Overcurrent protection apparatus

Claim 1

IN AN ALTERNATING CURRENT REGULATING SYSTEM, THE COMBINATION OF: A PLURALITY OF INPUT TERMINALS; A PLURALITY OF OUTPUT TERMINALS; A TRANSFORMER HAVING AT LEAST ONE PHASE INCLUDING FIRST AND SECOND SETS OF WINDINGS AND HAVING EACH OF ITS FIRST SET OF WINDINGS RESPECTIVELY CONNECTED IN SERIES BETWEEN SAID INPUT AND OUTPUT TERMINALS; LOAD CURRENT CONTROL MEANS ASSOCIATED WITH SAID SECOND SET OF WINDINGS TO PROVIDE A VOLTAGE TO THE SECOND SET OF WINDINGS OF SAID TRANSFORMER AND HENCE BY ELECTROMAGNETIC INDUCTION TO THE FIRST SET OF WINDINGS OF SAID TRANSFORMER, WHICH MAY BE SWITCHED FROM OPPOSING AN INPUT VOLTAGE TO AIDING SAID INPUT VOLTAGE ONCE EACH HALF CYCLE; LOAD CURRENT SENSING AND GATING MEANS CONNECTED BETWEEN POINTS REPRESENTATIVE OF OUTPUT CURRENT AND SAID LOAD CURRENT CONTROL MEANS TO AUTOMATICALLY CONTROL THE OUTPUT CURRENT BY VARYING THE TIME IN EACH HALF CYCLE OF INPUT VOLTAGE THAT SAID LOAD CURRENT CONTROL MEANS WILL SWITCH SAID FIRST SET OF TRANSFORMER WINDINGS FROM OPPOSING SAID INPUT VOLTAGE TO AIDING SAID INPUT VOLTAGE; AND OVER-CURRENT PROTECTION MEANS CONNECTED BETWEEN POINTS REPRESENTATIVE OF OUTPUT CURRENT AND SAID TRANSFORMER SECONDARY WINDING TO PROVIDE A SIGNAL TO SAID GATING MEANS TO OPEN CIRCUIT SAID SECOND SET OF TRANSFORMER WINDINGS UPON A PREDETERMINED DURATION OF EXCESSIVE OUTPUT CURRENT.