ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,000, issued on Aug. 5, was assigned to RTX Corp. (Farmington, Conn.).

"Aircraft propulsion system geartrain" was invented by Paul R. Hanrahan (Sedona, Ariz.), Benjamin T. Mylrea (Jupiter, Fla.) and David A. Stachowiak (Manchester, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly is provided for an aircraft. This assembly includes a geartrain, a first propulsor rotor and a rotating structure. The geartrain includes a sun gear, a ring gear, a plurality of intermediate gears and a carrier. The ring gear circumscribes the sun gear and is rotatable about an axis. Each of the intermediate gears is between and meshed with the sun gear and th...