Smoke stop for doors
US3955330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1975 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Jun 25, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B7/2312
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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. PAC BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a smoke stop for doors. 2. Description of the Prior Art It has long been a desire of the construction industry to provide a smoke stop between a closed door and the frame supporting the door. This smoke stop provides numerous advantages. If the smoke stop is effective as a smoke stop, it prevents smoke from passing through the door passage when a fire ex…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.