Cables Pirelli

France Telecom

Philippe Lesueur

Christian Liegeois

Philippe Egon

Bruno Leguen

Alain Pecot

A splice for crimping optical fibers includes two half-cylinders, a support block and a pressing block, which are mutually pressed by a crimping cylinder. The support block is provided with a longitudinal groove for receiving the stripped fiber and bears capped edges. The capped edges and stops are symmetrically mounted on either side of the longitudinal axis of the half-cylinders and are designed for maintaining axis of the half-cylinders and are designed for maintaining a small space between the two half-cylinders in the zone where they are located.

Mechanical splice for crimping optical fibre

The tool is constituted, on one hand, by a lower plate (12) traversed by a calibrated orifice, between an admission chamber (14) equipped with a roller (18) and a cutting plate (15) and, on the other hand, by an upper cover (22) also pierced by an opening (24) emerging in an inlet chamber (26) equipped with a roller (28). The upper cover is placed above the lower plate at distance that is variable so that the calibrated orifice and the opening are aligned, or can be offset heightwise.

Process for mechanically removing the encapsulating material from a

The device comprises a central spicing body serving to connect in situ two cable end plugs which fit into the splicing body. The central body has lower rails hollowed out therein and bears lateral shoulders for guiding and locking the end plugs constituted by a lower part and by an upper part fixed to one another by a press fit. The device has application in the in situ splicing of optical fibers.

Multi-channel mechanical splicing device for fiber-optic cables

To lay an underground cable, a first drum is stationarily positioned and supplies the cable to a trench that is dug in the ground. A hauling pig is connected to the leading end of the cable. A second drum, mounted to a movable tractor, supplies a tube to the trench and is intended to receive the cable. The tractor also has a plowshare mounted to its forward end for forming the trench as the tractor moves. A compressor is connected to a tube section, rearwardly of the pig, for propelling the leading end of the cable to a predetermined point in a turn of a rolled tube as stored on the second drum. In the event an obstacle is encountered by the tractor, the compressor is interrupted and a length of tube, at least as long as one turn on the second roll, is payed out from the second drum and temporarily remains unoccupied by cable. The payed out length of tube is cut at an end so that the tractor becomes free to move around the obstacle. The payed out length is repositioned to negotiate the obstacle and the cut end is then spliced to the corresponding end of the tube on the second drum. Restoration of compressor operation continues to propel the leading end of the cable to the predetermined point in the turn of the rolled tube on the second drum.

Growing community of inventors

Tregastel, France

Philippe Lesueur