Epoxy bonded silicon carbide lightning-protection valve
US4074221A · kind A · utility
4Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Sep 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/118
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lightning protection is provided by an electronic valve molded mainly of silicon carbide powder. The manufacturing cost and high reject rate of previous ceramic bonding is greatly reduced by bonding with epoxy resin, the mixture being pressure molded. The surface-tracking characteristic of epoxy resin is rendered harmless by covering the periphery of the molded piece with insulation and by inclusion of alumina powder in the mix. The insulating sleeve is extended to provide a hood preventing harmful migration of an ionized arcing path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.