Electrical panelboard with main breaker hold-down
US4446503A · kind A · utility
7Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1982 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Jan 11, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B1/056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Z-shaped bracket (42) is secured to a circuit breaker panel (2) by a fastener (44) to project forwardly along a plug-in main circuit breaker (30) and overlie the forward surface of the main breaker to prevent removal of the main breaker (30) without first removing the bracket (42). The bracket and its function are made plainly evident by placement and indicia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.