EP2439483A1 - Granate mit nicht tödlichen Splittern - Google Patents
Granate mit nicht tödlichen Splittern Download PDFInfo
- Publication number
- EP2439483A1 EP2439483A1 EP11184142A EP11184142A EP2439483A1 EP 2439483 A1 EP2439483 A1 EP 2439483A1 EP 11184142 A EP11184142 A EP 11184142A EP 11184142 A EP11184142 A EP 11184142A EP 2439483 A1 EP2439483 A1 EP 2439483A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grenade
- pads
- pomegranate
- holding element
- studs
- 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
Links
- 231100001160 nonlethal Toxicity 0.000 title 1
- 230000009172 bursting Effects 0.000 claims abstract description 17
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 6
- 241000219991 Lythraceae Species 0.000 claims description 22
- 235000014360 Punica granatum Nutrition 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 7
- 231100000518 lethal Toxicity 0.000 claims description 5
- 230000001665 lethal effect Effects 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002397 thermoplastic olefin Polymers 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000000977 initiatory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002654 heat shrinkable material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 231100000225 lethality Toxicity 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- F42B12/56—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
-
- 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
- F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
- F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
- F42B12/32—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the hull or case comprising a plurality of discrete bodies, e.g. steel balls, embedded therein or disposed around the explosive charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B27/00—Hand grenades
Definitions
- the present invention relates to the field of fragmented grenades with reduced lethality.
- Low lethal flash grenades are designed not to cause serious injury to persons affected by splinters.
- Such grenades include shards or projectiles of low kinetic energy.
- reduced lethal flash grenades comprising a central bursting sheath, at least one ring of studs arranged around the sheath to be propelled during the bursting of the central sheath, and a mechanical holding element are known in particular. studs before bursting of the sheath.
- the document FR-2741436 describes a grenade comprising means for assembling the studs in the form of elements projecting from the studs and designed to be clipped onto the central bursting sheath, combined with a heat-shrinkable outer sheath.
- the document FR-2867849 describes a grenade in which the studs are formed of an elastically deformable sheet of projectiles connected by material bridges integrally molded with the projectiles.
- the document FR-A-2896868 discloses a grenade comprising assembly means in the form of gutter means provided to receive the projectiles preferably combined with an outer shell of heat-shrinkable material.
- the present invention now aims to provide an improved grenade including that it ensures excellent reliability, that is to say, a dispersion provided homogeneously for the pads, while allowing economic realization.
- the term "overmoulded” must be understood in a broad sense. It includes the realization of the holding element on the ring of pads, by filling the free volume inside a mold or matrix in which said ring of pads is prepositioned, whatever the filling technique, for example any actual molding technique, such as injection molding or material transfer, or material expansion.
- the grenade according to the present invention can give rise to several embodiments.
- each ring preferably itself comprises several stages of axially juxtaposed ring crowns.
- the holding element may be formed of a single piece of synthetic material overmolded on all of the pads, or of several pieces overmolded on respective rings and assembled together or several parts overmolded on floors respective crowns of studs and assembled together.
- the grenade according to the present invention illustrated in the accompanying figures, has a cylindrical outer envelope of revolution centered on an axis O-O.
- This grenade 10 comprises a central bursting sheath 100, at least one ring of plots 200 and an overmoulded holding member 300.
- An initiation device is associated with the bursting sheath 100.
- the grenade When designed to be used by hand, the grenade is equipped with an igniter plug.
- igniter plugs, delay plugs and aforementioned delay propulsion devices are well known to those skilled in the art and will therefore not be described in more detail later.
- the caliber of the grenade may be subject to any suitable variant, the grenade according to the present invention being preferably, but not limited to caliber 56mm or 40mm.
- These three stages 202, 204 and 206 of pads 200 are arranged in the form of a common ring 280, that is to say that they all have the same internal radius and the same external radius.
- a grenade according to the present invention comprising alternatively four stages 202, 204, 206 and 208 each comprising six pads 200 equi-distributed around the axis OO and also arranged in the form of a common ring 280.
- the number of stages of the grenade can be the subject of many variants. It depends in particular on the application of the grenade and its caliber.
- the grenade according to the present invention comprises, as indicated above, at least one stage of pads. Furthermore, preferably, in the context of the invention, each grenade preferably comprises from three to five stages of pads 200.
- the number of pads 200 per floor depends on the size of the pads and the caliber of the ammunition.
- each stage preferably comprises from four to eight pads 200.
- the grenade according to the present invention may comprise several concentric rings of studs 200 at the same stage, that is to say several crowns of studs arranged on the same axial level of the grenade.
- each of the three floors of the grenade includes two concentric rings of studs.
- the radially inner crown has 6 pads 200, while the radially outer ring has 12 pads 200.
- this number of pads per ring, this number of stages and the number of rings per floor, are not limiting.
- the pads 200 of the radially inner ring are arranged in the form of a first common ring 280, while the pads 200 of the radially outer ring are arranged in the form of a second common ring 282.
- the central sheath 100 is a cylindrical sheath placed in the central volume of the grenade and comprising a pyrotechnic charge adapted to ensure the expulsion of the pads 200 during its initiation. This initiation of the pyrotechnic charge placed in the central duct is operated, depending on use, by the igniter plug, the delay plug or the delay propulsion device, after transmission by a suitable pyrotechnic delay.
- Such a bursting sheath is known per se to those skilled in the art. It will therefore not be described in more detail later as to its structure or composition.
- the sheath 100 preferably comprises a container tube 102 which is optionally formed of plastic, elastomer or metal, or even another material, for example cardboard.
- This tube 102 houses the aforementioned pyrotechnic charge.
- the pyrotechnic sheath 100 may be attached to a central internal chamber of the pomegranate body after overmoulding of the holding element 300 on all the pads 200 or else integrated into the internal volume of the set of pads 200 before making the holding member 300 by overmolding.
- the embodiment illustrated on the figure 8 corresponds to the case of integration of the pyrotechnic sheath 100 into the internal volume of all the pads before making the holding member 300 by overmolding.
- the embodiment illustrated on the figure 11 corresponds to the case of a pyrotechnic sheath 100 reported in the internal chamber central pomegranate body after overmolding the holding member 300 on all of the pads 200.
- the sheath 100 is attached to the central inner chamber of the grenade after molding of the holding element 300 and fixed in this internal chamber by gluing at the interface between one end of the sheath 100 and the internal volume of the holding element 300, at the area referenced 150.
- the pads 200 are preferably formed of a relatively low density material in order to have, as previously indicated, a low kinetic energy and avoid causing serious injury.
- the pads 200 are preferably made of plastic or elastomer.
- each pad is preferably between 7 and 15 grams.
- the precise mass of each pad 200 can be determined by the nature of the product comprising the pad, in particular charges added to the base material component, and by the geometry of the pad.
- each pad 200 is preferably between 30 and 90 shores A.
- Each stud 200 further comprises chamfers or rounded at each junction zone two by two of the aforementioned faces 210, 215, 220, 225, 230 and 235.
- the visible chamfers on the Figures 3A and 3B are referenced 212, 214, 216, 218, 231, 232, 233, 236 and 237.
- the axial end faces 230 and 235 may not be flat and parallel to each other. They can be flat but inclined between them. They may also not be flat, but instead have relief shapes, complementary to the adjacent faces of two neighboring studs 200, this for example to perfect the stability of the assembly.
- the pads of the superposed stages are preferably aligned with each other in the form of columns parallel to the axis O-O.
- the chamfers 214, 218 adjacent to the radially outer main face 210 and which extend parallel to the axis O-O form longitudinal channels 240.
- the chamfers 212, 216 adjacent to the radially outer main face 210 which extend transversely to the axis O-O define annular channels 250 transverse to the axis O-O.
- the aforementioned geometry and the dimension of the pads 200 are such that when they are placed in the mold or complementary matrix for the formation of the holding element 300, the pads 200 are on the one hand , in contact with the cylindrical inner casing of the mold by their radially outer main surface 210 and are, moreover, in contact two by two by their radial main faces 220, 225.
- the pads are in contact two by two by their axial end faces 230, 235.
- the studs are firmly immobilized in position in the mold or the matrix, without relative freedom of movement, before making the holding element 300.
- the radially outer faces 210 of the studs 200 are flush with the external surface of the grenade after forming the holding element 300.
- the overmolded holding element 300 is made of a material typically chosen from the group of elastomers, such as polyurethane, neoprene or silicone, or from the group of thermoplastic polymers, in particular styrenic and / or vinyl thermoplastic polymers, such as polystyrene, or thermoplastic polyolefin polymers such as polyethylene.
- elastomers such as polyurethane, neoprene or silicone
- thermoplastic polymers in particular styrenic and / or vinyl thermoplastic polymers, such as polystyrene, or thermoplastic polyolefin polymers such as polyethylene.
- the holding element 300 is made by filling the volumes left free by the abovementioned chamfers formed on the pads 200 and, if appropriate, by a volume internal to the assembly of pads 200, in a mold or die defining the external envelope sought. for the pomegranate.
- the structure of the holding element 300 can be obtained typically by a molding process, in particular by injection molding or material transfer (for example a polyurethane, neoprene, silicone or polyethylene structure ... ), or by expansion of material in a matrix (for example an expanded high-density polystyrene structure).
- a molding process in particular by injection molding or material transfer (for example a polyurethane, neoprene, silicone or polyethylene structure ... ), or by expansion of material in a matrix (for example an expanded high-density polystyrene structure).
- the holding element 300 comprises a cylindrical external grid 310 which fills the outer chamfers of the studs 200.
- the gate 310 thus comprises straight longitudinal members 312 parallel to each other and parallel to the axis OO filling the channels 240 and annular connecting rails 314 that fill the channels 250.
- the holding element 300 further comprises feet 320 radial to the axis OO, internal to the grid 310 and connected to the grid 310 at the junctions between the longitudinal members 312 and sleepers 314.
- the feet 320 provide a connection between the outer gate 310 and an inner member 330 formed either of a grid homologous to the outer gate 310 or a sheath.
- a grenade comprising an internal grid 330, it comprises spars parallel to the axis O-O and transverse cross members transverse to the axis O-O.
- central element 330 formed of a sleeve, it is formed of a continuous cylindrical skirt centered on the axis O-O.
- the holding member 300 has a more complex structure and comprises in particularly an intermediate gate structure 322 placed between the rings of stud rings 200 and connected to the outer gate 310 and to the inner member 330 by feet 320.
- a flange 350 transverse to the axis OO, at least partially closing the central channel for receiving the bursting sheath 100.
- support inserts in the mold or matrix delimiting the holding member 300, which are used for positioning and axial retention of the pads 200 in the mold or matrix.
- Such a flange 350 which at least partially covers an axial end of the grenade, reinforces the cohesion of the set of pads 200, especially in case of falling of the grenade body on a rigid surface, before implementation.
- the pads 200 are ejected radially away from the axis OO under the effect of the pressure and / or the shock wave generated by the bursting of the sheath 100.
- the holding member 300 comprises an outer gate 310 which delimits wide windows allowing the expulsion of the studs 200 by slight deformation of the component material of the longitudinal members 312 and cross members 314, without impeding the propulsion and the ejection of the pads 200.
- the grenade is not limited to an assembly of three floors of studs arranged in the form of a common ring.
- It may comprise a number of stages and / or concentric rings of upper studs.
- the overmolded holding element 300 forms a network of longitudinal members and cross members integral with each other which ensures the cohesion of all the studs 200.
- the holding element is formed of a single piece 300 of synthetic material overmolded on all the sets of rings of studs 200 juxtaposed axially.
- the grenade according to the present invention may comprise a holding member 300 formed of several parts overmolded on respective rings and assembled together or several parts overmolded on respective stages of rings of studs and assembled together.
- FIGS. 18 and 19 an alternative embodiment of the grenade according to the present invention comprising a holding element 300 formed of two parts 380, 382 overmolded on respective rings 380 and 382.
- the parts 380 and 382 are assembled together by the force exerted by the external overmolded part 382 on the internal part 380, resulting from the constraints after overmolding.
- the embodiment variant represented on the Figures 18 and 19 corresponds to the disposition of a second ring of studs 200 on a heart corresponding to the grenade illustrated on the figure 8 and then overmolding the outer support member 382.
- the pads 200 being according to the present invention individualized from the outset, as opposed to certain grenades of the prior art comprising a sheet of projectiles connected by bridges of material, the present invention ensures that each projectile individually has a low mass and hence a low kinetic energy.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Prostheses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1058190A FR2965910B1 (fr) | 2010-10-08 | 2010-10-08 | Grenade a eclats non letaux |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2439483A1 true EP2439483A1 (de) | 2012-04-11 |
EP2439483B1 EP2439483B1 (de) | 2014-11-05 |
Family
ID=44012667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110184142 Active EP2439483B1 (de) | 2010-10-08 | 2011-10-06 | Granate mit nicht tödlichen Splittern |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2439483B1 (de) |
ES (1) | ES2529504T3 (de) |
FR (1) | FR2965910B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2989457A1 (fr) * | 2012-04-12 | 2013-10-18 | Armement Et D Etudes Alsetex Soc D | Grenade a eclats non letaux comprenant des moyens de maintien de bouchon allumeur |
US9989341B2 (en) | 2014-04-21 | 2018-06-05 | Orbital Atk, Inc. | Stun grenades and methods of assembling stun grenades |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1154437A (en) * | 1914-07-18 | 1915-09-21 | Cie Forges Et Acieries Marine | Artillery-projectile. |
FR2719373A1 (fr) | 1994-05-02 | 1995-11-03 | Sae Alsetex | Dispositif de propulsion à portées variables pour grenade anti-émeutes. |
FR2741436A1 (fr) | 1995-11-16 | 1997-05-23 | Applic Des Procedes Lefebvre S | Grenade fragmentable en projectiles de faible energie cinetique |
FR2863352A1 (fr) | 2003-12-03 | 2005-06-10 | Armement Et D Etudes Alsetex S | Dispositif de propulsion d'une grenade anti-emeutes |
FR2867849A1 (fr) | 2004-03-16 | 2005-09-23 | Catherine Tanguy | Grenage fragmentable |
FR2896868A1 (fr) | 2006-01-30 | 2007-08-03 | Applic Des Procedes Lefebvre S | Grenade fragmentable en projectiles de faible energie cinetique. |
US20080006171A1 (en) * | 2006-07-05 | 2008-01-10 | Mr. George Leroy Confer | XM-5866 Stingball flashbang grenade |
FR2915794A1 (fr) * | 2007-05-02 | 2008-11-07 | Davey Bickford Snc | Grenade a fragmentation et procede de fabrication d'un ensemble de projectiles |
-
2010
- 2010-10-08 FR FR1058190A patent/FR2965910B1/fr active Active
-
2011
- 2011-10-06 ES ES11184142.5T patent/ES2529504T3/es active Active
- 2011-10-06 EP EP20110184142 patent/EP2439483B1/de active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1154437A (en) * | 1914-07-18 | 1915-09-21 | Cie Forges Et Acieries Marine | Artillery-projectile. |
FR2719373A1 (fr) | 1994-05-02 | 1995-11-03 | Sae Alsetex | Dispositif de propulsion à portées variables pour grenade anti-émeutes. |
FR2741436A1 (fr) | 1995-11-16 | 1997-05-23 | Applic Des Procedes Lefebvre S | Grenade fragmentable en projectiles de faible energie cinetique |
FR2863352A1 (fr) | 2003-12-03 | 2005-06-10 | Armement Et D Etudes Alsetex S | Dispositif de propulsion d'une grenade anti-emeutes |
FR2867849A1 (fr) | 2004-03-16 | 2005-09-23 | Catherine Tanguy | Grenage fragmentable |
FR2896868A1 (fr) | 2006-01-30 | 2007-08-03 | Applic Des Procedes Lefebvre S | Grenade fragmentable en projectiles de faible energie cinetique. |
US20080006171A1 (en) * | 2006-07-05 | 2008-01-10 | Mr. George Leroy Confer | XM-5866 Stingball flashbang grenade |
FR2915794A1 (fr) * | 2007-05-02 | 2008-11-07 | Davey Bickford Snc | Grenade a fragmentation et procede de fabrication d'un ensemble de projectiles |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2989457A1 (fr) * | 2012-04-12 | 2013-10-18 | Armement Et D Etudes Alsetex Soc D | Grenade a eclats non letaux comprenant des moyens de maintien de bouchon allumeur |
EP2650637A3 (de) * | 2012-04-12 | 2013-10-30 | Societe d'Armement et d'Etudes Alsetex | Nichttödliche Splittergranate mit Zündkappenhaltevorrichtung |
US9989341B2 (en) | 2014-04-21 | 2018-06-05 | Orbital Atk, Inc. | Stun grenades and methods of assembling stun grenades |
EP2937663B1 (de) | 2014-04-21 | 2018-06-13 | Orbital ATK, Inc. | Blendgranaten und montageverfahren für blendgranaten |
Also Published As
Publication number | Publication date |
---|---|
FR2965910A1 (fr) | 2012-04-13 |
EP2439483B1 (de) | 2014-11-05 |
FR2965910B1 (fr) | 2012-11-02 |
ES2529504T3 (es) | 2015-02-20 |
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