Sintered body and electrode, method for surface densitication of these, process for manufacturing electrode by this method and circuit breaker
US6753494B2 · kind B2 · utility
2Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6643
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode comprises an electrode main body having a porosity, and the conductivity of the electrode main body at its part ranging from the arc running face to a stated depth is made higher than the conductivity at the section or the conductivity at the part ranging from the back surface to a stated depth. This brings about an improvement in circuit-break performance of a circuit breaker and also prevents the arc running face of the electrode main body from deteriorating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.