| 摘要 |
PROBLEM TO BE SOLVED: To provide a carry cart movable in all directions, capable of being stood without removing a shelf board of each layer and a bottom plate at the time of nesting work, and at the same time, supporting a carriage by free wheels at four corners while setting a fixed wheel in the center of the bottom plate apart from the ground. SOLUTION: The fixed wheel is attached to the end of a plate rotating around a rotary shaft attached to the backside of the bottom plate. The plate is closely in contact with the bottom plate when the bottom plate is fallen, and is separated from it when it is stood up, thereby setting the fixed wheel apart from the ground and making it immovable at a height enabling nesting. COPYRIGHT: (C)2008,JPO&INPIT
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