SE7713904L - NET FENCE FOR PROTECTION OF INSTALLATIONS - Google Patents

NET FENCE FOR PROTECTION OF INSTALLATIONS

Info

Publication number
SE7713904L
SE7713904L SE7713904A SE7713904A SE7713904L SE 7713904 L SE7713904 L SE 7713904L SE 7713904 A SE7713904 A SE 7713904A SE 7713904 A SE7713904 A SE 7713904A SE 7713904 L SE7713904 L SE 7713904L
Authority
SE
Sweden
Prior art keywords
wire
mesh structure
wire mesh
electrical resistance
resistance
Prior art date
Application number
SE7713904A
Other languages
Swedish (sv)
Original Assignee
Blaser Ernst
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 DE19762656349 external-priority patent/DE2656349A1/en
Priority claimed from DE19772746068 external-priority patent/DE2746068A1/en
Application filed by Blaser Ernst filed Critical Blaser Ernst
Publication of SE7713904L publication Critical patent/SE7713904L/en

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)
  • Catching Or Destruction (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)

Abstract

The surrounding fence has a wire mesh structure in which an electrical resistance is incorporated. This electrical resistance can be, for example, a resistance wire (4) which is surrounded by a plastic sheath (5) of the wire mesh structure. In order to reinforce the wire mesh structure, a steel wire (6') can be incorporated in the plastic sheath (5) in addition to the resistance wire (4). The resistance wire (4) is arranged in an electrical resistance measuring circuit (R1, R2, R3, R4, 3) so that an alarm signal is triggered by the resultant change in the electrical resistance values (R1, R2) if the wire mesh structure is damaged. Such a wire mesh structure makes it possible to trigger an alarm signal even if only a single mesh is damaged. <IMAGE>
SE7713904A 1976-12-13 1977-12-07 NET FENCE FOR PROTECTION OF INSTALLATIONS SE7713904L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19762656349 DE2656349A1 (en) 1976-12-13 1976-12-13 High security interwoven wire fence - has plastic sheath enclosing steel reinforcing wire and resistance wire connected in bridge circuit
DE19772746068 DE2746068A1 (en) 1977-10-13 1977-10-13 High security interwoven wire fence - has plastic sheath enclosing steel reinforcing wire and resistance wire connected in bridge circuit

Publications (1)

Publication Number Publication Date
SE7713904L true SE7713904L (en) 1978-06-14

Family

ID=25771248

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7713904A SE7713904L (en) 1976-12-13 1977-12-07 NET FENCE FOR PROTECTION OF INSTALLATIONS

Country Status (7)

Country Link
CH (1) CH624447A5 (en)
DK (1) DK546577A (en)
ES (1) ES464950A1 (en)
FR (1) FR2373655A1 (en)
IT (1) IT1090733B (en)
NL (1) NL7713795A (en)
SE (1) SE7713904L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH637435A5 (en) * 1979-05-05 1983-07-29 Brugg Ag Kabelwerke SECURITY SYSTEM FOR SECURING OBJECTS BEHIND THE SAME WITH AT LEAST ONE WIRE NETWORK.
CH643077A5 (en) * 1979-08-07 1984-05-15 Ci Ka Ra Srl ANTI-BREAK-IN FENCE NET, PROCEDURE AND DEVICE FOR ITS MANUFACTURE.
EP0039371B1 (en) * 1980-02-25 1985-09-11 Ernst Blaser Surveillance device for the field behind a security fence
DE3006999A1 (en) * 1980-02-25 1981-09-24 Ernst 4200 Oberhausen Blaser Circuit for security fence - has four wires forming arms of Wheatstone bridge to release alarm when short-circuited
FR2510785B1 (en) * 1981-07-31 1985-07-19 Guerineau Yves SECURITY FENCE
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
DE3723903A1 (en) * 1987-07-18 1989-01-26 Bernhard Haverkamp MESH WIRE FOR ELECTRICALLY MONITORED FENCES
FR2638877A1 (en) * 1988-11-10 1990-05-11 Bosmy Ste Normande Clotures Et Device for detecting a break in a perimeter fence, localised by stretches
DE102015226652A1 (en) * 2015-12-23 2017-06-29 Bernhard F. Haverkamp Steel ropes and mesh made of steel cables for alarm protection

Also Published As

Publication number Publication date
IT1090733B (en) 1985-06-26
NL7713795A (en) 1978-06-15
FR2373655A1 (en) 1978-07-07
ES464950A1 (en) 1979-08-16
CH624447A5 (en) 1981-07-31
DK546577A (en) 1978-06-14
FR2373655B3 (en) 1980-09-05

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