Sound producing device
US5611721A · kind A · utility
26Cited by
14References
5Claims
0Family size
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2208/12
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A sound producing ball includes concentric inner and outer ball elements and a plurality of sound producing particles in an open area therebetween. The sound producing particles are dimensioned to travel in the open area when the ball is rotated, and the inner ball element has a plurality of projections thereon for redirecting the sound producing particles as they travel in the open area. The sounds produced by the sound particles as they strike the inner and outer ball elements are generally similar to the sound of rain striking a building roof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.