Classifications

• • 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
  • F42B12/46—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 gases, vapours, powders or chemically-reactive substances

Definitions

• the invention relates to the technical sector of ammunition of large caliber firearms designed for the firing of shaped projectiles to avoid penetration on impact on an individual in particular, thus constituting non-lethal ammunition.
• all of the ammunition has arrangements and means capable of ensuring the propulsion of a projectile generally constituted by a cylindrical body delimiting an internal chamber capable of receiving products to be dispersed, such as CS powder, shot, liquids ....
• the projectile has pyrotechnic systems to ensure the dispersion of the products.
• a detonator subject to a retarder
• the pyrotechnic system is disposed in coaxial alignment with for example a propellant cartridge to be turned on by said gas cartridge.
• the dispersing products are arranged inside the body of the projectile, the end opposite to that receiving the pyrotechnic detonator / retarder system is closed by a cover.
• the object of the invention is to remedy these drawbacks in a simple, safe, efficient and rational manner.
• the problem which the invention proposes to solve is to produce a projectile for any type of ammunition of large caliber firearms of the non-lethal type eliminating any use of a pyrotechnic system for dispersing the products containing said projectile, all with the aim of obtaining great accuracy in shooting over much longer distances, of around thirty meters.
• a projectile consisting of a cylindrical body delimiting an internal chamber capable of receiving products to be dispersed.
• the free end of the projectile body has a part delimiting an internal volume containing a gaseous fluid, in particular air, said part being capable of being elastically deformed under the effect of an impact to create, under the effect of compression of the fluid, a force capable of ensuring the dispersion of the products by arrangements which the body presents.
• the part delimiting the internal volume is constituted by a hollow warhead made of flexible material, in particular rubbery.
• the internal chamber receiving the products to be dispersed is constituted by a nozzle disposed coaxially with the warhead; - The nozzle opens into a part of the body of rigid material opposite coaxially to the warhead and acting as a reservoir, said part having the arrangements for dispersing the products;
• the arrangements for dispersing the products consist of through orifices arranged annularly on the periphery of the tank.
• Another problem which the invention proposes to solve is to ensure the retention of the set of dispersing agents inside the projectile and before the impact of the latter.
• Such a problem is solved in that the bottom of the nozzle and the orifices are closed in a sealed manner by means which retract under the pressure exerted by the products and the compressed fluid.
• the tank bottom has an externally coaxial profile acting as a tail unit to ensure the stability of all of said projectile at the time of the shot.
• FIG. 1 is a longitudinal sectional view of the projectile
• FIG. 2 is a cross-sectional view along line 2-2 of Figure 1;
• FIG. 3 is a cross-sectional view along line 3-3 of Figure 1;
• - Figure 4 is a longitudinal sectional view showing the introduction of the projectile into a munition;
• FIG. 5 is a longitudinal sectional view showing the impact of the projectile and the concomitant dispersion of the products.
• the projectile comprises a generally cylindrical body designated by its assembly by (1).
• the free end of the body (1) has a hollow warhead (2) made of flexible material, in particular rubbery.
• the internal volume (2a) of the warhead (2) contains a gaseous fluid. More particularly, this volume (2a) naturally contains air.
• the warhead (2) is coupled, in a removable manner, at the end of a part (la) of the body which acts as a reservoir.
• This part (la) is made of rigid material, for example plastic.
• the reservoir (la) delimits coaxially with the warhead (2), a nozzle (lb) receiving the dispersants (P).
• This nozzle (lb) constitutes with the reservoir (la) a one-piece assembly or else is independent of the reservoir (la) by being attached to it in a reported manner.
• the nozzle (lb) therefore appears inside the tank (la) by delimiting a tapering tapered section in the direction of the bottom (lai) of said tank.
• the warhead (2) can be coupled between the free and open end of the tank (la) and a flange (lbl) that has the nozzle (lb).
• the reservoir (la) has through orifices (le) arranged annularly on the periphery of said reservoir very substantially at the level of the connection region of the warhead (2).
• the tank bottom (lai) is rounded and is connected to the cylindrical part (la2) of the tank by a very substantially frustoconical shape (la3).
• the products (P) are kept inside the tank, in particular at the nozzle (lb) by any sealed means capable of being retracted under the pressure exerted by said product and the compressed air at the time of impact as will be indicated in the following description.
• each of the ends (lbl) and (lb2) of the nozzle (lb), as well as the orifices (le) are closed off with a sticker (3).
• the bottom (lai) of the tank is extended externally by a coaxial profile (ld) whose free end constitutes a tail (ldl) to ensure the stability of the entire projectile at the time of firing.
• This empennage (ldl) can be constituted by a disc in flexible material or lined with a material avoiding any injury in the event that the projectile would tilt at 90 ° at the time of impact.
• the ammunition comprises a case (4) of generally cylindrical shape made of flexible plastic, for example.
• One end of the case (4) is closed and has a concentric chamber (4a) coaxially adapted to receive a propulsion assembly (5) of the projectile assembly.
• the projectile is housed in the case (4) after being introduced through its opening (4b).
• the deformable warhead (2) is disposed on the side of the opening of the case (4).
• the gaseous fluid necessary under a compression effect to ensure the dispersion of the products can come from a reservoir of the type of those used for air rifles and whose opening can be ensured by percussion with inertia or by means of a primer with retarder acting on a striker for projectiles launched manually or by a launcher in curved fire.

Applications Claiming Priority (3)

Publications (1)

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ID=9490373

Family Applications (1)

Country Status (4)

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• 1996
  • 1996-03-15 FR FR9603489A patent/FR2746179B1/fr not_active Expired - Fee Related
• 1997
  • 1997-03-13 WO PCT/FR1997/000444 patent/WO1997035158A1/fr not_active Application Discontinuation
  • 1997-03-13 EP EP97914383A patent/EP0886753A1/de not_active Ceased
  • 1997-03-14 ZA ZA9702226A patent/ZA972226B/xx unknown

Non-Patent Citations (1)

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