Puffer circuit-breaker with two concentric interrupting chambers
US5373131A · kind A · utility
4Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jul 26, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/98
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A puffer circuit-breaker comprises a first interrupting chamber (2), a second interrupting chamber (4) situated within the first interrupting chamber, and a stationary electric arcing contact (6) which extends inside the second interrupting chamber. The second interrupting chamber is movably mounted in the first interrupting chamber and is arranged to slide along the stationary contact. This arrangement provides good arc-extinction both at low electric current and at high electric current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.