Method of manufacturing multi-layer game ball
US6261400A · kind A · utility
39Cited by
30References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1997 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Apr 9, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing multi-layer game ball products includes the steps of extruding an inner layer precursor as a parison in a partial melt state, forming an outer layer, introducing the inner and outer layers into a mold and expanding the parison within the mold to form the multi-layer game ball product. The outer layer may take the form of pre-cut panels vacuum supported in the mold and an intermediate layer may be provided for dimensional stability in the product. Subsequent to expanding the parison a filler such as foam may be injected into the center space for forming a core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.