公开(公告)号：US12297594B2

公开(公告)日：2025-05-13

申请号：US18212929

申请日：2023-06-22

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa Kusudo ,  Satoshi Katsuya ,  Yoshifumi Aso ,  Shuhei Yorimitsu

IPC: D07B1/02 ,  D04C1/12

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).

公开(公告)号：US20230332350A1

公开(公告)日：2023-10-19

申请号：US18212929

申请日：2023-06-22

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa KUSUDO ,  Satoshi Katsuya ,  Yoshifumi Aso ,  Shuhei Yorimitsu

IPC: D07B1/02 ,  D04C1/12

CPC classification number: D07B1/025 ,  D04C1/12 ,  D07B2201/2068 ,  D07B2201/102 ,  D07B2201/1096 ,  D07B2205/2042 ,  D07B2205/201 ,  D07B2205/205 ,  D07B2201/2041 ,  D07B2401/2055

Abstract: Provided is a double braid rope structure which is provided with an inner core and an outer cover. In the double braid rope structure (10), the inner core (3) 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 (10), and the yarn length being determined as an average value of lengths of yarns constituting the inner core of the cut section (V).