Multi-mode LED retrofit module apparatus and method
US7800313B1 · kind B1 · utility
3Cited by
9References
13Claims
0Family size
Inventors
Key dates
| Filing date | Sep 12, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Jul 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-mode LED retrofit module is provided for a flashlight of a type having a serious circuit including a battery power supply, a light bulb, and a single pull, single throw rotary on/off switch. The retrofit module includes a logical control device which measures an on/off time of the rotary switch, subsequent to a previous on-time which is greater than a pre-determined threshold. If the subsequent on/off time is less than a pre-determined threshold (preferably 0.5 seconds), the subsequent short on/off cycle is interpreted as an instruction to change mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.