FR2331280A2 - Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt - Google Patents

Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt

Info

Publication number
FR2331280A2
FR2331280A2 FR7534946A FR7534946A FR2331280A2 FR 2331280 A2 FR2331280 A2 FR 2331280A2 FR 7534946 A FR7534946 A FR 7534946A FR 7534946 A FR7534946 A FR 7534946A FR 2331280 A2 FR2331280 A2 FR 2331280A2
Authority
FR
France
Prior art keywords
wire
shunt
internal conductors
security fence
mineral insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR7534946A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trefilunion SA
Original Assignee
Trefilunion SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trefilunion SA filed Critical Trefilunion SA
Priority to FR7534946A priority Critical patent/FR2331280A2/en
Publication of FR2331280A2 publication Critical patent/FR2331280A2/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The security fence is constructed from barbed wire or similar, this being a mineral insulated wire (1) which is twisted and provided with barbs (3, 4). This wire has a metal outer sheath and one or more internal conductors. Each of these is insulated from the remainder and can be used to form a number of separate circuits, or connected together to provide a single integral circuit. Each circuit is interconnected (5) into an electrical supply source (E), a detector (D) and a suitable alarm (A). Variations in electrical resistance operate the alarm if the wire is cut, whether or not a shunt is used.
FR7534946A 1975-11-13 1975-11-13 Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt Pending FR2331280A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7534946A FR2331280A2 (en) 1975-11-13 1975-11-13 Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7534946A FR2331280A2 (en) 1975-11-13 1975-11-13 Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt

Publications (1)

Publication Number Publication Date
FR2331280A2 true FR2331280A2 (en) 1977-06-10

Family

ID=9162465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7534946A Pending FR2331280A2 (en) 1975-11-13 1975-11-13 Security fence of barbed wire - uses mineral insulated wire with internal conductors to detect cutting or use of shunt

Country Status (1)

Country Link
FR (1) FR2331280A2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317955A (en) * 1979-10-23 1982-03-02 Choi Oh Y Barbed wire
FR2510786A1 (en) * 1981-07-31 1983-02-04 Guerineau Yves Security fence using plastics coated metal wire - has conductor for signalling intrusion combined with plastic coating
EP0073927A1 (en) * 1981-08-19 1983-03-16 CI.KA.RA. S.p.A. Intrusion warning wire fence
DE3723903A1 (en) * 1987-07-18 1989-01-26 Bernhard Haverkamp MESH WIRE FOR ELECTRICALLY MONITORED FENCES
EP1632918A2 (en) * 2004-09-06 2006-03-08 Jean-Paul Perret Electric fence security device
FR2874954A1 (en) * 2004-09-08 2006-03-10 Sfp Security Fence Perimeter S Protective fence`s safety device for military zone, has outer winding including wire that carries points and has line for transmitting interrogation signal on wire when wire is not cut and not transmitting signal when wire is cut
CN105488931A (en) * 2014-10-09 2016-04-13 中兴通讯股份有限公司 Warning signal generation device, base station power device, and base station power system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317955A (en) * 1979-10-23 1982-03-02 Choi Oh Y Barbed wire
FR2510786A1 (en) * 1981-07-31 1983-02-04 Guerineau Yves Security fence using plastics coated metal wire - has conductor for signalling intrusion combined with plastic coating
EP0073927A1 (en) * 1981-08-19 1983-03-16 CI.KA.RA. S.p.A. Intrusion warning wire fence
US4680573A (en) * 1981-08-19 1987-07-14 Ci.Ka.Ra S.P.A. Intrusion warning wire fence
DE3723903A1 (en) * 1987-07-18 1989-01-26 Bernhard Haverkamp MESH WIRE FOR ELECTRICALLY MONITORED FENCES
EP1632918A2 (en) * 2004-09-06 2006-03-08 Jean-Paul Perret Electric fence security device
EP1632918A3 (en) * 2004-09-06 2007-04-18 Jean-Paul Perret Electric fence security device
FR2874954A1 (en) * 2004-09-08 2006-03-10 Sfp Security Fence Perimeter S Protective fence`s safety device for military zone, has outer winding including wire that carries points and has line for transmitting interrogation signal on wire when wire is not cut and not transmitting signal when wire is cut
CN105488931A (en) * 2014-10-09 2016-04-13 中兴通讯股份有限公司 Warning signal generation device, base station power device, and base station power system

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