Method and apparatus for making SZ-twisted communications cable
    1.
    发明授权
    Method and apparatus for making SZ-twisted communications cable 失效
    制作SZ扭绞通信电缆的方法和装置

    公开(公告)号:US3884025A

    公开(公告)日:1975-05-20

    申请号:US38724873

    申请日:1973-08-10

    Applicant: SIEMENS AG

    CPC classification number: H01B13/0235 H01B13/0264

    Abstract: An improved communications cable and a method of making the same so as to minimize cross talk between units within the cable, in which a plurality of SZ stranded units are twisted to form groups which are then formed into layers so that adjoining units in any one layer have a different distribution function of length of lay and/or distance of reversal points of twist directions and with adjacent units in one layer similarly have different distribution function of length of lay and/or distance between reversal points than units in adjacent layers.

    Abstract translation: 一种改进的通信电缆及其制造方法以使电缆内的单元之间的串扰最小化,其中多个SZ绞合单元被扭曲形成组,然后将其形成层,使得任何一层中的相邻单元 具有捻合长度和/或扭转方向的反转点距离的不同分布函数和与一个层中的相邻单元类似地具有与相邻层中的单位相比的折叠长度和/或反转点之间的距离的分布函数不同的分布函数。

    Method of manufacturing a cable using SZ twisting devices
    2.
    发明授权
    Method of manufacturing a cable using SZ twisting devices 失效
    使用SZ加捻装置制造电缆的方法

    公开(公告)号:US3921381A

    公开(公告)日:1975-11-25

    申请号:US34177373

    申请日:1973-03-15

    Applicant: SIEMENS AG

    CPC classification number: H01B13/0271 D07B2201/2035

    Abstract: An improved method of twisting cables, particularly communications cables, made up of a plurality of cable units so as to maintain a high manufacturing rate while minimizing electrical coupling between cable units in which the process parameters, controlling a known SZ reversing twisting devices which twist the cable units, are randomly varied to cause the sums and differences of the twist, d and the number of reversals per unit length, a, to be continuously and alternatly increased and decreased by at least 0.5 percent about a mean value and so that one of the sum (d+a) and the difference (d-a) of each unit differs from that of at least one other unit by less than 10 percent.

    Abstract translation: 一种改进的电缆扭绞方法,特别是通信电缆,其由多个电缆单元组成,以便在最小化电缆单元之间的电耦合的同时保持高的制造速率,其中控制已知的SZ反转扭转装置, 电缆单元随机变化,使得每单位长度a的扭转数d和反转次数α的和和差异相对于平均值连续地和交替地增加和减少至少0.5%,并且使得 每个单位的总和(d + a)和差(da)与至少一个其他单位的差值小于10%。

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