The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1987
Filed:
Mar. 25, 1986
CI.KA.RA. S.p.A., Bolonga, IT;
Abstract
This invention relates to an intrusion warning wire fence secured to spaced supporting poles. The fence comprises one or more electrical and/or optical conductors, preferably optical fibers, which may be either (1) incorporated within one or more tubular wires of said wire fence and/or (2) associated exteriorly with one or more wires of said fence, and/or (3) arranged freely in the fence, and which are connected to an intrusion warning system capable of emitting a warning and/or alarm signal in case of breakage or reduction of the conduction capability of at least one of said conductors. According to the invention, in order to prevent anyone from stepping over or scaling the fence, the fence is extended upwards beyond the upper ends of the supporting poles. This and this upper unsupported portion of the fence will be either distorted (bent, flexed) and/or broken, at least locally, if anyone tries to scale the fence. Extending in the upper unsupported portion of the fence and/or between this upper unsupported portion of the fence and the supporting poles, and/or between said upper unsupported portion and the underlying portion of the fence which is stretched between the supporting poles, is at least one electrical and/or optical conductor which will be either broken or distorted (bent, stretched, crushed) as a result of any breakage or distortion of the upper unsupported portion of the fence, so as to provide a warning or alarm signal.