ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,474, issued on Jan. 13, was assigned to FUJITEC Co. LTD. (Hikone, Japan).
"Elevator door device" was invented by Hiroshi Kashiwakura (Hikone, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an elevator door device including a door rail, a door part configured to move by rolling of a roller on the door rail, a door drive part, and a wear-debris adhesion suppression part extending in an opening and closing direction of the door part. The door drive part includes a motor part configured to drive and rotate a drive pulley, a driven pulley disposed apart from the drive pulley in the opening and closing direction, and a...