLTAGE SUPPLY MEANS ADAPTED TO RECEIVE CURRENT WHEN A VOLTAGE AMPLITUDE APPLIED THERETO EXCEEDS A CERTAIN THRESHOLD AND TO SUPPLY CURRENT WHEN SUCH VOLTAGE APPLIED IS BELOW SUCH THRESHOLD; AND AN ELECTRORESPONSIVE NETWORK INCLUDING, IN COMBINATION: VOLTAGE COMPARISON MEANS HAVING AN INTERNAL INPUT CONNECTED TO THE SYSTEM VOLTAGE SUPPLY MEANS, AND AN EXTERNAL INPUT CONNECTED TO SAID CONTROLLING VOLTAGE SUPPLY MEANS FOR SUPPLYING AND RECEIVING CURRENT THEREFROM, AND A CONTROL OUTPUT CONNECTED TO THE CONTROL MEANS AND BEING RESPONSIVE TO SIGNALS ON SAID INPUTS SUCH THAT AN OUTPUT SIGNAL IS PROVIDED ON THE CONTROL OUTPUT INDICATIVE OF THE RELATIONSHIP OF THE VOLTAGES ON SAID INPUTS, A UNILATERAL CURRENT CONDUCTING DEVICE CONNECTING THE INPUTS AND ARRANGED TO CONDUCT CURRENT FROM ONE INPUT TOWARDS ANOTHER INPUT AND TO BLOCK CURRENT TENDING TO FLOW TOWARDS SAID ONE INPUT FROM SAID ANOTHER INPUT, SAID COMPARISON MEANS BEING OPERATIVE TO SUPPLY THE FIRST SIGNAL FOR CAUSING THE CONTROL MEANS TO DEACTIVATE THE SYSTEM WHENEVER A VOLTAGE ON SAID EXTERNAL INPUT HAS A MAGNITUDE RELATIONSHIP TO A VOLTAGE ON SAID INTERNAL INPUT INDICATIVE THAT THE SYSTEM IS TO BE DEACTIVATED AND FURTHER HAVING A HYSTERESIS CHARACTERISTIC SUCH THAT THE SYSTEM WHEN DEACTIVATED IS NOT SUPPLIED TO THE SECOND SIGNAL AND REACTIVATED UNTIL THE VOLTAGE MAGNITUDE ON THE INPUTS HAVE A RELATIONSHIP DIFFERENT THAN THAT REQUIRED FOR DEACTIVATING AN ACTIVE SYSTEM, AND WHEN SAID SYSTEM IS DEACTIVATED THE UNILATERAL DEVICE IS NON-CONDUCTIVE FOR ISOLATING SAID VOLTAGE SUPPLY MEANS ONE FROM THE OTHER.