Panelboard vent assembly
US4293153A · kind A · utility
4Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | May 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0907
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spring steel spring interlocked with a panelboard assembly door by a pull having a leg projecting through the door to engage a passage edge in the spring. When the pull is rotated to open the door the leg moves the spring to disengage a latch adjacent one end of the spring from behind a detent in a frame latch passage. The detent in the frame passage engages the latch to hold the door from rapid opening, if a circuit breaker trips to generate arc gases which exert pressure against the door, but permits separation of the door from the frame and flexure of the door to vent arc gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.