Toy wheel
US5373791A · kind A · utility
17Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Jun 29, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H17/262
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A toy wheel for a model electric train is provided which is formed of two parts axially arranged next to each other. One part of the wheel has a rolling face having a high coefficient of friction for engagement with a track rail. The other part of the wheel is electrically conducting and, in use, engages a side of the track rail. A spring biases the electrically conducting part toward the rolling part and, in use, into electrical engagement with the current carrying rail on which the rolling part rides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.