Automatic pocketbook illuminator
US4638412A · kind A · utility
12Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1986 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jan 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus built into and for illuminating the interior of a pocketbook, includes a photodetector circuit sensitive to low levels of ambient light for turning on a switching circuit to energize a light bulb mounted within the pocketbook, and a relay mechanism responsive to closure of the pocketbook for preventing operation of the photodetector circuit for turning on the switching circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.