Battery charger with night light for a cordless telephone
US5587645A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 9, 1994 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Mar 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery charger having a night light is described for use with a cordless telephone. The battery charger is energized by being plugged into a standard AC outlet and includes a cradle for receiving a cordless telephone handset having rechargeable batteries. The battery charger includes a phototransistor for detecting the level of light impinging on the battery charger and a lamp for providing illumination. When AC power is cut off and the phototransistor detects that the light level is below a predetermined level, the lamp is powered by the handset battery to provide illumination and to enable a user to locate the handset during low light conditions while it is being charged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.