High count transmission media plenum cables which include non-ha

Details High count transmission media plenum cables which include non-ha High count transmission media plenum cables which include non-ha

1992-02-20

1993-04-13

Ullah, Akm E.

Optical waveguides

Optical transmission cable

Loose tube type

G02B 644

Patent

active

052029468

ABSTRACT:
A cable which may be used in buildings in concealed areas such as in plenums or in riser shafts includes a core (22) which in a metallic conductor cable includes at least twenty-five transmission media each of which is enclosed with a non-halogenated plastic material. The core is enclosed with a jacket (28) which also is made of a non-halogenated plastic material. The non-halogenated plastic material of the insulation is selected from the group consisting of a polyetherimide and a silicone-polyimide copolymer, or a blend comprising the polyetherimide and the silicone-polyimide copolymer. For the jacket, the plastic material includes a blend composition of silicone-polyimide copolymer and a flame retardant and smoke suppressant system comprising titanium dioxide and zinc borate.

REFERENCES:
patent: 4941729 (1990-07-01), Hardin et al.
patent: 5001304 (1991-03-01), Hardin et al.
patent: 5024506 (1991-06-01), Hardin et al.
patent: 5074640 (1991-12-01), Hardin et al.

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