US Patent Issued to AKTIEBOLAGET SKF on March 25 for "Method of induction-hardening a rolling-element bearing ring" (German Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,642, issued on March 25, was assigned to AKTIEBOLAGET SKF (Gothenburg, Sweden).

"Method of induction-hardening a rolling-element bearing ring" was invented by Klaus Pedrotti (Munnerstadt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of induction hardening a bearing ring includes positioning first and second inductors at a start zone on the bearing ring and a preheat inductor in an end zone on the bearing ring spaced one hundred eighty degrees from the start zone. A first traversing element moves the first inductor circumferentially from the start zone toward the end zone along a first half of the bearing ring circumference while ...