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

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,646,983, issued on June 2, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).

"Rotor and motor" was invented by Yoshiyasu Shibayama (Kobe, Japan), Keigo Imamura (Kobe, Japan) and Kazuki Ueta (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "To reduce a leakage flux of a permanent magnet and suppress a decrease in magnet torque. A rotor includes a rotor body rotatable about a rotation axis and permanent magnets arranged in a circumferential direction centered on the rotation axis in the rotor body and having different magnetic poles alternately in the circumferential direction. The sectional shape of the permanent magnet perpendicular to the r...