Arc extinguishing assemblies and methods
US9530592B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc extinguishing assembly for a circuit breaker or switch. The arc extinguishing assembly includes an arc chamber having an arc chamber width (b) adjacent to a contact arm tip of a contact arm, stacked arc plates located at a forward end of the arc chamber adjacent to the contact arm tip, and first and second fin features located at the forward end between the arc plates and the contact arm tip. The first fin feature including a first inner edge and the second fin feature including a second inner edge, wherein the first inner edge and the second inner edge are spaced apart from one another by a spacing distance (a), wherein a venturi ratio of a/b is equal to or less than 0.6. Contact assemblies for circuit breakers, arc chute assemblies, and methods of extinguishing and arc are disclosed, as are other aspects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.