ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,970, issued on Feb. 10, was assigned to THE JAPAN STEEL WORKS LTD. (Tokyo).
"Link mechanism, link device, and stretching machine" was invented by Shohei Yamashita (Tokyo), Ichiro Nakajima (Tokyo) and Atsushi Chikaraishi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A link mechanism 11 includes a pair of rail holders 24. The rail holders 24 include guide rollers 51a, 51b, 52a, and 52b configured to move along rails 13 and 14 while rotating, roller shafts 54 and 55 penetrating the guide rollers 51a, 51b, 52a, and 52b, bearings 56a, 56b, 57a, and 57b interposed between the guide rollers 51a, 51b, 52a, and 52b and the roller shafts 54 and 55 and...