Electric switchboard apparatus with a breaker-fuse interlock
US4489362A · kind A · utility
22Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1983 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Mar 1, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/133
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switchgear unit contains interlocked circuit breaker and fuse compartments. The interlock prevents the fuses from being withdrawn from their power stabs until the circuit breaker is withdrawn from its power stabs first. A mechanical linkage arrangement causes an interference between the racking tool and the fuse compartment racking shaft until the breaker is withdrawn from the breaker compartment power stabs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.