US Patent Issued to YAMAZAKI MAZAK on July 7 for "Door device of machine tool and machine tool" (Japanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,348, issued on July 7, was assigned to YAMAZAKI MAZAK Corp. (Niwa-gun, Japan).

"Door device of machine tool and machine tool" was invented by Tomohiro Kintoki (Niwa-gun, Japan), Kenji Arisue (Niwa-gun, Japan), Kenji Hirose (Niwa-gun, Japan), Reiji Maekawa (Niwa-gun, Japan) and Yuki Kaneda (Niwa-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A door device includes a door slidable between a first position and a second position; an air cylinder having a first air chamber to which air is supplied to apply a first assist force to the door in a first direction from the first position toward the second position; a fluid passage connecting the fir...