Circuit breaker with positive on/off interlock
US5290982A · kind A · utility
6Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pair of lock links straddling and pivoted on the same pin as the latchable cradle of a circuit breaker follow the toggle device of the breaker either by riding on the toggle knee pin or through a pin which bears against the edges of the toggle arms. The lock links have extensions which engage the handle yoke to prevent the handle from being moved to the off position when the circuit breaker contacts are welded closed causing the toggle device to remain erected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.