US Patent Issued to SHIBAURA MACHINE on Feb. 3 for "Friction stir welding device and friction stir welding method" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,555, issued on Feb. 3, was assigned to SHIBAURA MACHINE Co. LTD. (Tokyo).

"Friction stir welding device and friction stir welding method" was invented by Kouichi Katoh (Shizuoka, Japan), Hirohiko Matsuzaki (Shizuoka, Japan) and Toshinao Aoki (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A friction stir welding device includes a table that has a placement surface on which a workpiece is to be placed and is rotatable about a table rotation axis intersecting the placement surface, a tool holder movable relative to the table in a direction along the placement surface and rotatable about a holder rotation axis parallel to the table rotat...