Solar lighting apparatus
US6493145B1 · kind B1 · utility
20Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Sep 9, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/47
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solar lighting apparatus includes a transparent dome. The transparent dome is provided, at its ceiling center, with a control box accommodating a stepping motor, a controller for controlling the motor and a secondary battery. The stepping motor has a motor shaft coupled with a rotary shaft. On the rotary shaft is coupled a support frame member through a universal joint. The rotary shaft is driven by the motor to turn a reflection mirror held on the support frame member over a predetermined angle while tracking the sun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.