Smoke stop
US3964214A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1975 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Jun 25, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B5/164
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A smoke stop for doors is disclosed. The smoke stop comprises a metal frame with a slot therein extending substantially the entire length of the frame on the door side thereof; a movable lid pivotally attached along one outer edge of the metal frame and releasably attached to a second outer edge of the metal frame thereby completely enclosing the slot in the metal frame; and an intumescent material completely enclosed within the enclosed slot. 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.