Optical fibre sheathing tube
AssigneeAnthony J. Stockman
InventorsAnthony J. Stockman, Simon C. T. Benton
Life of this patent
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Abstract
A sheathing for optical fibres and for optical fibre cables comprises a continuous length of tubing with the tubing walls being designed to allow the tube to be bent to a predetermined radius but to hinder its bending to a radius smaller than the predetermined radius. The tube walls (12) include portions (18) which are spaced apart when the tube is straight, but abut one another at (20) when the tube is bent to the predetermined radius.
Claims14
An optical fibre sheathing comprising a continuous length of tube, the tube being formed by extrusion and having a tube wall bounding a tube bore for carrying a length of fibre, wherein the outer surface of the tube wall has circumferential grooves formed in the wall thickness and around the whole outer surface of the tube to permit bending of the tube in any plane until a predetermined radius of curvature has been reached, but to hinder bending of the tube beyond the predetermined radius of curvature to an equal extent in any plane.
Dependencies are inferred from the claim text.