US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on Oct. 21 for "Cooling rotary electric machines" (Michigan, Ohio Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,765, issued on Oct. 21, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Cooling rotary electric machines" was invented by Xiaofeng Yang (Troy, Mich.), Peng Peng (Columbus, Ohio) and Farzad Samie (Franklin, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electric propulsion motor system includes a rotary electric propulsion motor that has a stator and a rotor. An air gap is present between the stator and rotor. A fluid circulation system provides pressurized liquid and gas, which is directed through fluid passages in the stator and/or rotor and into the air gap to establish a mixture of pressurized liquid and pressurized gas t...