发明名称 |
Bicycle chain drive sprocket wheel has outer aluminium rim around carbon composite inner section |
摘要 |
A bicycle has a chain drive with a sprocket wheel. The sprocket wheel has an outer toothed ring made esp. of aluminium alloy around an inner ring fabricated from carbon composite materials. The two halves are joined by rivets.
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申请公布号 |
DE20218755(U1) |
申请公布日期 |
2003.02.27 |
申请号 |
DE2002218755U |
申请日期 |
2002.12.04 |
申请人 |
JIANG, CHEN-XUN |
发明人 |
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分类号 |
B62M9/10;F16H55/30;(IPC1-7):B62M9/00 |
主分类号 |
B62M9/10 |
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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