| 摘要 |
<p>The invention relates to a towing device which is designed to be attached between two bicycles which are ridden between riders of different riding abilities. The device comprises an elastic bungee cord which is attached to the seat post of the leading bicycle and to the handle bars of the rear bicycle. The elastic cord is rolled up around a spool or bobbin when not in use. In use a gradual transfer of force between the first bicycle and the second bicycle is provided when the two bicycles are ridden. Thus the riders of both the first and second bicycle are able to ride with the same effort they would ride at if not connected. This is provided by simply use the gears to control the effort with the towing rider choosing a lower gear than normal and the towed rider a higher gear than normal. In effect the device is a speed equalising device which allows the riders to stay together. The combination of a retracting spring and bungee cord allow for a progressive increase in assistance force so that speed equalization can occur with a wide range between the fitness of the towed and towing riders.</p> |
