Circuit breaker with welded contacts
US5184717A · kind A · utility
92Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The handle of a circuit breaker is blocked from movement to the off positiion, when the contacts are welded closed, thereby preventing rotation of the common cross-bar on which contact arms carrying the movable contacts are mounted, by an interlock which includes radial extensions on the arms of a pivoted handle yoke which radially engage projections on the cross-bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.