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    • 10. 发明授权
    • Hauling cord
    • 牵引绳
    • US06182432B2
    • 2001-02-06
    • US09252747
    • 1999-02-19
    • Minoru Takahashi
    • Minoru Takahashi
    • D02G302
    • D07B1/02D07B2201/2002D07B2201/2004H02G1/083
    • A hauling cord (L) for pulling an electric power line or the like cable into a conduit has an elongate linear body (1) that is typically a monofilament of a thermoplastic resin. The cord is of a regular or irregular cross section with one or more helical ridges (2) that extend around, along and integral with the linear body between opposite ends of the linear body. The helical ridges are formed by drawing and twisting a raw material of the linear body, and may have either of or both the opposite ends made thinner and/or twisted stronger than the remaining portion so that the pitch between the adjacent ridges is reduced. The cross section renders the cord lighter in weight and more slender, and nevertheless its compression strength and tensile strength are improved.
    • 用于将电力线或类似电缆拉入导管的牵引绳(L)具有通常为热塑性树脂的单丝的细长线状体(1)。 绳索是具有一个或多个螺旋脊(2)的规则或不规则的横截面,所述螺旋脊(2)在直线体的相对端之间沿着线状体延伸。 螺旋脊通过拉伸和扭曲直线体的原材料而形成,并且可以使相对端中的任一个或两者相对于其余部分更薄和/或扭曲得更强,使得相邻脊之间的间距减小。 横截面使帘线重量更轻且更细长,然而其压缩强度和拉伸强度得到改善。