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US 4,383,225 AGranted
Cables with high immunity to electro-magnetic pulses (EMP)
OwnerFerdy Mayerinventor
Life of this patent
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Abstract
An electric cable comprising a plurality of separate screenings (3, 8), immunized against external parasites, particularly of high amplitude (common mode current, EMP etc.), wherein the screenings are separated by one or more insulating or slightly conducting magnetic layers (7), formed from magnetic compositions and applied by extrusion.
Claims12
A flexible electric cable for transmission of predetermined signals and having high immunity to parasitic fields, comprising:
- at least one signal conductor;
- and
- shielding means, not contributing to the transfer of said predetermined signals through said cable, for decreasing the transfer impedance of said cable, comprising,
- a first flexible conductive screening concentrically surrounding said at least one conductor,
- at least one magnetic medium formed of a flexible lossy essentially insulating magnetic composite material concentrically surrounding said first flexible conductive screening, and
- at least a second flexible conductive screening concentrically surrounding said magnetic medium.
3 more elements
Dependencies are inferred from the claim text.