Patent ID: 8716636

Claim:
An inductor powering arrangement for inductively hardening the perimeter of a portion of a part; comprising a pair of separate electrically isolated aligned inductor coil sections mounted to be movable towards and away and each configured to form an open cavity facing the other inductor coil section to thereby together form an opening configured to substantially surround said portion of said part when moved towards each other and into a closed position into close juxtaposition, being closely spaced from each other but not creating any touching contact therewith; each inductor coil section electrically connected to a respective separate secondary inductor loop located spaced therefrom by an electrical connector comprised of a rigid conductor connected to each inductor coil section and a respective associated secondary inductor loop to form an electrical and mechanical connection therebetween; said respective secondary inductor loops each mounted to be substantially aligned with each other and movable towards and away from each other by said movements of said connected inductor coil sections towards and away from each other; an AC power source; a common primary loop connected to said AC power source and mounted to be interposed in between and substantially aligned with said secondary inductor loops, so that said secondary inductor loops are moved to be immediately adjacent to said common primary loop while not making direct contact therewith when said inductor coil sections are moved towards each other, whereby said separate inductor coil sections are separately powered by induction between said common primary loop and said secondary inductor loops and said electrical connectors between each of said inductor coil sections and said secondary inductor loop such that said part can be positioned between said inductor coil section cavities by movement apart and then enclosed when said separate inductor coil sections are moved together and said inductor coil sections are thereby simultaneously caused to be powered by said AC power source when said movement together is completed, and power to said inductor coils simultaneously discontinued upon movement of said induction coil sections apart from each other and from said common primary loop to no longer induce electric current in said secondary loop from said AC power source.