ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,551, issued on Oct. 21, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).

"Method for controlling friction stir welding device, and friction stir welding device" was invented by Masahiro Miyake (Kobe, Japan), Takuya Fukuda (Kobe, Japan), Tadahiro Edagawa (Kobe, Japan), Norichika Kita (Kobe, Japan) and Makoto Tsujinaka (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a state where a shoulder member is in contact with a contact surface, a pin member is brought into contact with the contact surface to specify a pin movement amount, which is a distance from an initial position of the pin member to the contact surface, and specify a shou...