| 摘要 |
A load-bearing platform with fixedly attached wheels. A surrounding basket member is suspended from the platform, so that the basket member can be raised to a position exposing the wheels, at which point latches lock the outer portion of the basket in an upward position for ready rolling. The unloaded platform can be braked against movement by lowering the outer basket against the ground by pushing down on the walls of the basket, unlatching the wheels and pushing the platform up with respect to the basket. This particular construction has the wheels directly attached to the load-bearing platform; the basket is locked or moved by pushing or lifting on the side portions of the basket between an upper and a lowered position.
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