ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,946, issued on June 23, was assigned to RTX Corp. (Farmington, Conn.).

"Turbine engine tip clearance control utilizing electric machine" was invented by Graham R. Philbrick (Durham, Conn.), Gary Collopy (Vernon, Conn.) and John P. Virtue Jr. (Middletown, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An operating method is provided during which a command is received to increase thrust generated by a propulsor rotor from a first thrust level to a second thrust level. The propulsor rotor is operatively coupled to an engine core and an electric machine. The engine core includes a flowpath, a compressor section, a combustor section and a turbine s...