Elevator shaft door
US7232012B2 · kind B2 · utility
0Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Dec 19, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/827
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An elevator shaft door having a door panel composed of a front wall and rear wall, which walls are connected together by a thermally releasable material, wherein at least a part of the closing edge of the respective door panels consists of a profile member that is formed by the back wall or thermally non-detachably fastened to the back wall. In the case of a fire, the back wall separates from the front wall through release of the thermally releasable material, wherein the front wall curves by heat effect while the back wall with the closing edge retains the original shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.