ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,727, issued on Feb. 25, was assigned to RTX Corp. (Farmington, Conn.).

"Indirect rotor cooling of electric machine" was invented by Abbas A. Alahyari (Glastonbury, Conn.), Parag M. Kshirsagar (South Windsor, Conn.) and Beata I. Wawrzyniak (South Windsor, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electric machine includes a rotor located at and rotatable about a central axis and a stator positioned proximate to the rotor and defining a radial machine gap between the rotor and the stator. A cold plate is positioned proximate to the rotor. The cold plate is rotationally stationary relative to the central axis and is spaced apart from the ...