Abstract: An electric and/or optical submarine cable arrangement which bridges the weight/strength gap that exists between armoured and unarmoured cable. A stranded armour layer (6) comprises alternate strands of steel wire (7) and polymeric filler (8). Such a cable has sufficient strength to support a section of heavy armoured cable joined to it during laying in water of a depth exceeding 2 km, but light enough that an unarmoured cable can support it in deep water.

Abstract: An aerial optical fiber cable comprises a glass-fibre-reinforced plastics core member (1) having a slot (2) with a zero lay angle accommodating loose-tubed optical fibres (3, 3A) and sheathed with a longitudinal tape (13) bound with a binder (915) and over-sheathed with a plastics extrusion (14). The cable is self-supporting and completely non-metallic and is suitable for telecommunications and data transmission services alongside overhead power transmission systems. An alternative embodiment (FIG. 2) is not self-supporting but is similar in design and adapted for support from a support wire, and another embodiment has a rectangular slot housing one or more ribbon elements. The cable is simple and cheap to make.

Abstract: An aerial optical fibre cable for installation alongside a power distribution system is made with a surface-slotted core acting as strength member and armouring and housing a ribbon optical element. The slot is filled with a soft thixotropic water blocking gel. The slot is closed and sealed with a close-fitting cap which is bound in position with a yarn and the core then driven several times around a capstan with the cap facing outward to induce an excess length of ribbon element in the core when it leaves the capstan. Plastics material is then extruded over the core to provide a tight-fitting sheath.

Abstract: An aerial optical fiber cable comprises a glass-fibre-reinforced plastics core member (1) having a slot (2) with a zero lay angle accommodating loose-tubed optical fibres (3, 3A) and sheathed with a longitudinal tape (13) bound with a binder (915) and over-sheathed with a plastics extrusion (14). The cable is self-supporting and completely non-metallic and ia suitable for telecommunications and data transmission services alongside overhead power transmission systems. An alternative embodiment (FIG. 2 ) is not self-supporting but is similar in design and adapted for support from a support wire, and another embodiment has a rectangular slot housing one or more ribbon elements. The cable is simple and cheap to make.