EP0270421A1 - Grenade having dynamic arming means - Google Patents
Grenade having dynamic arming means Download PDFInfo
- Publication number
- EP0270421A1 EP0270421A1 EP87402529A EP87402529A EP0270421A1 EP 0270421 A1 EP0270421 A1 EP 0270421A1 EP 87402529 A EP87402529 A EP 87402529A EP 87402529 A EP87402529 A EP 87402529A EP 0270421 A1 EP0270421 A1 EP 0270421A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grenade
- spoon
- rocket
- counterweight
- ribbon
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
- F42C15/23—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin by unwinding a flexible ribbon or tape
Definitions
- weighted ribbons have been used for a long time which are wrapped around grenades and which hold an operating blocking part: they prevent arming. When such grenades are launched, the weighted ribbon unwinds dynamically, and when the unwinding is sufficient, arming occurs.
- such grenades remain in the safety position during the start of their trajectory, which prevents any premature bursting, which could result either from the too rapid combustion of the pyrotechnic delay, or from the voluntary but too long retention of the grenade in the hand after having caused the firing of the rocket, either of the release of the grenade during the launching, or of the fall of the launcher wounded by bullet, or finally of the percussion on an obstacle close to the percussion rocket.
- weighted ribbons are inexpensive, and their operation is very safe and very regular, being sheltered from manufacturing defects or poor aging of all other delay systems (pyrotechnics, watchmaking, electronics, etc.).
- known weighted tape systems have drawbacks: - the cap systems, where the counterweight is free as soon as the cap is removed, have caused inadvertent unwinding or inadvertent lack of lighting, - systems where the tape is attached to a handle-spoon are unattainable in economic series due to their complex shapes and parts (see French Patent No. 1,419,979) or are too fragile and impossible to seal (see U.S. patent No.
- the present invention aims to make compatible the movement of a spoon and the movement of a weighted tape, mainly in a hand grenade, but also in a rifle grenade.
- the single figure is an axial section of the external parts of the grenade, the body and the rocket being simply profiled.
- the grenade has the body 1 and the rocket 2.
- the rocket 2 is surrounded axially by a ribbon 3 which retains the arming device and which is ballasted with a counterweight 4 at the outer end of its winding.
- This weighted tape 3 and 4 is covered with an elastic sealing band 5, the two ends of which overlap and are held in place by the support of the safety lever 6, said spoon, on the counterweight 4.
- the spoon 6 has a protuberance 7 which compresses and immobilizes both the elastic band 5 and the weighted tape 3 and 4.
- the upper end 8 of the spoon 6 is introduced into an orifice of the rocket, and the spoon is shaped at 9 so that it can be fixed using a known pin 10.
- This pin 10 penetrates into the support 'i for fixing, this support being disposed at an angle on the top of the body 1 of the grenade and being made integral with the rocket 2 by any locking 12: rod, key, hook, pusher, lock rotary etc.
- the rocket has a cap 13, to protect the top of the rocket.
- This cap contains a housing 14 for a part for selecting the operating mode of the rocket.
- the cap 13 can control a selector and can remain in place during the launching of the grenade.
- the body 1 may comprise axially, opposite the rocket, a means 15 for hooking a tubular tail 16 allowing rifle shooting, this tubular tail being able to slide on the flame hider of the rifle.
- This means 15 comprises a removable part, which is removed to be replaced by the end of the tubular tail.
- the grenade can be thrown by hand or shot with a rifle. In both cases, its operating mode (fusing, striking, or percussive-fusing) must be chosen, by means of the displacement of the selector, which is done directly by removing the cap 13, or indirectly by turning it so axial.
- the spoon 6 By inertia, and whatever the movement of the grenade, the spoon 6 instantly moves away from the body 1, which releases both the elastic band 5 and the counterweight 4. At the same time, also by inertia, the counterweight grows the elastic band and the spoon, before releasing.
- the spoon ejects, the elastic band leaves the grenade, and the counterweight causes the braid 3 to unfold, by inertia and by aerodynamic braking.
- the arming device is released.
- the tail tail 16 must be fixed in the body 1, after having removed the removable part from the hooking means 15.
- the support 11 is detached at an angle from the grenade, driving the spoon 6, and the flyweight pulls strongly on the ribbon, which causes the grenade to turn on the rifle and the cocking of the rocket.
- the rotation of the grenade on the rifle ensures the precision of the shooting, the trajectory not undergoing any deviation due to the absence of unbalance.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
La grenade comprend un corps (1) et une fusée (2), l'armement de la fusée étant subordonné au déroulement dynamique d'un ruban (3) qui entoure la fusée (2) et qui est lesté d'une masselotte (4) maintenue en place par une cuiller (6) non solidaire de la masselotte (4). Par inertie, la cuiller (6) est éjectée et la masselotte (4) se déplace avec déroulement du ruban (3) et armement de la fusée (2).The grenade comprises a body (1) and a rocket (2), the cocking of the rocket being subject to the dynamic unwinding of a ribbon (3) which surrounds the rocket (2) and which is ballasted with a counterweight (4 ) held in place by a spoon (6) which is not secured to the counterweight (4). By inertia, the spoon (6) is ejected and the flyweight (4) moves with unwinding of the ribbon (3) and cocking of the rocket (2).
Description
Dans le secteur des armements conventionnels d'infanterie, on utilise depuis longtemps des rubans lestés qui sont enroulés autour des grenades et qui retiennent une pièce de blocage de fonctionnement: ils empêchent l'armement. Quand de telles grenades sont lancées, le ruban lesté se déroule de façon dynamique, et lorsque le déroulement est suffisant, l'armement se produit.In the conventional infantry armaments sector, weighted ribbons have been used for a long time which are wrapped around grenades and which hold an operating blocking part: they prevent arming. When such grenades are launched, the weighted ribbon unwinds dynamically, and when the unwinding is sufficient, arming occurs.
Ainsi, de telles grenades restent en position de sécurité pendant le début de leur trajectoire, ce qui empêche tout éclatement prématuré, qui pourrait résulter, soit de la combustion trop rapide du retard pyrotechnique, soit de la rétention volontaire mais trop longue de la grenade dans la main après avoir provoqué la mise à feu de la fusée, soit du lâchage de la grenade lors du lancer, soit de la chute du lanceur blessé par balle, soit enfin de la percussion sur un obstacle rapproché de la fusée percutante.Thus, such grenades remain in the safety position during the start of their trajectory, which prevents any premature bursting, which could result either from the too rapid combustion of the pyrotechnic delay, or from the voluntary but too long retention of the grenade in the hand after having caused the firing of the rocket, either of the release of the grenade during the launching, or of the fall of the launcher wounded by bullet, or finally of the percussion on an obstacle close to the percussion rocket.
Ces rubans lestés sont peu coûteux, et leur fonctionnement est très sûr et très régulier, étant à l'abri des défauts de fabrication ou du mauvais vieillissement de tous les autres systèmes de retardement (pyrotechnique, horloger, électronique etc.). Pourtant, les systèmes connus de ruban lesté ont des inconvénients:
- les systèmes à capuchon, où la masselotte est libre dès que le capuchon est enlevé, ont provoqué des déroulements involontaires par inadvertance ou par manque d'éclairage,
- les systèmes où le ruban est attaché à une poignée-cuiller sont irréalisables en série économique du fait de la complexité de leurs formes et de leurs pièces (cf le brevet français no 1 419 979) ou sont trop fragiles et impossibles à rendre étanches (cf le brevet américain no 3 112 703),
- les systèmes où une cuiller classique a été superposée au-dessus du ruban lesté se sont révélés irréalisables (cf le brevet allemand no 1 099 910) du fait de leurs formes, de leur complexité (nombreux ressorts et masselottes), et de leur manque d'étanchéité, le déroulement du ruban étant gêné en particulier par la présence perturbatrice et trop longue de la cuiller à crochet,
- enfin, le système à capuchon et à muselage supplémentaire du ruban lesté (cf mon propre brevet français no 72.31 038) ne présente pas de défaut d'emploi ---il a été adopté sans réserve par l'armée française---, mais les utilisateurs ont finalement préféré continuer à disposer d'une grenade à cuiller, de façon à faciliter l'instruction aussi longtemps que le stock de guerre continuera à comporter les anciennes grenades à cuiller, et ce, bien que la cuiller offre, par elle-même, une sécurité illusoire et trompeuse, source d'innombrables accidents dans le monde.These weighted ribbons are inexpensive, and their operation is very safe and very regular, being sheltered from manufacturing defects or poor aging of all other delay systems (pyrotechnics, watchmaking, electronics, etc.). However, known weighted tape systems have drawbacks:
- the cap systems, where the counterweight is free as soon as the cap is removed, have caused inadvertent unwinding or inadvertent lack of lighting,
- systems where the tape is attached to a handle-spoon are unattainable in economic series due to their complex shapes and parts (see French Patent No. 1,419,979) or are too fragile and impossible to seal (see U.S. patent No. 3,112,703),
- systems where classical spoon was superimposed above the weighted tape proved unfeasible (see German Patent No. 1,099,910) due to their shapes, their complexity (many springs and weights), and their lack of tightness, the unwinding of the ribbon being hampered in particular by the disturbing and too long presence of the hook spoon,
- Finally, the system to cap and further muzzling tape weighted (see my own French patent No. 038 72.31) shows no default job --- it was adopted without reservation by the French army --- , but the users finally preferred to continue to have a spoon grenade, in order to facilitate the instruction as long as the war stock continues to contain the old spoon grenades, and this, although the spoon offers, for itself, an illusory and deceptive security, the source of countless accidents in the world.
La présente invention a pour objet de rendre compatibles le mouvement d'une cuiller et le mouvement d'un ruban lesté, principalement dans une grenade à main, mais également dans une grenade à fusil.The present invention aims to make compatible the movement of a spoon and the movement of a weighted tape, mainly in a hand grenade, but also in a rifle grenade.
Les moyens de l'invention sont décrits ci-après de manière préférentielle et non limitative, telle que représentée dans le dessin.The means of the invention are described below in a preferential and non-limiting manner, as shown in the drawing.
La figure unique est une coupe axiale des pièces externes de la grenade, le corps et la fusée étant simplement profilés.The single figure is an axial section of the external parts of the grenade, the body and the rocket being simply profiled.
La grenade comporte le corps 1 et la fusée 2.The grenade has the
La fusée 2 est entourée axialement d'un ruban 3 qui retient le dispositif d'armement et qui est lesté d'une masselotte 4 à l'extrémité externe de son enroulement. Ce ruban lesté 3 et 4 est recouvert d'une bande élastique 5 d'étanchéité dont les deux extrémités se superposent et sont maintenues en place par l'appui du levier de sécurité 6, dit cuiller, sur la masselotte 4.The
La cuiller 6 comporte une protubérance 7 qui comprime et immobilise à la fois la bande élastique 5 et le ruban lesté 3 et 4.The spoon 6 has a protuberance 7 which compresses and immobilizes both the elastic band 5 and the weighted tape 3 and 4.
L'extrémité supérieure 8 de la cuiller 6 est introduite dans un orifice de la fusée, et la cuiller est conformée en 9 de façon à pouvoir être fixée à l'aide d'une goupille connue 10.The upper end 8 of the spoon 6 is introduced into an orifice of the rocket, and the spoon is shaped at 9 so that it can be fixed using a known pin 10.
Cette goupille 10 pénètre dans le support 'i de fixation, ce support étant disposé en biais sur le haut du corps 1 de la grenade et étant rendu solidaire de la fusée 2 par un verrouillage quelconque 12: tige, clé, crochet, poussoir, verrou rotatif etc.This pin 10 penetrates into the support 'i for fixing, this support being disposed at an angle on the top of the
La fusée comporte un capuchon 13, pour protéger le haut de la fusée. Ce capuchon contient un logement 14 pour une pièce de sélection du mode de fonctionnement de la fusée. Ainsi, par rotation, le capuchon 13 peut commander un sélecteur et peut rester en place lors du lancement de la grenade.The rocket has a
Enfin, le corps 1 peut comporter axialement, à l'opposé de la fusée, un moyen 15 d'accrochage d'une queue tubulaire 16 permettant le tir au fusil, cette queue tubulaire pouvant coulisser sur le cache-flamme du fusil. Ce moyen 15 comprend une pièce amovible, qui est enlevée pour être remplacée par le bout de la queue tubulaire.Finally, the
La grenade peut être lancée à la main ou tirée au fusil. Dans les deux cas, son mode de fonctionnement (fusant, percutant, ou percutant-fusant) doit être choisi, au moyen du déplacement du sélecteur, ce qui est fait directement en enlevant le capuchon 13, ou indirectement en tournant celui-ci de façon axiale.The grenade can be thrown by hand or shot with a rifle. In both cases, its operating mode (fusing, striking, or percussive-fusing) must be chosen, by means of the displacement of the selector, which is done directly by removing the
Pour lancer à la main, il suffit de prendre la grenade dans une main, de retirer la goupille 10, et de lancer.To launch by hand, simply take the grenade in one hand, remove the pin 10, and launch.
Par inertie, et quel que soit le mouvement de la grenade, la cuiller 6 s'éloigne instantanément du corps 1, ce qui libère à la fois la bande élastique 5 et la masselotte 4. En même temps, par inertie également, la masselotte pousse la bande élastique et la cuiller, avant de se libérer.By inertia, and whatever the movement of the grenade, the spoon 6 instantly moves away from the
Dès lors, la cuiller s'éjecte, la bande élastique quitte la grenade, et la masselotte provoque le déroulement de la tresse 3, par inertie et par freinage aérodynamique. En fin de déroulement, le dispositif d'armement est libéré.Consequently, the spoon ejects, the elastic band leaves the grenade, and the counterweight causes the braid 3 to unfold, by inertia and by aerodynamic braking. At the end of the process, the arming device is released.
Pour que le déroulement ne soit pas perturbé, il est nécessaire d'abord que la cuiller s'éjecte très vite, ce qui exclut en particulier toute conformation en crochet de son extrémité du haut, et ensuite que la fusée ne comporte aucune protubérance ni aucun creux indésirables.So that the course is not disturbed, it is necessary first of all that the spoon ejects very quickly, which excludes in particular any conformation in hook of its top end, and then that the rocket does not have any protuberance nor any undesirable hollows.
Pour tirer au fusil, deux opérations supplémentaires sont requises.To fire the rifle, two additional operations are required.
Tout d'abord, il faut fixer la queue empennée 16 dans le corps 1, après avoir ôté la pièce amovible du moyen d'accrochage 15.First of all, the tail tail 16 must be fixed in the
Ensuite, après avoir emboité la grenade sur le fusil, il faut déverrouiller le support 11 en libérant le verrouillage 12, mais sans enlever la goupille 10.Then, after having fitted the grenade on the rifle, it is necessary to unlock the support 11 by releasing the lock 12, but without removing the pin 10.
Au départ du coup, le support 11 se détache en biais de la grenade, en entraînant la cuiller 6, et la masselotte tire fortement sur le ruban, ce qui provoque la giration de la grenade sur le fusil et l'armement de la fusée. La rotation de la grenade sur le fusil assure la précision du tir, la trajectoire ne subissant aucune déviation en raison de l'absence de balourd.At the start of the shot, the support 11 is detached at an angle from the grenade, driving the spoon 6, and the flyweight pulls strongly on the ribbon, which causes the grenade to turn on the rifle and the cocking of the rocket. The rotation of the grenade on the rifle ensures the precision of the shooting, the trajectory not undergoing any deviation due to the absence of unbalance.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8615712A FR2606501B1 (en) | 1986-11-12 | 1986-11-12 | DYNAMIC WEAPON GRENADE |
| FR8615712 | 1986-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0270421A1 true EP0270421A1 (en) | 1988-06-08 |
Family
ID=9340729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87402529A Withdrawn EP0270421A1 (en) | 1986-11-12 | 1987-11-10 | Grenade having dynamic arming means |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4773330A (en) |
| EP (1) | EP0270421A1 (en) |
| BR (1) | BR8706173A (en) |
| FR (1) | FR2606501B1 (en) |
| IL (1) | IL84438A0 (en) |
| MA (1) | MA21106A1 (en) |
| OA (1) | OA08775A (en) |
| PT (1) | PT86124A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6968785B2 (en) * | 2003-09-22 | 2005-11-29 | The United States Of America As Represented By The Secretary Of The Army | Locking and stabilizing device for grenades |
| US7191707B1 (en) * | 2005-11-15 | 2007-03-20 | Davis Russell J | Spherical rolling explosive ordinance |
| BRPI1002280B1 (en) * | 2010-06-11 | 2020-03-24 | Condor S.A. Indústria Química | HAND GRENADE |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR503325A (en) * | 1917-07-18 | 1920-06-08 | Roberto Taeggi Piscicelli | Fusing grenade cap with automatic ignition during flight |
| FR861148A (en) * | 1939-10-27 | 1941-02-01 | Igniter plug for grenades and similar projectiles | |
| FR1048876A (en) * | 1951-07-23 | 1953-12-24 | Plasticas Oramil S L | Hand grenade |
| DE1057917B (en) * | 1956-06-26 | 1959-05-21 | Andre Losfeld | All-round detonator for hand grenades |
| GB2059553A (en) * | 1979-09-28 | 1981-04-23 | Oregon Ets Patentverwertung | Safety Lever for a Hand Grenade |
| AT381586B (en) * | 1985-01-29 | 1986-11-10 | Oregon Etablissement F R Paten | Safety clip for hand grenades |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112703A (en) * | 1954-12-13 | 1963-12-03 | Urdapilleta Jose Luis Amilibin | Universal hand grenades and projectiles |
| TR19043A (en) * | 1972-09-01 | 1978-03-20 | Losfeld C | ACCOUNT FUE FOR VARIOUS PURPOSES |
-
1986
- 1986-11-12 FR FR8615712A patent/FR2606501B1/en not_active Expired
-
1987
- 1987-11-10 MA MA21347A patent/MA21106A1/en unknown
- 1987-11-10 EP EP87402529A patent/EP0270421A1/en not_active Withdrawn
- 1987-11-11 IL IL84438A patent/IL84438A0/en unknown
- 1987-11-11 BR BR8706173A patent/BR8706173A/en unknown
- 1987-11-12 OA OA59224A patent/OA08775A/en unknown
- 1987-11-12 US US07/119,574 patent/US4773330A/en not_active Expired - Fee Related
- 1987-11-12 PT PT86124A patent/PT86124A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR503325A (en) * | 1917-07-18 | 1920-06-08 | Roberto Taeggi Piscicelli | Fusing grenade cap with automatic ignition during flight |
| FR861148A (en) * | 1939-10-27 | 1941-02-01 | Igniter plug for grenades and similar projectiles | |
| FR1048876A (en) * | 1951-07-23 | 1953-12-24 | Plasticas Oramil S L | Hand grenade |
| DE1057917B (en) * | 1956-06-26 | 1959-05-21 | Andre Losfeld | All-round detonator for hand grenades |
| GB2059553A (en) * | 1979-09-28 | 1981-04-23 | Oregon Ets Patentverwertung | Safety Lever for a Hand Grenade |
| AT381586B (en) * | 1985-01-29 | 1986-11-10 | Oregon Etablissement F R Paten | Safety clip for hand grenades |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2606501A1 (en) | 1988-05-13 |
| PT86124A (en) | 1988-12-15 |
| FR2606501B1 (en) | 1989-06-02 |
| BR8706173A (en) | 1988-06-14 |
| OA08775A (en) | 1989-03-31 |
| MA21106A1 (en) | 1988-07-01 |
| US4773330A (en) | 1988-09-27 |
| IL84438A0 (en) | 1988-04-29 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
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| 17P | Request for examination filed |
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| 17Q | First examination report despatched |
Effective date: 19891117 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
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