WO2005064266A1 - Cartridge - Google Patents

Cartridge Download PDF

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Publication number
WO2005064266A1
WO2005064266A1 PCT/FR2004/050752 FR2004050752W WO2005064266A1 WO 2005064266 A1 WO2005064266 A1 WO 2005064266A1 FR 2004050752 W FR2004050752 W FR 2004050752W WO 2005064266 A1 WO2005064266 A1 WO 2005064266A1
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WO
WIPO (PCT)
Prior art keywords
shutter
cartridge
charge
powder
flock
Prior art date
Application number
PCT/FR2004/050752
Other languages
French (fr)
Inventor
Jean-Pierre Denis
Original Assignee
Jean-Pierre Denis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jean-Pierre Denis filed Critical Jean-Pierre Denis
Publication of WO2005064266A1 publication Critical patent/WO2005064266A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/08—Wads, i.e. projectile or shot carrying devices, therefor

Definitions

  • the present invention relates to a cartridge formed of a socket with a base provided with a primer, the cartridge containing a charge of powder followed by a shutter, a fluff and a charge to push (pellets / projectiles).
  • the invention also applies to any projectile such as a grenade or even a powered product constituting a projectile.
  • the object of the present invention is to develop cartridges and more generally means for propelling or launching projectiles and similar products having predictable constant performance, whatever the conditions of storage of the cartridges (humidity, duration, temperature). Description and advantages of the invention To this end, the invention relates to a cartridge of the type defined above, characterized in that the fill is a washer of synthetic rubber formed by a slice cut from an extruded bead of foam rubber having a skin .
  • the characteristics of the wad depend, in addition to its thickness, on the characteristics specific to the bead of extruded synthetic foam, defined in a particularly precise manner according to the manufacturing conditions, this makes it possible to obtain wads having ca- perfectly constant characteristics, insensitive to storage conditions such as humidity and temperature or humidity and temperature variations.
  • the manufacturing characteristics chosen for the synthetic foam rubber cord there will be more or less hard or flexible wads which corresponds to a very wide range of possible and predictable characteristics.
  • the hardness of the wad according to the invention affects the more or less significant recoil of the weapon.
  • this wad has a waterproof skin or crust which does not allow moisture to pass when the wad is compressed in the sleeve. Due to the synthetic rubber foam, this wad offers substantially constant physical and mechanical characteristics between very low temperatures of the order of - 30 to - 40 ° C up to very high temperatures of the order from + 100 to + 120 ° C.
  • This flock is of particularly advantageous suppleness which makes it possible to ensure an excellent seal against the powder (humidity or drying) when it is compressed in the sleeve.
  • the powder retains, during storage of the ammunition a constant humidity level identical to that desired during loading, giving it, during its use, constant ballistic qualities.
  • the wad allows to propel the projectile (s) smoothly.
  • a first phase at the start of the blow there is total crushing of the flock then, in a second phase, the fluff relaxes and starts again forwards and finally, in a third phase, it relaxes completely and thus releases the energy it has stored by pushing the charge forward; the flock itself being obviously propelled by the expansion of the propellant charge.
  • the pressure of the gases compressing the flock either directly, or via a shutter or a cardboard makes it possible to avoid gas leaks along the projectile, leaks always affecting accuracy.
  • the fill therefore provides multiple seals.
  • the flock is formed in a foam having practically closed or completely closed pores. This allows elastic characteristics to be obtained. ques very satisfactory because the compression of the fluff corresponds to a compression of the volumes of gas accumulated in the closed pores.
  • FIG. 1 is a schematic axial section view of a cartridge according to the invention
  • FIG. 2 is a sectional view of another embodiment of a shutter
  • FIG. 3 is a sectional view of another variant of a shutter
  • FIG. 4 is a schematic view of an extruded foam bead, with its skin and its heart, showing a cut slice constituting the wad.
  • the invention relates to a cartridge composed of a socket 1, for example of plastic, cylindrical material, carried by a base 2 provided with a primer 3.
  • the socket 1 and the base 3 receive, starting from the cavity 21 of the base 2 into which the primer opens, a charge of powder 4 chosen according to the firing characteristics that this cartridge must offer.
  • powder charge 4 is a shutter 5, in particular of molded plastic. This disc-shaped shutter 5 closes the top of the volume occupied by the powder 4 to constitute a sort of piston. Above the shutter 5, there is a wad 6.
  • This wad 6 is constituted by a washer of synthetic foam rubber. This washer is in fact a slice of a cord of synthetic foam rubber cut to the height H required according to the characteristics that one wants to give to the ammunition.
  • the flock 6 is then followed by the projectile (s) 7.
  • projectiles may consist of a filling of hardened pellets or of a sub-calibrated projectile 71 with its container 72.
  • the assembly is closed on top either by crimping in rosette or by a crimp 8 simply folded down to retain the projectile if it is unique.
  • the shutter 5 can have different shapes: that of a flat disc with lip or without peripheral lip like the lip 51 shown and which surrounds the underside of the shutter.
  • the shutter 5 may also include a peripheral lip on the top (lip not shown) with or without the lower lip.
  • a pin 52 for example a central pin, may be provided, integral with the shutter 5 since the latter is made of a rigid material or planted in the shutter.
  • This connecting member thus formed by the pin 52 can also be a point molded with the other parts of the shutter.
  • the shutter 105 has a body 150 of convex shape, the cavity 152 of which is situated on the side of the powder charge.
  • FIG. 3 shows another alternative embodiment of the shutter 205 whose body 250 is conical, bordered by a peripheral lip 251 with, optionally, a cavity 252 more developed than that simply delimited by the. peripheral lip 251.
  • This shutter 205 has a similar effect to the shutter 105 of FIG. 2.
  • the spacing of the peripheral lip 251 and, on the other hand, the depression the shutter in the flock 6 which produces its crushing and greater lateral tightness of the flock.
  • the reaction of the wad 6 and of the projectile 7 at the start of the shot is represented by the arrow R.
  • the wad 6 is a slice of a bead of circular section extruded from synthetic foam rubber .
  • the thickness H of the wafer is chosen according to the characteristics to be given to the projectile.
  • the rubber is preferably with relatively closed or even completely closed pores, so as to constitute an elastic cushion between the plastic shutter 5 placed above the powder charge 4 and the pellets or the bottom of the container. and its projectile 7, 71, 72. Due to its manufacture by extrusion in the form of a bead 60 and not of cutting from a foam plate, by a punching operation, this washer 6 has an exterior skin 61, which is waterproof, which prevents the penetration of moisture through the socket 1 or along the interior walls of the socket from the crimped end to the powder level.
  • the heart 62 of the cord 60 surrounded by the skin 61 is a foam offering the required elasticity characteristics.

Abstract

A cartridge in the form of a bushing (1) with a base (2) provided with a primer. The cartridge contains a charge of powder (4) followed by an over-powder wad (6) obturator (5) and a thrust charge (lead/projectiles) (7). The over-powder wad (6) is a synthetic rubber washer formed by a sliced cut-out from an extruded cordon of rubber foam with a skin.

Description

« Cartouche » Domaine de l'invention La présente invention concerne une cartouche formée d'une douille avec un culot muni d'une amorce, la cartouche contenant une charge de poudre suivie d'un obturateur, d'une bourre et d'une charge à pousser (plombs / projectiles). L'invention s'applique également à tout projectile tel qu'une grenade ou même un produit propulsé constituant un projectile. Field of the Invention The present invention relates to a cartridge formed of a socket with a base provided with a primer, the cartridge containing a charge of powder followed by a shutter, a fluff and a charge to push (pellets / projectiles). The invention also applies to any projectile such as a grenade or even a powered product constituting a projectile.
Etat de la technique De telles cartouches existent sous de multiples versions. La charge de poudre est plus ou moins importante en fonction des plombs ou, plus généralement, du ou des projectiles à pousser. Ces cartouches comportent des bourres pour ces différents types de projectiles :State of the art Such cartridges exist in multiple versions. The powder charge is more or less important depending on the pellets or, more generally, the projectile (s) to be pushed. These cartridges include fillers for these different types of projectiles:
- des bourres en feutre graissé ou non graissé (il s'agit de bourres dé- coupées),- fillings made of greased or ungreased felt (these are cut fillings),
- des bourres découpées dans des planches de bois aggloméré mou ou dur,- wadding cut from planks of soft or hard agglomerated wood,
- des bourres en mousse plastique sans élasticité. Il existe également des bourres en crin, plus traditionnelles. Dans le cas des bourres formées de fibres, du fait même de la réalisation de ces, bourres, on coupe les fibres qui laissent passer plus , ou moins d'humidité vers la poudre ce qui détériore les performances de la cartouche. But de l'invention La présente invention a pour but de développer des cartouches et plus généralement des moyens de propulsion ou de lancement de projectiles et produits analogues ayant des performances constantes prévisibles, quelles que soient les conditions de stockage des cartouches (humidité, durée, température). Exposé et avantages de l'invention A cet effet, l'invention concerne une cartouche du type défini ci-dessus caractérisée en ce que la bourre est une rondelle de caoutchouc synthétique formée par une tranche découpée dans un cordon extrudé de caoutchouc mousse ayant une peau. Comme les caractéristiques de la bourre dépendent, outre de son épaisseur, des caractéristiques propres au cordon de mousse synthétique extrudé, définies de manière particulièrement précises selon les conditions de fabrication, cela permet d'obtenir des bourres ayant des ca- ractéristiques parfaitement constantes, insensibles aux conditions de stockage teEe que l'humidité et la température ou les variations d'humidité et de température. Selon les caractéristiques de fabrication choisies pour le cordon de caoutchouc mousse synthétique, on aura des bourres plus ou moins dures ou souples ce qui correspond à un éventail très important de caractéristiques possibles et prévisibles. La dureté de la bourre selon l'invention joue sur le recul plus ou moins important de l'arme. Grâce à l'extrusion du cordon de caoutchouc mousse synthétique dans lequel est découpé une bourre de hauteur (épaisseur de la tranche) plus ou moins importante, cette bourre présente une peau ou croûte étanche qui ne laisse pas passer l'humidité lorsque la bourre est comprimée dans la douille. Du fait de la mousse de caoutchouc de syn- thèse, cette bourre offre des caractéristiques physiques et mécaniques sensiblement constantes entre des températures très basses de l'ordre de - 30 à - 40°C jusqu'à des températures très élevées de l'ordre de + 100 à + 120°C. Cette bourre est d'une souplesse particulièrement intéressante qui permet d'assurer une excellente êtanchéité envers la poudre (humidité ou dessiccation) lorsqu'elle est comprimée dans la douille. Il s'ensuit que la poudre conserve, durant le stockage de la munition un, taux d'humidité constant identique à celui désiré lors du chargement, lui conférant, lors de son utilisation, des qualités balistiques constantes. Mécaniquement, au départ du coup, la bourre permet de propulser le ou les projectiles en douceur. Dans une première phase au départ du coup, il y a écrasement total de la bourre puis, dans une seconde phase, la bourre se détend et repart vers l'avant et enfin, dans une troisième phase, elle se détend complètement et libère ainsi l'énergie qu'elle a emmagasinée en poussant la charge vers l'avant ; la bourre étant elle-même propulsée évidemment par l'expansion de la charge propulsive. De plus, lors du lancement du projectile ou autre produit, la pression des gaz comprimant la bourre soit directement, soit par l'intermédiaire d'un obturateur ou d'un carton, permet d'éviter des fuites de gaz le long du projectile, fuites altérant toujours la précision. La bourre assure donc de multiples étanchéités. Suivant une caractéristique intéressante de l'invention, la bourre est formée dans une mousse ayant des pores pratiquement fermés ou totalement fermés. Cela permet d'obtenir des caractéristiques élasti- ques très satisfaisantes car la compression de la bourre correspond à une compression des volumes de gaz accumulé dans les pores fermés. Dessins La présente invention sera décrite ci-après de manière plus détaillée à l'aide d'un exemple de munition selon l'invention représenté dans les dessins annexés dans lesquels :- plastic foam fillers without elasticity. There are also more traditional horsehair fillers. In the case of flocks formed of fibers, by the very fact of the production of these flocks, the fibers are cut which allow more or less moisture to pass to the powder, which deteriorates the performance of the cartridge. OBJECT OF THE INVENTION The object of the present invention is to develop cartridges and more generally means for propelling or launching projectiles and similar products having predictable constant performance, whatever the conditions of storage of the cartridges (humidity, duration, temperature). Description and advantages of the invention To this end, the invention relates to a cartridge of the type defined above, characterized in that the fill is a washer of synthetic rubber formed by a slice cut from an extruded bead of foam rubber having a skin . As the characteristics of the wad depend, in addition to its thickness, on the characteristics specific to the bead of extruded synthetic foam, defined in a particularly precise manner according to the manufacturing conditions, this makes it possible to obtain wads having ca- perfectly constant characteristics, insensitive to storage conditions such as humidity and temperature or humidity and temperature variations. Depending on the manufacturing characteristics chosen for the synthetic foam rubber cord, there will be more or less hard or flexible wads which corresponds to a very wide range of possible and predictable characteristics. The hardness of the wad according to the invention affects the more or less significant recoil of the weapon. Thanks to the extrusion of the synthetic foam rubber cord from which is cut a wad of height (thickness of the slice) more or less significant, this wad has a waterproof skin or crust which does not allow moisture to pass when the wad is compressed in the sleeve. Due to the synthetic rubber foam, this wad offers substantially constant physical and mechanical characteristics between very low temperatures of the order of - 30 to - 40 ° C up to very high temperatures of the order from + 100 to + 120 ° C. This flock is of particularly advantageous suppleness which makes it possible to ensure an excellent seal against the powder (humidity or drying) when it is compressed in the sleeve. It follows that the powder retains, during storage of the ammunition a constant humidity level identical to that desired during loading, giving it, during its use, constant ballistic qualities. Mechanically, at the start of the shot, the wad allows to propel the projectile (s) smoothly. In a first phase at the start of the blow, there is total crushing of the flock then, in a second phase, the fluff relaxes and starts again forwards and finally, in a third phase, it relaxes completely and thus releases the energy it has stored by pushing the charge forward; the flock itself being obviously propelled by the expansion of the propellant charge. In addition, during the launching of the projectile or other product, the pressure of the gases compressing the flock either directly, or via a shutter or a cardboard, makes it possible to avoid gas leaks along the projectile, leaks always affecting accuracy. The fill therefore provides multiple seals. According to an advantageous characteristic of the invention, the flock is formed in a foam having practically closed or completely closed pores. This allows elastic characteristics to be obtained. ques very satisfactory because the compression of the fluff corresponds to a compression of the volumes of gas accumulated in the closed pores. Drawings The present invention will be described below in more detail with the aid of an example of ammunition according to the invention represented in the attached drawings in which:
- la figure 1 est une vue en coupe axiale schématique d'une cartouche selon l'invention,FIG. 1 is a schematic axial section view of a cartridge according to the invention,
- la figure 2 est une vue en coupe d'un autre mode de réalisation d'un obturateur,FIG. 2 is a sectional view of another embodiment of a shutter,
- la figure 3 est une vue en coupe d'une autre variante d'obturateur,FIG. 3 is a sectional view of another variant of a shutter,
- la figure 4 est une vue schématique d'un cordon de mousse extrudée, avec sa peau et son cœur, montrant une tranche découpée constituant la bourre. Description d'un mode de réalisation Selon la figure, l'invention concerne une cartouche composée d'une douille 1, par exemple en matière plastique, cylindrique, portée par un culot 2 muni d'une amorce 3. La douille 1 et le culot 3 reçoivent, en partant de la cavité 21 du culot 2 dans laquelle débouche l'amorce, une charge de poudre 4 choisie en fonction des caractéristiques de tir que doit offrir cette cartouche. Au-dessus de cette, charge de poudre 4, se trouve un obturateur 5, notamment en matière plastique moulée. Cet obturateur 5 en forme de disque, ferme le haut du volume occupé par la poudre 4 pour constituer une sorte de piston. Au-dessus de l'obturateur 5, se trouve une bourre 6. Cette bourre 6 est constituée par une rondelle de caoutchouc mousse synthétique. Cette rondelle est en fait une tranche d'un cordon de caoutchouc mousse synthétique découpé à la hauteur H requise en fonction des caractéristiques que l'on veut donner à la munition. La bourre 6 est ensuite suivie par le ou les projectiles 7. Ces projectiles peuvent être constitués par un remplissage de plombs durcis ou d'un projectile sous calibré 71 avec son conteneur 72. L'ensemble est fermé sur le dessus soit par un sertissage en rosace soit par un sertissage 8 simplement rabattu pour retenir le projectile si celui-ci est unique. L'obturateur 5 peut avoir différentes formes : celle d'un dis- que plat avec lèvre ou sans lèvre périphérique comme la lèvre 51 représentée et qui entoure la face inférieure de l'obturateur. L'obturateur 5 peut également comporter une lèvre périphérique sur le dessus (lèvre non représentée) avec ou sans la lèvre inférieure. Enfin pour stabiliser le positionnement de la bourre 6 et de l'obturateur 5 il peut être prévu une broche 52 par exemple centrale, solidaire de l'obturateur 5 puisque celui-ci est en une matière rigide ou plantée dans l'obturateur. Cet organe de liaison ainsi formé par la broche 52 peut également être une pointe moulée avec les autres parties de l'obturateur. Suivant une variante représentée à la figure 2, l'obturateur 105 a un corps 150 de forme bombée dont la cavité 152 est située du côté de la charge de poudre. Ainsi, lors de l'explosion de la charge, la pression engendrée développe une composante dirigée vers le côté et améliorant l'étanchéité par récartement de lèvre périphérique 151 et, par suite, l'efficacité de la propulsion. Cette forme a également un second effet car, au début de l'explosion de la charge 4, l'obturateur 150 est pressé contre la bourre 6 et le projectile 7. Il se produit alors l'écrasement du corps 150 de l'obturateur qui entraîne également un écartement dans la direction transversale améliorant l'étanchéité. de plus, comme cet écrasement n'est pas total, le corps bombé 150 écrase la bourre 6 plus en son milieu que sur les côtés, c'est-à-dire refoule en quelque sorte la matière de la bourre 6 vers les côtés et favorise là encore la réalisation d'une bonne étanchéité au niveau de la bourre. La figure 3 montre une autre variante de réalisation de l'obturateur 205 dont le corps 250 est de forme conique, bordé par une lèvre périphérique 251 avec, éventuellement, une cavité 252 plus développée que celle simplement délimitée par la. lèvre périphérique 251. Cet ob- turateur 205 a un effet semblable de l'obturateur 105 de la figure 2. H y a, d'une part, l'écartement de la lèvre périphérique 251 et, d'autre part, l'enfoncement de l'obturateur dans la bourre 6 qui produit son écrasement et une plus grande étanchéité latérale de la bourre. Aux figures 2 et 3, la réaction de la bourre 6 et du projectile 7 au départ du coup est représentée par la flèche R. Selon la figure 4, la bourre 6 est une tranche d'un cordon de section circulaire extrudé de caoutchouc mousse synthétique. L'épaisseur H de la tranche est choisie en fonction des caractéristiques à donner au projectile. Le caoutchouc est, de préférence, à pores relative- ment fermés voire totalement fermés, de manière à constituer un coussin élastique entre l'obturateur 5 en matière plastique placé au-dessus de la charge de poudre 4 et les plombs ou le fond du conteneur et de son projectile 7, 71, 72. Du fait de sa fabrication par extrusion sous forme de cordon 60 et non pas de découpage dans une plaque de mousse, par une opération de poinçonnage, cette rondelle 6 présente extérieurement une peau 61, étanche, qui évite la pénétration d'humidité à travers la douille 1 ou le long des parois intérieures de la douille à partir de l'extrémité sertie jusqu'au niveau de la poudre. Le cœur 62 du cordon 60 entouré par la peau 61 est une mousse offrant les caractéristiques d'élasticité requises. La compression de la bourre 6 entre l'obturateur 5 en matière plastique et le ou les projectiles 7 applique fermement la bourre 6 contre les parois latérales de la douille et du canon et comme les pores sont pratiquement, voire totalement fermés, leur traversée par de l'air chargé d'humidité est pratiquement impossible à cause des pertes de charge très importante que l'échange gazeux rencontre au passage de la bourre ou au contournement de celle-ci. - Figure 4 is a schematic view of an extruded foam bead, with its skin and its heart, showing a cut slice constituting the wad. Description of an embodiment According to the figure, the invention relates to a cartridge composed of a socket 1, for example of plastic, cylindrical material, carried by a base 2 provided with a primer 3. The socket 1 and the base 3 receive, starting from the cavity 21 of the base 2 into which the primer opens, a charge of powder 4 chosen according to the firing characteristics that this cartridge must offer. Above this, powder charge 4, is a shutter 5, in particular of molded plastic. This disc-shaped shutter 5 closes the top of the volume occupied by the powder 4 to constitute a sort of piston. Above the shutter 5, there is a wad 6. This wad 6 is constituted by a washer of synthetic foam rubber. This washer is in fact a slice of a cord of synthetic foam rubber cut to the height H required according to the characteristics that one wants to give to the ammunition. The flock 6 is then followed by the projectile (s) 7. These projectiles may consist of a filling of hardened pellets or of a sub-calibrated projectile 71 with its container 72. The assembly is closed on top either by crimping in rosette or by a crimp 8 simply folded down to retain the projectile if it is unique. The shutter 5 can have different shapes: that of a flat disc with lip or without peripheral lip like the lip 51 shown and which surrounds the underside of the shutter. The shutter 5 may also include a peripheral lip on the top (lip not shown) with or without the lower lip. Finally, to stabilize the positioning of the flock 6 and of the shutter 5, a pin 52, for example a central pin, may be provided, integral with the shutter 5 since the latter is made of a rigid material or planted in the shutter. This connecting member thus formed by the pin 52 can also be a point molded with the other parts of the shutter. According to a variant shown in FIG. 2, the shutter 105 has a body 150 of convex shape, the cavity 152 of which is situated on the side of the powder charge. Thus, during the explosion of the charge, the pressure generated develops a component directed towards the side and improving the sealing by spacing of peripheral lip 151 and, consequently, the efficiency of the propulsion. This shape also has a second effect because, at the start of the explosion of the charge 4, the shutter 150 is pressed against the flock 6 and the projectile 7. There is then crushing of the body 150 of the shutter which also results in a spacing in the transverse direction improving sealing. moreover, as this crushing is not total, the convex body 150 crushes the flock 6 more in its middle than on the sides, that is to say somehow pushes the material of the flock 6 towards the sides and again promotes the achievement of a good seal at the flock. Figure 3 shows another alternative embodiment of the shutter 205 whose body 250 is conical, bordered by a peripheral lip 251 with, optionally, a cavity 252 more developed than that simply delimited by the. peripheral lip 251. This shutter 205 has a similar effect to the shutter 105 of FIG. 2. There is, on the one hand, the spacing of the peripheral lip 251 and, on the other hand, the depression the shutter in the flock 6 which produces its crushing and greater lateral tightness of the flock. In FIGS. 2 and 3, the reaction of the wad 6 and of the projectile 7 at the start of the shot is represented by the arrow R. According to FIG. 4, the wad 6 is a slice of a bead of circular section extruded from synthetic foam rubber . The thickness H of the wafer is chosen according to the characteristics to be given to the projectile. The rubber is preferably with relatively closed or even completely closed pores, so as to constitute an elastic cushion between the plastic shutter 5 placed above the powder charge 4 and the pellets or the bottom of the container. and its projectile 7, 71, 72. Due to its manufacture by extrusion in the form of a bead 60 and not of cutting from a foam plate, by a punching operation, this washer 6 has an exterior skin 61, which is waterproof, which prevents the penetration of moisture through the socket 1 or along the interior walls of the socket from the crimped end to the powder level. The heart 62 of the cord 60 surrounded by the skin 61 is a foam offering the required elasticity characteristics. The compression of the wad 6 between the plastic shutter 5 and the projectile (s) 7 firmly applies the wad 6 against the side walls of the casing and of the barrel and since the pores are practically, if not completely closed, their passage through the air charged with humidity is practically impossible because of the very large pressure drops that the gas exchange encounters when passing the flock or bypassing it.

Claims

R E V E N D I C A T I O N S 1°) Cartouche formée d'une douille avec un culot muni d'une amorce, la cartouche contenant une charge de poudre suivie d'un obturateur, d'une bourre et d'une charge à pousser (plombs / projectiles) caractérisée en ce que la bourre (6) est une rondelle de caoutchouc synthétique formée par une tranche découpée dans un cordon extrudé (60) de caoutchouc mousse ayant une peau (61).1 °) Cartridge formed of a cartridge case with a base provided with a primer, the cartridge containing a charge of powder followed by a shutter, a wad and a charge to push (pellets / projectiles) characterized in that the fill (6) is a washer of synthetic rubber formed by a slice cut from an extruded bead (60) of foam rubber having a skin (61).
2°) Cartouche selon la revendication 1, caractérisée en ce que la mousse à des pores fermés.2 °) cartridge according to claim 1, characterized in that the foam has closed pores.
3°) Cartouche selon la revendication 1, caractérisée en ce que la mousse présente des caractéristiques mécaniques sensiblement constantes entre - 40°C et + 120°C.3 °) cartridge according to claim 1, characterized in that the foam has substantially constant mechanical characteristics between - 40 ° C and + 120 ° C.
4°) Cartouche selon la revendication 1, caractérisée en ce que la charge de poudre (4) est séparée de la bourre (6) par un obturateur (5).4 °) cartridge according to claim 1, characterized in that the powder charge (4) is separated from the flock (6) by a shutter (5).
5°) Cartouche selon la revendication 4, caractérisée en ce que l'obturateur (5) comporte au moins une lèvre périphérique (51).5 °) cartridge according to claim 4, characterized in that the shutter (5) comprises at least one peripheral lip (51).
6°) Cartouche selon la revendication 4, caractérisée en ce que l'obturateur comporte un organe de liaison notamment en forme de bro- che (52) pour fixer la position relative de la bourre (6) et de l'obturateur (5).6 °) Cartridge according to claim 4, characterized in that the shutter comprises a connecting member in particular in the form of a pin (52) for fixing the relative position of the flock (6) and the shutter (5) .
7°) Cartouche selon la revendication 4, caractérisée en ce que l'obturateur (5) est de forme bombée dont la concavité est située du côté de la charge de poudre. 7 °) Cartridge according to claim 4, characterized in that the shutter (5) is domed whose concavity is located on the side of the powder charge.
PCT/FR2004/050752 2003-12-23 2004-12-23 Cartridge WO2005064266A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0315211A FR2864218B1 (en) 2003-12-23 2003-12-23 CARTRIDGE
FR0315211 2003-12-23

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WO2005064266A1 true WO2005064266A1 (en) 2005-07-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR633407A (en) * 1926-08-18 1928-01-28 Wad for shotgun cartridges
FR2132927A5 (en) * 1971-04-01 1972-11-24 Manuf Gle Munitions Plastic cartridge wads - cut to thickness from extruded constant diameter stock (of expanded polyethylene)
US4864934A (en) * 1988-12-12 1989-09-12 Olin Corporation Industrial shotshell having a load-stabilizing assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR633407A (en) * 1926-08-18 1928-01-28 Wad for shotgun cartridges
FR2132927A5 (en) * 1971-04-01 1972-11-24 Manuf Gle Munitions Plastic cartridge wads - cut to thickness from extruded constant diameter stock (of expanded polyethylene)
US4864934A (en) * 1988-12-12 1989-09-12 Olin Corporation Industrial shotshell having a load-stabilizing assembly

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FR2864218A1 (en) 2005-06-24
FR2864218B1 (en) 2006-09-29

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