发明授权
- 专利标题： Game ball
- 专利标题（中）： 游戏球
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申请号： US660898申请日： 1991-03-01
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公开(公告)号： US5123659A公开(公告)日： 1992-06-23
- 发明人: Donald E. Williams
- 申请人： Donald E. Williams
- 申请人地址： IL River Grove
- 专利权人： Wilson Sporting Goods Co.
- 当前专利权人： Wilson Sporting Goods Co.
- 当前专利权人地址： IL River Grove
- 主分类号： A63B37/00
- IPC分类号： A63B37/00 ; B29C41/00 ; B29C41/04 ; B29C41/22 ; B29C44/04 ; B29C70/66 ; C08L23/02
摘要：
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.
公开/授权文献
- US5941934A Current position calculating device 公开/授权日：1999-08-24
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