Contact material for high-power vacuum circuit breakers
US4014688A · kind A · utility
5Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1975 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Sep 17, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A new material for making the electrical contacts of high-power vacuum circuit breakers comprises an alloy having as a base metal, a metal such as copper, nickel, iron, cobalt or titanium, and as an alloying metal, a metal such as bismuth, tellurium or lead, this alloy also including an auxiliary metal which forms a eutectic with the base metal used. The alloy has a fine grain size while at the same time a low gas content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.