Puzzle-type amusement device
US4822049A · kind A · utility
Inventor
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F7/042
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A puzzle-type amusement device comprises a stack of rotatable discs formed with two openings adapted to be aligned with each other; and a ball receivable through one of the openings in the top disc so as to pass through the openings aligned therewith in the intermediate discs to rest against the bottom disc. One opening in each intermediate diswc is bounded at one side by a tapered surface curved about the axis of rotation of the disc so as to constitute an inclined tract permitting the ball, when received in such opening, to be rolled along the inclined track out of the respective opening in the direction towards the top disc. The other opening in each intermediate disc is bounded on all its sides by an untapered surface such that the opening constitutes a trap preventing the ball, when received in such opening, from being rolled out of the opening in the direction towards the top disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.