Solar rechargeable lantern
US6290367A · kind A · utility
12Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 11, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Nov 11, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/802
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable solar lantern with an improved power control circuit. The power control circuit includes a first switch, actuated by the connection of the solar panel to the battery, to prevent power from being supplied to the light bulb when the battery is charging. The power control circuit also includes a second switch to prevent power from being supplied to the light bulb when the voltage falls below a predetermined unacceptable level. Preferably, the second switch remains tripped until reset by the actuation of the first switch, indicating that the battery is being recharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.