Contact arm mechanism for circuit breaker
US7566840B2 · kind B2 · utility
6Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2007 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Feb 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/2427
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mechanism for a circuit breaker contact arm that allows current limiting by reducing the opening time is disclosed. A contact arm is coupled to a contact arm mechanism that includes a carrier coupled to a first pair of linkages. A second pair of linkages is coupled to the first pair of linkages. A second carrier coupled to the second pair of linkages attaches to the contact arm mechanism to a main circuit breaker mechanism through a lay shaft assembly. Upon the occurrence of an undesired electrical condition, the contact arm mechanism moves from a locked to an open position allowing the contact arm to blow open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.