发明名称 |
PLAY BALLS OR PRESSURELESS TENNIS BALLS |
摘要 |
A hollow rubber play ball is disclosed that uses a combination two or more fillers to produce desirable playing properties in a tennis ball as specified by the International Lawn Tennis Federation (ITF). The preferred play ball is a pressureless tennis ball. The specific fillers disclosed are mineral type particulate reinforcing fillers such as silicas and carbon black, polymeric fillers such as cellulose, a reaction product of grafting polyethylene with cellulose, and ethylene-vinyl acetate copolymers. These fillers can also have surface treatments to enhance the elastomer-filler interaction. Another reinforcing filler that can be introduced with the rubber components is the non-rubber constituents in skim rubber that serve to increase the modulus of a compounded rubber. |
申请公布号 |
CA2128963(C) |
申请公布日期 |
2001.07.03 |
申请号 |
CA19942128963 |
申请日期 |
1994.07.27 |
申请人 |
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发明人 |
HARGIS, I. GLEN;MIRANDA, RICHARD A.;WILSON, JOHN A.;YEOH, OON-HOCK |
分类号 |
A63B39/00;A63B39/06;A63B45/00;C08K3/00;C08K3/04;C08K3/36;C08L21/00;(IPC1-7):C08L1/02 |
主分类号 |
A63B39/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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