| 摘要 |
This hand truck provides an adaptor carriage for converting a two-wheel hand truck of the type having a carrying frame supported by a pair of wheels at one end and including a pusher stem at the other end, into a four-wheel truck in one simple operation. The adaptor carriage includes an axle having a ground wheel at each end, an adaptor unit mounted on the axle and an elongate pulling handle. The adaptor unit includes a sleeve having a pin transversely mounted thereon and interfitting the pusher stem in pivotal relation. The elongate handle is pivotally mounted to the adaptor unit.
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