Electrical cable having a bearing part and two concentrically ar

Details Electrical cable having a bearing part and two concentrically ar Electrical cable having a bearing part and two concentrically ar

1991-02-13

1992-06-16

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

174107, 174131A, H01B 704

Patent

active

051226227

ABSTRACT:
An electrical cable includes a central bearing part having a plurality of high-tensile plastic filaments. A rubber sheathing encloses the bearing part. An inner and outer conductor are twisted onto the sheathed bearing part and are disposed concentrically to one another. The inner and outer conductors each include stranded wires. The stranded wires of the inner conductor, as well as the stranded wires of the outer conductor, are twisted together to form a lay. The stranded wires of the inner conductor have the same number of lays as the stranded wires of the outer conductor but with opposite directions of lay. An inner separation layer covers the inner conductor and an outer separation layer covers the outer conductor. Additionally, a rubber insulation layer covers the outer separation layer. Finally, an outer covering encloses the outer separation layer.

REFERENCES:
patent: 2105168 (1938-01-01), Staples
patent: 2453418 (1948-11-01), Dunsheath et al.
patent: 2754351 (1956-07-01), Horn
patent: 3324233 (1967-06-01), Bryant
patent: 4486623 (1984-12-01), Ploppa
patent: 4538022 (1985-08-01), Barnicol-Cottler et al.
patent: 4816611 (1989-03-01), Invernizzi
patent: 4820012 (1989-04-01), Asai

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