Expansion clip on a ceiling runner
US4580386A · kind A · utility
12Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1981 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Dec 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides a slot in the runner and lugs on a clip to allow sliding contact between the runner and the clip. This allows for expansion of the runner during a fire condition. The clip is fastened to the vertical web of an adjacent runner to fasten the runner structures together. Normally, a clip is provided on each end of one runner structure and it is mounted between two rigidly positioned other runner structures and the runner with the clips is capable of expansion and contraction under fire conditions without buckling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.