ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,717, issued on Aug. 4, was assigned to RTX Corp. (Farmington, Conn.).
"Gas turbine engine rotor blade transition" was invented by Griffin D. Lavine (South Glastonbury, Conn.), David R. Pack (Gold Canyon, Ariz.), Brandon W. Spangler (Vernon, Conn.) and Jennifer H. Archambeau (Ludlow, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor blade for a gas turbine engine is provided that includes an airfoil, an attachment section, and a neck section. The airfoil includes a plurality of internal cooling air passages. The attachment section has a base surface. A forward center cooling air passage is open at the base surface and extends through the at...