Game ball
US5123659A · kind A · utility
77Cited by
26References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Mar 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A game ball is made by rotationally molding a hollow spherical shell from a blend of foamed ionomer resins (Surlyn 9450 and Surlyn 8528) and low density polyethylene resin. The center of the hollow spherical core may be filled with foamed polyurethane, and the spherical core may be covered by a leather cover. If desired, hollow ceramic microspheres or beads can be added to the resins before molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.