The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2026
Filed:
Nov. 10, 2023
Yamazaki Mazak Corporation, Niwa-gun, JP;
Tomohiro Kintoki, Niwa-gun, JP;
Kenji Arisue, Niwa-gun, JP;
Kenji Hirose, Niwa-gun, JP;
Reiji Maekawa, Niwa-gun, JP;
Yuki Kaneda, Niwa-gun, JP;
YAMAZAKI MAZAK CORPORATION, Niwa-gun, JP;
Abstract
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 first air chamber and an air supply source; a switch valve provided at the fluid passage; and a manipulation switch to switch the switch valve between a first state and a second state. The door, in the first state, is movable in the first direction and a second direction opposite to the first direction without the first assist force. The first assist force is applied to the door in the second state. The door at the first position closes an opening a machine tool. The door at the second position fully opens the opening.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile