ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,806, issued on Sept. 2, was assigned to RTX Corp. (Farmington, Conn.).

"High pressure turbine dirt blocker" was invented by Michael G. McCaffrey (Windsor, Conn.) and Christopher King (Terryville, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dirt blocker including a support structure disposed within a gas turbine engine, the support structure defining an upstream control volume proximate a forward portion of the gas turbine engine and a downstream control volume proximate an aft portion of the gas turbine engine, the downstream control volume being opposite the upstream control volume relative to the support structure, a flow passage formed...