Abstract: A resistance element (19) for a device for shrinking shrinkable sleeves comprises an elongate electrical conductor extending in a zigzag pattern and bent to a tunnel shape. The shrinkable sleeve including for example an optical fiber enclosed therein is placed in that region of the resistance element (19), which corresponds to approximately the geometric axis of the upper semi-cylindric portion of the tunnel shape. The resistance element (1) has attachment pins (33) and contact and attachment pins (35) at its front and rear sides respectively intended to be placed in corresponding recesses in a lid of the device. The rear contact and attachment pins (35) have portions (39) intended for contact with elastic, electrically conducting contact pins with which the resistance element (19) comes in contact, when the lid is folded down to perform the shrinking operation.

Abstract: A resistance element (19) for a device for shrinking shrinkable sleeves comprises an elongate electrical conductor extending in a zigzag pattern and bent to a tunnel shape. The shrinkable sleeve including for example an optical fiber enclosed therein is placed in that region of the resistance element (19), which corresponds to approximately the geometric axis of the upper semi-cylindric portion of the tunnel shape. The resistance element (1) has attachment pins (33) and contact and attachment pins (35) at its front and rear sides respectively intended to be placed in corresponding recesses in a lid of the device. The rear contact and attachment pins (35) have portions (39) intended for contact with elastic, electrically conducting contact pins with which the resistance element (19) comes in contact, when the lid is folded down to perform the shrinking operation.

Abstract: For removal of the protective coating of cables, in particular optical 12-fiber ribbons and other optical multi-fiber ribbons, a tool has several movable segments that each remove a portion of the coating. Each of the segments has a pair of blades positioned in opposition to cut into the cable coating from opposite sides, dividing the coating to be stripped into small pieces. The segments are moved longitudinally along the cable to strip the cut coating. The segments are linked together for a chain-reaction type movement, that is, movement of any one segment begins only when the preceding segment has moved a set distance. Thus, in a single operation, the coating is stripped in small pieces, and the force applied to the tool operates sequentially on small pieces cut by each segment, which lowers the force needed to be applied to the tool.

Abstract: When splicing optical fibers by melt-fusioning in an electric arc, the electric arc is started, in order to give the fiber splice a large strength, before the ends of the fibers have entered the arc and before they have contacted each other. The arc is in this stage switched on with a low intensity which is increased in the stage when the fiber ends are fusioned to each other. When the electric arc is established having this low intensity and immediately before the contact of the end surfaces and the melt-fusioning, the fiber ends are finely aligned with each other in the lateral direction. It can be performed by way of the optical system and the controller means which are provided in a commercially available fiber welding apparatus, and the fine alignment will give the splice a low attenuation. For standard fibers of the single-mode type a welding current through the electrodes of approximately 6.5 mA is suitable.