Ringing trigger means for flip-flop

Claim 1

APPARATUS FOR SWITCHING AN ACTIVE CIRCUIT ELEMENT HAVING A TWO-TERMINAL INPUT CIRCUIT FROM A FIRST STATE TO A SECOND STATE COMPRISING: INPUT MEANS PROVIDING A FIRST VOLTAGE PULSE HAVING A PREDETERMINED PULSE WIDTH AND A POLARITY OPPOSITE THAT NECESSARY TO SWITCH SAID ACTIVE CIRCUIT ELEMENT FROM SAID FIRST STATE TO SAID SECOND STATE; AND RESONANT DIFFERENTIATING MEANS WHICH RESONATES AT A FREQUENCY THE PERIOD OF WHICH IS APPROXIMATELY DOUBLE THE DURATION OF SAID VOLTAGE PULSE, FOR PRODUCING ONLY ONE PULSE HAVING A POLARITY OPPOSITE THE POLARITY OF SAID FIRST PULSE AFTER THE TERMINATION OF SAID FIRST PULSE, OF SWITCHING MAGNITUDE FOR SAID ACTIVE CIRCUIT ELEMENT, AND WHICH COMPRISES A SERIES NETWORK INCLUDING INDUCTANCE MEANS, A CAPACITOR CONNECTED DIRECTLY TO SAID INDUCTANCE MEANS AT ONE END AND RESISTANCE DAMPING MEANS; SAID INPUT MEANS BEING ELECTRICALLY CONNECTED ACROSS SAID CAPACITOR AND SAID INDUCTANCE MEANS, AND SAID INDUCTANCE MEANS BEING ELECTRICALLY CONNECTED ACROSS THE INPUT CIRCUIT OF SAID ACTIVE ELEMENT.