ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,497, issued on March 11, was assigned to RTX Corp. (Farmington, Conn.).

"Airfoil attachment for turbine rotor" was invented by Michael G. McCaffrey (Windsor, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A turbine for a gas turbine engine includes, among other things, a shaft rotatable about a longitudinal axis, a turbine rotor including one or more rows of turbine blades and a disk assembly coupled to the shaft. The disk assembly includes one or more disks each having an attachment region extending radially between an inner boundary and an outer boundary, the outer boundary is established by an outer periphery of the respective disk, the at...