Electricity: conductors and insulators – With fluids or vacuum – Conduits – cables and conductors
Patent
1976-11-24
1978-10-03
Grimley, Arthur T.
Electricity: conductors and insulators
With fluids or vacuum
Conduits, cables and conductors
29624, 156 56, H01B 906
Patent
active
041185935
ABSTRACT:
A process for making a multi-core, fluid impregnated, electric, submarine cable of long length in which each core is separately formed, impregnated and sheathed before the so-formed units are combined within an armor layer which is covered by a bituminous material. Each unit is formed by forming a conductor of long length having an oil conduit therein. The conductor is covered by paper tape insulation layers, conductive screening layers optionally being applied before and after the covering of the conductor by the paper tape. The so-formed core is then vacuum treated and impregnated with insulating oil, covered with a fluid impermeable sheath which is then protected by blindage of metal tape. Over the blindage, a plastics sheath is formed, and the so-formed unit is combined with similar units which are covered by the armor layer of metal and the layer of bituminous material. The spaces between units and between the units and the armor layer may be filled with a filler material. Also, a cable produced by such process.
REFERENCES:
patent: 2050990 (1936-08-01), Atkinson
patent: 2479924 (1949-08-01), Gillis
patent: 3197553 (1965-07-01), Nicolas
patent: 3459871 (1969-08-01), Eager, Jr. et al.
patent: 3749812 (1973-07-01), Reynolds et al.
Grimley Arthur T.
Industrie Pirelli Societa per Azioni
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