| 摘要 |
A method of making continuous lengths of a shielded electrical conductor having a rigid exterior sheath and at least one conductor element held in place therein and surrounded by finely divided and compacted electrical insulation. A supply of metal strip material is continuously removed from a storage roll, and cleaned and positioned by a guide so that, as the strip is formed into a tube, the tube will surround one or more wires or conductive elements which are simultaneously being removed from a storage roll, cleaned, and positioned within the tube being formed by another portion of the guide. During one stage of the tube formation, the insulating material is cleaned and deposited continuously on the strip material from which the tube is being formed, so that the tube will enclose the insulation, and the insulation will in turn aid in positioning the wire within the tube. After formation of the shielded conductor in this manner, the entire conductor is reduced in diameter to compact further the insulation. The formed lengths may thereafter be cut to desired lengths for use as shielded cable, electrical resistance heating elements or thermocouples for temperature detection.
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