Title:
OPENING AND CLOSING DEVICE
Document Type and Number:
Japanese Patent JP3787250
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an opening and closing device capable of adequately securing airtightness and passing through a communicating portion between a first closed sheet body and a second closed sheet body by pushing.
SOLUTION: A fire-resistant screen device 15 as an opening and closing device has first to sixth closed sheet bodies 41, 42, 45, 51, 52 and 56. Sixth closed sheet body 56 comprises a first sheet portion 61 and a second sheet portion 62. When they are subjected to a wind pressure, the passing of gas is prevented at least two overlapped portions at the first to sixth closed sheet bodies 41, 42, 45, 51, 52, 56 and the airtightness can be adequately secured. A person is able to pass through an evacuation opening 40 of the basic sheet portion 64 only by pushing the fourth closed sheet body 51 without pulling none of the first to sixth closed sheets bodies 41, 42, 45, 51, 52, 56.
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Inventors:
Hiroki Nakamura
Application Number:
JP30008899A
Publication Date:
June 21, 2006
Filing Date:
October 21, 1999
Export Citation:
Assignee:
Bunka Shutter Co., Ltd.
International Classes:
E06B9/13; A62C2/06; A62C2/10; E06B9/17; (IPC1-7): E06B9/13; A62C2/06; A62C2/10
Domestic Patent References:
| JP11141249A |
Attorney, Agent or Firm:
樺澤 襄
Shimamune Masami
Satoshi Kabazawa
Shimamune Masami
Satoshi Kabazawa
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