Charge terminating circuits

Claim 1

THE IMPROVEMENT OF BATTERY CHARGING MEANS COMPRISING A SOURCE OF CHARGING VOLTAGE, A DIFFERENTIAL RELAY HAVING A PAIR OF OPPOSED WINDINGS AND RELAY CONTACTS ASSOCIATED WITH SAID WINDINGS, SAID RELAY CONTACTS BEING CONNECTED IN CIRCUIT WITH SAID SOURCE OF CHARGING VOLTAGE UPON ENERGIZATION OF ONE OF SAID OPPOSED WINDINGS, CYCLICALLY OPERATED SWITCH MEANS HAVING A PLURALITY OF SWITCH CONTACTS, A FIRST PAIR OF SAID SWITCH CONTACTS CONNECTED BETWEEN SAID RELAY CONTACTS, SAID SOURCE OF CHARGING VOLTAGE AND THE BATTERY TERMINALS FOR APPLYING THE CHARGING VOLTAGE TO THE BATTERY DURING A PORTION OF THE SWITCH CYCLE AND FOR REMOVING THE SOURCE OF CHARGING VOLTAGE FROM THE BATTERY DURING THE RAMAINDER OF THE SWITCH CYCLE, A VOLTAGE RESPONSIVE DEVICE, A SECOND PAIR OF SAID SWITCH CONTACTS CONNECTED BETWEEN SAID VOLTAGE RESPONSIVE DEVICE AND THE BATTERY FOR CONNECTING THE BATTERY TO THE VOLTAGE RESPONSIVE DEVICE DURING THE PORTION OF THE SWITCH CYCLE WHEN THE SOURCE OF CHARGING VOLTAGE IS REMOVED FROM THE BATTERY WHEREBY THE VOLTAGE RESPONSIVE DEVICE IS RESPONSIVE TO THE OPEN CIRCUIT VOLTAGE OF THE BATTERY, FIRST SWITCH MEANS OPERATIVELY ASSOCIATED WITH SAID VOLTAGE RESPONSIVE DEVICE FOR AUTOMATICALLY TERMINATING THE CHARGING OPERATION OF SAID BATTERY WHEN THE OPEN CIRCUIT VOLTAGE OF THE BATTERY EXCEEDS A PREDETERMINED VALUE, AND SECOND SWITCH MEANS CONNECTED IN PARALLEL WITH SAID SECOND SWITCH FOR AUTOMATICALLY TERMINATING THE CHARGING OPERATION OF SAID BATTERY IN RESPONSE TO THE OCCURENCE OF A PREDETERMINED EVENT, SAID FIRST AND SECOND SWITCH MEANS EACH SERVING UPON ACTUATION TO ENERGIZED THE OTHER ONE OF SAID OPPOSED WINDINGS TO DISCONNECT SAID SOURCE OF CHARGING VOLTAGE FROM SAID BATTERY TERMINALS.