Method of manufacturing a sealed cable employing a wrapped...

Details Method of manufacturing a sealed cable employing a wrapped... Method of manufacturing a sealed cable employing a wrapped...

H - Electricity

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B

26/132

H01B 13/08 (2006.01) H01B 7/285 (2006.01)

Patent

CA 1138627

F.9261 IMPROVED METHOD OF MANUFACTURING A SEALED CABLE EMPLOYING A WRAPPED FOAM BARRIER ABSTRACT An improved method for producing sheathed cable which includes an inner insulated conductor/conductor group, an outer corrugated metal sheath, and a barrier layer of a closed-cell foam disposed therebetween to prevent the passage of gas or vapors via the cable. The method includes the steps of wrapping a strip of heat activated closed cell foam about the insulated conductor, forming an outer sheath around the foam, and activat- ing the foam to fill the space between the inner and outer sheaths. In accordance with varying alternative embodiments of the invention, the barrier strip may be continuous or inter- rupted; and/or may comprise an already foamed material compressed by formation of the outer metallic shield.

356081

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