Molding composition for arc circuit breakers
US4511773A · kind A · utility
5Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1983 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Aug 3, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ceramic useful as an electrically insulating material is produced by calcinating wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece. The ceramic is employed within arc circuit breakers as a substitute for asbestos liners, dividers and arc splitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.