Composite wire and fence made therefrom useful for security purposes
AssigneeN. V. Bekaert S. A.
InventorsJoris Slaats, Jan Vandenbogaerde
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Abstract
At least two conductive wire elements which are separated from each other by a thin insulating layer such that as soon as a pressure is exerted on the composite wire at least one of the electrical characteristics, contact resistance and/or capacitance between the elements, changes to a measurable extent. A fence constructed of such composite wire has a circuit connected with both conductive wire elments for detecting any deviation in the nominal value of contact resistance and/or capacitance between them and for controlling an alarm circuit responsive to such deviation.
Claims10
A composite wire comprising a number of elongated conductive elements adapted for use in a security fence, at least two of said elements being separated from each other by a thin insulating layer such that as soon as a pressure is exerted on the composite wire the contact resistance between said elemens changes to a measurable extent.
A composite wire comprising a number of elongated conductive elements adapted for use in a security fence, at least two of said elements being separated from each other by a thin insulating layer such that as soon as a pressure is exerted on the composite wire the capacitance between said elements changes to a measurable extent.
Dependencies are inferred from the claim text.