Societe Anonyme Dite : Les Cables De Lyon

Les Cables De Lyon S.a.

Rene Dubost

Bernard Grenat

Georges Mignien

Francis Gauthier

An optical telecommunications cable comprising an outer tube of circular cross-section made of aluminum covered with a plastics material and a plurality of strands of circular cross-section inside the outer tube, the strands being assembled tangentially to one another and each of the strands being constituted by an elementary circular structure covered by a tubular covering made of plastic material and reinforced by three strength members disposed at 120.degree. in the covering. The elementary circular structure comprises a substantially rectangular matrix structure, surrounded by compressible filler tapes made circular by being bound in a paper or plastic binding tape wound helically thereabout, the matrix structure being constituted by a plurality of tape components with ridges and troughs stacked and fastened to each other and including hexagonal cells containing respective optical conductors, each of the tape components being composed of two thin aluminum tapes with troughs, whose opposite surfaces are coated with polyethylene and are welded longitudinally by heat softening of the polyethylene.

Optical telecommunications cable

A multiple optical fibre cable in which the fibres can be used separately for long distance signal transmission comprises a central core round which the optical conductors are concentically disposed. Each optical conductor is constituted by an optical fibre protected by a first layer or covering of polyamide and a second layer or sheath of polyethylene. In order to avoid distortion of the optical fibre, the second layer or sheath is stretched. Application: Optical telecommunications cables.

Optical fibre cable and a method of manufacture

A covering of thermoplastic material applied to a bare portion of optical fibre by pressure molding. The device for performing the pressure molding includes a micro injection cylinder and a mold having a distribution chamber with injection holes distributed over the fibre to be covered.

Device for the protective covering of optical fibres

A taping device permitting tension-free winding of tapes. It comprises guide hooks between which the tape passes disposed as close as possible to the product to be taped. Applications: manufacture of optical fibre telecommunications cables and special cables.

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Faverges de la Tour, France

Rene Dubost