发明名称 |
Game balls with cover containing post crosslinkable thermoplastic polyurethane and method of making same |
摘要 |
A game ball having a cover formed from a crosslinkable thermoplastic polyurethane is disclosed. Various types of game balls are described including golf balls and softballs. By selective exposure to radiation, the thermoplastic polyurethane cover is crosslinked and its hardness is increased. Typically, increases in hardness values of at least 2 units on the Shore D scale are realized upon exposure to 3.5 Mrads of gamma radiation.
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申请公布号 |
US6369125(B1) |
申请公布日期 |
2002.04.09 |
申请号 |
US19990471785 |
申请日期 |
1999.12.23 |
申请人 |
SPALDING SPORTS WORLDWIDE, INC. |
发明人 |
NESBITT R. DENNIS |
分类号 |
A63B37/00;A63B37/12;A63B45/00;(IPC1-7):A63B37/12 |
主分类号 |
A63B37/00 |
代理机构 |
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代理人 |
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地址 |
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