Contact material for high-power vacuum circuit breakers
US3948652A · kind A · utility
3Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1972 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | May 10, 1992 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/0203
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.