Electric current switching apparatus with dual magnet arc spinning extinguisher
US5877464A · kind A · utility
5Cited by
11References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1998 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Mar 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/443
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric arc extinguishing mechanism for an electric current switching apparatus employs a plurality of splitter plates in a conventional arc chute arrangement. Each splitter plate has a pair of permanent magnet structures that produce a magnetic field which interacts with the arc causing the arc to move continuously about the surface of the splitter plate until the arc is extinguished. Such movement prevents the arc energy from being concentrated in one spot which could melt the splitter plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.