Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1985-11-15
1989-02-21
Lee, John D.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
264 15, G02B 644
Patent
active
048059811
ABSTRACT:
A submarine telecommunications cable includes a plurality of optical fibers in the bore of an orientated plastics strength member. The cable may have an average density of 0.9 to 4.0 and preferably a neutral buoyancy whereby most of the weight of the cable is carried by the sea. This reduces tension in the cable during laying. The bore of a submarine cable is filled with a solid elastomeric embedding medium which occupies the space between the fibers. This gives a void-free structure which assumes ambient pressure. The strength member may be made from orientated polyethylene. The cable is preferably buried in the sea bed during use.
REFERENCES:
patent: 3766307 (1973-10-01), Andrews, Jr.
patent: 4113349 (1978-09-01), Stiles
patent: 4409154 (1983-10-01), Grenat
patent: 4469401 (1984-09-01), Yamazaki et al.
"Plastics in Fibre Optical Cables", Plastics and Rubber International by: W. E. Simpson, pp. 145-149, Aug. vol. 5, No. 4.
IEEE International Conference on Communications, vol. 3, Jun. 13th-17th 1982, pp. 7D.4.1-7D.4.3, L. E. Noane et al, "Submarine Optical Fibre Cable Development in France."
British Telecommunications plc
Lee John D.
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