ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,994, issued on May 20, was assigned to Blue Origin Manufacturing LLC (Huntsville, Ala.).
"Friction stir additive manufacturing formed parts and structures with integrated passages" was invented by Michael L. Bailey (Montgomery, Texas) and Weidong Song (Woodinville, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be ma...