Panel rejection feature for twin circuit breaker
US4937704A · kind A · utility
4Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B1/056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Rejection of a twin circuit breaker at panelboard mounting positions not designated to receive a twin breaker is achieved by extending the hook of the twin breaker outwardly beyond the panelboard rail to prevent anchoring the outboard end of the twin breaker at non-designated positions, thereby indicating obviously improper installation. The rail is provided with outward extensions at designated mounting positions which do engage with the twin breaker hook to anchor the outboard end, such extension in a preferred embodiment being part of an adapter attached to the panelboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.