ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,497, issued on March 18, was assigned to Nidec Motor Corp. (St. Louis).
"Retention cap for permanent magnet rotor" was invented by Marc J. Corcoran (St. Charles, Mo.), Jeffrey Scott Sherman (Creve Coeur, Mo.), Daniel E. Bailey (Ballwin, Mo.), Chetan O. Modi (Valley Park, Mo.) and John H. Hussey (St. Louis).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor for an electric motor includes a core, a plurality of magnets, and a magnet retention cap. The core is rotatable about an axis and defines a plurality of magnet-receiving slots. Each of the magnets is received in a respective one of the magnet-receiving slots. The magnet retention cap is fixed...