| 摘要 |
A transport device is provided that includes a wheel assembly (10) having a round axle (20) and a handle (35) and that has at least two separated flattened portions (40) each having a diametrical dimension D2 smaller than the axle diameter D1 in one direction only. Wall members (60) define first slot therein (85). One end of each slot (85) has an opening (90) just large enough to pass one of the flattened portions (40) of the axle (20). A second wall member (100) defines a second slot (110) therein for accepting and retaining a portion of the handle (35) when the handle (35) is positioned parallel to the surface (70). In such a position, the flattened portions (40) of the axle (20) are out of alignment with the first slot (85) such that the axle (20) cannot be withdrawn from the first slot (85). The second slot (110) has a clamp (130) such that the handle (35), when inserted into the second slot (110), is positively captured.
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