Circuit breaker arc quenching device with venting structure including flapper valve
US5569894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | May 16, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/343
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc quenching device for a circuit breaker having a stationary contact member and a moving contact member includes a magnetic element formed of an arc quenching core and a base plate. The arc quenching core includes a back wall, and two side walls extending from lateral sides of the back wall. The base plate extends substantially perpendicularly from a lower side of the back wall in a direction as in the side walls, and is fixed to the stationary contact member. The base plate includes a U-shaped magnetic driving core situated near a stationary contact point and extending upwardly from the base plate to surround the stationary contact point, and an arc horn integrally formed with the base plate and obliquely extending toward the back wall from a portion near the stationary contact point. Arc formed between the stationary contact member and the moving contact member is moved by magnetic driving force formed by the magnetic driving core to the arc quenching core to be quenched therein through the arc horn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.