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    • 1. 发明授权
    • Optical fiber cable
    • 光纤电缆
    • US06654527B2
    • 2003-11-25
    • US10270265
    • 2002-10-15
    • Itaru SakabeNobuhiro AkasakaMasayoshi Yamano
    • Itaru SakabeNobuhiro AkasakaMasayoshi Yamano
    • G02B644
    • G02B6/4432
    • An optical fiber cable having excellent workability and long-term reliability. The cable comprises at least one optical fiber, a plastic jacket covering the optical fiber or optical fibers, and at least one anti-shrink member embedded in the jacket. The jacket has a longitudinal shrinkage of at most 0.5% when heated at 110° C. for two hours. The cable has a remaining bend with a radius of curvature of at least 100 mm when wound on a 50-mm-radious mandrel and heated at 85° C. for two hours. The deflection of a 30-cm-long cantilever made of the cable is at least 50 mm. In one aspect of the cable, the cable is specified by the conditions of ESt/ESj≧0.7, EIt/EIc≧0.1, and EIc/Mc≦8×106 mm3 (E: Young's modulus; S: cross-sectional area; t: total of anti-shrink members; j: jacket; I: geometrical moment of inertia; c: cable; and M: mass).
    • 一种具有优异的可加工性和长期可靠性的光纤电缆。 电缆包括至少一个光纤,覆盖光纤或光纤的塑料护套,以及嵌入护套中的至少一个抗收缩构件。 当在110℃下加热2小时时,护套的纵向收缩率至多为0.5%。 当在50毫米辐射心轴上缠绕并在85℃下加热2小时时,电缆具有至少100mm的曲率半径的剩余弯曲。 由电缆制成的30厘米长的悬臂的偏转至少为50毫米。 在电缆的一个方面,电缆由ESt / ESj> = 0.7,EIt / EIc> = 0.1和EIc / Mc <= 8X10 <6> mm 3的条件(E:杨氏模量; S :横截面积; t:抗收缩构件总数; j:护套; I:几何惯性矩; c:电缆; M:质量)。
    • 2. 发明申请
    • Communication cable, and communication wire protecting tube
    • 通讯电缆和通讯线保护管
    • US20050098342A1
    • 2005-05-12
    • US10738224
    • 2003-12-18
    • Itaru SakabeHisashi TanjiToshiaki KakiiHiroki IshikawaKazuaki HamadaNobuhiro Akasaka
    • Itaru SakabeHisashi TanjiToshiaki KakiiHiroki IshikawaKazuaki HamadaNobuhiro Akasaka
    • G02B6/44H01B7/17H01B11/00H02G3/04H01B7/18
    • G02B6/4461G02B6/4478H02G3/0481
    • [Problems to be solved]A communication cable and a communication wire protecting tube, which can be easily bent to a predetermined bend radius by a low force but which requires such a higher force for the bend of a smaller diameter that it may be hard to bend. [Means for solving the Problems]The communication cable 10,10A comprises a communication wire 11,11A and an armor 13A including at least two synthetic resin layers, and protects the communication wire 11,11A in a loose state. The communication wire protecting tube comprises at least two synthetic resin layers, and inserts the communication wire 11,11A in a loose state. The most hard resin layer 13a, 13aA of the armor 13,13A has a crosswise or spiral annular groove 14 or cut portion 14A continuous in the longitudinal direction to reach the radially inner face, and the outermost layer of the armor 13,13A is formed of a protective layer 13b,13bA made of a softer resin than the hard resin layer 13a, 13aA. The adjoining edge portions 14a,14aA of the annular groove 14 or the cut portion 14A come, when the communication wire 11,11A is to be bent, into contact with each other so that it may be prevented from being bent to a predetermined or smaller bend radius.
    • [待解决的问题]一种通信电缆和通信线路保护管,其可以通过较小的力容易地弯曲到预定的弯曲半径,但是对于较小直径的弯曲需要较大的力,可能难以 弯曲。 解决问题的手段通信电缆10,10A包括通信线路11,11A和包括至少两个合成树脂层的护甲13A,并且保护通信线路11,11A处于松散状态。 通信线保护管包括至少两个合成树脂层,并且将通信线11,11A插入松散状态。 铠装13,13A的最硬的树脂层13a,13aa具有沿纵向方向连续的横向或螺旋状的环形槽14或切割部分14A,以到达径向内表面,并且装甲13的最外层 13A由比硬质树脂层13a,13aa更柔软的树脂制成的保护层13b,13bA形成。 当连接线11,11A被弯曲时,环形槽14或切割部分14A的邻接边缘部分14a,14a进入相互接触,从而可以防止弯曲 预定或较小的弯曲半径。