Gypsum board/intumescent material fire barrier wall
US6182407A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Dec 24, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2/7411
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A gypsum board/intumescent material fire barrier wall includes spaced apart, vertically extending metal or wooden studs with only one layer of gypsum board secured to each side of the studs to form a fire barrier wall with a wall cavity. An intumescent material barrier, that is at least coextensive in width and height with the width and height of the wall cavity, is also included in the fire barrier wall and preferably, the wall cavity contains a fibrous insulation blanket. Preferably, the spaced apart gypsum wall boards, with the intumescent material barrier, provide the fire barrier wall with two hour fire-resistive properties meeting or exceeding ASTM test standard E119 for walls and partitions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.