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US 4,532,374 AGranted
Electrical cable for use in extreme environments
AssigneeHarvey Hubbell Incorporated
InventorDavid H. Neuroth
Life of this patent
Estimating the term…
Abstract
An armored cable having a plurality of individually insulated conductors and force-resisting members formed with an arcuate cross-sectional shape which substantially conforms to the curvature of the surface on which it is mounted. Opposite surfaces of each force-resisting member in the cable have different widths in cross-section to provide the desired enclosure of the underlying insulation on a conductor after the formation of the arcuate bend in the cable.
Claims14
An electrical cable comprising:
- a plurality of elongated, insulated conductors having a substantially concentric layer of electrical insulation covering each of said conductors, said conductors having substantially parallel longitudinal axes spaced laterally from one another;
- a jacket covering said conductors, said jacket being elongated in transverse cross-section and comprised of first and second opposite edge portions and first and second opposite side portions, said side portions of said jacket having an arcuate shape in transverse cross-section, one being laterally wider than the other, and said jacket having sufficient cross-sectional rigidity to maintain the structure arcuate in its transverse cross-section;
- and
- at least one elongated, force-resisting member within said jacket positioned between and parallel to the insulated conductors;
- said member having first, second and third legs, said third leg extending transversely across the jacket interior substantially from one side portion thereof to the other, said first and second legs extending laterally from said third leg, each being adjacent, respectively, one of said first and second side portions of the jacket and enclosing therebetween at least a portion of the circumferential surface of the insulation;
- said third leg having a lesser compressibility in transverse cross-section than said insulation on said one conductor adjacent thereto;
- said first leg being adjacent the laterally wider jacket side portion and being laterally wider than said second leg for providing the desired enclosure to the conductor insulation.
4 more elements
An electrical cable comprising:
- a plurality of elongated, insulated conductors having a substantially concentric layer of electrical insulation covering each of said conductors, said conductors having substantially parallel longitudinal axes spaced laterlly from one another;
- a jacket covering said conductors, said jacket being elongated in transverse cross-section and comprised of first and second opposite edge portions and first and second opposite side portions, said side portions of said jacket having an arcuate shape in transverse cross-section;
- and
- first and second force-resisting members within said jacket and positioned on opposite sides of one of said conductors,
- said members each having first, second and third legs, said third legs extending transversely across the jacket interior substantially from the first side portion to the second side portion, said first and second legs extending laterally from the third legs towards the center of the cable, each of the first and second legs being adjacent, respectively, the first side portion and the second side portion of the jacket and enclosing therebetween the surface of the insulation on said one conductor;
- said third legs having lesser compressibility in transverse cross-section than said insulation on said one conductor,
- each of said first legs being laterally wider in cross-section than each of said second legs, and
- each of said first legs engaging one another and each of said second legs engaging one another to completely enclose said one conductor.
5 more elements
Dependencies are inferred from the claim text.