Multi-mode portable lighting device
US8169165B2 · kind B2 · utility
31Cited by
96References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2009 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Mar 6, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable lighting device, such as a flashlight, with a mechanical power switch and multiple operating modes is provided. The mechanical power switch is disposed in series with the controller for the lighting device and acts as the user interface to the controller to change modes of operation. Because the mechanical power switch is in series with the controller, the portable lighting device does not consume battery power when the mechanical switch is open. A state machine coupled to the controller is polled by the controller each time it is powered up to determine the operational mode of the lighting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.