Photocontrol arrangement with mechanically held contacts for controlling an outdoor lighting system
US6300721A · kind A · utility
0Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Sep 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photocontrol arrangement for operating an outdoor lighting system includes a stepper relay whose contacts are mechanically held together or apart, and which is electrically energized briefly only during the generation of a pulse, for minimizing electrical energy usage and reducing overheating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.