Double rope structure
AssigneeKuraray Co., Ltd.
InventorsKazumasa Kusudo, Satoshi Katsuya, Yoshifumi Aso, Shuhei Yorimitsu
Life of this patent
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Abstract
Provided is a double rope structure which is provided with an inner core and an outer cover. In the double rope structure, the inner core includes high strength and high modulus fibers with a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher, and has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section (V) cut to a certain length from the rope structure, and the yarn length being determined as an average value of lengths of yarns constituting the inner core of the cut section (V).
Claims11
A double rope structure, comprising an inner core and an outer cover, wherein
- the inner core comprises a plurality of yarns, each yarn comprising a plurality of high strength and high modulus single fibers and having a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher, and
- the inner core has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section cut to a certain length from the rope structure, and the yarn length being determined as an average value of lengths of the yarns constituting the inner core of the cut section.
A double rope structure, comprising an inner core and an outer cover, wherein
- the inner core comprises a plurality of yarns, each yarn comprising a plurality of high strength and high modulus single fibers and having a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher,
- the inner core has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section cut to a certain length from the rope structure, and the yarn length being determined as an average value of lengths of the yarns constituting the inner core of the cut section, and
- the outer cover comprises 80 wt % or more of non-high strength and non-high modulus fibers.
A double rope structure, comprising an inner core and an outer cover, wherein
- the inner core comprises a plurality of yarns, each yarn comprising a plurality of high strength and high modulus single fibers and having a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher,
- the inner core has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section cut to a certain length from the rope structure, and the yarn length being determined as an average value of lengths of the yarns constituting the inner core of the cut section, and
- both the inner core and the outer cover are braided bodies.
Dependencies are inferred from the claim text.