Electricity: conductors and insulators – Conduits – cables or conductors – Conductive armor or sheath
Patent
1985-03-11
1987-05-12
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Conductive armor or sheath
174102P, 174118, 174120R, 174120AR, 174120SR, H01B 720
Patent
active
046652817
ABSTRACT:
A flexible tubing cable assembly having an outer sheath of flexible thin wall metal tubing with one or more conductors therein, each of the conductors having a first layer of a first dielectric and a second layer of a second dielectric, with a third dielectric material filling the space between the one or more conductors and the interior of the tubing. In one of several embodiments, the first dielectric is a polyimide film; the second dielectric is a layer of ethylene propylene compound; and the third dielectric is a magnesium oxide insulation. In another embodiment, the first dielectric is a polyimide; the second dielectric is fiberglass; and the third dielectric is a synthetic rubber. The tubing, in cross-section, may be circular or ovate. In addition, the tubing may be of either high tensile strength or low tensile strength, depending upon the weight supported, for instance, if a submersible pump is supported, high tensile strength tubing is used.
REFERENCES:
patent: 2074777 (1937-03-01), Coupier
patent: 2186441 (1940-01-01), Youmans
patent: 2312506 (1943-03-01), Tomlinson et al.
patent: 2800524 (1957-07-01), Van Lear
patent: 3205296 (1965-09-01), Davis et al.
patent: 3297818 (1967-01-01), McCleery
patent: 3789130 (1974-01-01), Parker
patent: 4284841 (1981-08-01), Tijundis et al.
patent: 4515993 (1985-05-01), MacKenzie
Nimmo Morris H.
Roberts Edward E.
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