Fastening assembly including washer for sealing the assembly for lightning strike protection in composite structures
US7755876B2 · kind B2 · utility
38Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Aug 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49947
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A washer, a fastening assembly including the washer and a composite structure including the washer sealing the assembly for internal lightning strike protection. The washer includes one or more concentric ribs that are dielectric rings on both sides. When used (e.g., with a nut and bolt) internal to a structure, especially a composite structure, the washer seals the fastener hole (i.e., that the bolt passes through) and contains any sparking and hot gasses that may arise in the fastener hole from entering the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.