US Patent Issued to Kawasaki Jukogyo on July 29 for "Friction stir tool control method and friction stir device" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,621, issued on July 29, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).

"Friction stir tool control method and friction stir device" was invented by Masahiro Miyake (Kobe, Japan), Takuya Fukuda (Kobe, Japan), Tadahiro Edagawa (Kobe, Japan), Yoshitaka Muramatsu (Kobe, Japan), Norichika Kita (Kobe, Japan) and Makoto Tsujinaka (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A friction stir tool control method is a control method for controlling an operation of a friction stir tool by supplying a necessary drive electric current to a drive source of the tool. The control method includes obtaining a pressurizing force change ratio by com...