Method and apparatus for making a magnetically loaded insulated electrical conductor
AssigneeNorthern Telecom Limited
InventorMichael A. Shannon
Life of this patent
Estimating the term…
Abstract
Making an insulated electrical conductor having an insulation layer formed from dielectric carrier with magnetically permeable particles dispersed therein in which the conductor bearing the layer is passed through a magnetic field to cause an increase in magnetization of magnetic domains of the particles towards a single direction.
Claims15
A method of making an insulated electrical conductor comprising a solid conductor having an insulation layer formed from a dielectric carrier provided with a plurality of magnetically permeable particles homogeneously dispersed therein, wherein said method comprises applying the layer to the solid conductor with the dielectric carrier in fluid form and passing the solid conductor along a feedpath and axially through the windings of a coil which is energized to create a magnetic field and the field causes an increase in magnetization of magnetic domains of the particles towards the axial direction of the conductor while maintaining the particles homogeneously dispersed.
A method of making a core for an electric cable, said core comprising a plurality of conductors each having a dry insulation layer formed from a dielectric carrier provided with a plurality of magnetically permeable particles homogeneously dispersed therein, wherein said method comprises taking the core with each conductor in solid condition and surrounded with its dry insulation layer and passing the core along a feedpath and axially through the turns of a coil which is energized to create a magnetic field and the field causes an increase in magnetization of magnetic domains of the particles towards the axial direction of the core while maintaining the particles homogeneously dispersed.
Apparatus for making an electrical conductor insulated with an insulation layer formed from a dielectric carrier provided with a plurality of magnetically permeable particles homogeneously dispersed therein comprising means for moving the conductor in solid condition along a feedpath and through a particular spacial region means upstream along the feedpath from the spacial region for providing the solid conductor with the insulation layer while the dielectric carrier is in a fluid condition, and means to produce a magnetic field extending through said spacial region and only of sufficient strength to cause an increase in magnetization of the magnetic domains of the particles towards a single direction.
Apparatus for making an electrical cable having a core comprising a plurality of conductors each individually insulated with an insulation layer formed from a dielectric carrier provided with a plurality of magnetically permeable particles dispersed therein, the apparatus comprising means to move the cable along a feedpath and through a particular spacial region, with the conductors in solid condition and carrying the insulation layers, and means to produce a magnet field with flux lines extending through said spacial region and of sufficient strength to cause an increase in magnetization of the magnetic domains of the particles towards a single direction while maintaining the particles homogeneously dispersed.
Dependencies are inferred from the claim text.