Method and apparatus for shielding and armature from a magnetic flux
US6972649B1 · kind B1 · utility
5Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2005 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Jan 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/2454
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A trip unit for a circuit breaker having a current carrying conductor that electrically communicates with a cable or a bus bar. The trip unit includes a current carrying strap, a magnet core, an armature and a magnetic barrier. The current carrying strap is adapted to be in electrical communication with the current carrying conductor. The magnet core is disposed at the current carrying strap. The armature is pivotally disposed in magnetic communication with the magnet core. The magnetic barrier is disposed to shield the armature from a magnetic flux generated in the current carrying conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.