Panelboard vent assembly
US4261189A · kind A · utility
10Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1979 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Jan 22, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/702
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A retainer plate is pivotally mounted on a panelboard cabinet door lock housing, which carries a latch for locking the door. A detent on the plate engages in a rabbet opening to enable limited opening movement of the door in response to the pressure developed by arc gases generated by fault currents passing through a tripped circuit breaker in the panelboard cabinet. For ordinary opening movement, the lock latch is manually operated to pivot the retainer plate and disengage the detent from the rabbet opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.