ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,098, issued on Nov. 11, was assigned to Mazda Motor Corp. (Hiroshima, Japan).
"Rotor structure of rotary electric machine" was invented by Naoki Itasaka (Aki-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor structure includes a rotor, a stator, and magnetic pole parts provided to a rotor core. Each magnetic pole part includes a radially-magnetized fixed magnetic-force magnet, an auxiliary fixed magnetic-force magnet disposed radially outward of the fixed magnetic-force magnet and radially magnetized in the same direction as the fixed magnetic-force magnet, and first variable magnetic-force magnets disposed at both sides of the fixed...