Self-closing vent

Details Self-closing vent Self-closing vent

2007-03-20

2007-03-20

Shaver, Kevin (Department: 3752)

Fire extinguishers

Apparatus which isolates flames from non-burning area

C169S045000, C454S258000, C454S357000

Reexamination Certificate

active

10269974

ABSTRACT:
A self-closing vent has its frame and honeycomb screen coated with an intumescent material. When affixed to an external wall or eave of a building, the vent is normally open, allowing free flow of air into and out of the building, but when exposed to the heat of a fire, such as a wildfire, the intumescent expands to close the vent, thereby preventing an external fire from entering the building.

REFERENCES:
patent: 2279791 (1942-04-01), Lamb
patent: 3976825 (1976-08-01), Anderberg
patent: 4093818 (1978-06-01), Thwaites et al.
patent: 4722158 (1988-02-01), Urdaneta
patent: 5957211 (1999-09-01), Geuken et al.
patent: 6256948 (2001-07-01), Van Dreumel
patent: 1500913 (1974-02-01), None
patent: 2107183 (1982-08-01), None

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