Fireproof door for hotels, skyscrapers and the like
US4270326A · kind A · utility
18Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Aug 7, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/7098
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fireproof door has a fabric of ceramic or glass fibers attached to a metal frame and covered by facings. The fabric which also may be used as a fireproof mat consists of layers of titanium-treated ceramic or glass fibers felted together by similar needlelike fibers extending through an intermediate layer of fireproof particulate material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.