Communication wire
First Claim
Patent Images
1. A data transmission cable comprising:
- four or fewer twisted pairs of data transmission conductors, the four or fewer twisted pairs of data transmission conductors defining a core; and
a jacket defining an interior passage that extends along a length of the jacket, the interior passage including a central region including air and a peripheral region, the four or fewer twisted pairs of data transmission conductors being positioned within the central region, the air in the central region occupying a volume between the four or fewer twisted pairs of conductors, the peripheral region of the interior passage including a plurality of channels that are circumferentially spaced relative to one another about the central region of the interior passage, the channels including air, the air in the channels being in fluid communication with the air in the volume of the central region between the four or fewer twisted pairs of data transmission conductors, the number of channels being greater than the number of twisted pairs of data transmission conductors, and a depth along a radial direction of each channel of the plurality of channels being greater than a diameter of each data transmission conductor of the four or fewer twisted pairs of data transmission conductors.
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Abstract
The present invention relates to an improved isolated core or insulated conductor with a low dielectric constant and reduced materials costs. Apparatuses and methods of manufacturing the improved isolated core or insulated conductor are also disclosed.
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Citations
20 Claims
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1. A data transmission cable comprising:
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four or fewer twisted pairs of data transmission conductors, the four or fewer twisted pairs of data transmission conductors defining a core; and a jacket defining an interior passage that extends along a length of the jacket, the interior passage including a central region including air and a peripheral region, the four or fewer twisted pairs of data transmission conductors being positioned within the central region, the air in the central region occupying a volume between the four or fewer twisted pairs of conductors, the peripheral region of the interior passage including a plurality of channels that are circumferentially spaced relative to one another about the central region of the interior passage, the channels including air, the air in the channels being in fluid communication with the air in the volume of the central region between the four or fewer twisted pairs of data transmission conductors, the number of channels being greater than the number of twisted pairs of data transmission conductors, and a depth along a radial direction of each channel of the plurality of channels being greater than a diameter of each data transmission conductor of the four or fewer twisted pairs of data transmission conductors. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A data transmission cable comprising:
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four or fewer twisted pairs of data transmission conductors, each of the four or fewer twisted pairs of data transmission conductors being covered by a separate insulation layer, the four or fewer twisted pairs of data transmission conductors defining a core; and a jacket defining an interior air passage that extends along a length of the jacket, the interior air passage having a central region including air and a peripheral region including air, the core being located within the central region of the interior air passage with the core being exposed to the air in the central region, the peripheral region of the interior air passage including a plurality of channels that are circumferentially spaced relative to one another about the core, the plurality of channels including air, the air in the plurality of channels being in fluid communication with the air in the central region to which the core is exposed, the jacket including an inner portion at which the plurality of channels is defined and an outer portion that surrounds the inner portion, the number of channels being greater than the number of twisted pairs of data transmission conductors, and a depth along a radial direction of each channel of the plurality of channels being greater than a combined diameter of a data transmission conductor of the four or fewer twisted pairs of data transmission conductors and the separate insulation layer covering the data transmission conductor. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A data transmission cable comprising:
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four or fewer twisted pairs of data transmission conductors, the four or fewer twisted pairs of data transmission conductors defining a core; and a jacket defining a single passage with a central region in fluid communication with a peripheral region, the four or fewer twisted pairs of data transmission conductors being positioned within the central region, the jacket including an inner portion and an outer portion, the inner portion of the jacket including a plurality of projections that project inwardly from the outer portion of the jacket, the projections having inner unattached ends that define an outer boundary of the central region of the single passage, the jacket defining air channels between the projections, the four or fewer twisted pairs of data transmission conductors being exposed to air within the air channels, the air channels each being visible when the data transmission cable is viewed in transverse cross-section, the air channels forming the peripheral region of the single passage, the number of air channels being greater than the number of twisted pairs of conductors, and a depth along a radial direction of each air channel being greater than a diameter of each data transmission conductor of the four or fewer twisted pairs of data transmission conductors. - View Dependent Claims (19, 20)
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Specification