Filter line cable featuring conductive fiber shielding
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United States of America Patent
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Nov 16, 1993
Issued Date -
N/A
app pub date -
Jun 19, 1992
filing date -
Feb 19, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention features a new 'filter line' cable having a shield layer of metallized, high-tensile strength fibers. The filter line cable has a conductive core having a primary insulation layer. Over the primary insulation is a filtering layer made up of ferromagnetic particles (ferrite o magnetite) within a polymeric matrix such as Viton, a fluorinated elastomeric polymer. The filtering layer provides the 'filter line' protection against internal RFI and microwave interferences traveling down the wire. A shield of metal-coated, high-tensile strength fibers (such as nylon, aramid, etc.) is woven or served to provide a flexible mesh layer of about 95% coverage; this is placed over the filtering layer. The shield layer provides protection against external EMI interference signals. An insulating-jacket layer is placed over the shield layer; it is made of materials such as Teflon, Kapton, fluorinated polyethylenes, carbon-filled fluorinated polyethylenes and combinations thereof, etc.
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