US Patent Issued to Mazda Motor on March 31 for "Rotor structure of rotary electric machine" (Japanese Inventor)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,623, issued on March 31, was assigned to Mazda Motor Corp. (Aki-gun, 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 including a rotor, a stator, and magnetic pole parts is provided. Each magnetic pole part includes a radially-magnetized fixed magnetic-force magnet, first variable magnetic-force magnets which are disposed radially outward of, and at both circumferential end sides of, the fixed magnetic-force magnet, respectively, and have a magnetization state that is changeable in the circumferential direction by a magnetic flux, and...