Electrical circuit breaker with rotating arc and self-extinguishing expansion
US5347097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/982
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc extinguishing chamber of a pole of an electrical circuit breaker having rotating arc device, the extinguishing chamber operating by self-extinguishing expansion, includes an elongated housing sealed off at both ends by end plates. Coaxially inside the housing there are disposed tubular contacts and a magnetic blowout coil. Along the length of the extinguishing zone defined by the separation distance between the contacts, there is located a sleeve positioned to leave a gap, which allows a top open area of the chamber and a bottom open area of the chamber, located on opposite sides of the extinguishing zone, to communicate. The gap allows the gases to flow between these two areas and fins arranged on a bottom portion of the chamber slow down rotation of the gases to direct them to the extinguishing zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.