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:
Oct. 31, 2023
Filed:
Sep. 13, 2021
Daifuku Co., Ltd., Osaka, JP;
Takafumi Yamazaki, Hinocho, JP;
Daifuku Co., Ltd., Osaka, JP;
Abstract
A fire door includes: an outer frame; a door body; and a center rail, the center rail is provided so as to overlap a target area in a wall orthogonal direction view, and so as to extend in a width direction between a first frame portion and a second frame portion on the side opposite to the wall body with respect to the target area, the center rail and the first frame portion are fixed to each other, the center rail and the second frame portion are engaged with each other with an engaging mechanism interposed therebetween, and the engaging mechanism is configured to allow relative movement of the center rail relative to the second frame portion in the width direction, and to regulate the relative movement thereof in the wall orthogonal direction and a slide direction.