| 摘要 |
<p>Bicycles constitute a common mode of transport. Usually they are run manually by propelling the rear wheel (R1-5) by connecting it through a chain (F4) to a foot operated pedal (P4) moved by the lower limbs. The present invention relates to a bicycle which is propelled manually by using facilities for propelling both the rear (R1-5) and the front (W 1-5) wheels. The force of both the upper limbs and the lower limbs can be used in this. This bicycle has the advantage of offering greater speed and less fatigue compared to the conventional bicycle. The disadvantage of this bicycle is the additional weight of the rotating handle subassembly used for propelling the front wheel. But this additional weight is negligible.</p> |
