ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,433, issued on March 17, was assigned to MINEBEA MITSUMI Inc. (Nagano, Japan).
"Rotor and motor" was invented by Yutaka Kamogi (Kitasaku-gun, Japan) and Junichi Miyaki (Kitasaku-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor includes a rotor core, a magnet, and a cover. The rotor core includes an annular portion and a plurality of magnetic pole pieces. The magnet is disposed between two magnetic pole pieces adjacent to each other in a circumferential direction of the plurality of magnetic pole pieces. The cover covers an outer peripheral portion of the magnet, and is formed of a non-magnetic member or a member having magnetism lo...