Fire resistant coaxial cable
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United States of America Patent
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Sep 26, 2017
Grant Date -
N/A
app pub date -
Dec 20, 2016
filing date -
Dec 20, 2016
priority date (Note) -
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Abstract
A fire-resistant coaxial cable is described in which the dielectric between the central conductor and outer coaxial conductor can ceramify under high heat. The dielectric is composed of a ceramifiable silicone rubber, such as that having a polysiloxane matrix with inorganic flux and refractory particles. An outer wrap of ceramic fiber yarn surrounds the outer conductor and continues to insulate it from the outside if a low smoke zero halogen jacket burns away. Embodiments include those with durable corrugated outer conductors or flexible braided outer conductors. Methods of testing and installation are described.
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