EP2508837B1 - Ballistic protection grid comprising an access door - Google Patents

Ballistic protection grid comprising an access door Download PDF

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Publication number
EP2508837B1
EP2508837B1 EP12156386.0A EP12156386A EP2508837B1 EP 2508837 B1 EP2508837 B1 EP 2508837B1 EP 12156386 A EP12156386 A EP 12156386A EP 2508837 B1 EP2508837 B1 EP 2508837B1
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EP
European Patent Office
Prior art keywords
grid
hatch
opening
bars
ballistic protection
Prior art date
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Active
Application number
EP12156386.0A
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German (de)
French (fr)
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EP2508837A1 (en
Inventor
Alain Hubsch
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.)
Nexter Systems SA
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Nexter Systems SA
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Publication date
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Publication of EP2508837A1 publication Critical patent/EP2508837A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/06—Shields
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • F41H5/026—Slat armour; Nets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/22—Manhole covers, e.g. on tanks; Doors on armoured vehicles or structures
    • F41H5/226—Doors on armoured vehicles or structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00—Armoured or armed vehicles
    • F41H7/02—Land vehicles with enclosing armour, e.g. tanks
    • F41H7/04—Armour construction

Definitions

  • the technical field of the invention is that of the ballistic protection grids.
  • These grids comprise bars spaced apart from each other.
  • the bars have the function of damaging the warhead of the incident projectile, so as to destroy the ignition contact of the hollow charge, which prevents its triggering.
  • the bars of the grid should not be too far apart to prevent the passage of a projectile between them. However, they must be spaced far enough to reduce as much as possible the probability of the rocket projectile hit a rod directly which would cause the firing of the hollow charge.
  • the bars For the same reasons of reducing the probability of contact of a bar with the rocket of the projectile, the bars must also expose the impact of the projectiles as small as possible on the face of the grid receiving the attacks.
  • the grids constitute an obstacle for access to the elements placed at the periphery of the vehicle.
  • a door handle or a tank cap it is known to practice an opening in the grid next to the area to which you want to access and then to place a hatch of the same structure as the grid to hide this opening .
  • the opening of the grid comprises a first frame bordering this opening.
  • a second frame bordering the access hatch that hides the opening of the grid At the junction between aperture and hatch, the juxtaposition of the frames significantly increases the apparent surface exposed to the threat, and the likelihood of seeing this junction area struck by a rocket of a projectile.
  • EP 1 944 566 A1 discloses a grid according to the preamble of claim 1.
  • the subject of the invention is a ballistic protection grid for a vehicle comprising an access hatch accommodating itself in an opening of the gate, the gate and the hatch comprising bars separated from one another by an inter-bar distance, protection grille characterized in that the access door partially obscures the opening of the gate, each edge of the opening of the gate being separated from the sides of the door by a distance substantially equal to the inter-rung distance.
  • the hatch is securable in the closed position with the grid by a locking means.
  • the locking means comprises at least one first tongue carried by one side of the hatch and positioned facing a second tab integral with an edge of the gate, a fastener securing the tabs.
  • the hatch comprises at least one hinge secured to one edge of the gate at one end and secured to one side of the hatch by its other end.
  • edges of the grid and / or the sides of the hatch are delimited by a frame formed of bars.
  • ballistic protection grids 1a and 1b are placed at a distance from the walls of a vehicle, via arms 20 (walls and vehicle not shown). These grids 1a and 1b have bars 2 parallel to each other. These bars 2 are interconnected by amounts 3.
  • the grid 1a according to the invention comprises an opening 4 partially obscured by a hatch 5.
  • the hatch 5 is integral with the grid 1a and it comprises bars 200.
  • Trap 5 and grid 1a are made of the same material, preferably a steel of hardness greater than 360 Brinells, and their bars 2 and 200 have the same dimensional characteristics for the hatch 5 and for the grid 1a.
  • each bar 2 of the gate is separated from the adjacent bar by a distance D.
  • This inter-bar distance D is sufficiently reduced to prevent a projectile (projectile not shown) to pass between the bars 2 without its warhead coming to strike at at least one bar 2.
  • This distance D is also chosen to be large enough to reduce the probability that a projectile rocket will strike a bar 2.
  • the distance D is of the order of 50 mm.
  • the hatch 5 has a distance D of its own bars 200 equal to the distance D separating the consecutive bars 2 of the grid 1a.
  • the opening 4 made in the grid 1a is delimited by edges 7 also placed at a distance D from the sides 8 of the hatch 5.
  • the hatch and its opening are triangular and the three edges 7 of the grid 1a and the three sides 8 of the hatch 5 are all materialized by bars which have the same section as the bars 2 and are made of the same material (steel of hardness greater than 360 Brinells).
  • the protective grid 1 has a more homogeneous protection over its entire surface.
  • a rocket attempting to penetrate the zone 10 between the sides of the hatch 5 and the edges 7 of the opening 4 is as likely to see its warhead degraded without its rocket impact structural elements of the grid 1a qua at any other point in the gate 1a or hatch 5.
  • the hatch 5 does not fully cover the opening 4 of the grid 1a and leaves a zone 10 of width D between the edges of 7 of the grid 1 and the sides 8 of the hatch 5.
  • the reduction in coverage of the opening 4 by the hatch 5, in addition to optimizing the protection, allows to lighten the protection device.
  • the hatch 5 is secured to the grid 1a.
  • two coaxial hinges 11 secured to the same edge 7 of the grid 1a are fixed on a side 8 of the hatch 5.
  • the hatch 5 is also securable in the closed position (as shown in FIG. figure 2 ) with the grid 1a by a locking means which comprises a first tongue 12a carried by one side of the hatch 5 and which is positioned opposite a second tongue 12b integral with an edge of the grid 1a.
  • a fastener (such as a bolt) makes it possible to secure the tabs 12a, 12b so as to lock the trapdoor.
  • the figure 3 shows another embodiment of the invention in which the opening 4 and the hatch 5 are rectangular. Moreover two of the parallel edges 7 of the opening 4 are not materialized by bars but are defined by the ends of the bars 2 and 200 bordering the opening at these edges.
  • the two corresponding sides 8 of the hatch 5 are not materialized by bars but are also defined by the ends of the bars of the hatch 5.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Superstructure Of Vehicle (AREA)

Abstract

The grid has an access hatch (5) received in an opening (4). The hatch comprises bars (2, 200) separated from each other at an inter-bar distance (D). The hatch partially conceals the opening. Edges (7) of the opening are separated from sides (8) of the hatch by distance equal to the inter-bar distance. The hatch is secured to the grid by a locking unit in a closed position. The locking unit comprises a tab (12a) carried by a side of the hatch and positioned with respect to another tab (12b) secured to an edge of the grid.

Description

Le domaine technique de l'invention est celui des grilles de protection balistique.The technical field of the invention is that of the ballistic protection grids.

Pour protéger les véhicules blindés des agressions de projectiles à charge creuse, on utilise des grilles de protection rigides placées à distance des parois du véhicule.To protect the armored vehicles from the attacks of hollow charge projectiles, rigid protective grids placed at a distance from the walls of the vehicle are used.

Ces grilles comportent des barreaux espacés les uns des autres. Les barreaux ont pour fonction de détériorer l'ogive du projectile incident, de manière à détruire le contact de mise à feu de la charge creuse, ce qui empêche son déclenchement.These grids comprise bars spaced apart from each other. The bars have the function of damaging the warhead of the incident projectile, so as to destroy the ignition contact of the hollow charge, which prevents its triggering.

Les barreaux de la grille ne doivent pas être trop ecartés les uns des autres pour empêcher le passage d'un projectile entre eux. Ils doivent cependant être assez espacés pour réduire autant que possible la probabilité de voir la fusée du projectile percuter directement un barreau ce qui entrainerait la mise à feu de la charge creuse.The bars of the grid should not be too far apart to prevent the passage of a projectile between them. However, they must be spaced far enough to reduce as much as possible the probability of the rocket projectile hit a rod directly which would cause the firing of the hollow charge.

Pour les mêmes raisons de réduction de probabilité de contact d'un barreau avec la fusée du projectile, les barreaux doivent aussi exposer à l'impact des projectiles une surface la plus réduite possible sur la face de la grille recevant les agressions.For the same reasons of reducing the probability of contact of a bar with the rocket of the projectile, the bars must also expose the impact of the projectiles as small as possible on the face of the grid receiving the attacks.

Sur les véhicules blindés, les grilles constituent un obstacle pour l'accès aux éléments placés en périphérie du véhicule. Ainsi pour accéder à une poignée de porte ou à un bouchon de réservoir, il est connu de pratiquer une ouverture dans la grille en regard de la zone à laquelle on souhaite accéder puis de placer une trappe de même structure que la grille pour occulter cette ouverture.On the armored vehicles, the grids constitute an obstacle for access to the elements placed at the periphery of the vehicle. Thus to access a door handle or a tank cap, it is known to practice an opening in the grid next to the area to which you want to access and then to place a hatch of the same structure as the grid to hide this opening .

Cette solution d'accès au travers de la grille présente cependant un inconvénient.This access solution through the grid however has a disadvantage.

L'ouverture de la grille comporte un premier cadre bordant cette ouverture. En correspondance à ce cadre se trouve un second cadre bordant la trappe d'accès qui occulte l'ouverture de la grille. Au niveau de la jointure entre ouverture et trappe, la juxtaposition des cadres augmente significativement la surface apparente exposée à la menace, et la probabilité de voir cette zone de jointure percutée par une fusée d'un projectile.The opening of the grid comprises a first frame bordering this opening. In correspondence with this framework find a second frame bordering the access hatch that hides the opening of the grid. At the junction between aperture and hatch, the juxtaposition of the frames significantly increases the apparent surface exposed to the threat, and the likelihood of seeing this junction area struck by a rocket of a projectile.

EP 1 944 566 A1 divulgue une grille selon le préambule de la revendication 1. EP 1 944 566 A1 discloses a grid according to the preamble of claim 1.

Ainsi l'invention a pour objet une grille de protection balistique pour véhicule comportant une trappe d'accès se logeant dans une ouverture de la grille, la grille et la trappe comportant des barreaux séparés les uns des autres d'une distance inter-barreaux, grille de protection caractérisée en ce que la trappe d'accès occulte partiellement l'ouverture de la grille, chaque bord de l'ouverture de la grille étant séparé des côtés de la trappe d'une distance sensiblement égale à la distance inter-barreaux.Thus, the subject of the invention is a ballistic protection grid for a vehicle comprising an access hatch accommodating itself in an opening of the gate, the gate and the hatch comprising bars separated from one another by an inter-bar distance, protection grille characterized in that the access door partially obscures the opening of the gate, each edge of the opening of the gate being separated from the sides of the door by a distance substantially equal to the inter-rung distance.

Selon une caractéristique, la trappe est solidarisable en position fermée avec la grille par un moyen de verrouillage.According to one feature, the hatch is securable in the closed position with the grid by a locking means.

Selon un mode de réalisation, le moyen de verrouillage comprend au moins une première languette portée par un côté de la trappe et se positionnant en regard d'une seconde languette solidaire d'un bord de la grille, un organe de fixation solidarisant les languettes.According to one embodiment, the locking means comprises at least one first tongue carried by one side of the hatch and positioned facing a second tab integral with an edge of the gate, a fastener securing the tabs.

Selon une autre caractéristique, la trappe comporte au moins une charnière solidaire d'un bord de la grille par une extrémité et solidaire d'un côté de la trappe par son autre extrémité.According to another characteristic, the hatch comprises at least one hinge secured to one edge of the gate at one end and secured to one side of the hatch by its other end.

Avantageusement, les bords de la grille et/ou les côtés de la trappe sont délimités par un cadre formé de barres.Advantageously, the edges of the grid and / or the sides of the hatch are delimited by a frame formed of bars.

L'invention sera mieux comprise à la lecture de la description qui va suivre, description faite en référence aux dessins annexés dans lesquels :

  • La figure 1 représente une vue de trois quarts de deux grilles de protection côte à côte, dont une selon l'invention.
  • La figure 2 représente une vue de détail d'une partie de la grille de protection selon l'invention.
  • La figure 3 représente une vue de détail et de face, d'une partie d'une grille de protection selon un autre mode de réalisation.
The invention will be better understood on reading the description which follows, description made with reference to the accompanying drawings in which:
  • The figure 1 represents a three-quarter view of two side-by-side protection grids, one according to the invention.
  • The figure 2 represents a detail view of a portion of the protective grid according to the invention.
  • The figure 3 is a detail view and front view of a portion of a protective grid according to another embodiment.

Selon la figure 1, des grilles de protection balistique 1a et 1b sont placées à distance des parois d'un véhicule, par l'intermédiaire de bras 20 (parois et véhicule non représentés). Ces grilles 1a et 1b comportent des barreaux 2 parallèles entre eux. Ces barreaux 2 sont reliés entre eux par des montants 3.According to figure 1 , ballistic protection grids 1a and 1b are placed at a distance from the walls of a vehicle, via arms 20 (walls and vehicle not shown). These grids 1a and 1b have bars 2 parallel to each other. These bars 2 are interconnected by amounts 3.

La grille 1a selon l'invention comporte une ouverture 4 partiellement occultée par une trappe 5. La trappe 5 est solidaire de la grille 1a et elle comporte des barreaux 200. Trappe 5 et grille 1a sont réalisées dans la même matière, préférentiellement un acier de dureté supérieure à 360 Brinells, et leurs barreaux 2 et 200 présentent les même caractéristiques dimensionnelles pour la trappe 5 et pour la grille 1a.The grid 1a according to the invention comprises an opening 4 partially obscured by a hatch 5. The hatch 5 is integral with the grid 1a and it comprises bars 200. Trap 5 and grid 1a are made of the same material, preferably a steel of hardness greater than 360 Brinells, and their bars 2 and 200 have the same dimensional characteristics for the hatch 5 and for the grid 1a.

Selon la figure 2, chaque barreau 2 de la grille est séparé du barreau voisin d'une distance D. Cette distance inter-barreau D est suffisamment réduite pour empêcher un projectile (projectile non représenté) de passer entre les barreaux 2 sans que son ogive ne vienne percuter au moins un barreau 2. Cette distance D est également choisie suffisamment grande pour réduire la probabilité qu'une fusée de projectile ne vienne percuter un barreau 2. La distance D est de l'ordre de 50 mm.According to figure 2 , each bar 2 of the gate is separated from the adjacent bar by a distance D. This inter-bar distance D is sufficiently reduced to prevent a projectile (projectile not shown) to pass between the bars 2 without its warhead coming to strike at at least one bar 2. This distance D is also chosen to be large enough to reduce the probability that a projectile rocket will strike a bar 2. The distance D is of the order of 50 mm.

La trappe 5 comporte un écartement D de ses propres barreaux 200 égal à la distance D séparant les barreaux 2 consécutifs de la grille 1a.The hatch 5 has a distance D of its own bars 200 equal to the distance D separating the consecutive bars 2 of the grid 1a.

L'ouverture 4 pratiquée dans la grille 1a est délimitée par des bords 7 placés également à une distance D des côtés 8 de la trappe 5. Suivant ce mode de réalisation, la trappe et son ouverture sont triangulaires et les trois bords 7 de la grille 1a et les trois côtés 8 de la trappe 5 sont tous matérialisés par des barres qui présentent la même section que les barreaux 2 et sont réalisées dans la même matière (acier de dureté supérieure à 360 Brinells).The opening 4 made in the grid 1a is delimited by edges 7 also placed at a distance D from the sides 8 of the hatch 5. According to this embodiment, the hatch and its opening are triangular and the three edges 7 of the grid 1a and the three sides 8 of the hatch 5 are all materialized by bars which have the same section as the bars 2 and are made of the same material (steel of hardness greater than 360 Brinells).

Ainsi la grille de protection 1 présente une protection plus homogène sur l'ensemble de sa surface. Une roquette tentant de pénétrer dans la zone 10 entre les côtés de la trappe 5 et les bords 7 de l'ouverture 4 a autant de chance de voir son ogive dégradée sans que sa fusée n'impacte d'éléments structurels de la grille 1a qu'en tout autre endroit de la grille 1a ou de la trappe 5.Thus the protective grid 1 has a more homogeneous protection over its entire surface. A rocket attempting to penetrate the zone 10 between the sides of the hatch 5 and the edges 7 of the opening 4 is as likely to see its warhead degraded without its rocket impact structural elements of the grid 1a qua at any other point in the gate 1a or hatch 5.

On notera que la trappe 5 ne couvre pas intégralement l'ouverture 4 de la grille 1a et laisse une zone 10 de largeur D entre les bords de 7 de la grille 1 et les côtés 8 de la trappe 5. La réduction de couverture de l'ouverture 4 par la trappe 5, en plus d'optimiser la protection, permet d'alléger le dispositif de protection.Note that the hatch 5 does not fully cover the opening 4 of the grid 1a and leaves a zone 10 of width D between the edges of 7 of the grid 1 and the sides 8 of the hatch 5. The reduction in coverage of the opening 4 by the hatch 5, in addition to optimizing the protection, allows to lighten the protection device.

La trappe 5 est solidarisée avec la grille 1a. Pour cela deux charnières coaxiales 11 solidaires d'un même bord 7 de la grille 1a sont fixées sur un côté 8 de la trappe 5. La trappe 5 est par ailleurs solidarisable en position fermée (telle que représentée sur la figure 2) avec la grille 1a par un moyen de verrouillage qui comprend une première languette 12a portée par un côté de la trappe 5 et qui se positionne en regard d'une seconde languette 12b solidaire d'un bord de la grille 1a. Un organe de fixation (tel un boulon) permet de solidariser les languettes 12a,12b donc de verrouiller la trappe.The hatch 5 is secured to the grid 1a. For this two coaxial hinges 11 secured to the same edge 7 of the grid 1a are fixed on a side 8 of the hatch 5. The hatch 5 is also securable in the closed position (as shown in FIG. figure 2 ) with the grid 1a by a locking means which comprises a first tongue 12a carried by one side of the hatch 5 and which is positioned opposite a second tongue 12b integral with an edge of the grid 1a. A fastener (such as a bolt) makes it possible to secure the tabs 12a, 12b so as to lock the trapdoor.

La figure 3 montre un autre mode de réalisation de l'invention dans lequel l'ouverture 4 et la trappe 5 sont rectangulaires. Par ailleurs deux des bords 7 parallèles de l'ouverture 4 ne sont pas matérialisés par des barres mais sont définis par les extrémités des barreaux 2 et 200 bordant l'ouverture au niveau de ces bords.The figure 3 shows another embodiment of the invention in which the opening 4 and the hatch 5 are rectangular. Moreover two of the parallel edges 7 of the opening 4 are not materialized by bars but are defined by the ends of the bars 2 and 200 bordering the opening at these edges.

De même les deux côtés 8 correspondants de la trappe 5 ne sont pas matérialisés par des barres mais sont aussi définis par les extrémités des barreaux de la trappe 5.Similarly, the two corresponding sides 8 of the hatch 5 are not materialized by bars but are also defined by the ends of the bars of the hatch 5.

Selon un autre mode de réalisation non représenté on pourra envisager de faire une trappe 5 de plus petite ou de plus grande taille selon les besoins. Ainsi il est faisable de faire une trappe 5 aux dimensions d'une porte d'embarquement à bord d'un véhicule par exemple.According to another embodiment not shown we can consider making a hatch 5 smaller or larger as needed. Thus it is feasible to make a hatch 5 to the dimensions of a boarding gate aboard a vehicle for example.

Claims (5)

  1. A ballistic protection grid (1a) for a vehicle comprising an access hatch (5) received in an opening (10) of the grid (1a), the grid (1a) and the hatch (5) comprising bars (2 and 200) separated from each other by an inter-bar distance (D), the protection grid (1a) being characterized in that the access hatch (5) partially conceals the opening (10) of the grid (1a), each edge (7) of the opening (10) of the grid (1a) being separated from the sides (8) of the hatch (5) by a distance substantially equal to the inter-bar distance (D).
  2. The ballistic protection grid (1a) according to claim 1, characterized in that the hatch (5) is securable in the closed position to the grid (1a) by a locking means (12a, 12b).
  3. The ballistic protection grid (1a) according to claim 2, characterized in that the locking means (12a, 12b) comprises at least a first tab (12a) on a side (8) of the hatch (5) and positioning itself facing a second tab (12b) secured to an edge (7) of the grid (1a), a fastening member securing the tabs (12a, 12b).
  4. The ballistic protection grid (1a) according to one of claims 1 to 3, characterized in that the hatch (5) comprises at least a hinge (11) secured to an edge (7) of the grid (1a) by one end and secured to a side (8) of the hatch (5) by its other end.
  5. The ballistic protection grid (1a) according to claim 1, characterized in that the edges (7) of the grid (1a) and/or the sides (8) of the hatch (5) are delimited by a frame formed by bars.
EP12156386.0A 2011-04-07 2012-02-21 Ballistic protection grid comprising an access door Active EP2508837B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1101095A FR2973868B1 (en) 2011-04-07 2011-04-07 BALLISTIC PROTECTION GRILL WITH ACCESS HATCH

Publications (2)

Publication Number Publication Date
EP2508837A1 EP2508837A1 (en) 2012-10-10
EP2508837B1 true EP2508837B1 (en) 2013-12-04

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US (1) US8746121B2 (en)
EP (1) EP2508837B1 (en)
CA (1) CA2773603C (en)
FR (1) FR2973868B1 (en)
IL (1) IL218984A (en)

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KR101250426B1 (en) * 2011-07-27 2013-04-08 (주)한국원자력 엔지니어링 Protection Device using Net for Combat Vehicle

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IL218984A0 (en) 2012-06-28
FR2973868A1 (en) 2012-10-12
US20120255431A1 (en) 2012-10-11
CA2773603C (en) 2018-05-15
IL218984A (en) 2015-02-26
CA2773603A1 (en) 2012-10-07
US8746121B2 (en) 2014-06-10
FR2973868B1 (en) 2013-04-05
EP2508837A1 (en) 2012-10-10

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