Magnetically permeable particles in telecommunications cable
AssigneeNorthern Telecom Limited
InventorsJohn N. Garner, G. Douglas Baxter, James C. Grant
Life of this patent
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Abstract
Method of making insulated conductor wire in which a homogeneous mixture of a dielectric carrier and magnetically permeable particles is sprayed onto the wire to deposit a layer of the mixture on the wire. The layer is then hardened to provide an insulating layer with the particles substantially uniformly dispersed therein.
Claims20
A method of making an insulated conductor wire including a layer of carrier material impregnated with magnetically permeable particles dispersed therein and surrounding the wire comprising:
- providing a homogeneous mixture of a flowable dielectric carrier material and magnetically permeable particles dispersed therein, spraying said mixture in the direction of a conductor wire to cause the mixture to form a deposit of the mixture surrounding the wire;
- and
- hardening the layer so formed with the magnetically permeable particles substantially uniformly dispersed therein.
Apparatus for making an insulated conductor wire comprising:
- an extrusion head for extruding a dielectric layer around the wire, said dielectric layer devoid of magnetically permeable particles;
- and
- a spray device for directing towards the wire, a homogeneous mixture of a dielectric carrier material and magnetically permeable particles dispersed therein so as to deposit a layer of said mixture around the wire;
- the extrusion head and spray device being spaced-apart along a passline for the wire.
An insulated conductor wire comprising a conductor wire surrounded by a layer of dielectric material devoid of magnetically permeable particles and a hardened sprayed deposit comprising a mixture of a dielectric carrier material having magnetically permeable particles substantially dispersed therein.
Dependencies are inferred from the claim text.