Single direct current arc chamber, and bi-directional direct current electrical switching apparatus employing the same
US8222983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2010 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single direct current arc chamber includes a ferromagnetic base having first and opposite second ends, a first ferromagnetic side member disposed from the first end, a second ferromagnetic side member disposed from the opposite second end, a third ferromagnetic member disposed from the ferromagnetic base intermediate the ferromagnetic side members, a first permanent magnet having a first magnetic polarity disposed on the first ferromagnetic side member and facing the third ferromagnetic member, and a second permanent magnet having the first magnetic polarity disposed on the second ferromagnetic side member and facing the third ferromagnetic member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.