| 摘要 |
A ski-skateboard device driven by intermittent downward pressure applied to two foot pads or a pair of hand-operated handles. A disk-shaped platform has a fixed central flange extending downward. A suspension assembly is provided on each side of the central flange with two axles being rotatably attached to each suspension assembly. At least two axles have eccentric portions to which one or more force application rods are attached. Each axle has an outer end to which a wheel is fixed, and an inner end connected to the suspension assembly. The relative position of eccentric portions of selected pairs of axles may be maintained to allow propulsion by a rocking or treading motion supplied by the hands or feet. The suspension assembly may be a suspension spring apparatus or a shock absorber with a pivotal plate apparatus so that at least the right and left portions of the suspension system are independently movable in a vertical direction. A brake mechanism may be provided to force a brake shoe against one of the axles and a flywheel may be provided for stability.
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