Roller skate wheel with self-contained generator
US4298910A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1980 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Feb 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/806
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A roller skate wheel has an inner body portion for securement to the axle of the roller skate and an outer body rotatable about the inner body on appropriate bearings. A permanent magnet is secured to the inner body in flux coupling relationship with electrically conducting windings carried on the outer body. When the wheel rotates, electricity is generated on the windings and used to energize light emitting diodes carried on the outer body of the wheels. The generated electricity is of the alternating type and since the light emitting diodes are essentially polarity-sensitive, they will be energized on only positive half cycles of the current to thereby provide a flashing or stroboscopic effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.