Communication systems for transportation undertakings

Details Communication systems for transportation undertakings Communication systems for transportation undertakings

1979-11-08

1981-07-21

Bookbinder, Marc E.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

174102SP, 174120SR, 174121A, 333237, H04B 360, H01B 718, H01B 1118, H01Q 1320

Patent

active

042802253

ABSTRACT:
A radiating cable communication system for a transportation undertaking is given useful fire-survival characteristics by incorporating on the surface of the cable dielectric, inside the outer conductor and so in the electric field, of the mica paper tape. This is much more effective than, for instance, using flame-retardant grades of polyethylene for the dielectric and flame-retardant grades of PVC for the sheath and, surprisingly, it has less effect on the electrical transmission characteristics of the cable.

REFERENCES:
patent: 3629707 (1971-12-01), Baba et al.
patent: 3781725 (1973-12-01), Yoshida et al.
patent: 3810186 (1974-05-01), Nakahara et al.
patent: 3823255 (1974-07-01), La Gase et al.
patent: 3949329 (1976-04-01), Martin
patent: 3971882 (1976-07-01), Alia
patent: 4034153 (1977-07-01), Andres et al.

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