Rechargeable lighting devices
US9671098B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Sep 18, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable lighting device has a rechargeable power source with a positive electrode located at its rear end, a main power circuit that powers a light source and includes the positive electrode, a charging circuit configured to be enabled when the lighting device engages a charging device, and at least one charging contact located on the exterior of the lighting device at or near its tail end. A microcontroller and switch are located at the rear end and the microcontroller wakes up to either turn on the main power circuit and isolate the charging contract from a charging ground path or turn on the charging circuit in which case the charging contact acts as part of the charging ground path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.