Coaxial cable

Electricity: conductors and insulators – With fluids or vacuum – Conduits – cables and conductors

Reexamination Certificate

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C174S1020SP, C174S10500R

Reexamination Certificate

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07105739

ABSTRACT:
A first conductor is provided on an outer circumference of a central conductor with an insulator therebetween, a second conductor is provided on a concentric circle having the central conductor as its center and outside the first conductor with an insulator therebetween. A coaxial cable is formed by coating the outside of the second conductor, which is on the concentric circle having the central conductor as its center, with an insulating external coating. A DC voltage source is able to apply DC voltage having a predetermined voltage value between the first conductor and the second conductor such that the direct current flowing in the first conductor and the second conductor takes a desired value. A noise barrier zone formed by the electro-magnetic action of the desired current is formed in the part surrounded by the first conductor and the second conductor on the outer circumference of the central conductor.

REFERENCES:
patent: 3975700 (1976-08-01), Halstead
patent: 4376920 (1983-03-01), Smith
patent: 4987394 (1991-01-01), Harman et al.
patent: 5150442 (1992-09-01), Desmons
patent: 5159276 (1992-10-01), Reddy, III
patent: 5557698 (1996-09-01), Gareis et al.
patent: 6384337 (2002-05-01), Drum
patent: 3024770 (1996-03-01), None

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