Baby's marble runway toy
US4720283A · kind A · utility
25Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1985 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Aug 7, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F7/3622
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A toy comprising a hollow cylindricl body having top, bottom and side portions, a centrally disposed spiral passage, and at least one spherical element which can move along said passage as the toy is handled. The toy can be assembled from two semi-cylindrical halves and means are provided for easily aligning the halves prior to final assembly. The toy may be used in combination with rings, the first of which is adapted to receive the cylindrical toy and the second of which is adapted to receive the toy and the first ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.