Oil well cable
AssigneeHarvey Hubbell Incorporated
InventorDavid H. Neuroth
Life of this patent
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Abstract
Disclosed is a flat, electrical cable for use in extremely adverse environments, such as found in oil wells, comprising a plurality of conductors individually sheathed in insulation. The cable includes an elongated, compression-resisting member positioned adjacent an insulated conductor, the member being slotted laterally to impart a degree of bending thereto. A bendable liner is mounted between the member and the insulation sheath of the adjacent conductor to bridge the slots and thereby protect adjacent insulation from abrasion by edges formed on the member by the slots during bending.
Claims18
An improved electrical cable comprising:
- a plurality of elongated, individually insulated electrical conductors lying in one plane in substantially parallel relationship,
- an exterior jacket surrounding said conductors to form a cable;
- a first elongated member extending adjacent and parallel to one of said conductors for resisting forces applied to said jacket in a direction substantially perpendicular to said one plane, said first member having first, second and third legs, said first leg joined to said third leg and extending therefrom adjacent a surface of the insulation on the one conductor, said third leg having a lesser compressibility in said direction than said insulation on said one conductor adjacent thereto,
- a second elongated member mounted on said first member intermediate said first leg and said one conductor,
- said first member having a plurality of longitudinally spaced slots extending inwardly thereof for facilitating bending of said third leg, said second member bridging the slots in said first member to protect the surface insulation on said one conductor.
An improved electrical cable comprising:
- a plurality of electrical conductors having substantially parallel, laterally spaced apart axes lying in one plane,
- electrical insulating material covering each one of said conductors for electrically insulating each of said conductors;
- at least one elongated channel member extending substantially parallel and adjacent one of said conductors, said channel member having two substantially parallel legs lying in planes substantially parallel to said one plane, and a third leg lying in a second plane substantially perpendicular to said one plane for joining said parallel legs and being less compressible in said second plane as compared to the compressibility of the insulating material on the one conductor, the dimension of said third leg in said second plane being at least equal to the diameter of said one conductor, whereby compressive forces applied to the cable in said second plane are resisted thereby,
- said channel member having a plurality of spaced-apart slots extending inwardly of at least one of said parallel legs and the adjoining portions of said third leg for facilitating bending of said channel member in a second plane substantially perpendicular to said one plane, and
- an elongated element mounted in said channel member extending to bridge the slots for protecting the insulating material on said one conductor against abrasion by said member bending in said second plane.
Dependencies are inferred from the claim text.