US Patent Issued to NIPPON LIGHT METAL on April 22 for "Rotary tool, joining device, and joining method" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,442, issued on April 22, was assigned to NIPPON LIGHT METAL COMPANY LTD. (Tokyo).

"Rotary tool, joining device, and joining method" was invented by Nobushiro Seo (Shizuoka, Japan), Ryo Yoshida (Shizuoka, Japan), Shingo Koizumi (Shizuoka, Japan) and Keita Oikawa (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary tool used in a joining device that performs friction stir welding of a joint member. The rotary tool includes: a main body having a fixed unit attached and secured to the joining device, and a rotary shaft for transmitting a rotary force from the joining device; a stirring member that has a stirring pin inserted into the ...