| 摘要 |
<p>Several arrangements are described, each of which has a pedal/chain arrangement to drive the back wheel and, in addition, an "oar" member 1 pivoted to the frame 2, movement of which in a rowing action is transmitted into drive of the back wheel through suitable gearing. The frame may be foldable. A stand 20 may be used to convert the cycle into an exercise machine. <IMAGE></p> |
