Circuit breaker with a visual indication of a trip
US6803535B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2004 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H77/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A trip indicator of a circuit breaker is set to the tripped position through engagement by the cradle, which is unlatched by the trip mechanism. Even though the cradle is automatically reset by a reset spring, the trip member indicator is retained in the tripped position by an indicator spring. The trip indicator member is returned to the untripped position by a reset member on the circuit breaker operating member as the latter is rotated by the circuit breaker handle to the ON position. The trip indicating member is transversely displaced through an out of round pivot mount as the operating member is rotated to the off position before the cradle unlatches when the circuit breaker blows open in response to a short circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.