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    Method for forming a sheathed electrical cable
    1.
    发明授权
    Method for forming a sheathed electrical cable 失效
    用于形成护套电缆的方法

    公开(公告)号：US4017579A

    公开(公告)日：1977-04-12

    申请号：US524643

    申请日：1974-11-18

    申请人： Norman P. Roe ,  Gordon W. Brown

    发明人： Norman P. Roe ,  Gordon W. Brown

    IPC分类号： B29C47/02 ,  B29C47/28 ,  H01B13/22 ,  H01B13/24 ,  H01B13/26 ,  B29F3/10 ,  H01B7/18

    CPC分类号： B29C47/28 ,  B29C47/027 ,  D07B1/147 ,  H01B13/22 ,  H01B13/24 ,  H01B13/26 ,  B29C47/0014 ,  B29C47/0016

    摘要： A sheathed electromechanical cable comprises an insulated core and a plurality of strain members in the form of wires or fibers of high tensile strength, sandwiched between the sheath and the core. The sheath is made of a formable material of high tensile strength and which, in combination with the strain members, directly resists tensile and flexion stresses on the cable. The strain members are supplied to the core along a predetermined, converging path and are disposed in uniformly spaced, annular relation relative to the core and brought into snug engagement therewith by drawing through a die, the latter being associated with an extruder device for applying the sheath material around the exposed surface of the strain members. The extrusion period is short and is followed by a quench. The insulated core is composed of a single or a plurality of discrete conductors, with or without individual insulation, and surrounded by a dielectric. In an alternate form of the invention, the strain members constitute the cable core and a jacket of insulating material is extruded about the core. Subsequently, at least one electrical conductor is disposed exteriorly of the jacketed core and which conductor, in turn, may be covered with a wrapping or the like, to maintain the conductor in place on the cable.

    摘要翻译： 护套机电电缆包括绝缘芯和多个以高拉伸强度的线或纤维形式的应变构件，夹在护套和芯之间。 护套由具有高拉伸强度的可成形材料制成，并且与应变构件组合直接抵抗电缆上的拉伸和弯曲应力。 应变构件沿着预定的会聚路径被供应到芯部，并且相对于芯部以均匀间隔的环形关系设置并通过拉伸模具进行贴合接合，该模具与用于施加 护套材料围绕应变构件的暴露表面。 挤出时间短，然后进行淬火。 绝缘芯由单个或多个离散导体组成，具有或不具有单独的绝缘，并被电介质包围。 在本发明的替代形式中，应变构件构成电缆芯，并且围绕芯挤压绝缘材料的护套。 随后，至少一个电导体被布置在夹套芯的外部，并且导体又可以用包裹物等覆盖，以将导体保持在电缆上的适当位置。

    Electromechanical cable deployable in a no-torque condition, and method
    3.
    发明授权
    Electromechanical cable deployable in a no-torque condition, and method 失效
    机电电缆在无扭矩状态下部署，方法

    公开(公告)号：US4006289A

    公开(公告)日：1977-02-01

    申请号：US524665

    申请日：1974-11-18

    申请人： Norman P. Roe ,  Gordon W. Brown

    发明人： Norman P. Roe ,  Gordon W. Brown

    IPC分类号： B65H55/00 ,  H01B7/18 ,  H01B7/22 ,  H01B17/22

    CPC分类号： H01B7/182 ,  B65H55/00 ,  H01B7/221

    摘要： An electromechanical cable is adapted for deployment along a generally straight path and when thus deployed to be substantially free of torsional reactions resulting from changes in tensile stress in the longitudinal direction of the cable. The cable includes a plurality of strain members arranged in an annular configuration. When the cable lies straight and untwisted the strain members are also straight, parallel to the longitudinal axis of the cable and parallel to each other. The strain members are loosely confined within the cable structure so that when the cable is subsequently twisted they are free to move into helical positions relative to the axis of the cable.The cable is first wound into a coil and concurrently pretwisted about its own axis by approximately 360.degree. for each loop of the coil. After being transported to the deployment site, the cable is pulled off the coil without relative rotation between the delivered end of the cable and the coil, so that the pretwist of the cable is relieved. The cable is then ready to carry a varying longitudinal tensile load without inducing significant torque or twisting action.In one form of the invention the strain members are sandwiched between a sheath and an insulated core. In another form of the invention the strain members are disposed centrally of the cable and constitute a part of its inner core.

    摘要翻译： 机电电缆适于沿着大致直线的路径展开，并且当这样部署时基本上不受由电缆的纵向方向的拉伸应力变化而引起的扭转反应。 电缆包括以环形构造布置的多个应变构件。 当电缆平直并且解开时，应变构件也是直的，平行于电缆的纵向轴线并且彼此平行。 应变构件松动地限制在电缆结构内，使得当电缆随后被扭曲时，它们可以相对于电缆的轴线自由地移动到螺旋位置。