| 摘要 |
The loop is made by two sections (14,16) of line fitted closely together and joined by stitches (18). The stitches pass through the line sections in spirals (20A,22A) and are connected by linking threads (26,30). The stitches, made from synthetic fibres, are positioned asymmetrically when the line is not under tension to give an even distribution of mechanical stresses when the line is tensioned. The spiral stitches in the first section (14) of the line extend for a distance (L1) which is greater than the distance (L2) covered by the stitches in the second section. The linking threads between them are set at a progressively increasing angle along the stitched section. |
