EP0861413A1 - Grenade fragmentable into low kinetic energy projectiles - Google Patents

Grenade fragmentable into low kinetic energy projectiles

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Publication number
EP0861413A1
EP0861413A1 EP96938299A EP96938299A EP0861413A1 EP 0861413 A1 EP0861413 A1 EP 0861413A1 EP 96938299 A EP96938299 A EP 96938299A EP 96938299 A EP96938299 A EP 96938299A EP 0861413 A1 EP0861413 A1 EP 0861413A1
Authority
EP
European Patent Office
Prior art keywords
grenade
sheath
studs
detonator
grenade according
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.)
Granted
Application number
EP96938299A
Other languages
German (de)
French (fr)
Other versions
EP0861413B1 (en
Inventor
Jean-Pascal Lefebvre
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.)
D'application Des Procedes Lefebvre Ste
Original Assignee
D'application Des Procedes Lefebvre Ste
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Publication date
Application filed by D'application Des Procedes Lefebvre Ste filed Critical D'application Des Procedes Lefebvre Ste
Publication of EP0861413A1 publication Critical patent/EP0861413A1/en
Application granted granted Critical
Publication of EP0861413B1 publication Critical patent/EP0861413B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F42B8/12—Projectiles or missiles
    • F42B8/26—Hand grenades

Definitions

  • the invention relates to the field of firearms and more precisely a fragmentable grenade into projectiles of low kinetic energy so as not to cause serious injuries to the persons affected by them but nevertheless to constitute a sufficiently deterrent weapon against one. violent disturbers of public order.
  • the grenades currently used by the police when they are in critical situation most often contain a product capable of turning into a gas having an unpleasant physiological action on the human being, for example a tear gas.
  • these grenades are not suitable for all situations, and in particular in the event of encirclement or confinement of the user inside a room, because the inconvenient action of the gas applies equally well to this user only to troublemakers.
  • the invention aims to remedy this drawback by creating a grenade allowing its users such as members of the police, in critical situation of policing exceeded, to disperse or at least temporarily destabilize delinquents or violent troublemakers and thus allow themselves the few seconds necessary for a decision to open up or to be arrested, even in a confined space such as a room.
  • the invention relates to a grenade fragmentable into projectiles of low kinetic energy, of the type comprising an igniter device associated with a detonator housed in a sheath, grenade characterized in that it comprises outside the sheath, for take the place of a grenade body, individual studs made of non-metallic material each secured to the sheath by assembly means adapted to disassemble during an explosion of the detonator, so that this explosion causes the projection of the individual pads.
  • FIG. 1 is a schematic longitudinal section of part of a grenade according to the invention
  • FIG. 2 is a schematic cross section of the grenade of FIG. 1, along line II-II of this figure, and
  • FIG. 3 is an enlarged view of part of Figure 2, better showing the shape of a stud forming part of a grenade according to the invention and the attachment of this stud to the sheath for the detonator.
  • the grenade part of which is shown diagrammatically in the figures, comprises a tubular sheath 1 of generally cylindrical shape adapted to internally receive a detonator 2 associated with an igniter 3;
  • the igniter of the igniter-detonator assembly is that of a hand grenade, but naturally an igniter intended to allow the launch of the grenade by means of a firearm, for example such as that known commercially and in the art under the name of igniter BTR, is perfectly usable and interchangeable with this manual igniter 3;
  • the sheath 1 is tubular, open at one end for the introduction of the detonator and the fixing of the igniter, and comprises at its end a bottom 11;
  • the detonator contains an explosive of the "civilian" type, therefore not very rapid, so that the pressure increase is less than that of a conventional grenade.
  • the grenade comprises, instead of a conventional body made for example of cast iron or light alloy (depending on whether the grenade is of the "defensive” or “offensive” type) containing an explosive product, a body made up of separate studs made of non-material metallic each secured to the sheath by means of mutual assembly of the stud and the sheath.
  • the studs 4 can also, while remaining independent of each other, be more secured to the sheath 1 by being pressed against it; if they are, they can be either as a whole, by a single surrounding body, or in groups, by several bodies; it is thus possible, for example, to have an overall connection of the studs to the sheath by means, as an entourage member, of an envelope 5 such as an envelope of heat-shrinkable material, disposed around all of the studs 4 and heat-shrunk on them, as in the figures, or have a joining in groups such as a strapping by means of O-rings.
  • an envelope 5 such as an envelope of heat-shrinkable material
  • the pads 4 are made of a flexible, elastically deformable material, for example an elastomer such as natural rubber or a synthetic equivalent.
  • the attachment of the individual studs 4 to the sheath can be ensured by various assembly means provided that these means allow the studs to disassemble from the sheath easily during an explosion of the detonator and to be thrown in the radial direction outwards relative to the sheath with a regular spatial distribution and neighboring respective energies.
  • each stud comprises, projecting from a body 41, a stud 42 having an outer shape approximately of revolution but comprising a longitudinal slot and a bulge s' extending in particular in a direction perpendicular to the plane of the slot, in the region of its end, stud adapted to be clipped into a hole 12 in the side wall of the sheath, the diameter of which is less than the largest external dimension of the bulge but greater than that of a narrowed area of the stud by which it is connected to the body of the stud.
  • each stud 4 can be secured to the sheath by several pins 42 and several corresponding holes 12 in the sheath.
  • Other types of assemblies are also possible, for example with dovetail, by hooking, by gluing, etc.
  • the assembly is firm enough to prevent separation of the studs from the sheath under the effect of a small force exerted on them (for example that due to the friction of the studs against the fabric of a garment during the introduction or removal of the grenade from a pocket of this item of clothing), they may not otherwise be tightened against the sheath by one (or more) surrounding member (s).
  • the body 41 of the pads can take a large number of shapes, depending on the arrangement of the pads around the sheath.
  • the studs 41 are juxtaposed annularly around the sheath, in several identical crowns themselves juxtaposed in succession along the central axis of the sheath 1 to form a body of grenade externally general cylindrical shape.
  • the body 41 of the studs 4 has a general shape in a straight prism whose base (therefore the cross section) is approximately in the shape of an isosceles trapezium whose parallel rectilinear sides are replaced by concentric curvilinear sides to constitute a circular crown section, the short side belonging to the face of the body 41 of the stud intended to be attached to the sheath and connected to the stud 42 having a radius approximately equal to the outside radius of the sheath 1, and the angles of which are replaced by rounded zones; the dihedral angle formed by the inclined lateral faces of the prism naturally depends on the number of studs constituting the crown, and in the case of six studs, it is approximately 60 degrees; in general, this angle is approximately equal to 360 degrees / n, n being the number of studs extending along the crown.
  • each stud 4 may include a positioning groove for this surround member.
  • the material constituting the sheath can be the same as that constituting the studs.
  • the igniter device may as well be a hand grenade igniter as a rifle grenade igniter or the like.
  • the igniter device comprises a plug to which a lever is attached, and means for attaching the lever to the plug comprising a pin attached to a pulling ring; in the second, it includes a self-propelling plug containing a charge intended to cause the projection of the grenade and a pyrotechnic delay chain, provided with a percussion primer, the assembly, playing the role of a cartridge, being intended to be introduced into the barrel of the rifle, which makes the grenade independent of the weapon itself which triggers the propulsion process.
  • the grenade is projectable by hand, and in the second by means of a firearm such as a rifle as is conventional: the user shoots, the grenade itself, projected, is separates from the igniter device, and can reach a distance close to a hundred meters, the explosion occurring, depending on the setting of the pyrotechnic chain, with a delay of approximately 2.5 to 6 seconds; in both cases, the explosion leads to the disassembly of the studs 4 and the sheath 1, and in most cases the at least partial destruction of the assembly means 42, 12, and of the sheath 1 as well as of the member or members surrounding 5 of the studs, if there are any; the studs 4 are then projected as in the case of a conventional grenade, but with less violence as a result of the choice of the explosive of the detonator and the absence of explosive around the sheath of the detonator, and an impact relatively amortized thanks to the choice of material constituting the studs.

Abstract

A deterrent weapon, particularly a grenade fragmentable into low kinetic energy projectiles so that persons hit by the projectiles are not seriously wounded, is disclosed. The grenade comprises an igniter device (2) combined with a detonator (3) housed in a sleeve (1). The grenade comprises a grenade body consisting of a number of separate pads (4) provided outside the sleeve (1), made of a non-metal material and secured to the sleeve by respective assembly means (12, 42) which are designed to break up when the detonator (3) explodes so that the explosion projects the individual pads. Said grenade may be used in the event of a riot or violent demonstration, particularly in a confined space, and may be thrown manually or launched from a firearm.

Description

"Grenade fragmentable en projectiles de faible énergie cinétique" "Grenade fragmentable into low kinetic energy projectiles"
L'invention concerne le domaine des armes à feu et plus précisément une grenade fragmentable en projectiles de faible énergie cinétique afin de ne pas provoquer de blessures sérieuses aux personnes atteintes par ceux-ci mais de constituer néanmoins une arme suffisamment dissuasive à 1 ' encontre de fauteurs de troubles violents à l'ordre public. Les grenades utilisées actuellement par les forces de l'ordre lorsqu'elles sont en situation critique, contiennent le plus souvent un produit susceptible de se transformer en gaz ayant une action physiologique incommodante sur l'être humain, par exemple un gaz lacrymogène. Cependant, ces grenades ne sont pas adaptées à toutes les situations, et en particulier en cas d'encerclement ou de confinement de l'utilisateur à l'intérieur d'un local, car l'action incommodante du gaz s'applique aussi bien à cet utilisateur qu'aux fauteurs de troubles.The invention relates to the field of firearms and more precisely a fragmentable grenade into projectiles of low kinetic energy so as not to cause serious injuries to the persons affected by them but nevertheless to constitute a sufficiently deterrent weapon against one. violent disturbers of public order. The grenades currently used by the police when they are in critical situation, most often contain a product capable of turning into a gas having an unpleasant physiological action on the human being, for example a tear gas. However, these grenades are not suitable for all situations, and in particular in the event of encirclement or confinement of the user inside a room, because the inconvenient action of the gas applies equally well to this user only to troublemakers.
L'invention a pour but de remédier à cet inconvénient en créant une grenade permettant à ses utilisateurs tels que des membres de forces de l'ordre, en situation critique de maintien de l'ordre dépassée, de disperser ou au moins de déstabiliser momentanément des délinquants ou des fauteurs de troubles violents et ainsi de s'allouer les quelques secondes nécessaires à une décision de désenclavement ou d'interpellation, et cela même dans un emplacement confiné tel qu'un local. A cet effet, l'invention concerne une grenade fragmentable en projectiles de faible énergie cinétique, du type comportant un dispositif allumeur associé à un détonateur logé dans une gaine, grenade caractérisée en ce qu'elle comporte à l'extérieur de la gaine, pour tenir lieu de corps de grenade, des plots individuels en matière non métallique solidarisés chacun à la gaine par des moyens d'assemblage adaptés à se désassembler lors d'une explosion du détonateur, de sorte que cette explosion entraîne la projection des plots individuels.The invention aims to remedy this drawback by creating a grenade allowing its users such as members of the police, in critical situation of policing exceeded, to disperse or at least temporarily destabilize delinquents or violent troublemakers and thus allow themselves the few seconds necessary for a decision to open up or to be arrested, even in a confined space such as a room. To this end, the invention relates to a grenade fragmentable into projectiles of low kinetic energy, of the type comprising an igniter device associated with a detonator housed in a sheath, grenade characterized in that it comprises outside the sheath, for take the place of a grenade body, individual studs made of non-metallic material each secured to the sheath by assembly means adapted to disassemble during an explosion of the detonator, so that this explosion causes the projection of the individual pads.
Comme les plots sont solidarisés à la gaine sans interposition de produit explosif, et comme ces plots sont en une matière non métallique, leur énergie cinétique est relativement faible et l'impact est sensiblement amorti, ce qui réduit notablement leur capacité à provoquer des blessures graves. D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre d'une forme de réalisation de l'invention donnée à titre d'exemple non limitatif et illustrée par les dessins ci- joints dans lesquels : - la figure 1 est une section longitudinale schématique d'une partie d'une grenade selon 1 ' invention, la figure 2 est une section transversale schématique de la grenade de la figure 1, selon la ligne II-II de cette figure, etAs the studs are secured to the sheath without interposing an explosive product, and as these studs are made of a non-metallic material, their kinetic energy is relatively low and the impact is significantly damped, which significantly reduces their ability to cause serious injury . Other characteristics and advantages of the invention will emerge from the description which follows of an embodiment of the invention given by way of nonlimiting example and illustrated by the attached drawings in which: - Figure 1 is a schematic longitudinal section of part of a grenade according to the invention, FIG. 2 is a schematic cross section of the grenade of FIG. 1, along line II-II of this figure, and
- la figure 3 est une vue agrandie d'une partie de la figure 2, montrant mieux la forme d'un plot entrant dans la constitution d'une grenade selon l'invention et la solidarisation de ce plot à la gaine pour le détonateur.- Figure 3 is an enlarged view of part of Figure 2, better showing the shape of a stud forming part of a grenade according to the invention and the attachment of this stud to the sheath for the detonator.
La grenade dont une partie est représentée schématiquement sur les figures comporte une gaine tubulaire 1 de forme générale cylindrique adaptée à recevoir intérieurement un détonateur 2 associé à un allumeur 3 ; sur la figure 1, l'allumeur de l'ensemble allumeur-détonateur dont le contour est esquissé en trait fin, est celui d'une grenade à main, mais naturellement un allumeur destiné à permettre le lancement de la grenade au moyen d'une arme à feu, par exemple tel que celui connu commercialement et dans la technique sous le nom d'allumeur BTR, est parfaitement utilisable et interchangeable avec cet allumeur manuel 3 ; la gaine 1 est tubulaire, ouverte à une extrémité pour 1 ' introduction du détonateur et la fixation de l'allumeur, et comporte à son extrémité un fond 11 ; de préférence, le détonateur contient un explosif de type "civil", donc peu rapide, de telle sorte que la montée en pression soit inférieure à celle d'une grenade conventionnelle.The grenade, part of which is shown diagrammatically in the figures, comprises a tubular sheath 1 of generally cylindrical shape adapted to internally receive a detonator 2 associated with an igniter 3; in FIG. 1, the igniter of the igniter-detonator assembly, the outline of which is outlined in fine lines, is that of a hand grenade, but naturally an igniter intended to allow the launch of the grenade by means of a firearm, for example such as that known commercially and in the art under the name of igniter BTR, is perfectly usable and interchangeable with this manual igniter 3; the sheath 1 is tubular, open at one end for the introduction of the detonator and the fixing of the igniter, and comprises at its end a bottom 11; preferably, the detonator contains an explosive of the "civilian" type, therefore not very rapid, so that the pressure increase is less than that of a conventional grenade.
La grenade comporte, au lieu d'un corps classique constitué par exemple en fonte ou en alliage léger (selon que la grenade est du type "défensive" ou "offensive") contenant un produit explosif, un corps constitué de plots distincts en matière non métallique solidarisés chacun à la gaine par des moyens d'assemblage mutuel du plot et de la gaine. Les plots 4 peuvent également, tout en restant indépendants les uns des autres, être de plus solidarisés à la gaine 1 en étant serrés contre elle ; s'ils le sont, ils peuvent l'être soit en bloc, par un unique organe d'entourage, soit par groupes, par plusieurs organes ; on peut par exemple ainsi avoir une solidarisation globale des plots à la gaine au moyen, en tant qu'organe d'entourage, d'une enveloppe 5 telle qu'une enveloppe en matière thermorétractable, disposée autour de l'ensemble des plots 4 et thermorétractée sur eux, comme sur les figures, ou avoir une solidarisation par groupes telle qu'un cerclage au moyen de joints toriques.The grenade comprises, instead of a conventional body made for example of cast iron or light alloy (depending on whether the grenade is of the "defensive" or "offensive" type) containing an explosive product, a body made up of separate studs made of non-material metallic each secured to the sheath by means of mutual assembly of the stud and the sheath. The studs 4 can also, while remaining independent of each other, be more secured to the sheath 1 by being pressed against it; if they are, they can be either as a whole, by a single surrounding body, or in groups, by several bodies; it is thus possible, for example, to have an overall connection of the studs to the sheath by means, as an entourage member, of an envelope 5 such as an envelope of heat-shrinkable material, disposed around all of the studs 4 and heat-shrunk on them, as in the figures, or have a joining in groups such as a strapping by means of O-rings.
De préférence, les plots 4 sont en un matériau souple deformable élastiquement, par exemple un élastomère tel que le caoutchouc naturel ou un équivalent synthétique.Preferably, the pads 4 are made of a flexible, elastically deformable material, for example an elastomer such as natural rubber or a synthetic equivalent.
La solidarisation des plots individuels 4 à la gaine peut être assurée par des moyens d'assemblage divers pourvu que ces moyens permettent aux plots de se désassembler de la gaine aisément lors d'une explosion du détonateur et d'être projetés en direction radiale vers l'extérieur par rapport à la gaine avec une répartition spatiale régulière et des énergies respectives voisines. Dans le cas représenté sur les figures, les moyens d'assemblage sont constitués par le fait que chaque plot comporte, en saillie sur un corps 41, un téton 42 présentant une forme extérieure approximativement de révolution mais comportant une fente longitudinale et un renflement s'étendant notamment dans une direction perpendiculaire au plan de la fente, dans la région de son extrémité, téton adapté à être clipsé dans un trou 12 de la paroi latérale de la gaine, dont le diamètre est inférieur à la plus grande dimension extérieure du renflement mais supérieur à celui d'une zone rétrécie du téton par lequel celui-ci est raccordé au corps du plot. Cependant, si la matière constituant le téton 42 est suffisamment compressible, celui-ci peut éventuellement ne comporter ni fente, ni renflement, ni zone rétrécie, le diamètre du trou 12 correspondant de la gaine étant légèrement inférieur au diamètre extérieur du téton lorsque celui-ci n'est pas comprimé, le téton étant ensuite emboîté à force dans le trou. Egalement, chaque plot 4 peut être solidarisé à la gaine par plusieurs tétons 42 et plusieurs trous 12 correspondants dans la gaine. D'autres types d'assemblages sont également possibles, par exemple à queue d'aronde, par accrochage, par collage, etc. Si l'assemblage est suffisamment ferme pour empêcher la désolidarisation des plots par rapport à la gaine sous l'effet d'un faible effort exercé sur eux (par exemple celui dû au frottement des plots contre le tissu d'un vêtement lors de l'introduction ou du retrait de la grenade d'une poche de ce vêtement) , ils peuvent ne pas être par ailleurs serrés contre la gaine par un (ou plusieurs) organe (s) d'entourage. Le corps 41 des plots peut revêtir un grand nombre de formes, en fonction de la disposition des plots autour de la gaine.The attachment of the individual studs 4 to the sheath can be ensured by various assembly means provided that these means allow the studs to disassemble from the sheath easily during an explosion of the detonator and to be thrown in the radial direction outwards relative to the sheath with a regular spatial distribution and neighboring respective energies. In the case shown in the figures, the assembly means are constituted by the fact that each stud comprises, projecting from a body 41, a stud 42 having an outer shape approximately of revolution but comprising a longitudinal slot and a bulge s' extending in particular in a direction perpendicular to the plane of the slot, in the region of its end, stud adapted to be clipped into a hole 12 in the side wall of the sheath, the diameter of which is less than the largest external dimension of the bulge but greater than that of a narrowed area of the stud by which it is connected to the body of the stud. However, if the material constituting the stud 42 is sufficiently compressible, the latter may possibly have neither slot, nor bulge, nor narrowed zone, the diameter of the corresponding hole 12 of the sheath being slightly less than the outside diameter of the stud when the latter it is not compressed, the nipple then being forced into the hole. Also, each stud 4 can be secured to the sheath by several pins 42 and several corresponding holes 12 in the sheath. Other types of assemblies are also possible, for example with dovetail, by hooking, by gluing, etc. If the assembly is firm enough to prevent separation of the studs from the sheath under the effect of a small force exerted on them (for example that due to the friction of the studs against the fabric of a garment during the introduction or removal of the grenade from a pocket of this item of clothing), they may not otherwise be tightened against the sheath by one (or more) surrounding member (s). The body 41 of the pads can take a large number of shapes, depending on the arrangement of the pads around the sheath.
Dans l'exemple représenté sur les figures, les plots 41 sont juxtaposés annulairement autour de la gaine, en plusieurs couronnes identiques elles-mêmes juxtaposées en se succédant le long de l'axe central de la gaine 1 pour constituer un corps de grenade extérieurement de forme générale cylindrique. Le corps 41 des plots 4 présente une forme générale en prisme droit dont la base (donc la section droite) est en forme approximativement de trapèze isocèle dont les côtés rectilignes parallèles sont remplacés par des côtés curvilignes concentriques pour constituer un tronçon de couronne circulaire, le petit côté appartenant à la face du corps 41 du plot destinée à être accolée à la gaine et raccordée au téton 42 ayant un rayon approximativement égal au rayon extérieur de la gaine 1, et dont les angles sont remplacés par des zones arrondies ; l'angle dièdre formé par les faces latérales inclinées du prisme dépend naturellement du nombre de plots constituant la couronne, et dans le cas de six plots, il est approximativement de 60 degrés ; de manière générale, cet angle est approximativement égal à 360 degrés/n, n étant le nombre de plots s'étendant le long de la couronne.In the example shown in the figures, the studs 41 are juxtaposed annularly around the sheath, in several identical crowns themselves juxtaposed in succession along the central axis of the sheath 1 to form a body of grenade externally general cylindrical shape. The body 41 of the studs 4 has a general shape in a straight prism whose base (therefore the cross section) is approximately in the shape of an isosceles trapezium whose parallel rectilinear sides are replaced by concentric curvilinear sides to constitute a circular crown section, the short side belonging to the face of the body 41 of the stud intended to be attached to the sheath and connected to the stud 42 having a radius approximately equal to the outside radius of the sheath 1, and the angles of which are replaced by rounded zones; the dihedral angle formed by the inclined lateral faces of the prism naturally depends on the number of studs constituting the crown, and in the case of six studs, it is approximately 60 degrees; in general, this angle is approximately equal to 360 degrees / n, n being the number of studs extending along the crown.
Dans le cas où il existe des organes d'entourage encerclant chacun une couronne, la face extérieure bombée de chaque plot 4 peut comporter une rainure de positionnement pour cet organe d'entourage.In the case where there are surround members each surrounding a crown, the curved outer face of each stud 4 may include a positioning groove for this surround member.
Dans la forme de réalisation représentée sur les figures, on a quatre couronnes de six plots prismatiques chacune, sur une seule couche, donc vingt-quatre plots, se succédant sur une longueur de 120 mm environ avec un diamètre extérieur de soixante millimètres, mais cet exemple n'est naturellement pas limitatif, pas plus en ce qui concerne la forme des plots, que leur nombre, ou les dimensions de la grenade. Il existe un léger jeu entre les plots de la même couronne et entre les couronnes, de l'ordre de quelques dixièmes de millimètres, et une seule couche de plots ce .qui semble avantageux pour faciliter une répartition homogène dans l'espace des plots lors de leur projection.In the embodiment shown in the figures, there are four crowns of six prismatic studs each, on a single layer, therefore twenty-four studs, succeeding each other over a length of approximately 120 mm with an outside diameter of sixty millimeters, but this example is naturally not limiting, no more as regards the shape of the studs, as their number, or the dimensions of the grenade. There is a slight clearance between the studs of the same crown and between the crowns, of the order of a few tenths of a millimeter, and a single layer of studs, which seems advantageous to facilitate a homogeneous distribution in the space of the studs. of their projection.
Le matériau constituant la gaine peut être le même que celui constituant les plots. Comme on l'a vu, le dispositif allumeur peut aussi bien être un allumeur de grenade à main qu'un allumeur de grenade à fusil ou analogue.The material constituting the sheath can be the same as that constituting the studs. As we have seen, the igniter device may as well be a hand grenade igniter as a rifle grenade igniter or the like.
Dans le premier cas, le dispositif allumeur comporte un bouchon auquel est solidarisé un levier, et des moyens de solidarisation du levier au bouchon comprenant une goupille solidarisée à un anneau de tirage ; dans le deuxième, il comporte un bouchon d' autopropulsion contenant une charge destinée à provoquer la projection de la grenade et une chaîne pyrotechnique de retard, muni d'une amorce de percussion, l'ensemble, jouant le rôle d'une cartouche, étant destiné à être introduit dans le canon du fusil, ce qui rend la grenade indépendante de 1 ' arme proprement dite qui déclenche le processus de propulsion. Ainsi, dans le premier cas, la grenade est projetable à la main, et dans le second au moyen d'une arme à feu telle qu'un fusil comme cela est classique : l'utilisateur tire, la grenade proprement dite, projetée, se sépare du dispositif allumeur, et peut atteindre une distance proche d'une centaine de mètres, l'explosion survenant, selon le réglage de la chaîne pyrotechnique, avec un retard de 2,5 à 6 secondes environ ; dans les deux cas, l'explosion entraîne le désassemblage des plots 4 et de la gaine 1, et dans la plupart des cas la destruction au moins partielle des moyens d'assemblage 42, 12, et de la gaine 1 ainsi que de l'organe ou des organes d'entourage 5 des plots, s'il y en a ; les plots 4 sont alors projetés comme dans le cas d'une grenade conventionnelle, mais avec une violence moins grande par suite du choix de l'explosif du détonateur et de l'absence d'explosif autour de la gaine du détonateur, et un impact relativement amorti grâce au choix du matériau constituant les plots.In the first case, the igniter device comprises a plug to which a lever is attached, and means for attaching the lever to the plug comprising a pin attached to a pulling ring; in the second, it includes a self-propelling plug containing a charge intended to cause the projection of the grenade and a pyrotechnic delay chain, provided with a percussion primer, the assembly, playing the role of a cartridge, being intended to be introduced into the barrel of the rifle, which makes the grenade independent of the weapon itself which triggers the propulsion process. Thus, in the first case, the grenade is projectable by hand, and in the second by means of a firearm such as a rifle as is conventional: the user shoots, the grenade itself, projected, is separates from the igniter device, and can reach a distance close to a hundred meters, the explosion occurring, depending on the setting of the pyrotechnic chain, with a delay of approximately 2.5 to 6 seconds; in both cases, the explosion leads to the disassembly of the studs 4 and the sheath 1, and in most cases the at least partial destruction of the assembly means 42, 12, and of the sheath 1 as well as of the member or members surrounding 5 of the studs, if there are any; the studs 4 are then projected as in the case of a conventional grenade, but with less violence as a result of the choice of the explosive of the detonator and the absence of explosive around the sheath of the detonator, and an impact relatively amortized thanks to the choice of material constituting the studs.
Bien entendu, l'invention n'est pas limitée à la forme de réalisation ci-dessus décrite et représentée, et on pourra en prévoir d'autres formes sans sortir de son cadre. Of course, the invention is not limited to the embodiment described above and shown, and other forms can be provided without departing from its scope.

Claims

REVENDICATTONSCLAIM
1 - Grenade fragmentable en projectiles de faible énergie cinétique, du type comportant un dispositif allumeur (3) associé à un détonateur [2) logé dans une gaine (1) , grenade caractérisée en ce qu'elle comporte à l'extérieur de la gaine (1) , pour tenir lieu de corps de grenade, des plots (4) individuels en matière non métallique solidarisés chacun à la gaine par des moyens d'assemblage (12, 41) adaptés à se désassembler lors d'une explosion du détonateur (2) , de sorte que cette explosion entraîne la projection des plots individuels.1 - Grenade fragmentable into low kinetic energy projectiles, of the type comprising an igniter device (3) associated with a detonator [2) housed in a sheath (1), grenade characterized in that it comprises outside the sheath (1), to take the place of a grenade body, individual studs (4) made of non-metallic material, each secured to the sheath by assembly means (12, 41) adapted to disassemble during an explosion of the detonator ( 2), so that this explosion causes the projection of the individual studs.
2 - Grenade selon la revendication 1, caractérisée en ce qu'elle comporte, autour des plots (4) , au moins un organe d'entourage (5) serrant ceux-ci contre la gaine (1) , adapté à être détruit lors d'une explosion du détonateur (2) .2 - Grenade according to claim 1, characterized in that it comprises, around the studs (4), at least one surrounding member (5) clamping them against the sheath (1), adapted to be destroyed during 'an explosion of the detonator (2).
3 - Grenade selon la revendication 1, caractérisée en ce que les plots (4) sont en un matériau souple deformable élastiquement.3 - Grenade according to claim 1, characterized in that the studs (4) are made of a flexible elastically deformable material.
4 - Grenade selon la revendication 3, caractérisée en ce que le matériau est un élastomère.4 - Grenade according to claim 3, characterized in that the material is an elastomer.
5 - Grenade selon la revendication 1, caractérisée en ce que les moyens d'assemblage (12, 42) sont des moyens de clipsage dont sont munis respectivement la gaine (1) et chacun des plots individuels (4) .5 - Grenade according to claim 1, characterized in that the assembly means (12, 42) are clipping means which are provided respectively with the sheath (1) and each of the individual studs (4).
6 - Grenade selon la revendication 1, caractérisée en ce que les plots (4) sont juxtaposés annulairement autour de la gaine (1) , sur plusieurs couronnes elles-mêmes juxtaposées le long d'un même axe central pour constituer un corps extérieurement de forme générale cylindrique.6 - Grenade according to claim 1, characterized in that the studs (4) are juxtaposed annularly around the sheath (1), on several rings themselves juxtaposed along the same central axis to form an externally shaped body general cylindrical.
7 - Grenade selon la revendication 1, caractérisée en ce que les plots présentent des faces latérales inclinées. 8 - Grenade selon la revendication 2, caractérisée en ce que l'organe d'entourage (5) est une enveloppe en matériau thermorétractable, qui a été thermorétractée. 9 - Grenade selon la revendication 1, caractérisée en ce que le dispositif allumeur (3) comporte un bouchon auquel est solidarisé un levier, et des moyens de solidarisation du levier au bouchon comprenant une goupille solidarisée à un anneau. 10 - Grenade selon la revendication 1, caractérisée en ce que le dispositif allumeur comporte un bouchon contenant au moins une charge pyrotechnique, et une amorce. 7 - Grenade according to claim 1, characterized in that the studs have inclined side faces. 8 - Grenade according to claim 2, characterized in that the surrounding member (5) is an envelope of heat shrinkable material, which has been heat shrunk. 9 - Grenade according to claim 1, characterized in that the igniter device (3) comprises a plug which is secured to a lever, and means for securing the lever to the plug comprising a pin secured to a ring. 10 - Grenade according to claim 1, characterized in that the igniter device comprises a plug containing at least one pyrotechnic charge, and a primer.
EP96938299A 1995-11-16 1996-11-12 Grenade fragmentable into low kinetic energy projectiles Expired - Lifetime EP0861413B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9513590A FR2741436B1 (en) 1995-11-16 1995-11-16 FRAGMENTABLE GRENADE IN LOW CINETIC ENERGY PROJECTILES
FR9513590 1995-11-16
PCT/FR1996/001784 WO1997018435A1 (en) 1995-11-16 1996-11-12 Grenade fragmentable into low kinetic energy projectiles

Publications (2)

Publication Number Publication Date
EP0861413A1 true EP0861413A1 (en) 1998-09-02
EP0861413B1 EP0861413B1 (en) 2000-05-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96938299A Expired - Lifetime EP0861413B1 (en) 1995-11-16 1996-11-12 Grenade fragmentable into low kinetic energy projectiles

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EP (1) EP0861413B1 (en)
AT (1) ATE193373T1 (en)
AU (1) AU7577196A (en)
DE (1) DE69608569T2 (en)
ES (1) ES2146912T3 (en)
FR (1) FR2741436B1 (en)
GR (1) GR3034183T3 (en)
PT (1) PT861413E (en)
TR (1) TR199800867T2 (en)
WO (1) WO1997018435A1 (en)

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FR2923004A1 (en) 2007-10-26 2009-05-01 Applic Des Procedes Lefebvre S Fragmentable grenade, has igniter including fragmentable grenade body at exterior of sheath and complementary fixation unit fixing body on sheath in axial position, where fixation unit is in form of stop forming end plate

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FR2867849B1 (en) * 2004-03-16 2006-07-21 Catherine Tanguy FRAGMENTABLE GRENAGE
FR2896868B1 (en) 2006-01-30 2010-07-30 Soc D Application Des Procedes Lefebvre FRAGMENTABLE GRENADE IN PROJECTILES OF LOW KINETIC ENERGY.
FR2915794B1 (en) * 2007-05-02 2009-07-24 Davey Bickford Snc FRAGMENTATION GRENADE AND METHOD FOR MANUFACTURING A PROJECTILE ASSEMBLY
FR2965910B1 (en) 2010-10-08 2012-11-02 Armement Et D Etudes Alsetex Soc D NON-LETHAL GRENADE
FR2989457B1 (en) 2012-04-12 2017-03-17 Soc D'armement Et D'etudes Alsetex NON-LETHAL FLAKE GRENADE COMPRISING MEANS FOR MAINTAINING IGNITION PLUG
US10030955B1 (en) * 2016-09-30 2018-07-24 The United States Of America As Represented By The Secretary Of The Army Multi-purpose non-lethal blunt trauma grenade

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US3911824A (en) * 1973-07-13 1975-10-14 Aai Corp Deterrent ammunition projectile
CH581820A5 (en) * 1974-06-04 1976-11-15 Semperit Ag
CH627266A5 (en) * 1978-02-20 1981-12-31 Semperit Ag Practice hand grenade
US4656946A (en) * 1984-06-11 1987-04-14 The State Of Israel, Ministry Of Defence, Israel Military Industries Rifle launched ammunition for mob dispersion

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Publication number Priority date Publication date Assignee Title
FR2923004A1 (en) 2007-10-26 2009-05-01 Applic Des Procedes Lefebvre S Fragmentable grenade, has igniter including fragmentable grenade body at exterior of sheath and complementary fixation unit fixing body on sheath in axial position, where fixation unit is in form of stop forming end plate

Also Published As

Publication number Publication date
FR2741436B1 (en) 1998-01-30
PT861413E (en) 2000-10-31
GR3034183T3 (en) 2000-11-30
ATE193373T1 (en) 2000-06-15
ES2146912T3 (en) 2000-08-16
AU7577196A (en) 1997-06-05
FR2741436A1 (en) 1997-05-23
DE69608569D1 (en) 2000-06-29
EP0861413B1 (en) 2000-05-24
TR199800867T2 (en) 1998-09-21
WO1997018435A1 (en) 1997-05-22
DE69608569T2 (en) 2001-01-18

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