Method of manufacturing a sealed cable employing a wrapped foam

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

1979-10-10

1981-05-26

Van Balen, William J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

156 79, 156206, 428313, H01B 1308, H01B 1318, H01B 1322

Patent

active

042696380

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 activating 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 interrupted; and/or may comprise an already foamed material compressed by formation of the outer metallic sheath.

REFERENCES:
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patent: 3687748 (1972-08-01), Clock et al.
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patent: 3814659 (1974-06-01), Nadeau
patent: 3985951 (1976-10-01), Harris
patent: 3986253 (1976-10-01), Harris
patent: 4002787 (1977-01-01), Bailly
patent: 4104480 (1978-08-01), Thompson

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