Compression relief section
US6351919B1 · kind B1 · utility
8Cited by
28References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jul 1, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B9/245
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A compression relief section in a beam in a grid for a suspended ceiling that permits controlled collapse of the section during a fire, whereby the ceiling is kept relatively intact. The section has a channel formed from the web portion of the beam, and a crushed bulb with a hump, along with a flange, that fold from compression forces, while resisting such forces. There is no interference between the folding portions and the ceiling panels, or drywall, when the section collapses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.