Game ball
US4830370A · kind A · utility
7Cited by
4References
4Claims
0Family size
Inventor
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2102/06
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A game ball of the type having a flexible resilient wall defining a space inside the ball that is fluid tight and contains a compressible fluid is given a break signalling capability by placing a small quantity of very fine particulate material in that space inside the ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.