ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,441, issued on Aug. 12, was assigned to ROLLS-ROYCE plc (London).

"Gearboxes for aircraft gas turbine engines" was invented by Mark Spruce (Derby, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Gearboxes for aircraft gas turbine engines, in particular arrangements for journal bearings such gearboxes, and related methods of operating such gearboxes and gas turbine engines, including a gearbox for an aircraft gas turbine engine, the gearbox including: a sun gear; a plurality of planet gears surrounding and engaged with the sun gear; and a ring gear surrounding and engaged with the plurality of planet gears, each of the plurality of plane...