Electric supervising means

Claim 1

MEANS FOR INITIATING A PREDETERMINED CONTROL FUNCTION IN DELAYED RESPONSE TO THE OCCURANCE OF AN ABNORMAL CONDITIN IN AN ELECTRIC CURRENT CIRCUIT, THE AMOUNT OF DELAY BEING INVERSELY REALTED TO THE SEVERITY OF THE ABNORMAL CONDITION, COMPRISING: CONDITIN RESPONSIVE MEANS ADAPTED TO BE COUPLED TO THE CIRCUIT FOR DERIVING THEREFROM A D.-C. SIGNAL HAVING A MAGNITUDE WHICH ID DEPENDENT UPON THE VALVE OF CHARACTERISTIC ELECTRIC QUANTITY OF THE CIRCUIT; A PULSATING SIGNAL SOURCE FOR SUPPLYING A SUCCESSION OF TRIANGULAR-WAVEFORM SIGNAL PULSES; ADDING MEANS CONNECTED TO SAID CONDITION RESPONSIVE MEANS AND TO SAID PULSATING SIGNAL SOURCE FOR PORVIDING A RESULTANT SIGNAL CORRESPONDING TO THE SUM OF THE D.-C. AND PULSATING SIGNALS; MEANS ASSOCIATED WITH SAID ADDING MEANS FOR INTRODUCING, IN SUBTRACTIVE RELATIONSHIP WITH THE RESULTANT SIGNAL, A UNIPOLARITY REFERENCE SIGNAL LEVEL EQUIVALENT TO THE PEAK MAGNITUDE OF THE PULSATING SIGNAL; ELECTRIC ENERGY STORING MEANS, INCLUDIGN A REACTANCE ELEMENT, CONNECTED IN SAID ADDING MEANS FOR ENERGIZATION IN ACCORDANCE WITH THE DIFFERENCE BETWEEN THE RESULTANT SIGNAL MAGNITUDE AND THE REFERENCE SIGANL LEVEL WHENEVER THE FORMER EXCEEDS THE LATTER; SUPERVISING MEANS ASSOCIATED WITH SAID REACTANCE ELEMENT FOR NORMALLY PREVENTING THE ACCUMULA-