ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,036, issued on March 25, was assigned to RTX Corp. (Farmington, Conn.).

"Electric motor driven auxiliary oil system for geared gas turbine engine" was invented by William G. Sheridan (Southington, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine engine includes a fan drive turbine, a fan rotor, and a gear reduction driven by the fan drive turbine and, in turn, to drive the fan rotor. A main oil supply system supplies oil to components within the gear reduction, and an auxiliary oil supply system. The auxiliary oil supply system includes a rotation sensor for sensing rotation of a component that will rotate with the fan rotor, a co...