Circuit breakers with metal arc chutes with reduced electrical conductivity overlay material and related arc chutes
US9887050B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Nov 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Circuit breakers with a metal arc chute having a base and sidewalls extending outward from the base forming an open cavity, a movable arm holding a movable contact adjacent to the arc chute, a line conductor electrically connected to a stationary contact residing adjacent to the arc chute facing the movable contact and a overlay material of reduced electrical conductivity attached to the arc chute and residing in the cavity of the arc chute between the stationary and movable contacts. The overlay material can be a solid three-dimensional shaped insert/molded member with a cavity and/or an overmolded material directly attached to the metal arc chute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.