ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,702, issued on May 20, was assigned to MITSUBISHI GENERATOR Co. LTD. (Kobe, Japan).
"Rotor of rotating electric machine and rotating electric machine" was invented by Saya Okano (Tokyo) and Go Kajiwara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bipolar rotor of a rotating electric machine is such that flexural rigidity asymmetry of a rotor main portion is adjusted using a cross slot provided in a rotor core, and flexural rigidity asymmetry of a rotor stepped portion is adjusted using a cutout groove provided in the rotor stepped portion, whereby optimization is achieved by combining the flexural rigidity asymmetry of the rotor main port...