| 摘要 |
<p>A smoke stop for preventing passage of smoke between a door and door frame is disclosed. The smoke stop consists of a metal frame member with a slot therein extending along substantially the entire length of the frame member; 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; 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 member and the door and thereby providing a smoke stop between the door and the frame member.</p> |
