Shielding tape for plenum rated cables
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United States of America Patent
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Sep 9, 1997
Grant Date -
N/A
app pub date -
May 20, 1994
filing date -
May 20, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plenum rated cable having a core that includes a transmission medium of one or more copper or tin-copper conductors having thereon an insulating layer of an ethylene-chloro tetrafluoro ethylene composition. A first shield surrounds the core and extends longitudinally within and parallel to the length of the cable and includes a first layer of aluminum material and a second layer of cellulose acetate or polypropylene. The first and second layers are bonded together. A second shield surrounds the first shield and extends longitudinally within and parallel to the length of the cable and includes a first layer of aluminum and a second layer of cellulose acetate or polypropylene. The first and second layers are bonded together. A drain wire drains leakage within the cable generated from the current and allows for easy termination of the shield to the connector. A thermoplastic jacket encloses the drain wire and longitudinally surrounds the second shield and is made of a polyvinyl chloride composition.
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