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    • 1. 发明授权
    • Local area network cable
    • 局域网电缆
    • US4755629A
    • 1988-07-05
    • US910848
    • 1986-09-24
    • Richard D. BeggsHarold W. FriesenDavid M. MitchellWendell G. NuttPalmer D. Thomas
    • Richard D. BeggsHarold W. FriesenDavid M. MitchellWendell G. NuttPalmer D. Thomas
    • H01B11/02H01B11/08
    • H01B11/085H01B11/02
    • A cable (20) which is particularly suited to the transmission of substantially error-free data at relatively high rates over relatively long distances includes at least two pairs of individually insulated conductors (42--43). Each pair of individually insulated conductors is enclosed individually in its own tubular member (51) comprising a plastic material. A metallic shield (60) encloses the tubular members, and in a preferred embodiment, a plastic jacket (80) encloses the shield. In the preferred embodiment, two pairs of voice communications conductors are disposed at opposed locations between the shield and the jacket. The thickness of the tubular member is such that each insulated conductor of each twisted pair is caused to be spaced from the shield a distance which is not less than one half the diameter of the metallic wire portion of each pair enclosed by the tubular member.
    • 特别适用于在相当长的距离上以相对高的速率传输基本上无差错的数据的电缆(20)包括至少两对独立绝缘的导体(42-43)。 每对单独绝缘的导体被单独封闭在其自己的包括塑料材料的管状构件(51)中。 金属屏蔽件(60)围绕管状构件,并且在优选实施例中,塑料护套(80)围绕屏蔽件。 在优选实施例中,两对语音通信导体设置在屏蔽和外壳之间的相对位置处。 管状构件的厚度使得每个双绞线的每个绝缘导体与屏蔽件隔开不少于由管状构件包围的每对的金属线部分的直径的一半的距离。