Flexible coaxial cable and a method of manufacturing it
AssigneeNexans
InventorsPascal Clouet, Jean-François Guinot, Jean-Jacques Maisseu, François Vaille
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Abstract
A flexible coaxial cable includes a shield formed by at least one metal tape provided with a metal coating and wound helically around the insulated core of the cable. The shield is sealed to itself in leakproof manner by the coating which is melted so as to bond directly together the overlapping turns of a single tape or the overlapping turns of two superposed tapes by subjecting the cable provided with the shield to peripheral induction heating.
Claims15
A flexible coaxial cable comprising:
- a flexible conductive core,
- flexible insulation around said core, and
- a flexible metal shield around said insulation,
- said shield comprising a first metal tape provided with a metal coating on at least one face thereof and wound helically around said insulation so as to present successive turns that overlap in a helical overlap zone that is continuous along said cable, wherein said first tape is closed in a leakproof manner onto itself throughout said overlap zone between said turns by said coating which bonds said turns so that said turns are soldered to one another and so that said first tape is sealed onto itself.
A method according to 6, consisting in providing said peripheral heating for bonding by means of an induction coil powered at high frequency and provided on a manufacturing line for making said shield continuously on the cable, and having said cable passing therethrough.
A flexible coaxial cable comprising:
- a flexible conductive core,
- flexible insulation around said core, and
- a flexible metal shield around said insulation,
- said shield comprising a first metal tape provided with a metal coating on at least one face thereof and wound helically around said insulation so as to present successive turns that overlap in a heilical overlap zone that is continuous along said cable,
- wherein said first tape is closed in leakproof manner onto itself throughout said overlap zone between said turns by said coating bonding said turns to one another, including a second metal tape wound helically on the first tape and having turns that overlap one another, the second tape being provided with a metal coating on at least one of its faces that faces said first tape and having its turns bonded to one another and to the turns of said first tape.
A flexible coaxial cable comprising a flexible conductive core, flexible insulation around said core, and a flexible metal shield around said insulation, said shield comprising a first metal tape and an outer second metal tape, both tapes being wound helically around said insulation, and at least one of said tapes being provided with a metal coating on at least one of its faces, wherein each of said tapes presents turns leaving a respective helical gap that is continuous along said cable, wherein said turns of said second tape completely overlap the gap in the first tape and partially overlap the turns of said first tape, and wherein the overlap zones between the turns of said tapes are bonded together in leakproof manner by said coating provided on said at least one of the two facing faces of said at least one tape.
Dependencies are inferred from the claim text.