US Patent Issued to NIPPON LIGHT METAL on Feb. 24 for "Rotating tool, joining device, and joining method" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,738, issued on Feb. 24, was assigned to NIPPON LIGHT METAL COMPANY LTD. (Tokyo).

"Rotating tool, joining device, and joining method" was invented by Nobushiro Seo (Shizuoka, Japan) and Shingo Koizumi (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a rotating tool used in a joining device configured to perform friction stir welding of to-be-joined members, the rotating tool including: a main body; a stir pin configured to perform friction stirring on the to-be-joined members; a shoulder configured to press the to-be-joined members, the stir pin and the shoulder forming an assembly; a first elastic member configured to bias...