Shielded cables

Details Shielded cables Shielded cables

1974-12-05

1976-06-15

Grimley, Arthur T.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174106R, 174107, H01B 902

Patent

active

039638545

ABSTRACT:
A shielded electrical cable is described having improved interference immunity and radio frequency screening by virtue of the mode of application of the shield. The shield is insulated from the inner conductor or conductors and comprises a pair of coaxial wire braid layers separated by a continuous metal tube which is flexible and does not bind upon the underlying braid. The tube is peferably formed from mu-metal or other metal tape wound onto the braid in partially overlapping helical turns, the winding tension is insufficient for the overlapping margin to compress the underlying margin of the previous turn, this latter operation being performed in a rotary tubular die whose bore allows for a small annular clearance to be preserved between the wound tape tube and the underlying wire braid.

REFERENCES:
patent: 1755930 (1930-04-01), Middleton
patent: 2028793 (1936-01-01), Mascuch
patent: 2379318 (1945-06-01), Safford
patent: 2527172 (1950-10-01), Beaver et al.
patent: 3215768 (1965-11-01), Murphy
patent: 3636234 (1972-01-01), Wakefield
patent: 3643007 (1972-02-01), Roberts et al.

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