Field-adjustable power control arrangement and methods of controlling power and of adjusting the timing thereof
US4587417A · kind A · utility
12Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1985 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Mar 19, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field-adjustable power control arrangement for and method of controlling outdoor lighting systems in accordance with a timing cycle which turns an outdoor lighting system off at dawn, on at dusk, off at a nighttime turn-off time after dusk, and on at a morning turn-on time before dawn. The nighttime turn-off time and the morning turn-on time are manually adjustable in an analog and digital manner so as to permit easy and rapid field adjustment and/or factory pre-adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.