Curtain fire damper

Details Curtain fire damper Curtain fire damper

1997-06-06

1998-07-21

Joyce, Harold

Ventilation

Fire damper

160 1, 160 6, 454170, F05F 1520

Patent

active

057826900

ABSTRACT:
A damper door system that includes an opening in a planar wall, a retractable damper door and a track extending through said opening. The damper door includes slots that are conformable to the track when the door is in a closed position. In addition, the slots in the damper door include an intumescent material for sealing the door shut in the event of a fire.

REFERENCES:
patent: 1419357 (1922-06-01), Carter
patent: 1575626 (1926-03-01), Haapanen
patent: 2621725 (1952-12-01), Schacikoski
patent: 4194521 (1980-03-01), Banta
patent: 4333392 (1982-06-01), Nailor et al.
patent: 4579047 (1986-04-01), Zielinski
patent: 5551499 (1996-09-01), McRoberts
patent: 5577541 (1996-11-01), McKeon
patent: 5642767 (1997-07-01), Nair

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