US Patent Issued to NIDEC on June 2 for "Rotor and IPM motor" (Japanese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,646,985, issued on June 2, was assigned to NIDEC Corp. (Kyoto, Japan).

"Rotor and IPM motor" was invented by Yosuke Tanaka (Kyoto, Japan), Takeshi Honda (Kyoto, Japan), Hirofumi Muto (Kyoto, Japan), Hideki Tsuji (Kyoto, Japan) and Yuya Danjo (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor includes a columnar rotor core, having multiple core plates laminated in a thickness direction and a magnet insertion hole extending in an axial direction; and a magnet inserted in the magnet insertion hole. The core plates have multiple first core plates. The first core plates are continuously laminated in the axial direction. Each of the first cor...