Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
防火引戸扉用遮煙装置
Document Type and Number:
Japanese Patent JP4113505
Kind Code:
B2
Abstract:

To provide a fire sliding door permitting the passage of a fire prevention door by opening and closing the door at ordinary times without increasing a mechanical load thereby permitting the free passage of people there through but, in the case of a fire, a smoke shielding peripheral portion of the door is tightly closed and the passage of a flame can be effectively prevented.

A hygroscopic swelling member 16 having a cross section permitting the formation of an air gap (g) between a smoke insulation peripheral edge portion 8c of a fire door 8 and an opening frame body 3 fixed to a building is adhered to the inside of the opening frame body 3. In the case of a fire, a linkage releasing mechanism 18 is operated by the response of an operation current from a smoke detector or the like, and a water supply piston 17d urged by a spring 17h is reciprocated inside a water supply cylinder 17b. Water W inside the water supply cylinder 17b is supplied to a smoke insulation member 16; it is expanded by absorbing water from the inside of the opening frame body 3 to an air gap g, and the air gap (g) is tightly closed.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Kazushige Suzuki
Oku Haruhiko
Application Number:
JP2004028669A
Publication Date:
July 09, 2008
Filing Date:
January 05, 2004
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Kazushige Suzuki
International Classes:
E06B3/46; E06B5/16; A62C2/06; E06B7/18
Domestic Patent References:
JP54098041U
JP3083558U
JP136473C2
JP611510U
Attorney, Agent or Firm:
Hideo Takino
Fumio Takino
Kozo Ozaki