发明授权
US6161855A Two wheel drive bicycle 失效
双轮驱动自行车

Two wheel drive bicycle
摘要:
The present invention describes a two-wheel drive bicycle. The drive train, which supplies power to the front wheel, is incorporated into a modified frame. The bicycle includes a rear wheel driven by a traditional chain mechanism. The front wheel is driven by a series of shafts transmitting power from the driven rear wheel to the front wheel.
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