Heavy-duty circuit breaker with movement reversal
US7507932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Apr 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The heavy-duty circuit breaker contains a first moveable arcing contact piece and a second moveable arcing contact piece as well as an auxiliary drive for driving the second arcing contact piece. An arc may burn between the arcing contact pieces. The heavy-duty circuit breaker has a heating chamber for temporarily storing quenching gas heated by the arc and a throat for guiding a quenching gas flow, which throat is connected to the heating chamber by a channel. The throat can be blocked by one of the two arcing contact pieces, which is the blocking contact piece. The auxiliary drive is designed such that, during an opening operation, a movement direction reversal of the second arcing contact piece from a movement in opposite directions to a movement in the same direction of the two arcing contact pieces takes place, if the throat is no longer blocked by the blocking contact piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.