Coding apparatus

Claim 1

IN A CODED INPUT CONTROL FOR CONTROLLING AN ELECTRORESPONSIVE DEVICE, (A) A PAIR OF CIRCUIT ALTERING MEANS EACH HAVING A SERIES OF OPERATIVE CONDITIONS, CERTAIN OF SAID CONDITIONS BEING RELATED TO ACTUATE THE ELECTRORESPONSIVE DEVICE, (B) MEANS BIASING SAID CIRCUIT ALTERING MEANS TO PREDETERMINED CONDITIONS WHEREBY SELECTED ACTUATION OF A FIRST OF SAID CIRCUIT ALTERING MEANS PREVENTS ACTUATION OF THE DEVICE AND SELECTED MULTIPLE OPERATION OF THE SECOND CIRCUIT ALTERING MEANS PERMITS ACTUATION OF THE DEVICE, (C) A MULTIPLE INPUT CODE MEANS FOR ACTUATING SAID CIRCUIT ALTERING MEANS INCLUDING A PLURALITY OF INPUT MEANS AT LEAST TWO OF WHICH MUST BE OPERATED TO ACTUATE THE DEVICE, (D) FIRST MEANS CONNECTED TO SAID INPUT MEANS AND TO SAID SECOND CIRCUIT ALTERING MEANS AND INCLUDING DRIVE MEANS ACTUATED BY ANY OF SAID INPUT MEANS TO MOVE SAID SECOND CIRCUIT ALTERING MEANS FROM THE PREDETERMINED CONDITION, (E) CONTROL MEANS CONNECTED TO THE INPUT MEANS TO OPERATE SAID FIRST CIRCUIT ALTERING MEANS AND CODE MEANS TO CONNECT A SELECTED PLURALITY OF THE INPUT MEANS TO OPERATE THE CONTROL MEANS AND THEREBY THE FIRST CIRCUIT ALTERING MEANS WHEREBY SAID SELECTED PLURALITY OF INPUT MEANS MUST BE ACTUATED TO PREVENT OPERATION OF THE FIRST CIRCUIT ALTERING MEANS AND THEREBY PERMIT OPERATION OF SAID DEVICE IN RESPONSE TO THE MULTIPLE OPERATION OF THE SECOND CIRCUIT ALTERING MEANS.