ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,390, issued on Feb. 17, 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. A gearbox for an aircraft gas turbine engine includes: 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 planet gears being rotatably ...