EP0502793B1 - Practice mine - Google Patents

Practice mine Download PDF

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Publication number
EP0502793B1
EP0502793B1 EP92420046A EP92420046A EP0502793B1 EP 0502793 B1 EP0502793 B1 EP 0502793B1 EP 92420046 A EP92420046 A EP 92420046A EP 92420046 A EP92420046 A EP 92420046A EP 0502793 B1 EP0502793 B1 EP 0502793B1
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EP
European Patent Office
Prior art keywords
tabs
ballast
mine according
exercise
exercise mine
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 - Lifetime
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EP92420046A
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German (de)
French (fr)
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EP0502793A1 (en
Inventor
Pascal Bourgin
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Giat Industries SA
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Giat Industries SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/28—Land or marine mines; Depth charges

Definitions

  • the present invention relates to military training equipment and it relates, more particularly, to the dummy mines used for the exercise and training of personnel, but also to equipment used for reloading, transport, storage, shooting. .
  • the invention relates, more specifically, to the field of land and surface exercise mines.
  • exercise mines which are representative of the shape and mass of the actual mines. , while being free of explosive charges.
  • Such mines include a generally barrel shaped body having an axis of symmetry, most often also of revolution.
  • a body is constituted by two housings of elastomer or similar material, delimiting an internal cavity which is occupied by a ballast made of a dense material.
  • the two housings which are symmetrical with respect to a transverse median plane perpendicular to the axis of revolution, are secured by steel tie rods, in an axial direction, passing through the housings and which are riveted externally to the two transverse faces which the latter define for the body.
  • the riveting of the ends of the tie rods is also used to ensure the immobilization of two outer rings with transverse faces and on which are elastic tabs extending outwardly at the periphery of the body, in alternating radial directions from one side to the other, each presenting a diverging inclination from said corresponding face towards the median transverse joint plane of the two housings.
  • the elastic tabs have the function of ensuring the positioning of the mine, whatever the nature of the terrain.
  • Such dummy or exercise mines give satisfaction for the function which they must assume, but have a drawback mainly due to their cost of manufacturing, because of the large number of elementary parts which it is advisable to carry out and to assemble to ensure their constitution. It is, in fact, necessary to produce and assemble thirteen different elementary parts, which, undoubtedly, raises the overall manufacturing price and increases the load of storage, assembly and assembly for each mine.
  • the object of the invention is to remedy this drawback by proposing a new structure making it possible to significantly reduce the cost price by reducing the number of elementary parts entering into the constitution of a mine and, above all also, by eliminating the most assembly operations made compulsory by the prior art.
  • Another object of the invention is also to improve the mechanical strength, in particular of the elastic lugs, by eliminating the risks of corrosion, mainly attached to the mode of connection by welding between the elastic lugs and the rings carrying them according to the prior art.
  • Fig. 1 is a plan view of an exercise mine according to the invention.
  • Fig. 2 is a sectional elevation taken along line II-II of FIG. 1.
  • Fig. 3 is a perspective, partially broken away, showing more in detail some of the constituent elements of the invention.
  • the exercise lead comprises a body 1 , of generally barrel shape, having an axis of symmetry or of revolution xx ′ .
  • the body 1 has two transverse planar faces 2 and 3 , mutually parallel and perpendicular to the axis xx ′ .
  • the transverse faces 2 and 3 limit the body 1 in combination with a periphery 4 which can be smooth, cut or, again, made to include housings 5 angularly equidistant, the function of which appears in the following.
  • the body 1 is constituted by a ballast 6 which can be produced in several different ways, insofar as it responds to a low cost price, to the existence of a certain density, generally between 2.3 and 2 , 5, to good temperature resistance up to about 220 ° C., to good mechanical resistance, more particularly to compression stresses and to good inertia to external chemical aggressive agents.
  • a ballast 6 which can be produced in several different ways, insofar as it responds to a low cost price, to the existence of a certain density, generally between 2.3 and 2 , 5, to good temperature resistance up to about 220 ° C., to good mechanical resistance, more particularly to compression stresses and to good inertia to external chemical aggressive agents.
  • the ballast 6 may consist of a concrete mass, reinforced or not, of generally cylindrical shape, the periphery of which is, for example, surrounded by an envelope 7 , called a connection, which can, for example example, be made of polyvinyl chloride.
  • the ballast 6 can also be constituted by a single mass of another material or, again, by an association of plates or blocks, possibly linked together by any suitable means. In all cases, the ballast 6 is made to constitute a unitary mass of a compact nature, the center of gravity of which must be located on the axes of axial and transverse symmetry.
  • the body 1 is also constituted by an overmolding 8 of any suitable material and, more particularly, of an elastometer-polyester, known under the trade name of PEBAX .
  • the overmolding 8 is carried out in one piece to completely surround the ballast 6 , both on the periphery and on the transverse faces of the latter.
  • overmolding conditions in pressure and in temperature, are determined by the choice of the material constituting the overmolding 8 and must be considered as falling within the known technique. However, it should also be remembered that the characteristics of the material or materials constituting the ballast 6 must be chosen so that the latter has sufficient mechanical resistance to compression, to the molding temperature, as well as to the possibly aggressive characteristics of the components of the material of the overmolding 8 .
  • the body 1 is also associated with elastic tabs 9 which extend externally at the periphery 4 , from the transverse faces 2 and 3 , in alternating radial directions from one face to the other, as appears more particularly from figs. 1 and 3 .
  • the legs 9 are identified with the index 2 or 3 , depending on whether they belong or whether they originate from the transverse face 2 or 3 .
  • the legs 92 and 93 which are angularly alternated from one face to the other, are also arranged equidistant angularly, each diverging from the corresponding face towards a transverse median plane P of the body 1 and perpendicular to the axis of symmetry xx ′ .
  • the legs 92 and 93 are constituted by the folded end portions of fittings 10 in "U" which are organized in the form of two sets 112 and 113 .
  • Each set includes two fittings 10 , the central webs 12 of which are arranged at right angles to be linked by their central part.
  • the two fittings constituting each set can be connected in any suitable way, in particular by a pin, a rivet or the like 13 , in any suitable material, chosen to avoid the risk of possible corrosion.
  • 112 and 113 sets are included in overmolding 8 in which they can be completely embedded or, simply, partially coated if, for example, the fittings 10 are initially shaped to fit the ballast 6 .
  • the sets 112 and 113 are arranged in reverse nesting, on either side of the ballast 6 , being offset by 45 ° in the present case, so that the wings 14 extend, successively, alternately, at the outer periphery of the ballast 6 , so that the tabs 9 which they constitute by their folded end portion meet the implantation conditions listed above.
  • each set 11 consists of two fittings 10 and that the body 6 is associated with two sets, so that the dummy lead has eight elastic tabs 9 .
  • a different composition could be chosen by composing each set 11 , for example from three fittings 10 .
  • the sets 112 and 113 , as well as the ballast 6 are arranged in the mold for forming the overmolding 8 , so that the different tabs 9 coincide with the positive impressions.
  • the housings 5 of an axial nature. These housings are intended to allow elastic folding of the different tabs 9 to facilitate the installation, storage or loading in cylindrical tubes or containers for transport or launch.
  • an exercise mine according to the invention is constituted in a single operation by forming the overmolding 8 around the ballast 6 and the sets 112 and 113 previously placed in the mold.
  • the mine according to the invention offers a structure which is more resistant mechanically and less subject to the risks of corrosion, more particularly in the areas of attachment and bending of the legs. 9 which are formed integrally by the fittings 10 , embedded in the body 1 , which increases the resistance of the legs to impact upon impact on the ground.
  • the proposed structural embodiment according to the invention also makes it possible to reduce the number of constituent parts, since two tabs 9 are formed by a single fitting 10 , only by folding.

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  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Clamps And Clips (AREA)

Description

La présente invention est relative au matériel militaire d'entraînement et elle concerne, plus particulièrement, les mines factices utilisées pour l'exercice et l'entraînement du personnel, mais aussi du matériel utilisé pour le rechargement, le transport, le stockage, le tir.The present invention relates to military training equipment and it relates, more particularly, to the dummy mines used for the exercise and training of personnel, but also to equipment used for reloading, transport, storage, shooting. .

L'invention concerne, plus spécifiquement, le domaine des mines d'exercice terrestres, de surface.The invention relates, more specifically, to the field of land and surface exercise mines.

Pour permettre l'entraînement du personnel aux exercices de tir, au maniement des matériels et des mines terrestres de surface, il est généralement fait appel à des mines, dites d'exercice, qui sont représentatives de la forme et de la masse des mines réelles, tout en étant dépourvues de charges explosives.In order to allow the training of personnel in firing exercises, in the handling of equipment and in surface land mines, it is generally called upon using so-called exercise mines, which are representative of the shape and mass of the actual mines. , while being free of explosive charges.

De telles mines comprennent un corps de forme générale barriquée possédant un axe de symétrie, le plus souvent aussi de révolution. Un tel corps est constitué par deux boîtiers en élastomère ou matière analogue, délimitant une cavité interne qui est occupée par un lest en un matériau dense.Such mines include a generally barrel shaped body having an axis of symmetry, most often also of revolution. Such a body is constituted by two housings of elastomer or similar material, delimiting an internal cavity which is occupied by a ballast made of a dense material.

Les deux boîtiers, qui sont symétriques par rapport à un plan médian transversal perpendiculaire à l'axe de révolution, sont solidarisés par des tirants en acier, de direction axiale, traversant les boîtiers et qui sont rivés extérieurement aux deux faces transversales que ces derniers définissent pour le corps.The two housings, which are symmetrical with respect to a transverse median plane perpendicular to the axis of revolution, are secured by steel tie rods, in an axial direction, passing through the housings and which are riveted externally to the two transverse faces which the latter define for the body.

Le rivetage des extrémités des tirants est également mis à profit pour assurer l'immobilisation de deux anneaux extérieurs aux faces transversales et sur lesquels sont soudées des pattes élastiques s'étendant extérieurement à la périphérie du corps, selon des directions radiales alternées d'une face à l'autre, en présentant chacune une inclinaison divergente depuis ladite face correspondante vers le plan de joint transversal médian des deux boîtiers. Les pattes élastiques ont pour fonction d'assurer le positionnement de la mine, quelle que soit la nature du terrain.The riveting of the ends of the tie rods is also used to ensure the immobilization of two outer rings with transverse faces and on which are elastic tabs extending outwardly at the periphery of the body, in alternating radial directions from one side to the other, each presenting a diverging inclination from said corresponding face towards the median transverse joint plane of the two housings. The elastic tabs have the function of ensuring the positioning of the mine, whatever the nature of the terrain.

De telles mines factices ou d'exercice donnent satisfaction pour la fonction qu'elles doivent assumer, mais présentent un inconvénient tenant, principalement, à leur coût de fabrication, en raison du grand nombre de pièces élémentaires qu'il convient de réaliser et d'assembler pour en assurer la constitution. Il est, en effet, nécessaire de réaliser et d'assembler treize pièces élémentaires différentes, ce qui, incontestablement, élève le prix de fabrication global et accroît la charge de stockage, de montage et d'assemblage pour chaque mine.Such dummy or exercise mines give satisfaction for the function which they must assume, but have a drawback mainly due to their cost of manufacturing, because of the large number of elementary parts which it is advisable to carry out and to assemble to ensure their constitution. It is, in fact, necessary to produce and assemble thirteen different elementary parts, which, undoubtedly, raises the overall manufacturing price and increases the load of storage, assembly and assembly for each mine.

L'objet de l'invention est de remédier à cet inconvénient en proposant une nouvelle structure permettant de réduire notablement le prix de revient par diminution du nombre de pièces élémentaires entrant dans la constitution d'une mine et, surtout aussi, par suppression de la plupart des opérations d'assemblage rendues obligatoires par la technique antérieure.The object of the invention is to remedy this drawback by proposing a new structure making it possible to significantly reduce the cost price by reducing the number of elementary parts entering into the constitution of a mine and, above all also, by eliminating the most assembly operations made compulsory by the prior art.

Un autre objet de l'invention est d'améliorer aussi la tenue mécanique, notamment des pattes élastiques, en supprimant les risques de corrosion, principalement attachés au mode de liaison par soudure entre les pattes élastiques et les anneaux les portant selon la technique antérieure.Another object of the invention is also to improve the mechanical strength, in particular of the elastic lugs, by eliminating the risks of corrosion, mainly attached to the mode of connection by welding between the elastic lugs and the rings carrying them according to the prior art.

Pour atteindre les objectifs ci-dessus, la mine d'exercice selon l'invention est caractérisée en ce que :

  • le corps est formé par un surmoulage d'une seule pièce autour du lest,
  • les pattes sont formées par les parties terminales repliées de ferrures noyées dans la partie du corps entourant le lest,
  • et le lest est formé ou constitué pour que son centre de gravité soit situé sur les axes de symétrie axial et transversal du corps.
To achieve the above objectives, the exercise mine according to the invention is characterized in that:
  • the body is formed by a single-piece overmolding around the ballast,
  • the legs are formed by the folded end portions of fittings embedded in the part of the body surrounding the ballast,
  • and the ballast is formed or formed so that its center of gravity is located on the axes of axial and transverse symmetry of the body.

Diverses autres caractéristiques ressortent de la description faite ci-dessous en référence aux dessins annexés qui montrent, à titre d'exemple non limitatif, une forme de réalisation de l'objet de l'invention.Various other characteristics will emerge from the description given below with reference to the appended drawings which show, by way of nonlimiting example, an embodiment of the subject of the invention.

La fig. 1 est une vue en plan d'une mine d'exercice selon l'invention. Fig. 1 is a plan view of an exercise mine according to the invention.

La fig. 2 est une coupe-élévation prise selon la ligne II-II de la fig. 1. Fig. 2 is a sectional elevation taken along line II-II of FIG. 1.

La fig. 3 est une perspective, en partie arrachée, faisant apparaître plus en détail certains des éléments constitutifs de l'invention. Fig. 3 is a perspective, partially broken away, showing more in detail some of the constituent elements of the invention.

Selon les dessins, la mine d'exercice selon l'invention comprend un corps 1, de forme générale barriquée, possédant un axe de symétrie ou de révolution x-x′. Le corps 1 comporte deux faces planes transversales 2 et 3, parallèles entre elles et perpendiculaires à l'axe x-x′. Les faces transversales 2 et 3 limitent le corps 1 en combinaison avec une périphérie 4 qui peut être lisse, découpée ou, encore, réalisée pour comporter des logements 5 équidistants angulairement, dont la fonction apparaît dans ce qui suit.According to the drawings, the exercise lead according to the invention comprises a body 1 , of generally barrel shape, having an axis of symmetry or of revolution xx ′ . The body 1 has two transverse planar faces 2 and 3 , mutually parallel and perpendicular to the axis xx ′ . The transverse faces 2 and 3 limit the body 1 in combination with a periphery 4 which can be smooth, cut or, again, made to include housings 5 angularly equidistant, the function of which appears in the following.

Le corps 1 est constitué par un lest 6 qui peut être réalisé de plusieurs façons différentes, dans la mesure où il répond à un faible prix de revient, à l'existence d'une certaine masse volumique, généralement comprise entre 2,3 et 2,5, à une bonne tenue en température jusqu'à environ 220° C, à une bonne tenue mécanique, plus particulièrement aux contraintes de compression et à une bonne inertie aux agents agressifs chimiques extérieurs.The body 1 is constituted by a ballast 6 which can be produced in several different ways, insofar as it responds to a low cost price, to the existence of a certain density, generally between 2.3 and 2 , 5, to good temperature resistance up to about 220 ° C., to good mechanical resistance, more particularly to compression stresses and to good inertia to external chemical aggressive agents.

A titre d'exemple, le lest 6 peut être constitué par une masse en béton, armé ou non, de forme générale cylindrique, dont la périphérie est, par exemple, entourée d'une enveloppe 7, dite de liaison, qui peut, par exemple, être réalisée en chlorure de polyvinyle.By way of example, the ballast 6 may consist of a concrete mass, reinforced or not, of generally cylindrical shape, the periphery of which is, for example, surrounded by an envelope 7 , called a connection, which can, for example example, be made of polyvinyl chloride.

Il doit être considéré que le lest 6 peut aussi être constitué par une seule masse d'une matière autre ou, encore, par une association de plaques ou de blocs, éventuellement liés entre eux par tout moyen convenable. Dans tous les cas, le lest 6 est réalisé pour constituer une masse unitaire à caractère compact, dont le centre de gravité doit être situé sur les axes de symétrie axial et transversal.It should be considered that the ballast 6 can also be constituted by a single mass of another material or, again, by an association of plates or blocks, possibly linked together by any suitable means. In all cases, the ballast 6 is made to constitute a unitary mass of a compact nature, the center of gravity of which must be located on the axes of axial and transverse symmetry.

Le corps 1 est, également, constitué par un surmoulage 8 en toute matière appropriée et, plus particulièrement, en élastomètre-polyester, connu sous le nom commercial de PEBAX. Le surmoulage 8 est effectué en une seule pièce pour entourer complètement le lest 6, tant sur la périphérie que sur les faces transversales de ce dernier.The body 1 is also constituted by an overmolding 8 of any suitable material and, more particularly, of an elastometer-polyester, known under the trade name of PEBAX . The overmolding 8 is carried out in one piece to completely surround the ballast 6 , both on the periphery and on the transverse faces of the latter.

Les conditions de surmoulage, en pression et en température, sont déterminées par le choix de la matière constitutive du surmoulage 8 et doivent être considérées comme relevant de la technique connue. Cependant, il convient aussi de retenir que les caractéristiques du ou des matériaux constitutifs du lest 6 doivent être choisis pour que ce dernier présente une résistance mécanique suffisante à la compression, à la température de moulage, ainsi qu'aux caractères éventuellement agressifs des composants de la matière du surmoulage 8.The overmolding conditions, in pressure and in temperature, are determined by the choice of the material constituting the overmolding 8 and must be considered as falling within the known technique. However, it should also be remembered that the characteristics of the material or materials constituting the ballast 6 must be chosen so that the latter has sufficient mechanical resistance to compression, to the molding temperature, as well as to the possibly aggressive characteristics of the components of the material of the overmolding 8 .

Le corps 1, tel que décrit ci-dessus, est associé aussi à des pattes élastiques 9 qui s'étendent extérieurement à la périphérie 4, à partir des faces transversales 2 et 3, selon des directions radiales alternées d'une face à l'autre, comme cela apparaît plus particulièrement à partir des fig. 1 et 3. Les pattes 9 sont identifiées avec l'indice 2 ou 3, selon qu'elles appartiennent ou qu'elles prennent naissance à partir de la face transversale 2 ou 3.The body 1 , as described above, is also associated with elastic tabs 9 which extend externally at the periphery 4 , from the transverse faces 2 and 3 , in alternating radial directions from one face to the other, as appears more particularly from figs. 1 and 3 . The legs 9 are identified with the index 2 or 3 , depending on whether they belong or whether they originate from the transverse face 2 or 3 .

Les pattes 9₂ et 9₃, qui sont alternées angulairement d'une face à l'autre, sont disposées aussi de façon équidistante angulairement en divergeant chacune depuis la face correspondante vers un plan médian transversal P du corps 1 et perpendiculaire à l'axe de symétrie x-x′.The legs 9₂ and 9₃ , which are angularly alternated from one face to the other, are also arranged equidistant angularly, each diverging from the corresponding face towards a transverse median plane P of the body 1 and perpendicular to the axis of symmetry xx ′ .

Selon l'invention, les pattes 9₂ et 9₃ sont constituées par les parties terminales repliées de ferrures 10 en "U" qui sont organisées sous forme de deux jeux 11₂ et 11₃. Chaque jeu comprend deux ferrures 10 dont les âmes centrales 12 sont disposées à angle droit pour être liées par leur partie centrale. La liaison des deux ferrures constitutives de chaque jeu peut être assurée de toute façon convenable, notamment par un pion, un rivet ou analogue 13, en toute matière appropriée, choisie pour éviter les risques de corrosion éventuels.According to the invention, the legs 9₂ and 9₃ are constituted by the folded end portions of fittings 10 in "U" which are organized in the form of two sets 11₂ and 11₃ . Each set includes two fittings 10 , the central webs 12 of which are arranged at right angles to be linked by their central part. The two fittings constituting each set can be connected in any suitable way, in particular by a pin, a rivet or the like 13 , in any suitable material, chosen to avoid the risk of possible corrosion.

Les jeux 11₂ et 11₃ sont inclus au surmoulage 8 dans lequel ils peuvent être noyés complètement ou, simplement, en partie enrobés si, par exemple, les ferrures 10 sont conformées initialement pour emboîter le lest 6. Dans tous les cas, les jeux 11₂ et 11₃ sont disposés en imbrication inverse, de part et d'autre du lest 6, en étant décalés de 45° dans le cas présent, de telle sorte que les ailes 14 s'étendent, successivement, de façon alternée, à la périphérie extérieure du lest 6, afin que les pattes 9 qu'elles constituent par leur partie terminale repliée répondent aux conditions d'implantation énumérées ci-dessus. 11₂ and 11₃ sets are included in overmolding 8 in which they can be completely embedded or, simply, partially coated if, for example, the fittings 10 are initially shaped to fit the ballast 6 . In all cases, the sets 11₂ and 11₃ are arranged in reverse nesting, on either side of the ballast 6 , being offset by 45 ° in the present case, so that the wings 14 extend, successively, alternately, at the outer periphery of the ballast 6 , so that the tabs 9 which they constitute by their folded end portion meet the implantation conditions listed above.

Il doit être considéré que, dans l'exemple de réalisation, chaque jeu 11 est constitué de deux ferrures 10 et que le corps 6 est associé à deux jeux, de telle sorte que la mine factice comporte huit pattes élastiques 9. Dans certains cas, une composition différente pourrait être retenue en composant chaque jeu 11, par exemple à partir de trois ferrures 10.It must be considered that, in the exemplary embodiment, each set 11 consists of two fittings 10 and that the body 6 is associated with two sets, so that the dummy lead has eight elastic tabs 9 . In certain cases, a different composition could be chosen by composing each set 11 , for example from three fittings 10 .

D'une façon classique dans la constitution de corps moulés et surmoulés, les jeux 11₂ et 11₃, ainsi que le lest 6, sont disposés dans le moule de formation du surmoulage 8, de telle sorte que les différentes pattes 9 coïncident avec les empreintes positives du moule qui sont chargées de délimiter, dans la périphérie 4 du surmoulage 8, les logements 5 à caractère axial. Ces logements sont destinés à permettre le repliage élastique des différentes pattes 9 pour faciliter la mise en place, le stockage ou le chargement dans des tubes ou containers cylindriques de transport ou de lancement.In a conventional manner in the constitution of molded and overmolded bodies, the sets 11₂ and 11₃ , as well as the ballast 6 , are arranged in the mold for forming the overmolding 8 , so that the different tabs 9 coincide with the positive impressions. of the mold which are responsible for delimiting, in the periphery 4 of the overmolding 8 , the housings 5 of an axial nature. These housings are intended to allow elastic folding of the different tabs 9 to facilitate the installation, storage or loading in cylindrical tubes or containers for transport or launch.

Ainsi que cela ressort des dessins et de la description ci-dessus, une mine d'exercice selon l'invention est constituée en une seule opération par formation du surmoulage 8 autour du lest 6 et des jeux 11₂ et 11₃ préalablement disposés dans le moule.As is apparent from the drawings and the description above, an exercise mine according to the invention is constituted in a single operation by forming the overmolding 8 around the ballast 6 and the sets 11₂ and 11₃ previously placed in the mold.

De la sorte, les opérations d'assemblage des différentes pièces élémentaires, telles que prévues dans l'art antérieur, sont supprimées, ce qui permet de réduire le coût de fabrication. La mine selon l'invention offre une structure plus résistante mécaniquement et moins sujette aux risques de corrosion, plus particulièrement dans les zones d'attache et de flexion des pattes 9 qui sont formées de façon intégrante par les ferrures 10, noyées dans le corps 1, ce qui augmente la tenue des pattes aux chocs lors de l'impact au sol.In this way, the assembly operations of the various elementary parts, as provided for in the prior art, are eliminated, which makes it possible to reduce the manufacturing cost. The mine according to the invention offers a structure which is more resistant mechanically and less subject to the risks of corrosion, more particularly in the areas of attachment and bending of the legs. 9 which are formed integrally by the fittings 10 , embedded in the body 1 , which increases the resistance of the legs to impact upon impact on the ground.

La proposition de réalisation structurelle selon l'invention permet, également, de réduire le nombre de pièces constitutives, puisque deux pattes 9 sont formées par une seule ferrure 10, uniquement par pliage.The proposed structural embodiment according to the invention also makes it possible to reduce the number of constituent parts, since two tabs 9 are formed by a single fitting 10 , only by folding.

De façon à tenir compte de l'épaisseur des pattes 10 dans la partie de liaison avec les ailes 14 des ferrures 10, il est avantageusement prévu de réaliser le surmoulage 8 de manière à délimiter, sur chaque face 2 et 3 et à partir de la périphérie 4, une feuillure 15 d'épaisseur sensiblement égale, sinon supérieure, à celle des pattes 9.In order to take account of the thickness of the tabs 10 in the connection part with the wings 14 of the fittings 10 , provision is advantageously made for molding 8 so as to delimit, on each face 2 and 3 and from the periphery 4 , a rebate 15 of thickness substantially equal to, if not greater than, that of the tabs 9 .

Claims (6)

  1. Exercise mine of the type comprising a body (1) that is generally barrel-shaped, having an axis of symmetry (x-x'), including internal ballast (6) having two faces (2 and 3) parallel on opposite sides of a midplane (P) extending transversely to the axis, and provided with resilient tabs (9) extending outside the periphery of the body from its two faces, the tabs extending along radial directions that alternate from one face to the other and each flaring away from its corresponding face towards the transverse midplane, characterized in that:
    - the body (1) is formed by molding (8) a single piece over the ballast (6);
    - the tabs (9) are formed by the folded-back terminal portions of metal fittings (10) embedded in the portion of the body that surrounds the ballast; and
    - the ballast is formed or constituted so that its center of gravity lies on the axial and transverse axis of symmetry of the body.
  2. Exercise mine according to claim 1, characterized in that the tabs (9) corresponding to a given face are formed by the outwardly folded-back terminal portions of U-shaped fittings (10) whose webs (12) are connected together in their middle portions.
  3. Exercise mine according to claim 1 or 2, characterized in that the tabs (9) of each face are formed by two fittings whose webs (12) are disposed at right angles relative to each other.
  4. Exercise mine according to one of claims 1 to 3, characterized in that the tabs (9) are alternately uniformly spaced apart, angularly.
  5. Exercise mine according to one of claims 1 to 4, characterized in that the tabs (9) are resiliently foldable into open recesses (5) delimited in the periphery of the body.
  6. Exercise mine according to claim 1, characterized in that the ballast (6) is constituted by a mass of dense material surrounded, at least in part, by a shell (7) for connection with the overmolding.
EP92420046A 1991-03-05 1992-02-12 Practice mine Expired - Lifetime EP0502793B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102586 1991-03-05
FR9102586A FR2673709B1 (en) 1991-03-05 1991-03-05 EXERCISE MINE.

Publications (2)

Publication Number Publication Date
EP0502793A1 EP0502793A1 (en) 1992-09-09
EP0502793B1 true EP0502793B1 (en) 1994-09-14

Family

ID=9410327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420046A Expired - Lifetime EP0502793B1 (en) 1991-03-05 1992-02-12 Practice mine

Country Status (4)

Country Link
US (1) US5216198A (en)
EP (1) EP0502793B1 (en)
DE (1) DE69200400T2 (en)
FR (1) FR2673709B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6481327B1 (en) * 2000-06-09 2002-11-19 Alliant Techsystems Inc. Reuseable training dispenser
US6539871B2 (en) * 2001-03-29 2003-04-01 Alliant Techsystems Inc. Degradable practice mine
US6688234B2 (en) * 2002-05-09 2004-02-10 Paintball Combat Llc Symmetrical paint ball land mine
US6640721B1 (en) * 2002-08-01 2003-11-04 The United States Of America As Represented By The Secretary Of The Navy Non-lethal airbag munition
US20070151550A1 (en) * 2005-12-31 2007-07-05 Fitting Adam E Paintball launching device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448708B1 (en) * 1972-02-11 1985-06-14 France Etat FORMED LOAD MINE
FR2475716B2 (en) * 1980-02-11 1985-11-29 France Etat BIDIRECTIONAL DISPERSABLE MINE WITH FORMED LOAD
DE3505172A1 (en) * 1985-02-15 1986-08-21 Pyrotechnische Fabrik F. Feistel GmbH + Co KG, 6719 Göllheim Simulator for mine detonation
DE3714453C1 (en) * 1987-04-30 1988-12-01 Dynamit Nobel Ag Practice explosive body which can be removed again from practice objects non-destructively
US4969398A (en) * 1989-12-04 1990-11-13 The United States Of America As Represented By The Secretary Of The Navy Lane marker
US5069136A (en) * 1990-09-14 1991-12-03 Honeywell Inc. Two-stage release mechanism and method for self-righting a load

Also Published As

Publication number Publication date
FR2673709B1 (en) 1993-05-28
US5216198A (en) 1993-06-01
FR2673709A1 (en) 1992-09-11
DE69200400T2 (en) 1995-02-09
EP0502793A1 (en) 1992-09-09
DE69200400D1 (en) 1994-10-20

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