发明名称 |
Chain wheel and crank for a bicycle |
摘要 |
A bicycle chain wheel and crank of three pieces, namely a crank shaft and a pair of crank arms. The crank shaft freely rotatably supports the chain wheel through a cone, so that the crank is easy and inexpensive to manufacture. The crank arms can be of common shape because a chain wheel mounting boss does not have to be formed on the crank arm.
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申请公布号 |
US4150859(A) |
申请公布日期 |
1979.04.24 |
申请号 |
US19780887803 |
申请日期 |
1978.03.17 |
申请人 |
SHIMANO INDUSTRIAL CO LTD |
发明人 |
KATAYAMA, HITOSHI;SEGAWA, TAKASHI |
分类号 |
B62K19/34;B62M3/00;B62M9/00;F16D41/24;(IPC1-7):F16C3/04 |
主分类号 |
B62K19/34 |
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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