Cable with shielding strip

Details Cable with shielding strip Cable with shielding strip

2006-05-30

2006-05-30

Nguyen, Chau N. (Department: 2831)

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

C174S1020SC, C174S116000

Reexamination Certificate

active

07053309

ABSTRACT:
The figure shows an electrical cable with conductors (1) of metal, surrounded by each of an inner conducting layer (2), insulation (3) and an outer conducting layer (4). A moisture barrier (11) with an electrically conducting layer surrounds the conductors. Shield strips (5) of at least partially conducting material are located in the regions between the outer conducting layer (4) and the moisture barrier (11). Electrically conducting shield wires (6) run along the shield strips and are placed through these into electrical contact with the electrically conducting layer of the moisture barrier (11). The shield strips support the moisture barrier from the inside, such that the moisture barrier can in a simple manner be made watertight when it is applied. The shield strips (5), the moisture barrier (11) and the shield wires (6) together constitute an efficient electrical shield for the cable. Penetration of an electrically conducting object into the cable results in a fault current that can be easily indicated, such that an applied cable voltage can be removed.

REFERENCES:
patent: 3211821 (1965-10-01), Wakefield
patent: RE30228 (1980-03-01), Silver et al.
patent: 4963695 (1990-10-01), Marciano-Agostinelli et al.
patent: 3229976 (1984-02-01), None
patent: 0391012 (1990-10-01), None
patent: 0416728 (1991-03-01), None
patent: 0700057 (1996-03-01), None
Swedish Patent Office, International Search Report for PCT/SE03/00864, Dated Aug. 26, 2003.

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