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Bicycle has thoracic breast plate on tube linked to frame and supplementary drive unit for bicycle front-wheel
Bicycle has thoracic breast plate on tube linked to frame and supplementary drive unit for bicycle front-wheel
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机译:自行车的管子上有胸胸板,与车架相连,还有自行车前轮的辅助驱动装置
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摘要
A bicycle has a frame with a prior art pedal drive crank and esp. a supplementary hand-operated crank linked by drive chain to the front wheel, and also performing the primary steering operation. The frame further has a body-support breastplate on a frame member linking the crossbar and lower tube.
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