Method and apparatus for generating electrical energy from the rotation of a wheel
US4405872A · kind A · utility
31Cited by
2References
8Claims
0Family size
Inventor
Key dates
| Filing date | Mar 2, 1981 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Mar 2, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1853
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Both a method and an apparatus for generating electrical energy from the rotation of a wheel are disclosed. The apparatus is disposed within a pneumatic tire of a non-magnetic wheel and includes a non-magnetic support track circumferentially attached around the wheel, at least one coil positioned along the track, a magnet slidably engaging the track, and an actuator attached to the magnet for developing a drag upon the magnet to cause relative motion between the magnet and coil as the wheel is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.