Electric cable resistant to water penetration
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United States of America Patent
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Aug 8, 2006
Grant Date -
Apr 8, 2004
app pub date -
Dec 15, 2000
filing date -
Dec 20, 1999
priority date (Note) -
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Abstract
Electric cable (20), in particular for power transmission or distribution at medium or high voltage, comprising a metallic screen (5) and a water swellable layer (21) capable of forming a barrier to the water penetration provided in a position radially external to said metallic screen (5). Said water swellable layer (21) is made of an expanded polymeric material in which a water swellable material preferably in the form of powder, is embedded.
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