Fused lead wire for ballast protection
US7889463B1 · kind B1 · utility
0Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ballast having fused leads protects against uncommon, but harmful, ballast failures. The fused leads prevent a current in the primary coil of the ballast from exceeding a potentially damaging value. A thermal protector shorts the primary ballast coil if the temperature of the secondary ballast coil exceeds a potentially damaging value. Since the thermal protector permanently disables the ballast, potentially damaging repetitive overheating of the ballast is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.