Coaxial cable for plenum applications
First Claim
Patent Images
1. A shielded coaxial cable which complies with the flame spread and smoke optical density requirements of UL 910 for a Plenum Cable, said coaxial cable consisting essentially of:
- a core member includinga central conductor; and
a solid dielectric material, said solid dielectric material surrounding the length of said central conductor;
an outer conductor shield surrounding said dielectric material; and
a jacket comprising a halogenated polymer having a heat of combustion between approximately 2300 and 7000 BTU per pound and including a free radical scavenger for flame retardance.
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Accused Products
Abstract
A coaxial cable with standard coaxial structure of central conductor, foamed polyethylene dielectric, and outer conductor and having a jacket that provides sufficient flame resistance and smoke generation to allow the cable to be used in plenum spaces. The jacket includes a halogenated polymer with a heat of combustion less than 7000 BTU per pound and including a free-radical scavenger.
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Citations
18 Claims
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1. A shielded coaxial cable which complies with the flame spread and smoke optical density requirements of UL 910 for a Plenum Cable, said coaxial cable consisting essentially of:
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a core member including a central conductor; and a solid dielectric material, said solid dielectric material surrounding the length of said central conductor; an outer conductor shield surrounding said dielectric material; and a jacket comprising a halogenated polymer having a heat of combustion between approximately 2300 and 7000 BTU per pound and including a free radical scavenger for flame retardance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A shielded coaxial cable which complies with the flame spread and smoke optical density requirements of UL 910 for a Plenum Cable, said coaxial cable consisting essentially of:
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a core member including a central conductor; and a dielectric material; said dielectric material comprising foamed polyethylene encapsulating the length of said central conductor; an outer conductor shield surrounding said dielectric material; and a jacket surrounding said outer conductor comprising a halogenated polymer having a heat of combustion between approximately 2300 and 7000 BTU per pound and including a free radical scavenger for flame resistance, said jacket having a thickness from between about 0.017 to 0.025 inches. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A shielded coaxial cable which complies with the flame spread and smoke optical density requirements of UL 910 for a Plenum Cable, said coaxial cable consists essentially of:
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a core member including a central conductor; and a dielectric material comprised of foamed polyethylene encapsulating the length of said central conductor; an outer conductor shield of braided copper surrounding said dielectric material; and a jacket surrounding said outer conductor comprising a halogenated polymer, said halogenated polymer comprising a copolymer of vinylidene fluoride and 20% chlorotrifluoroethylene and a smoke suppressant, said halogenated polymer having a heat of combustion between approximately 2300 and 7000 BTU per pound and including a free radical scavenger for flame retardance, said jacket having a thickness from between about 0.017 to 0.025 inches.
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Specification