| 摘要 |
PURPOSE: A power skateboard is provided to skate unlimitedly by transmitting power to the skateboard and to become a good exercise for the person who has bent legs. CONSTITUTION: A power skateboard comprises a small gear(3), an intermittent motion unit(7), a gear(4), a groove(19), a protrusion(16), a spring(18), and rack gears(2R). The intermittent motion unit is fitted into the groove positioned in one side of the small gear. The groove is made to fit with the spring of the protrusion. When rack gears come down, the opposite side of protrusion is rotated by interlocking rack gears with the gear.
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