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1. 发明授权

US4755629A Local area network cable 失效
标题翻译：局域网电缆
公开(公告)号：US4755629A
公开(公告)日：1988-07-05
申请号：US910848
申请日：1986-09-24
申请人： Richard D. Beggs , Harold W. Friesen , David M. Mitchell , Wendell G. Nutt , Palmer D. Thomas
发明人： Richard D. Beggs , Harold W. Friesen , David M. Mitchell , Wendell G. Nutt , Palmer D. Thomas
IPC分类号： H01B11/02 , H01B11/08
CPC分类号： H01B11/085 , H01B11/02
摘要： 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.
摘要翻译：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。

2. 发明授权

US4697051A Data transmission system 失效
标题翻译：数据传输系统
公开(公告)号：US4697051A
公开(公告)日：1987-09-29
申请号：US760867
申请日：1985-07-31
申请人： Richard D. Beggs , Harold W. Friesen , Wendell G. Nutt
发明人： Richard D. Beggs , Harold W. Friesen , Wendell G. Nutt
IPC分类号： H01B11/02 , H04B3/00 , H01B11/04 , H01B11/10
CPC分类号： H01B11/02 , H04B3/00
摘要： A parallel data transmission system (20) comprises a cable (40) which is capable of balanced mode transmission but which is driven in an unbalanced mode. The cable includes a plurality of twisted pairs of individually insulated conductors (42--42) enclosed by a metallic shield (54). The twist lengths are relatively short to cause the pairs to be decoupled sufficiently from one another to allow substantially error-free, parallel transmission over relatively long distances. Interposed between the core and the shield is a spacing member (52) which has a relatively low dielectric constant. Receiving facilities are provided for detecting whether the level of transmitted signals is above or below predetermined threshold values and for converting the received signals into one of two or more logic levels. Advantageously, this system increases substantially the distances over which substantially error-free transmission in an unbalanced mode can be accomplished.
摘要翻译：并行数据传输系统（20）包括能够平衡模式传输但以不平衡模式驱动的电缆（40）。电缆包括由金属屏蔽（54）包围的多个单独绝缘的导体（42-42）的双绞线。扭转长度相对较短，导致成对彼此充分地分离，以允许在相对长的距离上实质上无差错的并行传输。芯与屏蔽之间的间隔部件（52）具有较低的介电常数。提供接收设备，用于检测发送信号的电平是否高于或低于预定阈值，并将接收的信号转换成两个或多个逻辑电平之一。有利的是，该系统基本上增加了可以在不平衡模式下实现基本无差错传输的距离。

3. 发明授权

US5162609A Fire-resistant cable for transmitting high frequency signals 失效
标题翻译：用于传输高频信号的防火电缆
公开(公告)号：US5162609A
公开(公告)日：1992-11-10
申请号：US739122
申请日：1991-07-31
申请人： Luc W. Adriaenssens , Richard D. Beggs , Harold W. Friesen , Wendell G. Nutt
发明人： Luc W. Adriaenssens , Richard D. Beggs , Harold W. Friesen , Wendell G. Nutt
IPC分类号： H01B7/295 , H01B11/00 , H01B11/02
CPC分类号： H01B7/295 , H01B11/02
摘要： A fire-resistant cable (20) which is suitable for the transmission of high frequency signals in a local area network includes a core which comprises a plurality of twisted pairs (22,22) of insulated conductors (24,24) and a jacket (35). Each insulated conductor of each pair includes an elongated metallic member (26) and an insulation system (28). The insulation system which is characterized by a suitable low dissipation factor includes dual layers, an outer one of which includes a flame-retardant plastic material. Also, the insulation system is characterized by a suitably low dielectric constant and by compatibility with a relatively short pair twist scheme. In one embodiment, the insulation system includes an inner layer (30) of a polyolefin plastic material and an outer layer (32) of a flame-retardant polyolefin plastic material. The jacket comprises a plastic material characterized by a suitably low dissipation factor and dielectric constant and in a preferred embodiment comprises a flame-retardant polyolefin plastic material. Preferably, the twist length of each pair does not exceed the product of about forty and the outer diameter of an insulated conductor of each pair.

4. 发明授权

US6096977A High speed transmission patch cord cable 有权
标题翻译：高速传输跳线电缆
公开(公告)号：US6096977A
公开(公告)日：2000-08-01
申请号：US146806
申请日：1998-09-04
申请人： Richard D. Beggs , Daryle P. Donner , David R. Hawkins , Stephen T. Zerbs
发明人： Richard D. Beggs , Daryle P. Donner , David R. Hawkins , Stephen T. Zerbs
IPC分类号： H01B11/00 , H01B7/28
CPC分类号： H01B11/005
摘要： An electrical cable is disclosed in which at least two pairs of insulated conductors are bound by a substantially circular jacket. The conductors in one of the pairs are twisted or rotated about one another in a spiral pattern at a frequency corresponding to a first twist lay or length. The conductors in a second pair are also twisted about one another at a frequency corresponding to a second twist lay. Finally, the two pairs of conductors are stranded about one another at a frequency corresponding to a strand lay. The substantially circular jacket resists the tendency to jam cable processing machines (e.g., a connectorization machine) when being dispensed from a pay-off reel, which is a common problem in prior art patch cord designs. As a result, the cable reduces manufacturing costs. In addition, the cable provides improved electrical performance, as measured by several performance standards, over prior art cable designs.
摘要翻译：公开了一种电缆，其中至少两对绝缘导体由基本上圆形的外壳结合。一对中的导体以对应于第一扭曲或长度的频率以螺旋图案彼此扭转或旋转。第二对中的导体也以对应于第二捻线的频率彼此扭转。最后，两对导体以对应于绞线的频率彼此绞合。基本上圆形的外壳在从发放卷轴分配时阻止电缆加工机（例如，连接机）的倾向，这是现有技术的接插线设计中的常见问题。因此，电缆降低了制造成本。此外，根据现有技术的电缆设计，电缆提供了通过若干性能标准测量的改进的电性能。

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