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    • 6. 发明授权
    • Fiber optic cable having an extended elongation window
    • 具有延伸伸长窗的光缆
    • US4944570A
    • 1990-07-31
    • US361823
    • 1989-06-30
    • Michael L. OglesbyKenneth E. Cornelison
    • Michael L. OglesbyKenneth E. Cornelison
    • G02B6/44
    • G02B6/4407G02B6/4416G02B6/4422G02B6/443G02B6/4494
    • The present invention is directed toward a fiber optic cable comprising a central core which has one or more helical channels in its periphery. One or more tubes containing a dielectric water-blocking compound and one or more optical fibers are positioned in the channels. The fibers are randomly arranged within the tubes in such a way that tensile stresses on the cable are not transmitted to them, thus providing an elongation window. Finally, the assembly formed by the core and the tube or tubes is wrapped with a serving of metal wires. In one embodiment, the core and tubes may be wrapped with a tape layer before the outer metal wires are applied. Any interstices among the core, the tube or tubes, and tape may also be filled with another dielectric water-blocking compound.
    • 本发明涉及一种包括在其周边具有一个或多个螺旋通道的中心芯的光纤电缆。 包含介电阻水化合物和一种或多种光纤的一个或多个管被定位在通道中。 纤维随机地布置在管内,使得电缆上的拉伸应力不传递到它们,从而提供伸长窗口。 最后,由芯部和管子形成的组件用一系列金属线包裹。 在一个实施例中,在施加外部金属丝之前,芯和管可以用带层包裹。 核心,管或管和带之间的任何间隙也可以用另一种介电阻水化合物填充。
    • 8. 发明授权
    • Process and apparatus for making fiber optic cable
    • 制造光缆的工艺和设备
    • US4757675A
    • 1988-07-19
    • US16128
    • 1987-02-18
    • Michael G. OglesbyAlfred S. VioletteMichael E. McGuireKenneth E. Cornelison
    • Michael G. OglesbyAlfred S. VioletteMichael E. McGuireKenneth E. Cornelison
    • G02B6/44H01B13/02G02B6/04H01B11/22
    • G02B6/4407G02B6/4489
    • An apparatus and a process for simultaneously twisting a channeled core rod, inserting optical fibers into the channels and capturing the twist of the rod while minimizing the insertion stresses imposed on the optical fibers. The apparatus comprises a shape capture die, an insertion die and a core capture means which are located proximate one another to provide a short region of twisting. The insertion die is rotationally fixed to the shape capture die so that as the core passes through the center of the insertion die the fibers are automatically inserted into the channels of the core. The core and inserted fibers are then passed to a core capture means which controls rotation of the core but permits its axial translation. The rotating elements of the machine are driven from a line shaft or other suitable means providing them with identical rotation rates. In this way the core is twisted to form helical channels with inserted fibers without requiring elaborate synchronization of the core translation drive and the fiber insertion die.
    • 一种用于同时扭转通道芯棒的装置和方法,将光纤插入通道中并捕获杆的扭转,同时最小化施加在光纤上的插入应力。 该装置包括形状捕获模具,插入模具和芯捕获装置,它们彼此靠近以提供短的扭转区域。 插入模具被旋转地固定到形状捕获模具,使得当芯线穿过插入模具的中心时,纤维被自动插入到芯部的通道中。 然后将芯和插入的纤维传递到芯捕获装置,其控制芯的旋转,但允许其轴向平移。 机器的旋转元件从线轴或其他合适的装置驱动,为它们提供相同的转速。 以这种方式,芯被扭转以形成具有插入的光纤的螺旋通道,而不需要芯平移驱动器和光纤插入模具的精细同步。