Thermal shield for circuit breaker operating spring
US4431877A · kind A · utility
12Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1982 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Mar 1, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermal shield is employed with a circuit breaker operating spring to protect the spring from thermal degradation during contact arcing. One embodiment includes an ablative plastic coating on the outer surface of the shield to promote arc quenching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.