| 摘要 |
A bicycle comprises front and rear wheel assemblies which are independently steerable. The rear wheel assembly includes a pedal crank which is mounted on the axle of the rear tire. A rear fork holds the rear axle and includes a shaft which is rotatably coupled to a rear portion of the bicycle frame. A saddle is mounted to the top of the shaft of the rear fork. Turning the saddle and/or the pedal crank laterally rotates the rear wheel assembly independently of the front wheel assembly. The front wheel assembly similarly includes a fork which holds the axle of the front tire. A shaft portion of the fork is rotatably coupled to a front portion of the bicycle frame and is coupled to a handlebar. Turning the handlebar rotates the front wheel assembly independently of the rear wheel assembly. The frame retains the front and rear wheel assemblies in a plane which is substantially perpendicular to the plane in which the bicycle is ridden to provide a greater degree of stability and to facilitate the independent steering of the front and rear wheel assemblies.
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