| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal bucket having a reinforced structure. SOLUTION: A metal bucket body 10 is of a hollow shape made of a metal material, and has a triangular opening 11 at a first end of the body 10 and a quadrangle bottom 12 at a second end of the body 10. The body 10 also has a number of irregular curved surfaces on the peripheral edge. Arcuate projecting bent parts 16 are formed on the spots where the irregular curved surfaces are in contact with each other to reinforce the structure of the body 10. COPYRIGHT: (C)2006,JPO&NCIPI
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