ARC extinguishing chamber for an electric protection apparatus and electric protection apparatus comprising same
US9362070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Apr 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an arc extinguishing chamber of an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, when they separate, form an arc between them, said arc formation chamber communicating with the inlet of a second chamber, called arc extinguishing chamber. This chamber comprises a wall called balancing wall, substantially solid at least on its central part, said wall being located downstream from the arc extinguishing chamber and being formed and arranged with respect to the arc extinguishing chamber in such a way as to slow down the exhaust flow of the breaking gases on the side of the arc extinguishing chamber where the gases go first, and enhancing flow of the exhaust gases on the opposite side, the exhaust gases being stopped by the central part of the wall and escaping via the edges of the wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.