EP0076210A1 - Electric bridge-wire initiator for pyrotechnic charges - Google Patents
Electric bridge-wire initiator for pyrotechnic charges Download PDFInfo
- Publication number
- EP0076210A1 EP0076210A1 EP82401734A EP82401734A EP0076210A1 EP 0076210 A1 EP0076210 A1 EP 0076210A1 EP 82401734 A EP82401734 A EP 82401734A EP 82401734 A EP82401734 A EP 82401734A EP 0076210 A1 EP0076210 A1 EP 0076210A1
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- EP
- European Patent Office
- Prior art keywords
- pyrotechnic
- charge
- initiator
- electrodes
- conductive ink
- 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.)
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Links
- 239000003999 initiator Substances 0.000 title claims description 18
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000977 initiatory effect Effects 0.000 claims description 9
- 238000007650 screen-printing Methods 0.000 claims description 5
- 238000001465 metallisation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000011324 bead Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 2
- 150000004706 metal oxides Chemical class 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 2
- 235000012633 Iberis amara Nutrition 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WETZJIOEDGMBMA-UHFFFAOYSA-L lead styphnate Chemical compound [Pb+2].[O-]C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C([O-])=C1[N+]([O-])=O WETZJIOEDGMBMA-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- MHWLNQBTOIYJJP-UHFFFAOYSA-N mercury difulminate Chemical compound [O-][N+]#C[Hg]C#[N+][O-] MHWLNQBTOIYJJP-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/124—Bridge initiators characterised by the configuration or material of the bridge
Definitions
- a pyrotechnic initiator also called a primer, is most generally composed, in addition to a metal cell serving as its body, a pyrotechnic composition called useful based on primary explosive and an initiation device proper.
- the present invention relates more particularly to electric pyrotechnic initiators whose initiation device uses the Joule effect. Under the effect of an electric current called firing sent by an external device into a resistor, an amount of heat is released causing the explosive decomposition of the useful pyrotechnic charge in contact with the resistor.
- the wire primers use as a heating element metallic wires which are resistive to contact in the useful pyrotechnic charge and welded at each end to electrodes.
- these metal wires do not have a high resistivity. Increasing the total resistance of the wire requires either an increase in length or a decrease in the diameter of the wire.
- this simple resistance wire technology is suitable for low resistance initiators, this does not exceed 10 ⁇ , and for small and medium series production.
- the primers with conductive compositions do not have an independent heating element, but it is the pyrotechnic composition itself which is made conductive, in general by means of graphite contribution and which conducts the electric current and is heated directly by the Joule effect. .
- the object of the present invention is to produce an electrical pyrotechnic initiator with an initiation device using the Joule effect, the electrical resistance of which can reach a value of the order of several tens or even hundreds of ohms.
- the use of a high resistance makes it possible on the one hand to increase the sensitivity and on the other hand to obtain a much better adaptation to the firing circuits comprising parasitic resistances and especially resistors for limiting the current. short circuit.
- the attenuation due to these additional resistances which can reach up to about fifteen ohms, decreases considerably when the resistance of the heating element rises above about fifty ohms.
- Another object is to produce such an initiator which is simple to manufacture, low cost, has good mechanical strength and is well suited to mass production, having significantly improved safety and operating reliability compared to known primers. That is, the value of the resistance can be set precisely.
- the invention consists in using such conductive inks as an initiation device by Joule heating of the pyrotechnic charge of a pyrotechnic initiator. The function of the conductive ink layer is then to generate heat after electrical power is applied.
- the subject of the invention is in fact an electrical pyrotechnic initiator comprising in particular a pyrotechnic charge and a device for initiating said charge by Joule heating contained in an outer envelope characterized in that the heating element consists of a layer of polymerized conductive ink placed in contact with the pyrotechnic charge and placed in electrical contact with two electrodes.
- the pyrotechnic initiator is characterized in that the conductive ink layer is deposited on a substrate in form A washer disposed under the pyrotechnic charge, so that it is in contact with la- said charge and with two electrodes consisting of two annular metallization layers concentric with the washer and provided thereon.
- the primer thus produced turns out to be of simple design with good mechanical resistance and of easy mass production.
- the layer of conductive ink is deposited by screen printing on the support, then baked in the oven and finally covered by a passivation layer.
- the primer according to the invention comprises an outer metal casing 1, which may be for example of brass, substantially cylindrical containing the useful pyrotechnic charge 2 of the primer in its upper part.
- the useful pyrotechnic charge 2 is separated from the outer casing by a brass bucket 3, the bottom of which is provided with a central opening 4.
- the pyrotechnic charge is covered by a protective nitrafilm 5 which compresses this charge 2 towards the conductive ink layer 6. This is in fact in contact with the payload 2 through the central opening in the bottom of the bucket 3.
- the conductive layer 6 is deposited on a ceramic support 7 in the form of a washer deposited under the cup 3.
- the useful pyrotechnic charge of the primer can consist, for example, of a pyrotechnic composition based on mercury fulminate, lead trinitroresorcinate or lead azide.
- FIG. 2 are shown the metallization layers 8 and 9 deposited on the ceramic substrate 5 or other material on and between which the conductive ink layer 6 is deposited:
- the conductive ink is advantageously deposited by screen printing on the substrate 7 then the whole is baked in the oven and then receives a passivation layer, in this case a protective varnish to prevent oxidation.
- the deposition technique (screen printing and firing), the conductive ink composed in particular of mixtures of glass or ceramic beads and metals and metal oxides, as well as the substrate (ceramic) are those used for hybrid circuits.
- the shapes and dimensions of the elements are adapted to the particular constraints of the initiators, in particular to the electrode system.
- a crimpable stud 10 which is separated from the outer casing 1 by a cup of insulator II.
- the stud emerges in contact on the one hand with the pyrotechnic charge 2 by the central vacuum of the washer 7 and on the other hand overflows on the annular layer 9.
- the bottom of the bucket 3 rests on the metallization layer 8.
- the annular layers 8 and 9 constitute electrodes when an electrical potential is applied between the pad 10 and the cup 3.
- the particular primer described is intended for igniting the propellant charge of a medium caliber ammunition.
- This type of primer can also be used for large caliber primer tubes, electric detonators for shell rockets or igniters for missiles and rockets.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Conductive Materials (AREA)
- Resistance Heating (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Le domaine de la présente invention est celui des initiateurs pyrotechniques a dispositif d'initiation électrique. Un initiateur pyrotechnique, encore appellé amorce, se compose le plus généralement, outre d'un alvéole métallique lui servant de carosserie, d'une composition pyrotechnique dite utile à base d'explosif primaire et d'un dispositif d'initiation proprement dit.The field of the present invention is that of pyrotechnic initiators with an electrical initiation device. A pyrotechnic initiator, also called a primer, is most generally composed, in addition to a metal cell serving as its body, a pyrotechnic composition called useful based on primary explosive and an initiation device proper.
La présente invention concerne plus particulièrement les initiateurs pyrotechniques électriques dont lé dispositif d'initiation utilise l'effet Joule. Sous l'effet d'un courant électrique dit de mise à feu envoyé par un dispositif extérieur dans une résistance, une quantité de chaleur est libérée provoquant la décomposition explosive de la charge pyrotechnique utile en contact avec la résistance.The present invention relates more particularly to electric pyrotechnic initiators whose initiation device uses the Joule effect. Under the effect of an electric current called firing sent by an external device into a resistor, an amount of heat is released causing the explosive decomposition of the useful pyrotechnic charge in contact with the resistor.
Parmi ces derniers on connaît principalement les amorces à fil et les amorces à composition conductrice.Among the latter are mainly known wire primers and primers with conductive composition.
Les amorces à fil utilisent comme élément chauffant des fils métalliques.résistifs au contact dans la charge pyrotechnique utile et soudés à chaques extrémités sur des électrodes. Cependant ces fils métalliques ne présentent pas une grande résistivité. L'augmentation de la résistance totale du fil exige soit une augmentation de longueur soit une diminution du diamètre du fil.The wire primers use as a heating element metallic wires which are resistive to contact in the useful pyrotechnic charge and welded at each end to electrodes. However, these metal wires do not have a high resistivity. Increasing the total resistance of the wire requires either an increase in length or a decrease in the diameter of the wire.
Mais l'augmentation de la longueur du fil est souvent impossible dans l'encombrement d'un initiateur et la diminution de son diamètre entraîne une fragilité prohibitive. De plus ces fils doivent être soudés sur les électrodes et cette soudure est une opération délicate et coûteuse et qui entraîne une fragilisation du fil.However, increasing the length of the wire is often impossible in the size of an initiator and reducing its diameter leads to prohibitive fragility. In addition, these wires must be welded to the electrodes and this welding is a delicate and costly operation and which leads to embrittlement of the wire.
En fait cette technologie simple du fil résistant est, adaptée aux initiateurs à faible résistance, celle-ci ne dépassant pas 10Ω, et aux fabrications de petites et moyennes séries.In fact, this simple resistance wire technology is suitable for low resistance initiators, this does not exceed 10Ω, and for small and medium series production.
Les amorces a compositions conductrices ne comportent pas d'élément chauffant indépendant, mais c'est la composition pyrotechnique elle-même qui est rendue conductrice, en général par -apport de graphite et qui conduit le courant électrique et s'échauffe directement par effet Joule.The primers with conductive compositions do not have an independent heating element, but it is the pyrotechnic composition itself which is made conductive, in general by means of graphite contribution and which conducts the electric current and is heated directly by the Joule effect. .
Ces amorces apportent l'avantage d'une résistance élevée, mais elles présentent des inconvénients.These primers provide the advantage of high strength, but they have drawbacks.
En premier lieu il est difficile de réaliser une homogénéité parfaite de la composition pyrotechnique conductrice, de sorte que lors de la fabrication en série, on.constate des écarts considérables entre les résistances électriques des différents échantillons de composition.Firstly, it is difficult to achieve perfect homogeneity of the conductive pyrotechnic composition, so that during mass production, considerable differences between the resistances are noted. the different composition samples.
Par ailleurs, un courant électrique parasite même relativement faible peut provoquer l'initiation accidentelle de ces amorces, ce qui peut s'expliquer par le fait que la résistance électrique de la composition pyrotechnique conductrice varie en fonction de l'énergie électrique qu'on lui applique.Furthermore, even a relatively weak parasitic electric current can cause accidental initiation of these primers, which can be explained by the fact that the electrical resistance of the conductive pyrotechnic composition varies as a function of the electrical energy that is given to it. applied.
L'initiateur pyrotechnique électrique à composition conductrice décrit dans le brevet français 78.26751 présente une sécurité et une fiabilité améliorée mais sa fabrication faisant intervenir le branchement d'une résistance en parallèle est plus complexe, d'autre part on obtient une résistance encore assez imprécise.The electric pyrotechnic initiator with conductive composition described in French patent 78.26751 has improved security and reliability but its manufacture involving the connection of a resistor in parallel is more complex, on the other hand, a resistance is still quite imprecise.
Le but de la présente invention est de réaliser un initiateur pyrotechnique électrique à dispositif d'initiation utilisant l'effet Joule dont la résistance électrique puisse atteindre une valeur de l'ordre de plusieurs dizaines ou même centaines d'ohms.The object of the present invention is to produce an electrical pyrotechnic initiator with an initiation device using the Joule effect, the electrical resistance of which can reach a value of the order of several tens or even hundreds of ohms.
En effet l'utilisation d'une résistance élevée permet d'une part d'augmenter la sensibilité et d'autre part d'obtenir une bien meilleure adaptation aux circuits de mise à feu comportant des résistances parasites et surtout des résistances de limitation du courant de court-circuit. L'affaiblissement dû à ces résistances additionnelles qui peuvent atteindre jusqu'à la qùinzaine d'ohms, diminue considérablement lorsque la résistance de l'élément chauffant s'élève au-dessus d'une cinquantaine d'ohms.In fact, the use of a high resistance makes it possible on the one hand to increase the sensitivity and on the other hand to obtain a much better adaptation to the firing circuits comprising parasitic resistances and especially resistors for limiting the current. short circuit. The attenuation due to these additional resistances which can reach up to about fifteen ohms, decreases considerably when the resistance of the heating element rises above about fifty ohms.
Un autre but est de réaliser un tel initiateur qui soit de fabrication simple, à faible coût, à bonne résistance mécanique et bien adaptée a la grande série, présentant une sécurité et une fiabilité de fonctionnement nettement améliorées par rapport aux amorces connues, c'est-à-dire dont la valeur de la résistance puisse être fixée avec précision.Another object is to produce such an initiator which is simple to manufacture, low cost, has good mechanical strength and is well suited to mass production, having significantly improved safety and operating reliability compared to known primers. that is, the value of the resistance can be set precisely.
Par ailleurs-on connaissait dans un autre secteur technique se rapportant à la technologie de fabrication des résistances pour circuits hybrides l'utilisation de résistance en couche épaisse constituée notamment d'encres conductrices déposées en couches polymérisées. Dans ces réalisations l'encre conductrice était utilisée à titre de résistance électrique proprement dite, désignée sous le vocable général de résistance en couche épaisse.Furthermore, we knew in another technical sector relating to the technology for manufacturing resistors for hybrid circuits the use of a thick layer resistor consisting in particular of conductive inks deposited in polymerized layers. In these embodiments the conductive ink was used as electrical resistance proper, designated under the general term of resistance in thick layer.
L'invention consiste à utiliser de telles encres conductrices comme dispositif d-initiation par chauffage par effet Joule de la charge pyrotechnique d'initiateur pyrotechnique. La fonction de la couche d'encre conductrice-est alors de dégager de la chaleur après mise sous tension électrique.The invention consists in using such conductive inks as an initiation device by Joule heating of the pyrotechnic charge of a pyrotechnic initiator. The function of the conductive ink layer is then to generate heat after electrical power is applied.
L'invention a en effet pour objet un initiateur pyrotechnique électrique comportant notamment une charge pyrotechnique et un dispositif d'initiation de la dite charge par chauffage par effet Joule contenus dans une enveloppe extérieure caractérisé en ce que l'élément chauffant consiste en une couche d'encre conductrice polymérisée placée au contact de la charge pyrotechnique et disposée en contact électrique avec deux électrodes.The subject of the invention is in fact an electrical pyrotechnic initiator comprising in particular a pyrotechnic charge and a device for initiating said charge by Joule heating contained in an outer envelope characterized in that the heating element consists of a layer of polymerized conductive ink placed in contact with the pyrotechnic charge and placed in electrical contact with two electrodes.
L'utilisation des encres conductrices connues dans la technologie des circuits hybrides, comme résistance chauffante permet d'obtenir une valeur précise et stable de la résistance assurant ainsi la sécurité et la reproductibilité de l'amorce. D'autre part en raison de la forte résistivité de ces encres et de la possibilité de régler la valeur de la résistance sur une large gamme dans les conditions d'encombrement imposées en modifiant la résistivité de la couche, on peut obtenir une résistance élevée, dans le cas présent par exemple de plusieurs dizaines à plusieurs centaines d'ohms.The use of conductive inks known in the technology of hybrid circuits, as a heating resistance makes it possible to obtain a precise and stable value of the resistance thus ensuring the safety and the reproducibility of the primer. On the other hand, due to the high resistivity of these inks and the possibility of adjusting the value of the resistance over a wide range under the space requirements imposed by modifying the resistivity of the layer, a high resistance can be obtained, in the present case, for example, from several tens to several hundred ohms.
Selon un mode de réalisation, l'initiateur pyrotechnique est caractérisé en ce que la couche d'encre conductrice est déposée sur un substrat en 'forme de-rondelle disposée sous la charge pyrotechnique, de telle sorte qu'elle soit en contact avec la-dite charge et avec deux électrodes consistant en deux couches de métallisation annulaires concentriques à la rondelle et prévues sur celle-ci.According to one embodiment, the pyrotechnic initiator is characterized in that the conductive ink layer is deposited on a substrate in form A washer disposed under the pyrotechnic charge, so that it is in contact with la- said charge and with two electrodes consisting of two annular metallization layers concentric with the washer and provided thereon.
L'amorce ainsi réalisée se révèle de conception simple de bonne résistance mécanique et de fabrication en grande série facile.The primer thus produced turns out to be of simple design with good mechanical resistance and of easy mass production.
Selon une autre caractéristique la couche d'encre conductrice est déposée par sérigraphie sur le support puis cuite au four et couverte enfin par une couche de passivation.According to another characteristic, the layer of conductive ink is deposited by screen printing on the support, then baked in the oven and finally covered by a passivation layer.
D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre, faite en référence aux dessins sur lesquels :
- - la figure 1 représente en vue en coupe longitudinale d'un initiateur selon l'invention pour cartouche de moyen calibre,
- - la figure 2 représente une vue du dessus du support de la couche d'encre conductrice.
- FIG. 1 is a longitudinal section view of an initiator according to the invention for a medium caliber cartridge,
- - Figure 2 shows a top view of the support of the conductive ink layer.
En référence à la figure 1, l'amorce conforme à l'invention comprend une enveloppe métallique extérieur 1, qui peut être par exemple en laiton, sensiblement cylindrique renfermant la charge pyrotechnique utile 2 de l'amorce dans sa partie supérieure. La charge pyrotechnique utile 2 est séparée de l'enveloppe extérieure par un godet 3 en laiton également dont le fond est muni d'une ouverture centrale 4. La charge pyrotechnique est recouverte par un paillet nitrafilm 5 protecteur qui comprime cette charge 2 vers la couche d'encre conductrice 6. Celle-ci est en effet en contact avec la charge utile 2 par l'ouverture centrale du fond du godet 3. La couche conductrice 6 est déposée sur un support céramique 7 en forme de rondelle déposé sous le godet 3.Referring to Figure 1, the primer according to the invention comprises an outer metal casing 1, which may be for example of brass, substantially cylindrical containing the useful pyrotechnic charge 2 of the primer in its upper part. The useful pyrotechnic charge 2 is separated from the outer casing by a brass bucket 3, the bottom of which is provided with a central opening 4. The pyrotechnic charge is covered by a
La charge pyrotechnique utile de l'amorce peut être constituée par exemple par une composition pyrotechnique à base de fulminate de mercure, de trinitrorésorcinate de plomb ou de l'azoture de plomb.The useful pyrotechnic charge of the primer can consist, for example, of a pyrotechnic composition based on mercury fulminate, lead trinitroresorcinate or lead azide.
Sur la figure 2 sont représentées les couches de métallisation 8 et 9 déposées sur le substrat 5 en céramique ou autre matière sur et entre lesquelles est déposée la couche d'encre conductrice 6: L'encre conductrice est avantageusement déposée par sérigraphie sur le substrat 7 puis l'ensemble est cuit au four puis reçoit une couche de passivation en l'espèce un vernis protection pour éviter l'oxydation.In FIG. 2 are shown the
On peut aussi utiliser les techniques classiques de vaporisation ou électrodéposition ou encore de gravure chimique pour le dépôt de la couche d'encre conductrice.One can also use conventional vaporization or electrodeposition techniques or chemical etching for the deposition of the conductive ink layer.
La technique du dépôt (sérigraphie et cuisson), l'encre conductrice composée notamment de mélanges de billes de verre ou de céramique et de métaux et oxydes métalliques, ainsi que le substrat (céramique) sont ceux utilisés pour les circuits hybrides. Mais les formes et les dimensions des éléments sont adaptés aux contraintes particulières des initiateurs en particulier au système d'électrodes.The deposition technique (screen printing and firing), the conductive ink composed in particular of mixtures of glass or ceramic beads and metals and metal oxides, as well as the substrate (ceramic) are those used for hybrid circuits. However, the shapes and dimensions of the elements are adapted to the particular constraints of the initiators, in particular to the electrode system.
Dans la partie inférieure de l'enveloppe métallique est placé un plot sertissable 10 qui est séparé de l'enveloppe extérieur 1 par godet un isolant Il. Le plot émerge en contact d'une part avec la charge pyrotechnique 2 par le vide central de la rondelle 7 et d'autre part déborde sur la couche annulaire 9. Le fond du godet 3 repose lui sur la couche de métallisation 8. Comme par ailleurs le godet Il isole électriquement ce plot 10 de l'enveloppe 1 et donc aussi du godet 3, les couches annulaires 8 et 9 constituent des électrodes lorsqu'un potentiel électrique est appliqué entre le plot 10 et le godet 3. Lorsqu'une source de tension est connectée entre le plot 10 et le godet 3 donc entre les deux électrodes 8 et 9 le courant traverse la résistance sérigraphiée 6 et provoque son échauffement par effet Joule. La chaleur est transmise par conductrice thermique dans la composition pyrotechnique 2 et provoque son initiation.In the lower part of the metal casing is placed a
L'amorce particulière décrite est destinée à l'allumage de la charge propulsive d'une munition de moyen calibre. On peut utiliser ce type d'amorce égalemcnt pour les tubes porte amorce de gros calibre, les détonateurs électriques pour fusée d'obus ou encore les inflammateurs pour missiles et roquettes.The particular primer described is intended for igniting the propellant charge of a medium caliber ammunition. This type of primer can also be used for large caliber primer tubes, electric detonators for shell rockets or igniters for missiles and rockets.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82401734T ATE21450T1 (en) | 1981-09-28 | 1982-09-27 | ELECTRIC BRIDGE DETECTORS FOR PYROTECHNIC CHARGES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8118191 | 1981-09-28 | ||
| FR8118191A FR2513751B1 (en) | 1981-09-28 | 1981-09-28 | ELECTRIC PYROTECHNIC INITIATOR WITH JOUL EFFECT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0076210A1 true EP0076210A1 (en) | 1983-04-06 |
| EP0076210B1 EP0076210B1 (en) | 1986-08-13 |
Family
ID=9262510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82401734A Expired EP0076210B1 (en) | 1981-09-28 | 1982-09-27 | Electric bridge-wire initiator for pyrotechnic charges |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0076210B1 (en) |
| AT (1) | ATE21450T1 (en) |
| DE (1) | DE3272594D1 (en) |
| FR (1) | FR2513751B1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143071A1 (en) * | 1983-11-18 | 1985-05-29 | Fela E. Uhlmann Aktiengesellschaft für gedruckte Schaltungen | Method for manufacturing an electric igniter, an igniter obtained thereby and its use |
| US4690056A (en) * | 1984-01-31 | 1987-09-01 | Dynamit Nobel Aktiengesellschaft | Electric detonator device |
| EP0717259A1 (en) * | 1994-12-14 | 1996-06-19 | Altech Industries (Pty) Limited | Detonators |
| EP1275931A1 (en) * | 2001-07-13 | 2003-01-15 | Snpe | Ignition device for small pyrotechnic charges |
| EP1418121A1 (en) * | 2002-11-06 | 2004-05-12 | Eaton Fluid Power GmbH | Emergency door actuator system |
| WO2008083937A1 (en) * | 2007-01-11 | 2008-07-17 | Rheinmetall Waffe Munition Gmbh | Primer element |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698687B1 (en) * | 1992-12-01 | 1995-02-03 | Giat Ind Sa | Pyrotechnic initiator. |
| RU2477450C1 (en) * | 2011-08-19 | 2013-03-10 | Открытое акционерное общество Новосибирский механический завод "Искра" | Device of module for programmable digital delay of nonelectric system explosion and its application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333538A (en) * | 1966-06-09 | 1967-08-01 | Hercules Inc | Electric initiator structure |
| US3426682A (en) * | 1967-04-27 | 1969-02-11 | Sidney A Corren | Exploding fuse |
| FR2090579A5 (en) * | 1970-04-24 | 1972-01-14 | Dynamit Nobel Ag | |
| BE840674A (en) * | 1976-04-13 | 1976-10-13 | PRIMER FOR ELECTRIC FIRE OF PROPULSIVE, EXPLOSIVE AND SIMILAR CHARGES | |
| GB2049651A (en) * | 1979-04-30 | 1980-12-31 | Brock Fireworks | Coating Surfaces with Explosive or Pyrotechnic Compositions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2305478A1 (en) * | 1975-03-25 | 1976-10-22 | Labo Electronique Physique | SCREENABLE PASTE FOR THICK LAYER CONDUCTORS TO BE DEPOSITED ON A CERAMIC SUBSTRATE AND PROCESS FOR PREPARING CONDUCTIVE LAYERS USING SUCH A PASTE |
| GB1565207A (en) * | 1975-09-05 | 1980-04-16 | Sinclair Radionics | Printed circuits |
| FR2436963A1 (en) * | 1978-09-19 | 1980-04-18 | France Etat | ELECTRIC PRIMER WITH CONDUCTIVE COMPOSITION |
-
1981
- 1981-09-28 FR FR8118191A patent/FR2513751B1/en not_active Expired
-
1982
- 1982-09-27 AT AT82401734T patent/ATE21450T1/en not_active IP Right Cessation
- 1982-09-27 DE DE8282401734T patent/DE3272594D1/en not_active Expired
- 1982-09-27 EP EP82401734A patent/EP0076210B1/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333538A (en) * | 1966-06-09 | 1967-08-01 | Hercules Inc | Electric initiator structure |
| US3426682A (en) * | 1967-04-27 | 1969-02-11 | Sidney A Corren | Exploding fuse |
| FR2090579A5 (en) * | 1970-04-24 | 1972-01-14 | Dynamit Nobel Ag | |
| BE840674A (en) * | 1976-04-13 | 1976-10-13 | PRIMER FOR ELECTRIC FIRE OF PROPULSIVE, EXPLOSIVE AND SIMILAR CHARGES | |
| GB2049651A (en) * | 1979-04-30 | 1980-12-31 | Brock Fireworks | Coating Surfaces with Explosive or Pyrotechnic Compositions |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143071A1 (en) * | 1983-11-18 | 1985-05-29 | Fela E. Uhlmann Aktiengesellschaft für gedruckte Schaltungen | Method for manufacturing an electric igniter, an igniter obtained thereby and its use |
| US4690056A (en) * | 1984-01-31 | 1987-09-01 | Dynamit Nobel Aktiengesellschaft | Electric detonator device |
| EP0717259A1 (en) * | 1994-12-14 | 1996-06-19 | Altech Industries (Pty) Limited | Detonators |
| EP1275931A1 (en) * | 2001-07-13 | 2003-01-15 | Snpe | Ignition device for small pyrotechnic charges |
| FR2827377A1 (en) * | 2001-07-13 | 2003-01-17 | Poudres & Explosifs Ste Nale | IGNITION DEVICE FOR PYROTECHNIC MICROCHARGES |
| US6666140B2 (en) | 2001-07-13 | 2003-12-23 | Snpe | Ignition device for pyrotechnic microcharges |
| EP1418121A1 (en) * | 2002-11-06 | 2004-05-12 | Eaton Fluid Power GmbH | Emergency door actuator system |
| WO2004041639A1 (en) * | 2002-11-06 | 2004-05-21 | Eaton Fluid Power Gmbh | Emergency door actuator system |
| US7690153B2 (en) | 2002-11-06 | 2010-04-06 | Eaton Corporation | Emergency door actuator system |
| WO2008083937A1 (en) * | 2007-01-11 | 2008-07-17 | Rheinmetall Waffe Munition Gmbh | Primer element |
| US8037825B2 (en) | 2007-01-11 | 2011-10-18 | Rheinmetall Waffe Munition Gmbh | Primer element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0076210B1 (en) | 1986-08-13 |
| FR2513751B1 (en) | 1986-04-11 |
| DE3272594D1 (en) | 1986-09-18 |
| ATE21450T1 (en) | 1986-08-15 |
| FR2513751A1 (en) | 1983-04-01 |
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