Circuit breaker
US3941963A · kind A · utility
6Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | May 14, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a circuit breaker having puffer type circuit breaking units housed within a tank of metal material, an inspection opening is formed in the tank side wall at a position opposite to a contact assembly in each of the circuit breaking units and is tightly closed by a detachable cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.