Method of making electric conductor

Claim 2

In a method of making an electrical conductor wherein a plurality of glass filaments are coated with a thermally curable liquid dispersion of conductive particles, the resistance of the conductor being determined by the degree of curing of the filament coating, the steps of thermally curing said coated filament as a flat ribbon, spirally wrapping an additional non-coated glass element about said ribbon under tension to obtain a cylindrical conductor, continuously monitoring the resistance of said conductor, and varying the extent of curing of said filament coating in accordance with the monitored resistivity to maintain the resistance of the cylindrical conductor substantially constant.

Claim 3

IN A METHOD OF MAKING AN ELECTRICAL CONDUCTOR WHEREIN A ROVING COMPRISED OF A PLURALITY OF GLASS FILMENTS IS COATED WITH A THERMALY CURABLE LIQUID DISPERSION OF CONDUCTIVE PARTICLES, THE RESISTANCE OF THE CONDUCTOR BEING DETERMINED BY THE DEGREE OF CURING OF THE COATING, THE STEPS OF WRAPPING THE COATED ROVING IN A PLURALITY, OF PASSES ABOUT A PLURALITY OF SPACED CURING ROLLS, TENNSIONING THE ROVING SUFFICIENTLY TO FLATTEN THE ROVING INTO A RIBBON-LIKE CONFIGURATION IN GOOD

Claim 4

IN A METHOD OF MAKING AN ELECTRICAL CONDUCTOR WHEREIN A ROVING COMPRISED OF A PLURALITY OF GLASS FILMENTS IS COATED WITH A THERMALY CURABLE LIQUID DISPERSION OF CONDUCTIVE PARTICLES, THE RESISTANCE OF THE CONDUCTOR BEING DETERMINED BY THE DEGREE OF CURING OF THE COATING, THE STEPS OF WRAPPING THE COATED ROVING IN A PLURALITY, OF PASSES ABOUT A PLURALITY OF SPACED CURING ROLLS, TENNSIONING THE ROVING SUFFICIENTLY TO FLATTEN THE ROVING INTO A RIBBON-LIKE CONFIGURATION IN GOOD

Claim 5

In a method of making an electrical conductor wherein a bundle of glass filaments are coated with a thermally curable liquid dispersion of conductive particles, the resistance of the conductor being determined by the degree of curing of the filament bundle coating, the steps of thermally curing the filament bundle as a flat ribbon, spirally wrapping a non-conductive glass element around said ribbon under tension to obtain a cylindrical conductor, continuously monitoring the resistance of the cylindrical conductor, varying the extent of curing of said coating in accordance with the monitored resistivity to maintain the resistance of the cured filament bundle coating substantially constant, coating the cylindrical conductor with a heat curable resinous overcoat containing conductive particles, and thermally curing the overcoat.

Claim 6

In a method of making an electrical conductor wherein a bundle of glass filaments are coated with a thermally curable liquid dispersion of conductive particles, the resistance of the conductor being determined by the degree of curing of the filament bundle coating, the steps of thermally curing the filament bundle as a flat ribbon, spirally wrapping a non-conductive glass element around said ribbon under tension to obtain a cylindrical conductor, continuously monitoring the resistance of the cylindrical conductor, varying the extent of curing of said coating in accordance with the monitored resistivity to maintain the resistance of the cured filament bundle coating substantially constant, coating the cylindrical conductor with a heat curable resinous overcoat containing conductive particles, and thermally curing the overcoat.

Claim 7

In a method as defined in claim 3 wherein the overcoat is applied as a plurality of successive layers which are at least partially individually curved.