Flame retardant plenum cable

Details Flame retardant plenum cable Flame retardant plenum cable

2007-09-04

2007-09-04

Mayo, III, William H. (Department: 2831)

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

C174S12000C, C174S1200SC

Reexamination Certificate

active

10565914

ABSTRACT:
The present invention is a flame retardant cable having an insulated conductor and at least two insulation layers. The cable demonstrates a composite dielectric constant less than or equal to about 2.6 and a composite dissipation factor less than or equal to 0.005 even though one of the insulation layers has a dielectric constant greater than 2.6 or a dissipation factor greater than 0.005. The presently invented cable is achieved with a non-halogenated polyolefin as an insulation layer polymer, where the polyolefin having relatively poor dielectric/dissipative properties and the insulation layer composition being substantially free of halogenated or antimony trioxide flame retardant additives.

REFERENCES:
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patent: 5462803 (1995-10-01), Wessels
patent: 5670748 (1997-09-01), Gingue et al.
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patent: 6255594 (2001-07-01), Hudson
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patent: 2003/0019655 (2003-01-01), Gagnon
patent: 4300795 (1994-07-01), None
patent: WO98/02889 (1998-01-01), None

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