CH612786A5 - Composite wire for fencing - Google Patents

Composite wire for fencing

Info

Publication number
CH612786A5
CH612786A5 CH656377A CH656377A CH612786A5 CH 612786 A5 CH612786 A5 CH 612786A5 CH 656377 A CH656377 A CH 656377A CH 656377 A CH656377 A CH 656377A CH 612786 A5 CH612786 A5 CH 612786A5
Authority
CH
Switzerland
Prior art keywords
wire
fencing
conductors
composite wire
bridge
Prior art date
Application number
CH656377A
Inventor
Joris Slaats
Jan Vandenbogaerde
Original Assignee
Bekaert Sa Nv
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
Priority claimed from NL7610670A external-priority patent/NL7610670A/en
Application filed by Bekaert Sa Nv filed Critical Bekaert Sa Nv
Publication of CH612786A5 publication Critical patent/CH612786A5/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/10—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable

Landscapes

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

Abstract

The wire comprises a central conductor (1) jacketed by a thin insulating sheath (2) and surrounded by conductors (3). The conductor (1) and one of the conductors (3) are connected to a resistance bridge, the diagonal of which is connected to an amplifier controlling an acoustic alarm. Any pressure on the wire (wire-cutter, weight of a person trying to scale the fence, etc.) moves the wire (3) closer to the wire (1) and causes the contact resistance between these two wires or the capacitance to vary, which destroys the balance of the bridge and triggers the acoustic alarm. <IMAGE>
CH656377A 1976-05-31 1977-05-27 Composite wire for fencing CH612786A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7605870 1976-05-31
NL7610670A NL7610670A (en) 1976-09-24 1976-09-24 Composite fencing wire for security fence - has strands separated by thin insulating layer altering capacity between them under pressure

Publications (1)

Publication Number Publication Date
CH612786A5 true CH612786A5 (en) 1979-08-15

Family

ID=26645222

Family Applications (1)

Application Number Title Priority Date Filing Date
CH656377A CH612786A5 (en) 1976-05-31 1977-05-27 Composite wire for fencing

Country Status (7)

Country Link
CH (1) CH612786A5 (en)
DE (1) DE2720252A1 (en)
DK (1) DK226377A (en)
FR (1) FR2353695A1 (en)
GB (1) GB1585602A (en)
IE (1) IE45206B1 (en)
LU (1) LU77445A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2413729A1 (en) * 1978-01-02 1979-07-27 Metafix Sa Electronic monitoring system for security arrangements - compares measured quantity with standard value and allows for temp. variation
DE3723903A1 (en) * 1987-07-18 1989-01-26 Bernhard Haverkamp MESH WIRE FOR ELECTRICALLY MONITORED FENCES
FR2803174B1 (en) * 2000-01-04 2004-09-17 Jean Michel Bellon ELECTRICAL FENCE
ES2376453B1 (en) * 2010-02-25 2013-01-29 Micromag 2000 S.L. CAPACITIVE SENSOR SYSTEM FOR PERIMETER PROTECTION DEVICES.
WO2014170813A1 (en) * 2013-04-15 2014-10-23 Kemp Marius Fence monitoring

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2134800A (en) * 1934-03-21 1938-11-01 Warren C Putnam Treadle switch
FR1137146A (en) * 1955-11-30 1957-05-23 Comp Generale Electricite Deformable electric cable for remote control
NL278995A (en) * 1961-06-05
US3223796A (en) * 1962-07-23 1965-12-14 Willoughby Mfg Company Insulated electric fence wire structure
DE1959229C3 (en) * 1968-07-19 1978-12-21 Israel Aircraft Industries, Ltd., Lod Airport (Israel) Electrical switch actuated by sudden movement of an outer member and comprising a flowable material
GB1406486A (en) * 1972-02-04 1975-09-17 Rists Wires & Cables Ltd Electrical switches
NL176505C (en) * 1974-06-27 1985-04-16 Philips Nv THIN, SMOOTH ELECTRICAL CONNECTION WIRE AND METHOD FOR MANUFACTURING SUCH WIRE.

Also Published As

Publication number Publication date
DK226377A (en) 1977-12-01
GB1585602A (en) 1981-03-11
LU77445A1 (en) 1977-09-12
IE45206L (en) 1977-11-30
FR2353695B1 (en) 1982-08-13
DE2720252A1 (en) 1977-12-22
IE45206B1 (en) 1982-07-14
FR2353695A1 (en) 1977-12-30

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased