Smoke stop for doors

Details Smoke stop for doors Smoke stop for doors

1975-06-25

1976-05-11

Murtagh, John E.

Static structures (e.g., buildings)

Window or window sash, sill, mullion, or glazing

Decorative grill attached to sash

52 1, 52232, 52741, E04H 900

Patent

active

039553302

ABSTRACT:
A smoke stop for doors is disclosed. The smoke stop consists of a metal frame with a slot therein extending along substantially the entire length of the frame on the door side thereof; a continuous tube within the slot, the continuous tube having retarded decomposability at the kindling temperature of the door and the continuous tube having one or more fins running the entire length thereof and projecting outward on the door side of the frame; and an intumescent material completely enclosed within the continuous tube. When the door is closed and the frame and door are subjected to flames, the intumescent material expands causing the sealing of the space between the frame and the door and thereby providing a smoke stop between the door and the frame.

REFERENCES:
patent: 3426491 (1969-02-01), Gaeth et al.
patent: 3566541 (1971-03-01), Coulter

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