Multiple relay driver

Claim 1

IN A CIRCUIT FOR SELECTIVELY ENERGIZING AN INDUCTIVE LOAD; IN COMBINATION WITH SAID LOAD; A SOURCE OF POTENTIAL; A FIRST AND A SECOND SWITCHING DEVICE CONNECTED IN SERIES RELATIONSHIP WITH SAID LOAD ACROSS SAID SOURCE, SAID FIRST DEVICE HAVING A SELECTED LOW INVERSE VOLTAGE RATING AND BEING EMPLOYED, WHEN OPERATED TO THE CONDUCTING CONDITION, ONLY FOR CONDITIONING SAID LOAD FOR ENERGIZATION, SAID SECOND SWITCHING DEVICE HAVING A SELECTED RELATIVELY HIGH INVERSE VOLTAGE RATING AND BEING EMPLOYED, WHEN OPERATED TO THE CONDUCTING OR NON-CONDUCTING CONDITION, RESPECTIVELY TO INITIATE OR TERMINATE, RESPECTIVELY, CURRENT FLOW THROUGH SAID LOAD FROM SAID SOURCE; SEPARATE MEANS FOR RESPECTIVELY OPERATING SAID FIRST SWITCHING DEVICE AND SAID SECOND SWITCHING DEVICE TO THE CONDUCTING OR NON-CONDUCTING CONDITION, THE SELECTED RELATIVELY HIGH INVERSE VOLTAGE RATING OF SAID SECOND SWITCHING DEVICE BEING SUCH AS TO ENABLE THAT DEVICE TO WITHSTAND THE HIGH INVERSE VOLTAGE GENERATED BY THE COLLAPSE OF THE MAGNETIC FIELD OF SAID LOAD WITH THE ABRUPT INTERRUPTION OF THE SUPPLY VOLTAGE THERETO WHEN SAID SECOND DEVICE IS OPERATED TO THE NON-CONDUCTING CONDITION TO DEENERGIZE SAID LOAD; AND MEANS FOR PREVENTING THE FIRST SWITCHING DEVICE FROM BEING DAMAGED BY SAID HIGH INVERSE VOLTAGE.