ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,409, issued on Aug. 12, was assigned to RTX Corp. (Farmington, Conn.).

"Epicyclic gear train" was invented by Michael E. McCune (Colchester, Conn.), Lawrence E. Portlock (Bethany, Conn.) and Frederick M. Schwarz (Glastonbury, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine engine according to an example of the present disclosure includes a propulsor section including a propulsor supported on a propulsor shaft, a turbine section including a turbine shaft, a compressor section having a plurality of compressor hubs with blades driven by the turbine shaft about an engine axis, and an epicyclic gear train interconnecting the propulsor ...