| 摘要 |
<p>One embodiment of a tricycle having a spine frame, supported by a rear wheel and a pair of steerable front wheels, and supporting a recumbent seat pivotably attached at its rear. A pedal boom extends forwardly of the spine and supports a pedal crank assembly. The front wheels each support a lateral arm with the front wheel pivotably attached at the distal end and an angular projection attached at the proximal end. A pivot connects each angular projection to the spine, allowing the lateral arms and attached front wheels to fold to a stowed position alongside the spine. Another pivot connects the boom to the spine, allowing the boom fold back to a stowed position against the spine. In the travel position, clamping means arrest the angular projections, and can arrest the boom and seat. The tricycle is collapsible to several levels of compactness.</p> |
