ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,620, issued on Feb. 24, was assigned to Honda Motor Co. Ltd. (Tokyo).

"Rotating electric machine system, and combined power system equipped therewith" was invented by Manabu Yazaki (Wako, Japan), Tatsuya Choji (Wako, Japan), Naoki Ito (Wako, Japan) and Yuichiro Mitsui (Wako, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotating electric machine system includes a rotor and a stator. A rotor internal oil passage is formed in the interior of the rotor. The rotor is cooled by a first cooling oil serving as a lubricating oil that flows through a rotor internal oil passage. A housing internal oil passage is formed in a rotating electric machine ...