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Title:
吊車システムユニットと吊車システムユニットを用いた常閉式遮煙防火戸装置
Document Type and Number:
Japanese Patent JP4255310
Kind Code:
B2
Abstract:

To provide a normally closed smoke-insulating fire door device with a speed regulating function, having four hanging wheels on one side.

The fire door of a simple structure comprises a guide rail of a substantially C-shape in cross section disposed to tilt and the four hanging wheels disposed on one side to hang the fire door to automatically close. The fire door further comprises an automatic-closing speed regulating device. When an opening part is automatically closed, the fire door is pressed against an opening part side by a pressing means upon complete close of the door so that the smoke may also be prevented from flowing out by providing a smoke insulation member on a periphery of the opening part side in advance.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Kazuaki Ando
Application Number:
JP2003133779A
Publication Date:
April 15, 2009
Filing Date:
April 04, 2003
Export Citation:
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Assignee:
Towa Co., Ltd.
International Classes:
E05D15/06; A62C2/06; E06B5/16; E06B7/16
Domestic Patent References:
JP3017371Y2
JP3212590A
JP200213345A
JP11172998A
JP34878U
JP61220664A
JP6153981A
JP200140954A
JP4123989U
JP2002371766A
JP4429114B1