Circuit breaker having cradle with a shutter safety device
US8604368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2012 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | May 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker having a cradle, the circuit breaker comprises: an upper shutter and a lower shutter configured to open and close terminals of the cradle; an upper shutter operation link having one end connected to the upper shutter and another end rotatably coupled to a pivot; a lower shutter operation link having one end connected to the lower shutter and another end rotatably coupled to the pivot; and a shutter safety device comprising a coupling unit fixedly-coupled to the pivot, a rotation unit rotatably coupled to the coupling unit, and a link fixing unit provided at one end of the rotation unit, wherein the link fixing unit is to restrict rotation of the upper shutter operation link and the lower shutter operation link in a contacting manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.