Low-voltage limiting circuit breaker with leaktight extinguishing chamber
US4943691A · kind A · utility
92Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Jun 12, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2077/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current limiter comprises an extinguishing chamber 16 of small volume, in which there are housed a pair of contacts 28, 30 and an insulating shield 40, capable of moving to an active position inserted between the contacts 28, 30, and of subdividing the chamber 16 into two parts each of which contains one of the contacts 28, 30. The movement of the insulating shield 40 to the inserted position between the contacts 28, 30 is favored by the action of a piston 48 subjected to the pressure prevailing in the extinguishing chamber 16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.