US 9,932,767 B2Granted

Fire door

AssigneeDaifuku Co., Ltd.

InventorsYukihisa Matsuo, Kouji Yasuda, Yoshihiro Hosaka, Naoki Kawabe, Nobuo Ogawa

Life of this patent

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Abstract

A fire door includes an intermediate member formed in the shape of a plate and arranged between a first plate member and a second plate member; a first heat insulating material arranged between the first plate member and the intermediate member; a second heat insulating material arranged between the second plate member and the intermediate member; a first coupling member for coupling the first plate member and the intermediate member, arranged so as to extend through the first heat insulating material; and a second coupling member for coupling the second plate member and the intermediate member, arranged so as to extend through the second heat insulating material. The first coupling member is arranged so as to be spaced away from both of the second plate member and the second coupling member. The second coupling member is arranged so as to be spaced away from the first plate member, and the first plate member and the second plate member are arranged so as to be spaced away from each other.

Claims8

Dependent claims

A fire door comprising:

a first plate member formed in the shape of a plate;
a second plate member formed in the shape of a plate and arranged so as to be laid over the first plate member as viewed in a plate thickness direction;
an intermediate member formed in the shape of a plate and arranged between the first plate member and the second plate member;
a first heat insulating material arranged between the first plate member and the intermediate member;
a second heat insulating material arranged between the second plate member and the intermediate member;
a first coupling member for coupling the first plate member and the intermediate member, arranged so as to extend through the first heat insulating material;
and
a second coupling member for coupling the second plate member and the intermediate member, arranged so as to extend through the second heat insulating material;
wherein the first coupling member is arranged so as to be spaced away from both of the second plate member and the second coupling member,
wherein the second coupling member is arranged so as to be spaced away from the first plate member, and
wherein the first plate member and the second plate member are arranged so as to be spaced away from each other.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/667,850Filed 3 Aug 2017
Priority: JP 2016-1545945 Aug 2016
Published: US 2018/0038157 A18 Feb 2018
Granted: 3 Apr 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

E06B 5/16
For protection against air-raid or other war-like action; for other protective purposes: fireproof doors or similar closures; Adaptations of fixed…
E06B 3/70
Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like…:…
E06B 3/827
Flush doors, i.e. with completely flat surface: of metal without an internal frame, e.g. with exterior panels substantially of metal
E06B 3/00
Window sashes, door leaves, or like elements for closing wall or like