| 摘要 |
<p>A bicycle (1) having a helical drive mechanism (20). The helical drive mechanism (20) is enclosed within a frame (10) of the bicycle (1). The helical drive mechanism (20) is also arranged between the front (13) and rear wheels (15) and extends at an angle from the bicycle frame (10) and in front of the seat (17). Thus, the position of the pedals (31, 32) with respect to the rest of the bicycle (1) resembles that of a conventional bicycle.</p> |
