| 摘要 |
A cabinet or support structure is equipped with a pair of large wheels mounted on wheel hubs that are eccentrically supported upon an axle, the axle being rotatable to raise the wheel hubs and thereby the wheels so that the bottom of the cabinet can seat on the floor or floor carpet, and when the axle is rotated to lower the hubs, the cabinet can then be moved on the large wheels together with edge-supported casters. Means are provided for rotating the axle and locking it in adjusted positions.
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