ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,408, issued on Aug. 12, was assigned to RTX Corp. (Farmington, Conn.).
"Life and performance improvement trenches" was invented by Thomas J. Praisner (Colchester, Conn.), John R. Farris (Lebanon, Conn.) and Connor Wiese (State College, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A blade outer air seal assembly includes a plurality of seal segments circumferentially disposed about an array of blades rotatable about an axis, each of the plurality of seal segments having a radially inner surface facing a tip of each blade of the array of blades, the radially inner surface having an arrangement of trenches formed therein, and a radially outer sur...