Electro-mechanical dynamo for C and D battery replacement
US9812927B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 28, 2014 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Aug 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1861
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A self-contained electro-mechanical device incorporating a hand crank wound main spring mechanism coupled with gears to a rotating magnet inside an iron core with wound copper wire for the purpose of generating electricity. An external AC adaptor can use the generator as a motor to wind the main spring without the need to use the hand crank. An internal electronic circuit is connected to the motor/generator and mechanically coupled using a unique solenoid and clutch mechanism to prevent the main spring from turning until an external load is detected. When packaged in the form of two standard C or D size batteries this invention can be installed into devices currently using electro-chemical batteries. An internal LED light enables the device to be used as a self-contained flashlight. A mini USB connector is incorporated for charging cell phones and powering numerous devices compatible with USB power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.