| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems that operators slip to cause accidents on a slope, especially with an inclination of 30-50 degrees, operators dealing with a cage or stones are apt to slip and unstable and provide a wire netting capable of being inexpensively manufactured, by which operators are prevented from slipping with retaining the shoes on the slope. SOLUTION: The upper pert of the netting of the upper part of the cage is projected so as to form a chevron shape. In this way, the shoes are retained so that the operators are prevented from slipping. The chevron shapes are formed for every mesh as protrusions. A flat part is formed to fill stones in the lower part. That is, only the upper part is provided with the protrusions for every mesh. The chevron shape are formed as the protrusion for every one pitch upward. COPYRIGHT: (C)2004,JPO&NCIPI
|
