Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
  • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
  • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
  • F42B10/02—Stabilising arrangements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
  • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
  • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
  • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
  • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
  • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile
  • F42B12/625—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile a single submissile arranged in a carrier missile for being launched or accelerated coaxially; Coaxial tandem arrangement of missiles which are active in the target one after the other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
  • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
  • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base
• • 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
  • F42B7/10—Ball or slug shotgun cartridges

Definitions

• the present invention relates to ammunition for small, medium or large caliber weapons, and more particularly to a new telescoped arrow bullet, of the type comprising an associated sub-projectile. to a launcher, powered by a propulsion system.
• Arrow type ammunition is known in the sports and military fields, and for example, patent FR-A-2,335,818 describes a hunting ammunition comprising a sub-calibrated projectile stabilized by empennage, associated with a hoof launcher.
• the latter is made of a material capable of fragmenting at the outlet of the barrel of the weapon, and the dispersion of the fragments then represents a risk for the safety of the user.
• the principle of the "pushed" launch used in this patent leads to a very short sub-projectile, whose L / D ratio (length of the sub-projectile / diameter of the body of the sub-projectile) cannot exceed 2.5 , thus leading to an energy balance with limited impact.
• Patent FR-A-2,627,854 relates to a hunting ammunition comprising a projectile constituted by an internal element, the front and the side walls of which are covered by an external element in the form of a sleeve.
• the metallic internal element comprises a neutralizing head, integral with a rear rod on which a hammer mass can slide to increase the neutralizing effect of the projectile upon impact.
• the external element remains fixed to the internal element over the entire trajectory of the projectile; it cannot be compared to a launcher like the one used in arrow balls and cannot provide the same advantages.
• the launching principle of this projectile is also of the "pushed" type, and the L / D ratio cannot exceed approximately 3, also leading to low energy on impact on the target.
• Patent FR-A-2,555,728 describes a munition of the arrow type, that is to say comprising a sub-projectile stabilized by empennage, associated with a detachable launcher of the "towed-pushed" type which has the effect of guiding and sealing during the journey in the barrel of the weapon.
• the sub-projectile has a tapered shape, and is made of a material of high density, giving it a high surface energy during impact.
• This characteristic however has the drawback of often only causing slight injuries to game, the sub-projectile being able to pass through the soft flesh of game without encountering any hard part.
• the projectile can be fired at a great distance if the target is anked, because of its good trajectory stability, and it can then constitute a danger for people in the vicinity.
• the patent FR-A-2,602,042 describes a munition also comprising a projectile of arrow type, the launching of which is of the "pushed" type.
• the sub-projectile associated with a launcher is stabilized by a fin fin sliding mounted on the body of the sub-projectile, thus providing an increase in elongation, and the L / D ratio is of the order of 3.5.
• the energy balance of this type of ammunition is still insufficient, and the accuracy of firing at usual distances is not always satisfactory, as indeed for all ammunition using a launch type "push".
• the present invention relates to a munition of the arrow type, comprising a sub-projectile (arrow) associated with a launcher with the caliber of the weapon.
• the set constitutes by the sub-projectile (or arrow) and the launcher is at least partially included in a cartridge further comprising a primed cartridge and a propellant charge.
• This ammunition has characteristics enabling it to avoid the drawbacks of the aforementioned known projectiles, and it can be used in particular in small, medium or large caliber hunting weapons, striped or not, as well as in military training weapons.
• the ammunition for small, medium or large caliber weapons is of the type comprising a sub-projectile comprising a fin, associated with a launcher of the caliber of the weapon, the assembly being at least partially included in a cartridge further comprising a primed socket and a propellant charge, and is distinguished in that the launcher is non-detachable and is mounted to slide longitudinally on the sub-projectile.
• the muni ⁇ tion of the invention comprises a tail and / or a thrust plate, the latter being able to be integrated into the tail.
• the push plate can serve as a tail.
• the thrust plate is integral with the body of the sub-projectile, and is preferably located slightly in front of the rear end of the sub-projectile. It is intended to ensure the mechanical strength of the launcher during the propulsion phase of the bullet as well as sealing against propellant gases between the complete bullet and the barrel of the weapon.
• This seal can be improved by a seal placed on the external face of the push plate.
• this seal is constituted by a flexible lip at the periphery of the push plate, behind the latter.
• the seal can be further reinforced, for example, by an annular or O-ring placed on the external face of the thrust plate.
• the push plate also makes it easier to guide the complete bale during the launch phase.
• the slightly conical shape of the tail, or of the flexible sealing lip facilitates the encaronnage operations.
• the tail unit comprises only the thrust plate completed by a seal.
• the push plate can be made of plastic, and can advantageously integrate the tail, the two elements, push plate and tail, then forming only one piece.
• the munition comprises a launcher constituted by a part of revolution comprising two concentric bores, and preferably the diameter of the front bore is greater than that of the rear bore. More particularly, the launcher is constituted by a sleeve which can slide longitudinally on the body of the sub-projectile, between a retracted position and an advanced position, and in this latter position, the total length of the complete bullet is substantially advanced.
• the length of the complete bale, in the deployed position can be approximately 50 to 60% greater than the length of the complete bale in the folded position.
• the launcher can slide over a distance between 1/4 and 3/4 of the length of the sub-projectile.
• the mass of the launcher is greater than that of the sub-projectile, the mass ratio of the launcher to the sub-projectile being between 2: 1 and 8: 1, and preferably between 2.5: 1 and 6: 1.
• the launcher of the ammunition of the invention constitutes an energy launcher providing the complete bullet formed by the launcher and the sub-projectile (or arrow), improved efficiency as indicated below.
• the effectiveness of the bullet on the target can be further improved by providing a fragile launcher under impact shock, for example by using a material of appropriate resistance or by forming incipient fractures in the thickness of the target. launcher sleeve.
• the energy launcher can be made of a material with a relatively high density, for example lead or a metallic alloy, or a mixed organic metallic alloy.
• the sub-projectile is made of a material with high hardness, for example brass.
• the launcher may include an outer casing made of a material of greater hardness, for example brass or a hard plastic alloy.
• This embodiment makes it possible not to overwhelm the barrel of the weapon during the launching phase and to manage more precisely the terminal effect on target that it is desired to obtain.
• the production of the launcher in two parts for example a rear and internal part in the form of a sliding ring on the sub-projectile, made of a material with high hardness, such as brass, and a front and external part made of lead or alloy lead, is particularly suitable for firing bullets at very high acceleration during the launch phase, ensuring excellent mechanical strength of the front part of the launcher.
• the front part of the launcher has a shape adapted according to the desired effect. It can be masked by a ballistic cap which makes it possible to reduce the aerodynamic drag of the ball in flight, and to control the partial bursting of the launcher upon impact on the target.
• the tail element is slidably mounted longitudinally on the rear part of the body of the sub-projectile.
• the tail Before firing, and during the launch phase, the tail is in the advanced position, against the rear end of the launcher. As soon as it leaves the barrel, it is brought back into the retracted position, against a stop provided at the rear end of the sub-projectile, by sliding friction, thanks to the difference in aerodynamic drag.
• the tail, as well as the thrust plate can be made of a plastic alloy having sufficient mechanical strength and a low density.
• the sliding launcher is produced in two concentric tubular parts, the internal part remaining solid with the sub-projectile, from the launching phase until impact on the target, while that the outer part can separate.
• the outer part of the launcher is advantageously made of at least two detachable parts, symmetrical with respect to the longitudinal axis of the launcher, which comes off at the outlet from the muzzle of the barrel.
• annular nozzles passing through the thickness of the internal part of the launcher, in its advanced part projecting beyond the head of the arrow when the ball complete and in deployed position.
• These nozzles have in particular the effect of channeling the air from the interior of the main nozzle formed in the axis of the launcher to the outside, and of facilitating the separation of the elements constituting the separable external launcher.
• This embodiment comprising a two-part launcher is particularly useful in the case of the use of the ammunition according to the present invention in large caliber weapons, in order to keep the bullet a relatively small, smaller outside diameter. the caliber of the weapon.
• the ammunition in accordance with the present invention has the advantage of being able to be used in weapons of all calibers, with smooth tube choké or not, or with striped tube, both in the field of hunting weapons and in that of weapons of ⁇ military training.
• the ammunition according to the present invention applied to hunting, has many advantages compared to known ammunition, and more particularly: the launcher not being detachable, no ejection of susceptible element occurs.
• the launcher or the sealing system allows the total energy of the projectile to be used and thus increases the stopping power of the game; it provides, at equal firing pressure, an optimal initial speed thanks to a minimum occupation of the volume allocated to the powder by the stabilization system of the projectile; it makes it possible to obtain very high stability of the projectile on trajectory by increasing the stability margin thanks to the telescopic boom / energetic launcher assembly; it provides excellent shooting accuracy, especially at long distances;
• the ammunition according to the invention has improved efficiency and excellent neutralizing power because the launcher can fragment in a controlled manner in the soft parts of the game while the sub-projectile (arrow) in hard material generating energy very high surface area can strike the hard parts of the skeleton of the game, without damaging the venison thanks to an excellent stability of the arrow during the attack.
• Figure 1 a schematic section of a complete cartridge comprising a complete bullet according to the invention, constituted by an arrow and an energy launcher, as well as a primed cartridge and a propellant charge.
• Figure 2 a longitudinal section of the complete bale of Figure 1, in the deployed position.
• Figure 3 a schematic section of a variant of the front part of the launcher in Figure 1.
• Figure 4 a schematic section of another variant of the front part of the launcher.
• Figure 5 a schematic section of a sub-projectile comprising a finned fin.
• Figure 6 a front view of the tailplane of Figure 5.
• Figure 7 a schematic longitudinal section of an alternative embodiment with sliding fin.
• Figure 8 a schematic section of an alternative form of ammunition according to the invention, adapted to a weapon with a rifled tube.
• Figure 9 a schematic section of a complete bullet of the invention comprising a launcher with two concentric parts adapted to a weapon of large caliber.
• Figures 10-11 a variant of the ball in Figure 9.
• the cartridge (C) comprises the complete bullet (1) as well as the primed socket (D) containing the propellant charge (P), constituted in this case by a powder of conventional type.
• the complete bullet (1) comprises two elements: the arrow (2) and the energy launcher (10) which can slide on the body of the arrow (2). When the ball is partial- Inserted into the cartridge, before use, the launcher (10) is in the retracted position, as shown in Figure 1.
• the arrow (2) comprises: a) the arrow body (3) of hard material, comprising at the front a conical head (4) and at the rear of the circular grooves (5 ); b) the tail (6), preferably made of plastic, itself comprising the push plate (7) integrating the seal formed by the lip (8), and the tail body (9 ).
• the energy launcher (10) is a lead alloy revolution part comprising two concentric bores of different diameters, the diameter of the front bore (11) being greater than that of the rear bore (12).
• the shape of the conical head (4) of the body (3) of the arrow (2) is designed to allow good attachment of the arrow (2) on the target, and penetrate into the material with a very important neutralizing power.
• the outside diameter of the conical head (4) is greater than that of the central part (13) of the boom body (3).
• This central part (13) is cylindrical in shape, the rear part of the boom body (3) comprises circular grooves (5) cooperating with teeth (14) formed in the tail body (9).
• the thrust plate (7) integrating the seal (8) with a deformable lip and the body (9), ensures the mechanical strength of the energy launcher (10) at the face (15) the thrust plate (7) and the face (16) of the energy launcher (10) during the propulsion phase of the complete bale (1), the gas-tightness between the complete bale (1) and the tube of the weapon thanks to the deformable lip seal (8), as well as the guidance of the complete bullet (1) during the launching phase.
• the outside diameter (a) of the seal (8) is a few tenths of a millimeter greater than the diameter of the barrel.
• the seal is further reinforced during the launch phase by the pressure (p) exerted by the propellant gases on the internal face (17) of the gasket (8).
• the tail body (9) has at its rear part a conical shape (18) facilitating the penetration of the complete bullet (1) into the propellant powder (P) during the cartridge filling.
• Adents (14) formed in the tail body (9) cooperate with the grooves (5) formed in the boom body (3) to secure the assembly constituted by the boom body (3) and the tail (6).
• the stabilizer (6) plays an important role on the trajectory, ensuring the stability of the complete ball (1) up to the target.
• the aerodynamic components exerted on this pin are very important during the flight of the complete ball (1).
• the mechanical strength of the tail (6) during this flight phase is ensured by the combination of the grooves (5) of the boom body (3) with the teeth (14) of the tail body (9).
• the outer part of the energy launcher (10) has a cylindrical part (19) whose diameter (b) is very slightly smaller than that of the weapon, and an ogive part (20) whose shape is linked to the flight characteristics as well than to the effects sought during the penetration of the complete bullet (1) into the target.
• the cylindrical part (19) has in its rear part a groove (21) allowing the crimping of the collar of the sleeve after cartridge sealing.
• the inner part of the energy launcher (10) consists of two cylindrical and concentric bores.
• the diameter of the rear bore (12) is less than the diameter of the front bore (11).
• the connection between the two bores has a shoulder (22) making it possible to lock the energy launcher (10) in translation with the conical head (4) of the jib body (3) before translation.
• the front bore (11), of diameter greater than that of the rear bore (12), has on its front part an internal chamfer (23) whose dimensions are linked to the characteristics of the terminal effect sought for the complete bale (1).
• Annular clearances of a few tenths of a millimeter are provided between the rear bore (12) of the energy launcher (10) and the central part (13) of the arrow body (3), as well as between the front bore (11) and the head (4) of the boom body (3).
• the distance 1 is equal to 0, the rear face (16) of the energy launcher (10) being in contact with the face (15) of the thrust plate (7).
• the operation of the ball shown in Figure 2 is as follows. At the start of the blow, and during the pressure build-up, the bushing of the bushing is carried out by means of the groove (21) of the energy launcher (10). During the propulsion phase of the complete bullet, the energy launcher (10), while ensuring the guidance of the bullet in the barrel of the weapon, is in contact with the thrust plate (7) of the grip (6) via the face (15) of the thrust plate (7) and the face (16) of the launcher (10). Total sealing against propellant gases is ensured by the lip seal (8), integrated in the thrust plate (7). The complete bale (1) is thus in its folded position.
• the energy launcher (10) free in translation, slides forward on the body of the arrow (13) of the arrow (2), to come up against the conical head (4 ) of the arrow (2).
• This displacement is represented by the length 1 in FIG. 2.
• This sliding movement is obtained thanks to the difference in aerodynamic drag on the arrow (2) and on the energy launcher (10), the aerodynamic drag of the launcher (10) being weaker than that of the arrow (2).
• the complete ball (1) is then in the deployed position and the arrow (2) is guided by the energy launcher (10) over the entire trajectory, up to the target.
• the deployed position of the full ball on trajectory provides exceptional ball stability by increasing the stability margin defined by the distance between the center of the aerodynamic forces and the center of gravity of the deployed full ball.
• the aggression mechanism on the target takes place in two phases, as shown below.
• the energy launcher (10) In a 1st phase, the energy launcher (10) first strikes the target by its front face with the total energy of the complete ball (1). At this precise moment three phenomena appear chrono ⁇ logically: a - a first neutralizing effect appears thanks to the high surface kinetic energy (1/2 mV 2 : annular frontal section of the energy launcher (10)) thus making it possible to generate a wave of significant shock with dilation. b - a second neutralizing effect is obtained by the gradual fragmentation of the energy launcher (10). c - release of the arrow (2). During the aggression phase of the target by the energy launcher (10), the latter tends to slide towards the rear of the arrow body (13) of the arrow (2), thus releasing the arrow (2 ) with all the power of the full bullet
• the arrow (2) In a second phase, the arrow (2), the release of which has absorbed practically no energy, thus strikes the target with its total energy.
• the target having become less hard due to the work produced by the energy launcher (10) during the 1st phase, the arrow (2) can easily enter the target with its total energy.
• the power of the arrow makes it possible to break the hard parts of the target thanks mainly to the very high surface kinetic energy of the arrow (2) (1/2 mV 2 / maximum frontal section of the arrow body) and to the neutralizing power of the conical head (4) of the arrow (2).
• the arrow (2) being very stable during reaching, the surface kinetic energy delivered by said arrow in the target remains homogeneous and very high.
• the excellent stability of the boom (2) during reaching allows do not damage the venison of the game, in the case of the hunting ball. It also limits the propensity for ricochets, for example on tree trunks.
• FIG. 3 shows an embodiment of an energy launcher (24) according to the invention, comprising a front part (25) of lead or alloy, and a rear part (26) in the form of a shouldered ring comprising teeth (27) cooperating with the grooves (28) provided in the front part (25).
• FIG. 4 Another variant of an energy launcher is shown in FIG. 4 where the launcher (29) also consists of two parts: a front part (30) made of an alloy, and a rear part (31) protecting the external part (32) and the rear (33) of the front part (30).
• This rear part (30) has a groove (34) for crimping the collar of the sleeve.
• This embodiment makes it possible not to fill the barrel of the weapon during the launching phase, and to facilitate the control of the desired terminal effect on the target.
• the rear part can cover most of the warhead of the front part.
• Figure 5 shows a tail (35) consisting of four fins (36), a thrust plate (37), carrying an O-ring (38) fitting into a circular groove (39), and a body stabilizer (40) made of plastic.
• the tail (35) is integral with the boom body (41) by means of circular grooves (42) cooperating with teeth (43).
• the four fins (36) appear more clearly in Figure 6.
• This embodiment is particularly useful for increasing the bearing capacity of the complete ball on its trajectory, as well as for lengthening the guide length of the ball during the propulsion phase.
• the tail (35) can be limited to the thrust plate (37) completed on its periphery by the O-ring (38).
• This variant makes it possible to reduce the volume occupied by the tail in the propellant powder, when the complete bullet is in place in the cartridge case.
• FIG. 7 shows a complete bale according to the invention, in the folded position.
• This complete ball is constituted by an energy launcher (44) provided with a ballistic cap (45), an arrow (46), as well as a tail (47) free in translation on the arrow (46).
• the ballistic cap (45) makes it possible to reduce the aerodynamic drag of the ball in flight and to better control the bursting of the energy launcher (44) upon impact on the target.
• the arrow (46) has a conical head at its two front and rear ends.
• the launcher (44), with its cap (45), and the tail (47) are shown in solid lines in the folded position, and in dotted lines in the deployed position.
• the tail (47) In the folded position, the tail (47) is separated from the rear conical head by the distance (n) while the launcher (44) can slide on the body of the boom (46) over a distance (m).
• the complete ball At the start of the trajectory, and by aerodynamic drag difference, the complete ball is deployed over a length equal to m + n, the tail (47) coming to bear on the rear conical head, and the energy launcher (44) coming in stop against the conical head before the boom (46).
• the energy launcher (50) consists of its front part (51) of alloy and of its rear part (52) of hard metallic alloy such as brass.
• the rear part (52) has a shoulder (53) and a groove (54) in which a ring (55) of plastic material cooperates with an annular clearance j of between 0.1 mm and a few tenths of a millimeter.
• the ring (55) is free to rotate but locked in translation, and it comprises a crimping groove (56) fitted in its rear part by the collar (57) of the sleeve (58). It has an outside diameter f located at the front of the groove (56) greater by 0.1 mm to about 0.3 mm than the diameter g of the bottom of the stripes of the barrel (T) of the weapon.
• the outside diameters k of the tail (49) and ⁇ of the energy launcher (50) are slightly smaller than the inside diameter r of the barrel, the difference being less than 0.1 mm.
• the operating principle of this device is as follows.
• the ring (55) thus takes up the scoring of the barrel of the weapon and then rotates at the speed of rotation allowed by this scoring. At the same time, it ensures good sealing of the complete bullet (48) with propellant gases. In its movement, it drives the complete ball (48) in slight rotation, only by friction. At the exit of the tube, the ring (55) breaks under the effect of centrifugal force, and, simultaneously, the complete ball (48) begins its deployment movement.
• the energy launcher comprises a central front nozzle communicating with annular nozzles channeling the flow of air, according to an embodiment described in French patent application 94.10922.
• the complete bullet shown in Figure 9 is adapted to be fired in a relatively large caliber weapon, and comprises an energy launcher in two elements: an internal element and an external element.
• the internal energy launcher (59) is similar to that of the previous example, and can slide along the body (60) of the arrow (61). It comprises a central nozzle (62) open towards the front, communicating with four annular nozzles (63) passing through the wall of the internal energy launcher.
• the cylindrical outer part comprises a series of circular grooves (64) cooperating with the teeth (65) of the external launcher (66).
• This external launcher (66) consists of two elements with contiguous planes cooperating with the circular grooves (64) of the internal energy launcher (59).
• the external launcher (66), made of technical plastic, comprises circular grooves (67) for decompression on its periphery, and an internal cone (68) on its front part.
• the diameter (s) of the front of the tail (69) of the arrow (61) is equal to the caliber of the weapon.
• the complete projectile (70) is constituted by the arrow (61) with its tail (69), the internal energy launcher (59) as well as the external launcher (66).
• the complete projectile (70) is in the position shown in FIG. 9, then, as soon as it leaves the barrel, the elements of the external launcher (66) detach from the internal launcher (59) under the action of aerodynamic forces exerted on the cone (68) and through the annular nozzles (63) communicating with the central nozzle (62). At the same time, the internal energy launcher (59) slides forward on the body (60) of the arrow (61), and abuts against the conical head of the arrow. The elements of the external launcher (66) which have fallen off fall at an average distance of 30 m, with a maximum deviation of 7 m from the firing plane.
• the internal energy launcher (59) is of the caliber of the weapon, and the external launcher (66) is then eliminated.
• the other elements remain unchanged.
• Example 3 Figure 10 shows another ball according to the present invention, in the folded position, as it is in a cartridge and during the launching phase.
• the complete ball (71) comprises an arrow, a tail, and an energy launcher constituted by an internal element and an external element, as in the previous example.
• the internal energy launcher (72) comprises a front element (73) and a rear element (74).
• the diameter of the front element (73) of the launcher is greater than the diameter of the rear element (74), but less than the caliber of the weapon.
• the two elements (73) and (74) are connected by vanes (75), delimiting annular nozzles according to the technique described in French patent application 94.10922.
• the external launcher (76) substantially of the caliber of the weapon, is made of technical plastic and consists of two elements symmetrical with respect to the axis of the bullet, mounted in contiguous planes, as in the example above tooth.
• the external element (76) and the internal energetic element (72) cooperate by means of teeth and grooves, as in the previous examples. Decompression grooves are formed on the external face of the external launcher (76).
• the tail (77) is also made of plastic material, and its outside diameter is much smaller than the caliber of the weapon. It is completed by an " annular " seal (78) with two flexible lips which ensures sealing total of the complete bullet (71) with propellant gases during the launch phase.
• the two elements of the external launcher (76) detach from the internal energy launcher (72), and the latter slides on the arrow body (79) to abut against the conical head of the arrow (80). Simultaneously, the seal (78) is detached from the tail (77).
• Example 4 This example describes an embodiment analogous to that of Example 3, but in which the front element of the launcher and the tail are of the caliber of the weapon.
• the stabilizer (81), of the caliber of the weapon ensures the tightness of the complete bullet (82) during the launching phase thanks to its flexible lip (83).
• the outside diameter of the front element (84) of the energy launcher (85) is very slightly less than the caliber of the weapon.
• the external launcher (86), made of technical plastic, comprises two elements with contiguous planes symmetrical with respect to the longitudinal axis of the ball. When the ball is in the folded position, as shown in Figure 11, the external launcher (86) is blocked between the tail (81) and the rear edge of the front element (84) of the energy launcher (85).
• the components of the external launcher (86) detach from the energy launcher (85), and the latter slides on the arrow body (87).
• the mass of the energy launcher can be approximately 20 g, while the mass of the arrow is 5 g and that of the external plastic launcher is approximately 2 g.
• the total length of the complete bale is approximately 42 mm in the folded position and 60 mm in the deployed position.
• Such an embodiment makes it possible to obtain, under normal conditions of use, a kinetic energy of the bullet, measured at the outlet of the barrel of the weapon, of approximately 3,445 J, and a surface kinetic energy at impact on the target of approximately 35 J / mm 2 .
• the external launcher is configured to:
• (86) can be made integral with the tail (81), thus constituting a launcher-pusher made of plastic alloy, attached to the boom and remaining integral with the latter throughout the trajectory.

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• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
• Medicines Containing Material From Animals Or Micro-Organisms (AREA)
• Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
• Glass Compositions (AREA)
• Artificial Fish Reefs (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)

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• 1994
  • 1994-10-26 FR FR9412835A patent/FR2726357B1/fr not_active Expired - Lifetime
• 1995
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  • 1995-10-26 AU AU38479/95A patent/AU685010B2/en not_active Ceased
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  • 1995-10-26 WO PCT/FR1995/001418 patent/WO1996013697A1/fr active IP Right Grant
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• 1996
  • 1996-06-25 NO NO962681A patent/NO307531B1/no not_active IP Right Cessation
  • 1996-06-25 FI FI962616A patent/FI115797B/fi active IP Right Grant
• 1999
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