| 摘要 |
A foot operated wheeled vehicle is disclosed, the vehicle having a frame, a rear wheel, a front wheel pivotally mounted to the frame and handle bars operatively coupled to the front wheel for pivoting the front wheel in the desired angle. The rear wheel has a hub mounted to the frame, the hub having a sprocket mechanically coupled to the hub, a drive sprocket rotatably mounted to the frame and mechanically coupled to the sprocket of the rear wheel by a chain. The vehicle also has a right and left pedal pivotally mounted to the right and left side of the frame, respectively, and pivotally movable between a raised and lowered position, the right and left pedal being mechanically coupled to the drive sprocket by a ratchet mechanism. The ratchet mechanism is adapted and configured to rotate the drive sprocket only when a pedal is moved from its elevated to its lowered position. The ratchet mechanism also permits the right and left pedal to be move independent of each other. Each of the pedals are biased towards their elevated position by a spring.
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