| 摘要 |
A three-wheeled device (<bold>10</highlight>) for pedal-powered riding, wherein the device (<bold>10</highlight>) provides a substantial but not excessive riding challenge. The preferred device (<bold>10</highlight>) broadly comprises three wheels (<bold>12</highlight>); two shafts (<bold>14</highlight>); and two pedals (<bold>16</highlight>). The wheels (<bold>12</highlight>) are oriented parallel to one another so as to rotate about a common axis. Each shaft extends between and couples (<bold>14</highlight>) two of the wheels (<bold>12</highlight>) in an offset manner. Bearings (<bold>26</highlight>) may be provided to facilitate movement of the shafts relative to the wheels (<bold>12</highlight>) by reducing friction therebetween. Each pedal (<bold>16</highlight>) is coupled with a different one of the shafts (<bold>14</highlight>). For added safety, the pedals (<bold>16</highlight>) may include non-slip contact surfaces (<bold>30</highlight>) and light reflectors (<bold>32</highlight>). In use, a rider stands on the pedals (<bold>16</highlight>) and applies force thereto, with the force being transferred via the shafts (<bold>14</highlight>) to the wheels (<bold>12</highlight>) which are thereby caused to roll.
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