Apparatus for making co-axial cable

Details Apparatus for making co-axial cable Apparatus for making co-axial cable

1992-01-07

1993-06-29

Briggs, William

Metal working

Plural diverse manufacturing apparatus including means for...

Binding or covering and cutting

29728, 72 52, 72258, 156428, H01B 1300

Patent

active

052222845

ABSTRACT:
Conventionally co-axial cable is made in a continuous extrusion machine by continuously extruding an aluminium tubular cladding (1) through an annular die and simultaneously continuously introducing a core (4), comprised of a conductive wire surrounded by insulation, through an bore in a mandrel (3). A gap is inevitably present between the outer surface of the core (4) and the tubular cladding (1). To eliminate the gap it is necessary to reduce the diameter of the tubular cladding by swagging or drawing step by compacting the insulation of the core before introduction to the mandrel (3). The insulation then gradually expands to recover its original diameter and fill the cladding which has been extruded to its final diameter.

REFERENCES:
patent: 2765527 (1956-10-01), Fairfield et al.
patent: 3899824 (1975-08-01), Beach
patent: 4473936 (1984-10-01), Kellner
patent: 4984357 (1991-01-01), Pan
patent: 5018268 (1991-05-01), Chabane et al.

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