Circuit breaker with means for producing a flow of arc-extinguishing gas
US4342891A · kind A · utility
4Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1980 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Jul 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A puffer type circuit breaker is provided with a pump means consisting of a piston and a cylinder for producing a blast of arc-extinguishing gas. The piston is joined to one contact of the circuit breaker and the cylinder to the other contact. Both contacts are connected to an operating device which is adapted, during the first part of a breaking operation, to move the contacts in opposite directions away from each other, whereupon one contact and the piston joined thereto are returned to the initial position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.