Fire expansion joint for ceiling runner
US4893444A · kind A · utility
14Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S52/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The expansion joint for the runner is formed with two cut-out areas and cuts in the vertical web to permit the horizontal web, enlarged bulb and remaining web by the cut-out areas to bend outward to absorb expansion of the runner when subjected to fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.