US 4,510,346 A · Shielded cable

Abstract

A cable which provides suitable shielding over a relatively wide range of frequencies includes a core (22), and inner shield (32), an outer shield (34) which engages electrically the inner shield, and a jacket (60). Each shield is a laminate which includes a metallic layer comprising a suitable metallic shielding material and a plastic layer. The inner shield has its plastic layer (38) disposed toward the core whereas the plastic layer (52) of the outer shield is oriented toward the jacket. Also, each shield is formed with an unjoined, longitudinal overlapped seam. In order to insure continued shielding when the cable is flexed, the longitudinal seams of the cable are displaced from each other as measured in a direction circumferentially of the core.

Claims14

Dependent claims

A shielded cable, which comprises:

a core comprising at least one conductor;
a layer of dielectric material which encloses said core;
an inner shield which is disposed about said layer of dielectric material and which has an unjoined, longitudinal overlapped seam, said inner shield being made of a suitable metallic shielding material having a relatively high electrical conductivity;
an outer shield which encloses and which engages said inner shield, said outer shield comprising a suitable metallic shielding material which has a relatively high electrical conductivity and having an unjoined, longitudinally overlapped seam which is diametrically opposed to said seam of said inner shield to insure substantially continuous shielding of said cable;
and
a jacket which is made of a plastic material and which encloses said outer shield.

3 more elements

Dependencies are inferred from the claim text.

Shielded cable

Life of this patent

Shielded cable

Life of this patent

Abstract

Claims14