Apparatus comprising a track and articles for movement therealong
US4459438A · kind A · utility
Inventor
Key dates
| Filing date | May 3, 1983 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | May 3, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H18/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A combination of a track formed from sections which are joined one to another with articles such as toy vehicles for movement therealong is provided in which the power for movement of the articles is transmitted onto a magnet in the article from an electric magnetic field supplied to the track. The articles thus are moved without any electrical or mechanical contact with the track. Additional magnets are provided in the articles to provide steering and different speeds of movement of the articles and different frequencies may be induced simultaneously into the track separately to control different articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.