EP1328954B1 - Element de securite pyrotechnique - Google Patents

Element de securite pyrotechnique Download PDF

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Publication number
EP1328954B1
EP1328954B1 EP01988939A EP01988939A EP1328954B1 EP 1328954 B1 EP1328954 B1 EP 1328954B1 EP 01988939 A EP01988939 A EP 01988939A EP 01988939 A EP01988939 A EP 01988939A EP 1328954 B1 EP1328954 B1 EP 1328954B1
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EP
European Patent Office
Prior art keywords
housing
safety element
element according
activation
substance
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Expired - Lifetime
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EP01988939A
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German (de)
English (en)
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EP1328954A1 (fr
Inventor
Peter Dr. Lell
Rainer Mäckel
Thomas Schulz
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006—Opening by severing a conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff

Definitions

  • the invention relates to a pyrotechnic securing element having the features of the preamble of patent claim 1.
  • a possible field of application in motor vehicle technology is the defined irreversible disconnection of the on-board cabling from the car battery shortly after an accident, in order to avoid sources of ignition by sparks and plasma which arise, for example, if cable insulation has been scared off by body panels penetrating during the accident or loose cable ends against each other or press against sheet metal parts and scrub. If gasoline runs out in an accident at the same time, such ignition sources can ignite flammable gasoline-air mixtures that collect under the bonnet, for example.
  • Another application is the electrical separation of an assembly from the electrical system in the event of a short circuit in the relevant module, for example in an electric auxiliary heater.
  • pyrotechnic fuses are known, which are actively driven to trigger.
  • DE-AS 2,103,565 describes a circuit breaker which comprises a metallic housing which is connected at two spaced-apart terminal areas, each with a conductor end of a conductor to be protected.
  • a pyrotechnic element is provided, which is formed by an explosive charge.
  • the explosive charge is by an electric Igniter can be activated, which comprises an ignition element which is vaporized by a feed current.
  • the housing is filled with an insulating liquid.
  • the axially extending housing has a circumferential groove along which the housing ruptures when the explosive charge is ignited. The housing is thereby broken into two electrically separate parts, so that the relevant circuit is separated.
  • the plasma resulting from the disconnection of a circuit with a very high current is extinguished by the atomized insulating liquid in this circuit breaker.
  • it can be triggered, for example, by the signal of a shock sensor.
  • a self-ignition for the separation of the circuit in an overload of the conductor to be protected is not provided in this known device, because the entire sleeve would have to be heated to the ignition temperature and then a detonative implementation would not be reached safely. Because an explosive can hardly be ignited by simply heating the sleeve, i. be brought to the detonative implementation. However, this would be e.g. necessary in the housing form described in DE-AS 2,103,565.
  • a fuse is known in which the current to be protected is passed over a filled with an exothermic reactive material fuse element wherein the wall of the fuse element bursts by activating the exothermic reactive material and interrupts the power.
  • exothermic reactive material is z.b. PETN used, so a detonative material converting, so that such a fuse is subject to strict licensing requirements.
  • the activation of the exothermic reactive material can be done by the heat loss of the current to be hedged itself or by an active ignition device.
  • rupturing the housing of the fuse element would occur with a slower burning material, e.g. a so-called propellant powder, undefined and unclean done. So there is a risk that initially only cracks or holes in the fuse element and the remaining wall material must be melted through the current to be protected. This affects the reaction speed of the fuse and is also not allowed for reasons of reliability.
  • the housing of the securing element between two cross-sectional jumps in the thickness of the housing wall on a circumferential weakening of its outer wall.
  • the weakening is designed in such a way that the entire web forming the weakening between the two cross-sectional jumps is sheared off on both sides after activation of the deflagrating pyrotechnic substance and pressed outwards.
  • the weakening may additionally be designed so that the current flowing through the fuse in the region of the weakening, which has an increased resistance, generates such a large power loss that, when a predetermined current is exceeded, a self-ignition of the deflagrating material is achieved specifically at this point, without having to heat the fuse element as a whole. Thus, the heating is also done quickly, as desired.
  • a corresponding embodiment may for this purpose comprise a housing of a substantially hollow cylinder-shaped or pot-shaped part, the two end-side openings or its one end opening are closed by means of a substantially plug-like or cap-like closure member.
  • the region within the cross-sectional jumps may have structures on the inside and / or outside, which generate notch effects and support bursting or breaking up of the region into a multiplicity of small parts.
  • a thread may be provided on the inside. This is a very cost effective way of producing such a structure.
  • the deflagrating pyrotechnic material provided in the housing may be penetrated by an electrical conductor which is connected at each of its two ends to one of the terminal regions, wherein the conductor is formed such that by heating it at a predetermined nominal current of the pyrotechnic Fabric is activated.
  • the conductor is preferably such in terms of its resistance that when the rated current flows, which in this case is divided between the housing and the conductor, at least the conductor reaches the ignition temperature for the pyrotechnic substance.
  • the activation device for the controlled ignition of the pyrotechnic substance may also comprise a controlled electrically energized electrical conductor. This can be isolated with one or both ends led out of the housing. If only one end is led out, then the other end of the conductor is connected to a connection region of the housing. The ignition current for the conductor is then diverted from the total current flowing through the fuse element.
  • the deflagrating pyrotechnic substance comprises a first component having a higher activation temperature and a second component having a lower activation temperature.
  • the first component may have a sufficient aging resistance for the desired functionality duration and may be dimensioned and designed such that upon activation of the first component, this alone is sufficient to interrupt the electrical connection between the connection regions.
  • Fig. 1 shows schematically the basic structure of a first embodiment of a pyrotechnic fuse element.
  • This consists of a housing 1, preferably in the form of a metal tube, which is simply squeezed in its end regions 2.
  • a housing 1 In the end 2 cross holes can be provided to screw the fuse element to a busbar or unscrew cable lugs there.
  • the end regions 2 thus form connection regions for a circuit to be protected or the ends of a conductor to be protected.
  • the housing 1 is completely or partially, loosely or pressed with a deflagrierenden pyrotechnic substance 3, preferably a propellant charge powder filled. At least parts of the inner walls of the housing 1 are in thermal contact with the pyrotechnic substance. 3
  • the nip in the end regions 2 is sealed by a material 27 against external influences, in particular against penetrating moisture and water vapor
  • the pyrotechnic substance may consist of one or more components.
  • a component with low ignition temperature or low activation energy used to ignite another (main) component the combustion gases then ultimately destroy the housing.
  • This makes it possible to ignite the mixture already at very low temperatures and thus optimally load a cable to be protected with the security element.
  • a substance can be selected which ignites only at very high temperatures. This is particularly advantageous because such substances usually have a very high resistance to aging. The ignitability of the mixture can therefore be ensured even with long-term and / or relatively high heating of the housing 1.
  • FIG. 2 shows an embodiment similar to FIG. 1, with an additional electrical conductor 4, for example a wire or a band core, being passed through the pyrotechnic substance 3.
  • the conductor 4 is connected to the end regions 2 of the housing 1.
  • the conductor 4 is dimensioned in terms of its resistance so that when flowing the rated current via the parallel circuit of the current path via the housing 1 and the conductor 4, the conductor 4 reaches a temperature sufficient to ignite the substance 3. Due to the lower compared to the housing mass of the conductor 4, such a fuse element has a lower inertia with respect to the time delay between reaching the rated current and the activation time of the substance 3. After destroying the housing, the conductor 4 remains at least for a short time as a current path.
  • the conductor melts or burns through. If a heat-resistant material, eg tungsten, is selected for the conductor, or if the voltage in the circuit to be protected is correspondingly low, then the conductor remains permanently in the circuit and serves as a current limiting resistor.
  • the housing 1 bursts in this case so overload, so that so the low-current current path has been destroyed, which had allowed the high short-circuit currents and it remains a relatively high-impedance current path, for example, for further supply of low-energy-consuming safety devices such as emergency lighting, cellular phone, etc.
  • Fig. 3 shows a further embodiment of a pyrotechnic fuse element, in which additionally a controllable ignition function is provided.
  • a circumferential weakening 5 is provided in the outer wall of the housing 1. This makes it possible to control the manner of destroying the housing 1 and at the same time its self-heating during passage of current.
  • the housing 1 will also heat more strongly in this area than in areas with a thicker outer wall.
  • the weakening 5 that the housing is torn in the weakening 5.
  • FIG. 3 furthermore shows a controllable activation device 23, which implements the controllable ignition function. It consists of a conductor 23a, which may be formed, for example, as a glow wire and has power connections 16 and 19. The two power connections are guided via the insulating bushes 17 and 18 to the outside. The insulating bushes 17 and 18 are also designed self-sealing, so prevent self-locking the pressure drop here during pressure build-up in the housing 1 after the ignition of the pyrotechnic substance. 3
  • Fig. 4 shows an embodiment similar to Fig. 3. Shown here is a different shape of the conductor 23 a.
  • the conductor 23a can also be of any desired shape, for example also as single or multiple helical loops or the like.
  • connection region 2 is connected to one end of the conductor 23a, so that only one leadthrough and only one external connection for the internal glow wire remains. In this way, either a part of the current supplied to the protection element branched off and used for ignition by means of the conductor 23a or it is introduced via the lead-out end of the conductor 23a, an additional ignition current.
  • Fig. 4 additionally shows a structure in the inner wall of the housing 1, the object of which is to increase the contact surface of the housing wall with the pyrotechnic substance 4 and thus also to increase the ignition probability.
  • Fig. 5 shows the embodiment of a fuse element according to Fig. 1, wherein additionally a protective housing 7 is provided schematically.
  • the protective housing 7 protects the environment of the fuse element from flying outward splinters or gas or gas / particle mixture emitted to the outside.
  • the protective housing 7 can be omitted if the fuse element is installed in a higher-level housing, for example in the housing of a fuse box or a central electrical system.
  • the protective housing 7 can be made of a hard but impact-resistant and current-insulating material or of a soft, but for fast small particles plastically acting plastic in which these particles are then buried and thus "disposed of".
  • FIG. 6 shows in FIGS. 6a and 6b two further embodiments which are suitable for applications in which at least one cable connection can move axially.
  • These embodiments have a housing 1, which is formed in two parts and consists of the parts 9 and 40.
  • the housing parts 9, 40 each have a connection region 2.
  • the pyrotechnic substance 3 is arranged in the housing part 40.
  • a weakening of the outer wall may be provided in the housing part 40.
  • the pyrotechnic substance 3 ignites.
  • a clinch 12 becomes, besides the connection of the two housing parts, the function of a barrier for the pyrotechnic Fabric 3 has loosened and both housing parts are pressed apart. The circuit is interrupted in this way.
  • a sealing system 11 may be provided for sealing for the non-activated state.
  • the seal for the activated state assumes in each case a self-adhesive sealing lip 14 of the housing part 9, so that the housing parts are self-sealing here.
  • transverse bores 8 may be provided in the two end regions or Anschlußballons 2 of the housing parts 9, 40 transverse bores 8 may be provided.
  • the fuse element can be screwed to a power rail or simply flanged a cable lug with an industrial cable.
  • at least one of the two terminal portions 2 must be connected to an electrical conductor so that a pressing apart of the housing parts 9, 40 is possible and also preferably a re-touching of the housing parts is prevented after triggering.
  • Fig. 6a shows a spring element 24, which serves to bias the housing parts.
  • a spring element 24 which serves to bias the housing parts.
  • less pyrotechnic substance is required.
  • lower gas pressure is required. Consequently, a lesser force of the divergence of the two housing parts 9, 40 is achieved when the fuse element is triggered.
  • FIG. 6b again shows an electrical conductor 4 which is connected to the connection region 2 of the housing part 40 and the housing part 9. It fulfills the function already explained above in connection with FIG. Unlike the embodiment of FIG. 2, however, it will tear off when the fuse element is triggered, if it is only as short as shown in FIG. 6 b, or simply pulled out of contacting bushings 25.
  • the wire must be coiled here, so that it can stretch when moving apart of the two housing parts and does not crack.
  • FIG. 7 shows sections of longitudinal sections through the outer wall of the housing 1 of any embodiment in the region of the weakenings 5.
  • a longitudinally triangular weakening according to FIG. 7a or a plurality of triangular weakenings according to FIGS. 7c and 7d bring about a moderate heating when the current passes through.
  • the housing 1 ruptures at the point with the largest jump in the cross section very clean and complete.
  • the multiple weakenings according to FIGS. 7c and 7d serve to influence the turn-off characteristic of the fuse element:
  • the decisive factors here are the heat capacity of the less weakened central part, as well as the number, the distance, the depth and length of the individual weakenings. Depending on the prevailing conditions, parts of the housing will therefore heat up more or less quickly with otherwise the same flow of current and more or less quickly reach the ignition temperature of the pyrotechnic substance.
  • the housing 1 essentially comprises a hollow-cylindrical part 1b.
  • plug-like closure elements 1a are arranged, which seal the end-side openings of the hollow cylindrical part 1b tight.
  • the parts 1a can also be made of insulating Material, such as plastic.
  • the front ends of the hollow cylindrical part 1 b are bent so that the parts 1 a are held positively in the hollow cylindrical part.
  • projections 1c can be provided in the inner wall of the hollow cylindrical part 1b in order to fix the parts 1a in a form-fitting manner.
  • the inwardly directed end faces of the parts 1a may be formedsabêtnd, for example, have a sealing lip which extends from the respective end face inwards and which under the pressure of the pyrotechnic material 3, which is introduced between the parts 1a in the housing 1 is applied to the inner wall of the part 1b.
  • the securing element according to FIG. 8 is designed such that the cylindrical connecting regions can be received in corresponding receptacles of a securing receiving element (not shown) and thus contacted.
  • the Ausflihrungsform of FIG. 8 also shows a conductor 23, which allows a controllable ignition of the fuse element in the manner described above.
  • FIG. 9 shows a representation in longitudinal section of a further embodiment of a securing element with a protective housing in which the housing parts separated after triggering of the securing element can be axially displaced.
  • the housing 1 of the actual fuse element which may consist of a conductive material, such as graphite, carbon, a conductive plastic or metal or coated with metals materials such as carbon, graphite or plastic, is substantially cylindrical and closed at one end.
  • deflagrating pyrotechnic substance 3 is provided in a central bore 60 in a central bore 60 .
  • a receiving opening 62 is provided for a closure (not shown), which closes the housing 1 pressure-tight in the receiving opening and an activation device, not shown, may be added to activate the deflagrating substance controlled.
  • a thread (not shown) may be screwed, which extends in particular in the region of the circumferential weakening 5 in the wall of the housing 1.
  • the thread represents a structure with a corresponding notch effect, whereby upon activation of the deflagrating material, the wall in the region of the circumferential weakening completely ruptures and breaks up into nothing but small fragments.
  • a corresponding structure for generating notch effects can of course also be provided in the outer wall of the circumferential weakening, for example by erosive machining of the surface.
  • housing 1 By using highly conductive and brittle materials for the housing, but at least for the circumferential weakening, can be produced housing 1, which tear open even at low internal pressures, with the material of the broken circumferential weakening decomposed into a large number of small pieces. Due to the relatively high resistivity of materials such as graphite or carbon ignitions of the deflagrating substance can be realized even at relatively low, flowing through the housing streams. In this case, the outer surface of the housing not used for the web can definitely be covered in particular with a thick Kufper für and thus further guarantee a very low total resistance of the fuse element.
  • the housing 1 is surrounded by a protective housing 7, which serves for catching the fragments of the tearing circumferential weakening 5 as well as the resulting gas, thus precluding damage or injury to neighboring objects or persons.
  • the housing 1 has circumferential grooves 64, 66, which protrude through recesses in the end faces of the protective housing 7. Each adjacent to the outsides of the end walls Shoulders of the grooves 64, 66 serve for the axial fixation of the housing 1 in the protective housing 7 and are in the initial state at the end walls.
  • the protective housing may be made of plastic, in particular polycarbonate, and be formed in one piece or in several parts.
  • the protective housing 7, as shown in Fig. 9, be surrounded by a bent around the end faces of the protective housing or flanged pipe 68, which may for example consist of metal.
  • a heat-shrinkable tube 70 or a comparable insulation can be applied over the metal tube.
  • the circumferential weakening over the entire circumference is torn open by the generated gas pressure. Due to the axial mobility of the resulting parts of the housing 1 on both sides of the circumferential weakening 5 also arise tensile stresses that favor the rupture of the circumferential weakening 5. After complete rupture of the weakening 5, the two separated parts of the housing 1 move in the protective housing 7 axially maximally so far outward until the inner sides of the end walls of the protective housing 7 abut the inside stop shoulders of the grooves 64, 66.
  • a substantially symmetrical design of the housing 1 also allows a symmetrical design of the protective housing 7, whereby sources of error in the assembly of the entire unit are excluded.
  • a structure 72 for collecting the parts of the torn circumferential weakening 5 is provided on the inner wall of the protective housing 7.
  • the structure 72 may be formed integrally with the protective housing 7 or be realized by additional material and / or an additional part.
  • circumferential splines are suitable, since the radially outwardly thrown parts of the torn circumferential weakening wedged in the radially outwardly tapering grooves and thus no longer can cause unwanted contact after activating the fuse.
  • FIG. 9 can also be realized with a circumferential weakening in the form of a keyway.
  • a circumferential weakening in the form of a keyway.
  • practically no self-ignition of the deflagrating substance is possible since the loss heat generated in the weakening by the immediately adjacent areas of the housing and the zero axial expansion of the circumferential weakening (at the lowest point, which is essentially the electrical resistance defined) is discharged immediately.

Abstract

L'invention concerne un élément de sécurité pyrotechnique comprenant un carter fermé en un matériau électro-conducteur, à l'intérieur duquel il est prévu de loger une matière explosive, caractérisé en ce que le carter présente deux zones de connexion pour le contact électrique, qui sont reliées électriquement par le matériau électro-conducteur du carter, en ce que la connexion électrique des zones de connexion peut être séparée par activation de la matière explosive, et en ce que la matière explosive est constituée par une substance pyrotechnique déflagrante qui est dimensionnée et configurée de telle façon que la connexion électrique des zones de connexion du carter est séparée, dans un temps prédéterminé, après une activation de la substance pyrotechnique déflagrante.

Claims (14)

  1. Elément de sécurité pyrotechnique comprenant :
    a) un boîtier fermé en matériau électriquement conducteur (1) qui contient une substance explosive (3),
    b) dans lequel le boîtier comprend deux zones de connexion (2) pour mise en contact électrique, qui sont connectées électriquement au moyen du matériau électriquement conducteur du boîtier (1),
    c) dans lequel on peut séparer la connexion électrique des zones de connexion (2) en activant la substance explosive (3), et
    d) dans lequel le matériau explosif (3) se présente sous la forme d'une substance pyrotechnique déflagrante, qui est dimensionnée et conformée de manière à séparer la connexion électrique des zones de connexion (2) du boîtier (1) dans une période de temps prédéterminée après une activation de la substance pyrotechnique déflagrante (3),
    caractérisé en ce que
    e) le boîtier (1) comprend une zone d'affaiblissement (5) ménagée entre deux sauts de section transversale dans l'épaisseur de la paroi du boîtier et s'étendant sur toute la périphérie de sa paroi externe, et
    f) la zone d'affaiblissement (5) est conformée de sorte que l'ensemble de la nervure formant la zone d'affaiblissement (5) entre les deux sauts de section transversale soit cisaillé sur les deux côtés après activation de la substance pyrotechnique déflagrante (3) et pressé vers l'extérieur.
  2. Elément de sécurité selon la revendication 1, caractérisé en ce que l'extension axiale de la zone du boîtier (1) présentant une épaisseur de paroi moindre est supérieure à zéro, de préférence supérieure à 1 mm et inférieure à 5 mm.
  3. Elément de sécurité selon la revendication 2, caractérisé en ce que l'épaisseur de paroi dans la zone de l'affaiblissement (5) est inférieure à la moitié de l'épaisseur de paroi des zones voisines de la zone d'affaiblissement (5) et est de préférence constante.
  4. Elément de sécurité selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la zone d'affaiblissement périphérique (5) de la paroi externe est conformée de sorte que le flux de courant sur le boîtier (1) existant dans des zones prédéterminées à un niveau de courant théorique prédéterminé permet d'obtenir une température d'activation prédéterminée pour la substance pyrotechnique déflagrante (3).
  5. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que la substance pyrotechnique déflagrante (3) et le boîtier (1) sont agencés de manière à garantir à une puissance de courant théorique prédéterminée, une activation fiable de la substance pyrotechnique (3) par chauffage du boîtier (1), de préférence dans des zones prédéterminées.
  6. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu un boîtier de protection (7) qui est conformé de manière que les éclats formés lors de l'éclatement de la paroi du boîtier (1) soient récupérés et/ou que le gaz ou le mélange de gaz et de particules formé lors de l'activation de la substance pyrotechnique déflagrante (3) soit absorbé.
  7. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier (1) comprend une partie ayant sensiblement la forme d'un cylindre creux ou d'un pot dont les deux ouvertures frontales ou dont l'unique ouverture frontale sont ou est fermée (s) au moyen d'un élément de fermeture (Ia) sensiblement en forme de bouchon ou de capuchon.
  8. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier (1) est entouré d'un boîtier de protection (7) et en ce qu'au moins une partie du boîtier (1) est maintenue, sur un côté de la zone d'affaiblissement périphérique (5), de manière à pouvoir être déplacée axialement dans le boîtier de protection (7), dans lequel la au moins une partie du boîtier (1) présente sur sa périphérie externe des moyens de butée qui limitent le déplacement axial du boîtier après un éclatement de la zone d'affaiblissement périphérique et dans lequel sont de préférence formés des moyens de retenue (64, 66) qui fixent la au moins une partie après que celle-ci a effectué un déplacement axial.
  9. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que la substance pyrotechnique déflagrante (3) pourvue dans le boîtier (1) est traversée par un conducteur électrique (23), qui est connecté, à ses deux extrémités, respectivement, à une des zones de connexion (2), le conducteur (23) étant conformé de manière que son chauffage à un courant théorique prédéterminé entraîne l'activation de la substance pyrotechnique (3).
  10. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins dans des zones partielles de la paroi interne du boîtier (1), qui sont en contact avec la substance pyrotechnique déflagrante (3), il est prévu, de préférence dans la zone d'affaiblissement périphérique (5), des structures (72) qui agrandissent la surface en contact efficace avec la substance pyrotechnique (3) et/ou qui sont conformées de sorte que, dans des zones prédéterminées, de préférence aux coins ou aux arêtes, il apparaisse des températures localement plus élevées et/ou des tensions d'entaillage qui facilitent la destruction de la zone d'affaiblissement périphérique (5) et produisent des fragments plus petits.
  11. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu un dispositif d'activation actionnable pour la substance pyrotechnique déflagrante (3).
  12. Elément de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que la substance pyrotechnique déflagrante (3) comprend un premier composant, qui présente une température d'activation plus élevée, et un deuxième composant, qui présente une température d'activation plus basse.
  13. Elément de sécurité selon la revendication 12, caractérisé en ce qu'au moins le premier composant présente une résistance au vieillissement suffisante pour la durée de fonctionnement souhaitée et est dimensionné et conformé de sorte que, lors d'une activation du premier composant, cela suffise seulement à interrompre la connexion électrique entre les zones de connexion (2).
  14. Elément de sécurité selon la revendication 12 ou 13, caractérisé en ce que la température d'activation du premier composant est plus élevée et la température d'activation du second composant est plus basse que la température que permettent d'obtenir au moins des zones partielles du boîtier (1) à la puissance de courant théorique ou le dispositif d'activation.
EP01988939A 2000-10-23 2001-10-23 Element de securite pyrotechnique Expired - Lifetime EP1328954B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10052545A DE10052545A1 (de) 2000-10-23 2000-10-23 Pyrotechnisches Sicherungselement
DE10052545 2000-10-23
PCT/DE2001/004016 WO2002035568A1 (fr) 2000-10-23 2001-10-23 Element de securite pyrotechnique

Publications (2)

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EP1328954A1 EP1328954A1 (fr) 2003-07-23
EP1328954B1 true EP1328954B1 (fr) 2006-05-31

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EP01988939A Expired - Lifetime EP1328954B1 (fr) 2000-10-23 2001-10-23 Element de securite pyrotechnique

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US (1) US6954132B2 (fr)
EP (1) EP1328954B1 (fr)
JP (1) JP2004512645A (fr)
AU (1) AU2002220501A1 (fr)
DE (2) DE10052545A1 (fr)
WO (1) WO2002035568A1 (fr)

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Publication number Priority date Publication date Assignee Title
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DE10052545A1 (de) 2002-05-02
JP2004512645A (ja) 2004-04-22
WO2002035568A1 (fr) 2002-05-02
AU2002220501A1 (en) 2002-05-06
US20040113745A1 (en) 2004-06-17
DE50109978D1 (de) 2006-07-06
EP1328954A1 (fr) 2003-07-23
US6954132B2 (en) 2005-10-11

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