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    • 1. 发明授权
    • Bicycle enabling a substantially full length prone riding position
    • 自行车能够实现全长的乘坐位置
    • US4248448A
    • 1981-02-03
    • US52409
    • 1979-06-27
    • Igor Dmitrowsky
    • Igor Dmitrowsky
    • B62K3/00B60K13/00
    • B62K3/005
    • A bicycle having a frame extended rearwardly and beyond the rear wheel of the bicycle provided in the extended portion with a pedal crank driven sprocket connected by an endless drive chain with a sprocket gear carried by the rear wheel, the extended portion being in one form of the invention an integral part of the frame, or being in a modified form of the invention an accessory unit separably attachable to the conventional frame of a bicycle, in which modified form the sprocket gear is connectible by the drive chain, at the election of the rider, with either the pedal crank driven sprocket in the accessory unit or with the normal pedal crank driven sprocket in the conventional frame.
    • 一种自行车,其具有向后延伸并且超过所述自行车后轮的框架,所述车架设置在所述延伸部分中,所述踏板曲柄从动链轮由具有由所述后轮承载的链轮齿轮的环形驱动链连接,所述延伸部分处于 本发明是框架的整体部分,或者是本发明的改进形式,可分离地附接到自行车的传统框架的附件单元,其中链轮齿轮由变速链可连接的修改形式,在选择 骑手与辅助单元中的踏板曲柄从动链轮或常规框架中的普通踏板曲柄从动链轮相连。