| 摘要 |
A ridable toy dump truck powered by foot pedals to selectively either rotate wheels to propel the dump truck across a surface or to lift or recover a dump bed. The rotational force derived from the foot pedals is transmitted through a chain to a drive shaft. A second sprocket on the drive shaft transmits rotational force to predetermined wheels to propel the vehicle, while a third sprocket on the drive shaft transmits force to raise or lower the dump bed. A sliding clutch selects whether the second or the third sprocket is driven. A control handle engages the clutch so that a rider may select between propelling the dump truck across a surface, or raising or lowering the dump bed.
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