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EP0004048B1 - Security fence for safeguarding particularly threatened objects - Google Patents

Security fence for safeguarding particularly threatened objects Download PDF

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Publication number
EP0004048B1
EP0004048B1 EP19790100635 EP79100635A EP0004048B1 EP 0004048 B1 EP0004048 B1 EP 0004048B1 EP 19790100635 EP19790100635 EP 19790100635 EP 79100635 A EP79100635 A EP 79100635A EP 0004048 B1 EP0004048 B1 EP 0004048B1
Authority
EP
European Patent Office
Prior art keywords
wire
posts
netting
security
resistance wire
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.)
Expired
Application number
EP19790100635
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German (de)
French (fr)
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EP0004048A2 (en
EP0004048A3 (en
Inventor
Horst Thomas
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.)
Horst Thomas Drahtzaunbau & Baustoffgrosshandlung
Original Assignee
Horst Thomas Drahtzaunbau & Baustoffgrosshandlung
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.)
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Publication date
Application filed by Horst Thomas Drahtzaunbau & Baustoffgrosshandlung filed Critical Horst Thomas Drahtzaunbau & Baustoffgrosshandlung
Publication of EP0004048A2 publication Critical patent/EP0004048A2/en
Publication of EP0004048A3 publication Critical patent/EP0004048A3/en
Application granted granted Critical
Publication of EP0004048B1 publication Critical patent/EP0004048B1/en
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a security fence for enclosing particularly endangered objects, such as nuclear power plants or other systems to be secured in a special way, which consists of a wire mesh and an insulated resistance wire, the wire mesh between - preferably provided with Y-booms - bracing posts on the outside is, and wherein an electrical alarm device is triggered by the resistance wire if the resistance wire is damaged or severed, with barbed wire optionally additionally tensioned between the individual arms of adjacent posts to secure against climbing over the fence system.
  • the invention consists in that the electrical resistance wire in the form of a network is clamped on the one hand between the fence posts on the inside thereof parallel to the wire mesh, its lower end being let in a bit in the ground, while the upper end End is attached to a wire rope serving as a tension wire and that, on the other hand, a second network is tensioned between the tension wire and another wire rope, which is attached to the upper end of other posts that are lower than the fence posts for the wire mesh and parallel to them in one A distance is set up that does not make it possible to jump over the fence, so that the net is attached to the two wire cables with a resistance wire whose tensile strength is lower than that of the wire from which the net is made and which represents a predetermined breaking point when the net with a certain mm weight is loaded.
  • the invention goes a different way in that the resistance wire is not arranged within the plastic sheath of the braid wire, as was previously the case, but that it is tensioned as a separate network on the one hand parallel to the braid wire and on the other hand inward in a width that a Skipping no longer possible.
  • Such protection has the advantage that it can be retrofitted to any existing fence system and also avoids the difficulties that were associated with the attachment of the resistance wire within the plastic sheath of the braid wire.
  • the invention provides that the lower fence posts are placed at a distance of about 5 m from the fence posts to which the braid wire is attached, the lower fence posts have a height of about 1 m, so that the area under the net to Execution of work, such as Cutting grass or removing leaves or snow is accessible.
  • the two networks consist of a resistance wire, which is provided with a shield made of a metal braid, as is customary for antenna cables, for example, and a plastic sheathing arranged above it.
  • the nets consist of longitudinal and transverse wires crossing at right angles, the plastic sheaths of which are welded to one another at the crossing points.
  • the fence system consists of a row of posts 1 with so-called Y-arms 2 and a row of lower posts 3 which are provided with an eyebolt at their upper end.
  • a Wire mesh 4 braced On the outer side of the fence post (relative to the system to be protected) is a Wire mesh 4 braced, which advantageously consists of a braid provided with a plastic sheath.
  • Barbed wire 5 is drawn in the usual way between the jibs of adjacent posts in order to secure against climbing over the fence system.
  • Posts 1 and 3 are anchored in the usual manner in concrete foundations 6; the longer posts can be, for example, 2.50 m high, the smaller posts can be about 1 m high.
  • a wire rope 7 serving as a tension wire is attached on the inside of the posts 1 immediately below the inwardly extending outrigger.
  • Another wire rope 8, also serving as tension wire, is pulled through the eyebolts attached to the upper end of the posts 3.
  • the network 9 consisting of the resistance wire is tensioned parallel to the wire mesh 4 on the inside of the posts 1, being fastened to the tension wire 7 at the upper end and the lower end as well as the wire mesh 4 being buried about 30 cm into the ground.
  • the second network 10 is tensioned between the tension wire 7 and the tension wire 8 and thus bridges the approximately 5 m wide strip between the two rows of posts 1 and 3.
  • the net 10 is fastened to the two tensioning wires with a wire which has a lower tensile strength than the wire from which the nets are made.
  • the lower tensile strength when using the same resistance wire is obtained, for example, by using a sheath or insulation with lower tensile strength than for the nets.
  • the two nets 9 and 10 are "sewn" with the tension wire by wrapping; the network 10 is fastened to the tensioning wire 8 in the same way.
  • FIG. 3 shows a section through a mesh of one of the nets 9 or 10.
  • the nets consist of longitudinal wires 11 and transverse wires 12, the individual wires of the actual resistance wire 13, a metal braid 14, as is used for example for television cable and a plastic sheath 15 lying above it. At the nodes, the sheaths of the longitudinal and transverse wires are connected to one another by welding.

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

Description

Die Erfindung betrifft einen Sicherheitszaun zur Einfriedung von besonders gefährdeten Objekten, wie Kernkraftwerken oder anderen, in besonderer Weise abzusichernden Anlagen, der aus einem Maschendrahtgeflecht und einem isolierten Widerstandsdraht besteht, wobei das Maschendrahtgeflecht zwischen-vorzugsweise mit Y-Auslegern versehenen - Zaunpfosten an deren Außenseite verspannt ist, und wobei durch den Widerstandsdraht eine elektrische Alarmeinrichtung ausgelöst wird, wenn der Widerstandsdraht beschädigt oder durchtrennt wird, wobei gegebenenfalls zusätzlich zwischen den einzelnen Auslegern benachbarter Pfosten zur Sicherung gegen Überklettern der Zaunanlage Stacheldraht verspannt ist.The invention relates to a security fence for enclosing particularly endangered objects, such as nuclear power plants or other systems to be secured in a special way, which consists of a wire mesh and an insulated resistance wire, the wire mesh between - preferably provided with Y-booms - bracing posts on the outside is, and wherein an electrical alarm device is triggered by the resistance wire if the resistance wire is damaged or severed, with barbed wire optionally additionally tensioned between the individual arms of adjacent posts to secure against climbing over the fence system.

Es ist bekannt, für derartige Sicherheitszäune einen mit einer Kunststoffummantelung versehenen Geflechtdraht zu benutzen, dessen Umhüllung den Widerstandsdraht oder Überwachungsleiter umschließt. Bei einem älteren Vorschlag liegt der Überwachungsleiter, der gegenüber dem vorzugsweise verzinkten Draht des eigentlichen Geflechtes isoliert ist, am Umfang des Geflechtdrahtes an und es sind beide Drähte mit einer gemeinsamen Ummantelung aus Kunststoff umgeben. Um zu verhindern, daß Unberechtigte durch Aufschlitzen des Mantels den Überwachungsleiter aus der Ummantelung herauslösen und durch Anlegen von Klemmen und Brücken versuchen, die elektrische Alarmeinrichtung auszuschalten, die dann ansprechen würde, wenn der Überwachungsleiter zusammen mit dem Geflechtdraht durchgetrennt würde, ist es bekannt, den Geflechtdraht an seinem Umfang mit einer in Längsrichtung des Drahtes verlaufenden Ausnehmung zu versehen, in der der Überwachungsleiter angeordnet ist. Bei der Herstellung derartiger Drähte haben sich Schwierigkeiten ergeben, so daß es bisher noch nicht gelungen ist, einen Sicherheitszaun, der zur Auslösung einer Alarmeinrichtung mit einem Widerstandsdraht versehen ist, so auszubilden, daß ein Eindringen in das umzäunte Gelände ohne Auslösen der Alarmeinrichtung nicht möglicht ist. Diese Aufgabe liegt der Erfindung zugrunde.It is known to use a braided wire provided with a plastic sheath for such security fences, the sheath of which surrounds the resistance wire or monitoring conductor. In an older proposal, the monitoring conductor, which is insulated from the preferably galvanized wire of the actual braid, lies against the circumference of the braided wire and both wires are surrounded by a common plastic sheath. In order to prevent unauthorized persons from opening the monitoring conductor out of the sheathing by slitting the jacket and trying to switch off the electrical alarm device by applying clamps and bridges, which would respond if the monitoring conductor were severed together with the braid wire, it is known that To provide braid wire on its circumference with a recess running in the longitudinal direction of the wire, in which the monitoring conductor is arranged. Difficulties have arisen in the manufacture of such wires, so that it has not yet been possible to design a security fence which is provided with a resistance wire for triggering an alarm device in such a way that penetration into the fenced-in area is not possible without triggering the alarm device . This object is the basis of the invention.

Ausgehend von einem Sicherheitszaun der eingangs beschriebenen Art besteht die Erfindung darin, daß der elektrische Widerstandsdraht in Form eines Netzes einerseits zwischen den Zaunpfosten auf deren Innenseite parallel zu dem Maschendrahtgeflecht verspannt wird, wobei sein unteres Ende ein Stück in den Boden eingelassen wird, während das obere Ende an einem als Spanndraht dienenden Drahtseil befestigt ist und daß andererseits ein zweites Netz zwischen dem Spanndraht und einem weiteren Drahtseil verspannt wird, das am oberen Ende von weiteren Pfosten befestigt ist, die niedriger sind als die Zaunpfosten für das Maschendrahtgeflecht und parallel zu diesen in einem Abstand aufgestellt sind, der ein Überspringen des Zaunes nicht möglich macht, wobie die Befestigung des Netzes an den beiden Drahtseilen mit einem Widerstandsdraht erfolgt, dessen Zerreißfestigkeit niedriger ist als die des Drahtes, aus dem das Netz besteht und der eine Sollbruchstelle darstellt, wenn das Netz mit einem bestimmten Gewicht belastet wird.Starting from a security fence of the type described in the introduction, the invention consists in that the electrical resistance wire in the form of a network is clamped on the one hand between the fence posts on the inside thereof parallel to the wire mesh, its lower end being let in a bit in the ground, while the upper end End is attached to a wire rope serving as a tension wire and that, on the other hand, a second network is tensioned between the tension wire and another wire rope, which is attached to the upper end of other posts that are lower than the fence posts for the wire mesh and parallel to them in one A distance is set up that does not make it possible to jump over the fence, so that the net is attached to the two wire cables with a resistance wire whose tensile strength is lower than that of the wire from which the net is made and which represents a predetermined breaking point when the net with a certain mm weight is loaded.

Die Erfindung geht insofern einen anderen Weg, als der Widerstandsdraht nicht, wie es bisher vorgesehen war, innerhalb des Kunststoffmantels des Geflechtdrahtes angeordnet ist, sondern daß er als getrenntes Netz einerseits parallel zu dem Geflechtdraht und andererseits nach innen in einer Breite verspannt wird, die ein Überspringen nicht mehr möglich macht. Eine solche Absicherung hat den Vorteil, daß sie nachträglich an jeder bestehenden Zaunanlage angebracht werden kann und darüber hinaus die Schwierigkeiten vermieden werden, die im Zusammenhang mit der Anbringung des Widerstandsdrahtes innerhalb der Kunststoffummantelung des Geflechtdrahtes verbunden waren.The invention goes a different way in that the resistance wire is not arranged within the plastic sheath of the braid wire, as was previously the case, but that it is tensioned as a separate network on the one hand parallel to the braid wire and on the other hand inward in a width that a Skipping no longer possible. Such protection has the advantage that it can be retrofitted to any existing fence system and also avoids the difficulties that were associated with the attachment of the resistance wire within the plastic sheath of the braid wire.

Die Erfindung sieht vor, daß die niedrigeren Zaunpfähle in einem Abstand von etwa 5 m von den Zaunpfählen aufgestellt sind, an denen der Geflechtdraht befestigt ist, wobei die niedrigeren Zaunpfähle eine Höhe von etwa 1 m haben, so daß die unter dem Netz liegende Fläche zur Ausführung von Arbeiten, wie z.B. Grasschneiden oder Entfernen von Laub oder Schnee, begehbar ist.The invention provides that the lower fence posts are placed at a distance of about 5 m from the fence posts to which the braid wire is attached, the lower fence posts have a height of about 1 m, so that the area under the net to Execution of work, such as Cutting grass or removing leaves or snow is accessible.

Die beiden Netze bestehen gemäß einem weiteren Merkmal der Erfindung aus einem Widerstandsdraht, der mit einer Abschirmung aus einem Metallgeflecht, wie sie beispielsweise für Antennenkabel üblich ist und einer darüber angeordneten Kunststoffummantelung versehen ist. Bei einer bevorzugten Ausführungsform der Erfindung bestehen die Netze aus sich im rechten Winkel kreuzenden Längs- und Querdrähten, deren Kunststoffummantelungen an den Kreuzungspunkten miteinander verschweißt sind.According to a further feature of the invention, the two networks consist of a resistance wire, which is provided with a shield made of a metal braid, as is customary for antenna cables, for example, and a plastic sheathing arranged above it. In a preferred embodiment of the invention, the nets consist of longitudinal and transverse wires crossing at right angles, the plastic sheaths of which are welded to one another at the crossing points.

Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

  • Figur 1 eine schematische Seitenansicht eines Sicherheitszaunes,
  • Figur 2 eine Draufsicht auf einen Abschnitt eines Sicherheitszaunes und
  • Figur 3 einen Schnitt durch eine Masche eines der aus dem Widerstandsdraht bestehenden Netze.
In the drawing, an embodiment of the invention is shown. Show it:
  • FIG. 1 shows a schematic side view of a security fence,
  • Figure 2 is a plan view of a portion of a security fence and
  • 3 shows a section through a mesh of one of the networks consisting of the resistance wire.

Wie sich aus den Figuren 1 und 2 ergibt, besteht die Zaunanlage aus einer Reihe von Pfosten 1 mit sogenannten Y-Auslegern 2 und einer Reihe von niedrigeren Pfosten 3, die an ihrem oberen Ende mit einer Augenschraube versehen sind. An der, bezogen auf die zu schützende Anlage, äußeren (auf der Zeichnung linken) Seite der Zaunpfosten ist ein Maschendraht 4 verspannt, der zweckmäßigerweise aus einem mit einer Kunststoffummantelung versehenen Geflecht besteht. Zwischen den Auslegern benachbarter Pfosten ist zur Sicherung gegen Überklettern der Zaunanlage in üblicher Weise Stacheldraht 5 gezogen. Die Pfosten 1 und 3 sind in üblicher Weise in Betonfundamenten 6 verankert; die längeren Pfosten können eine Höhe von beispielsweise 2,50 m, die kleineren Pfosten eine Höhe von etwa 1 m haben.As can be seen from FIGS. 1 and 2, the fence system consists of a row of posts 1 with so-called Y-arms 2 and a row of lower posts 3 which are provided with an eyebolt at their upper end. On the outer side of the fence post (relative to the system to be protected) is a Wire mesh 4 braced, which advantageously consists of a braid provided with a plastic sheath. Barbed wire 5 is drawn in the usual way between the jibs of adjacent posts in order to secure against climbing over the fence system. Posts 1 and 3 are anchored in the usual manner in concrete foundations 6; the longer posts can be, for example, 2.50 m high, the smaller posts can be about 1 m high.

An der Innenseite der Pfosten 1 unmittelbar unterhalb der nach innen ragenden Ausleger, ist ein als Spanndraht dienendes Drahtseil 7 angebracht. Ein weiteres, ebenfalls als Spanndraht dienendes Drahtseil 8 ist durch die am oberen Ende der Pfosten 3 angebrachten Augenschrauben gezogen.On the inside of the posts 1 immediately below the inwardly extending outrigger, a wire rope 7 serving as a tension wire is attached. Another wire rope 8, also serving as tension wire, is pulled through the eyebolts attached to the upper end of the posts 3.

Das aus dem Widerstandsdraht bestehende Netz 9 wird parallel zu dem Maschendraht 4 an der Innenseite der Pfosten 1 verspannt, wobei es am oberen Ende an dem Spanndraht 7 befestigt wird und das untere Ende ebenso wie das Drahtgeflecht 4 etwa 30 cm in den Boden eingegraben wird. Das zweite Netz 10 wird zwischen dem Spanndraht 7 und dem Spanndraht 8 verspannt und überbrückt damit den etwa 5 m breiten Streifen zwischen den beiden Reihen der Pfosten 1 und 3.The network 9 consisting of the resistance wire is tensioned parallel to the wire mesh 4 on the inside of the posts 1, being fastened to the tension wire 7 at the upper end and the lower end as well as the wire mesh 4 being buried about 30 cm into the ground. The second network 10 is tensioned between the tension wire 7 and the tension wire 8 and thus bridges the approximately 5 m wide strip between the two rows of posts 1 and 3.

Die Befestigung des Netzes 10 an den beiden Spanndrähten erfolgt mit einem Draht, der eine geringere Zerreißfestigkeit hat als der Draht, aus dem die Netze bestehen.The net 10 is fastened to the two tensioning wires with a wire which has a lower tensile strength than the wire from which the nets are made.

Die geringere Zerreißfestigkeit bei Verwendung des gleichen Widerstandsdrahtes erhält man beispielsweise dadurch, daß eine Umhüllung oder Isolierung mit geringerer Zerreißfestigkeit benutzt wird als für die Netze. Im Bereich des Spanndrahtes 7 werden die beiden Netze 9 und 10 mit dem Spanndraht durch Umwickeln "vernäht"; die Befestigung des Netzes 10 an dem Spanndraht 8 erfolgt in der gleichen Weise.The lower tensile strength when using the same resistance wire is obtained, for example, by using a sheath or insulation with lower tensile strength than for the nets. In the area of the tension wire 7, the two nets 9 and 10 are "sewn" with the tension wire by wrapping; the network 10 is fastened to the tensioning wire 8 in the same way.

Bei Belastung des Netzes 10 durch ein bestimmtes Minimalgewicht, das durch die Zerreißfestigkeit der zur Befestigung der Netze dienenden Drähte bestimmt ist, z.B. wenn eine Person auf das Netz aufspringt, reißt dieser Draht und löst ein Alarmsignal aus. Das gleiche trifft zu, wenn nach Entfernung des Maschendrahtes das Netz 9 an irgendeiner Stelle unterbrochen wird.When the net 10 is loaded by a certain minimum weight, which is determined by the tensile strength of the wires used to fasten the nets, e.g. if a person jumps on the net, this wire breaks and triggers an alarm signal. The same applies if the mesh 9 is interrupted at any point after the wire mesh has been removed.

Figur 3 zeigt einen Schnitt durch eine Masche eines der Netze 9 oder 10. Die Netze bestehen aus Längsdrähten 11 und Querdrähten 12, die einzelnen Drähte aus dem eigentlichen Widerstandsdraht 13, einem Metallgeflecht 14, wie er beispielsweise für Fernsehan1;ennen- kabel benutzt wird und einer darüber liegenden Kunststoffummantelung 15. An den Knotenpunkten sind die Mäntel der Längs- und Querdrähte durch Verschweißen miteinander verbunden.FIG. 3 shows a section through a mesh of one of the nets 9 or 10. The nets consist of longitudinal wires 11 and transverse wires 12, the individual wires of the actual resistance wire 13, a metal braid 14, as is used for example for television cable and a plastic sheath 15 lying above it. At the nodes, the sheaths of the longitudinal and transverse wires are connected to one another by welding.

Claims (6)

1. A security fence for enclosing objects which are particularly at risk, e.g. nuclear power stations or other installations requiring special security, such fence consisting of a wire mesh (4) and an insulated resistance wire, the wire mesh being clamped between and on the outside of posts (1), which are preferably provided with Y-arms, the resistance wire triggering an electrical alarm system if the resistance wire is damaged or severed, barbed wire (5) additionally being clamped, if required, between the individual arms (2) of adjacent posts as security against the fence being climbed over, characterised in that the electrical resistance wire is clamped in the form of a netting (9) between the posts (1) on the inside thereof and parallel to the wire mesh (4), the bottom end of the netting being sunk somewhat into the ground, the top end being secured to a wire cable (7) acting as tensioning wire, and a second netting (10) is clamped between the tensioning wire (7) and another wire cable (8) secured to the top end of additional posts (3) lower than the posts (1) for the wire mesh and situated parallel thereto and at a distance therefrom to prevent the fence from being jumped over, the netting (10) being secured to the two wire cables (7, 8) by means of a resistance wire which has a lower tearing strength than the wire constituting the netting (10) and which forms a predetermined breaking point when the netting is loaded with a specific weight.
2. A security fence according to claim 1, characterised in that the lower posts (3) are erected at a distance of about 5 m from the posts (1) provided with the Y-arms.
3. A security fence according to claim 1 or 2, characterised in that the lower posts (3) are of a height of about 1 m.
4. A security fence according to any one of claims 1 to 3, characterised in that both nettings consist of resistance wire provided with a screening made from a metal braiding with a plastics sheathing thereabove.
5. A security fence according to claim 4, characterised in that the nettings consist of longitudinal and transverse wires intersecting at right angles, the plastics sheathings of which are welded together at the points of intersection.
6. A security fence according to any one of claims 1 to 5, characterised in that the wire used to secure the nettings consists of a resistance wire, the covering or insulation of which has a lower tearing strength than the wire constituting the nettings.
EP19790100635 1978-03-08 1979-03-05 Security fence for safeguarding particularly threatened objects Expired EP0004048B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2809895 1978-03-08
DE19782809895 DE2809895C3 (en) 1978-03-08 1978-03-08 Security fence for enclosing particularly endangered objects

Publications (3)

Publication Number Publication Date
EP0004048A2 EP0004048A2 (en) 1979-09-19
EP0004048A3 EP0004048A3 (en) 1979-10-03
EP0004048B1 true EP0004048B1 (en) 1982-01-20

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EP19790100635 Expired EP0004048B1 (en) 1978-03-08 1979-03-05 Security fence for safeguarding particularly threatened objects

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DE (1) DE2809895C3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039371B1 (en) * 1980-02-25 1985-09-11 Ernst Blaser Surveillance device for the field behind a security fence
DE3010522A1 (en) * 1980-03-19 1981-09-24 Ernst 4200 Oberhausen Blaser Security fence back-up alarm mesh - has connection to Y=shaped arm and movement indicator initiating alarm when moved vertically
DE3012390A1 (en) * 1980-03-29 1981-10-08 Schulz Electronic GmbH, 3101 Hambühren Sensor monitored wire fence with alarm - has hollow arms narrowing towards top, preventing rain instigated false alarms
DE3012389A1 (en) * 1980-03-29 1981-10-08 Schulz Electronic GmbH, 3101 Hambühren Security fence with surveillance sensors - has mounting plate for outrigger carrying fence wires and covering sensor
DE3245857A1 (en) * 1982-12-10 1984-06-14 WSD Werkschutzdienst Thiele KG, 5800 Hagen Fence based on expanded-metal mats
IL70087A (en) * 1983-10-30 1988-06-30 Israel Aircraft Ind Ltd Taut wire fence system
DE19802513A1 (en) * 1997-07-15 1999-10-07 Heiko Henning Security fence to prevent overcoming protected objects
US20120207261A1 (en) * 2011-02-08 2012-08-16 Noel James L Nuclear Power Facility
AT18278U1 (en) * 2022-11-14 2024-08-15 Lipsky Franz Fence installation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537242A1 (en) * 1975-08-21 1977-03-03 Malkmus Doernemann Carola SECURITY FENCE WITH ALARM DEVICE
DE7715636U1 (en) * 1977-05-17 1977-09-01 Horst Thomas Drahtzaunbau & Baustoffgrosshandlung, 4630 Bochum BRAIDED WIRE WITH MONITORING CONDUCTOR

Also Published As

Publication number Publication date
DE2809895C3 (en) 1981-10-29
EP0004048A2 (en) 1979-09-19
DE2809895A1 (en) 1979-09-27
DE2809895B2 (en) 1980-06-26
EP0004048A3 (en) 1979-10-03

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