Auxiliary controller
US6703795B2 · kind B2 · utility
18Cited by
11References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Feb 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting system includes a primary lamp circuit, an auxiliary lamp circuit, and an auxiliary controller. The auxiliary controller is connected between the primary lamp circuit and the auxiliary lamp circuit and is operable to sense a primary lamp circuit voltage. The auxiliary controller extinguishes an auxiliary lamp when the primary lamp circuit voltage exceeds a threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.