EP0370860A1 - Fireworks element - Google Patents

Fireworks element Download PDF

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Publication number
EP0370860A1
EP0370860A1 EP89403113A EP89403113A EP0370860A1 EP 0370860 A1 EP0370860 A1 EP 0370860A1 EP 89403113 A EP89403113 A EP 89403113A EP 89403113 A EP89403113 A EP 89403113A EP 0370860 A1 EP0370860 A1 EP 0370860A1
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EP
European Patent Office
Prior art keywords
sheet
pyrotechnic
grains
element according
folded
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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Application number
EP89403113A
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German (de)
French (fr)
Inventor
Jean-Pierre Chastel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruggieri SA
Original Assignee
Ruggieri SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ruggieri SA filed Critical Ruggieri SA
Publication of EP0370860A1 publication Critical patent/EP0370860A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes

Definitions

  • the invention relates to pyrotechnic fireworks intended to be suspended above the ground in order to form a cascade on burning.
  • Pyrotechnic devices of this type comprising grains of pyrotechnic material embedded in a mechanical binder constituting at the same time means for igniting the grains. These grains have a size depending on the desired burning time.
  • the binder is in the form of a bread wrapped in an open envelope at the end intended to face the ground. The opposite end of the envelope is connected to a device allowing the suspension of the device on, for example, a structure.
  • These devices can be provided with an ignition charge consisting of a flammable composition which can be triggered either by an electric initiator allowing the remote triggering of a device or by a conventional wicking system.
  • the object of the invention is to propose a pyrotechnic firework element which is easy to manufacture and which is considerably less expensive than the known fireworks elements.
  • the subject of the invention is a pyrotechnic firework element intended to be suspended above the ground, comprising ignition means and grains of pyrotechnic material of a size which is a function of their required average burning time, characterized in that the grains are packaged in a package consisting of at least one paper sheet, the grains being spread on said sheet and held in place by retaining means, and in that said sheet also constitutes the delivery means fire.
  • the sheet is folded back on itself in an accordion.
  • the sheet is wound on itself in a spiral.
  • the sheet is, at its end intended to be turned upward, provided with connecting means intended to maintain it in its folded or wound state.
  • the means for retaining the grains on the sheet consist of a layer of a combustible adhesive product applied to at least one of the faces of the sheet.
  • the means for retaining the grains on the sheet consist of the very wall of the sheet in its folded or rolled up state.
  • the sheet is, at its end intended to be turned downward, provided with an ignition layer extending along the edge of the sheet over at least part of the length thereof.
  • At least one of the lateral ends of the sheet is extended in order to form an envelope which surrounds the element and which forms a continuous protective surface.
  • the pyrotechnic element comprises a single sheet of paper 1 to which a combustible adhesive product is applied, for example a viscous nitrocellulose solution, forming a thin adhesive layer.
  • This adhesive layer constitutes means for retaining grains 2 of pyrotechnic material which are regularly spread over the sheet 1.
  • the grains are, according to an alternative embodiment, coated with a combustible adhesive product before being spread over the sheet which can then do not itself have a layer of adhesive.
  • the sheet 1 is, in its part intended to be directed upwards, now called the upper part, provided with an adhesive tape 3 extending along the corresponding edge of the sheet and overlapping a part of the external face of it. this.
  • This tape can naturally also be placed on the internal face of the sheet which can also be provided with a second adhesive tape placed at the opposite end of the sheet.
  • a stiffening element in the form of a cardboard tape 4 is advantageously fixed to the upper part of the sheet.
  • This stiffening element extends parallel to the adhesive tape over part of its length and can be pierced with one or more holes intended to receive a string or other fastening device for the suspension of the element above ground.
  • the sheet is, in its part intended to be directed downwards, henceforth called the lower part, provided with a layer of an ignition material 5 arranged near the corresponding edge and preferably extending over the entire length of this one.
  • the sheet 1 forming a support for the grains 2 is folded on itself in an accordion.
  • the folded parts of the sheet are held against each other using the adhesive tape 3.
  • the sheet 1 is wound in a spiral on itself and kept wound with the aid of the adhesive tape 3.
  • This tape can moreover be replaced by another connecting means suitable such as glue or rivets.
  • the device can, as already mentioned, be provided with a second adhesive tape disposed at the lower end of the sheet in order to better hold together the folded or rolled up parts of the sheet.
  • two flat sheets are arranged one against the other and fixed to each other at at least their upper end by an adhesive tape.
  • fireworks can be made from paper ribbons which are then cut to suitable lengths.
  • the means for retaining the pyrotechnic grains 2 between the sheet parts 1 folded and retained against one another, or in a sheet wound on itself, or else between two sheets flat, can advantageously be formed by the very wall of the sheet in the case where this wall is relatively rigid so as to be able to form a compact firework element in which the parts of the sheet are urged against each other during folding or roll up the sheet. In this case, no adhesive is required.
  • the sheet can advantageously be a sheet of embossed paper.
  • the grains are, in this case, held captive in cells which are formed when the sheet is folded or rolled up on itself or when several sheets are superimposed on each other.
  • At least one of the side ends of the sheet according to the embodiment illustrated in Figures 2 and 3 can be extended to form an envelope which surrounds the folds and which forms a continuous protective surface.
  • such an envelope is automatically formed when the sheet is wound on itself.
  • the operation of the pyrotechnic firework element is simple.
  • the element is suspended at a certain height above ground level and the layer of ignition material is ignited.
  • the leaf is thus ignited and burns while releasing the grains which are successively lit and fall towards the ground, developing the required light intensity.
  • the grains thus form a cascade of fire as they fall.
  • the pyrotechnic firework element according to the invention is easy to manufacture since it can be formed by a single sheet of paper folded or rolled up on itself and its cost price is thus extremely low.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Buffer Packaging (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The fireworks element is of the type intended to be suspended above the ground. It comprises grains of a pyrotechnic substance (2), whose size is according to their average required combustion time, set in packaging consisting of at least one sheet of paper (1). The grains (2) are spread over and held on the surface of the sheet which also constitutes means of igniting them. The sheet (1) is folded or rolled up on itself and is provided at the top with an adhesive tape (3) intended to hold the sheet in its folded or rolled condition. The fireworks element comprises at the bottom a coating (5) for setting it alight and at the top a stiffening tape (4). <IMAGE>

Description

L'invention concerne les artifices pyrote­chniques de divertissement destinés à être suspendus au-dessus du sol afin de former une cascade en brû­lant.The invention relates to pyrotechnic fireworks intended to be suspended above the ground in order to form a cascade on burning.

On connaît des artifices pyrotechniques de ce type comportant des grains de matière pyrotechnique noyés dans un liant mécanique constituant en même temps des moyens de mise à feu des grains. Ces grains ont une dimension fonction de la durée de combustion désirée. Le liant est en forme de pain emballé dans une enveloppe ouverte à sont extrémité destinée à être tournée vers le sol. L'extrémité opposée de l'envelop­pe est reliée à un dispositif permettant la suspension de l'artifice sur par exemple une structure.Pyrotechnic devices of this type are known comprising grains of pyrotechnic material embedded in a mechanical binder constituting at the same time means for igniting the grains. These grains have a size depending on the desired burning time. The binder is in the form of a bread wrapped in an open envelope at the end intended to face the ground. The opposite end of the envelope is connected to a device allowing the suspension of the device on, for example, a structure.

Ces artifices peuvent être pourvus d'une charge d'allumage constituée d'une composition inflam­mable qui peut être déclenchée soit par un initiateur électrique permettant le déclenchement à distance d'un artifice ou par un système classique de méchage.These devices can be provided with an ignition charge consisting of a flammable composition which can be triggered either by an electric initiator allowing the remote triggering of a device or by a conventional wicking system.

L'invention a pour but de proposer un élé­ment d'artifice pyrotechnique qui est facile à fabri­quer et que est nettement moins cher que les éléments d'artifice connus.The object of the invention is to propose a pyrotechnic firework element which is easy to manufacture and which is considerably less expensive than the known fireworks elements.

L'invention a pour objet un élément d'arti­fice pyrotechnique destiné à être suspendu au-dessus du sol, comportant des moyens de mise à feu et des grains de matière pyrotechnique d'une taille qui est fonction de leur durée de combustion moyenne requise, caractérisé en ce que les grains sont conditionnés dans un emballage constitué d'au moins une feuille en papier, les grains étant étalés sur ladite feuille et retenus en place par des moyens de retenue, et en ce que ladite feuille constitue également les moyens de mise à feu.The subject of the invention is a pyrotechnic firework element intended to be suspended above the ground, comprising ignition means and grains of pyrotechnic material of a size which is a function of their required average burning time, characterized in that the grains are packaged in a package consisting of at least one paper sheet, the grains being spread on said sheet and held in place by retaining means, and in that said sheet also constitutes the delivery means fire.

Selon d'autres caractéristiques de l'inven­tion :
- la feuille est repliée sur elle-même en accordéon.
- la feuille est enroulée sur elle-même en spirale.
- la feuille est, à son extrémité destinée à être tournée vers le haut, pourvue de moyens de liai­son destinés à la maintenir dans son état plié ou enroulé.
- les moyens de retenue des grains sur la feuille sont constitués par une couche d'un produit adhésif combustible appliqué sur au moins l'une des faces de la feuille.
- les moyens de retenue des grains sur la feuille sont constitués par la paroi même de la feuil­le dans son état plié ou enroulé.
- la feuille est, à son extrémité destinée à être tournée vers le bas, pourvue d'une couche d'allu­mage s'étendant le long du bord de la feuille sur au moins une partie de la longueur de celle-ci.
- au moins l'une des extrémités latérales de la feuille est prolongée afin de former une enveloppe qui entoure l'élément et qui forme une surface conti­nue de protection.According to other characteristics of the invention:
- the sheet is folded back on itself in an accordion.
- the sheet is wound on itself in a spiral.
- The sheet is, at its end intended to be turned upward, provided with connecting means intended to maintain it in its folded or wound state.
- The means for retaining the grains on the sheet consist of a layer of a combustible adhesive product applied to at least one of the faces of the sheet.
the means for retaining the grains on the sheet consist of the very wall of the sheet in its folded or rolled up state.
- The sheet is, at its end intended to be turned downward, provided with an ignition layer extending along the edge of the sheet over at least part of the length thereof.
- At least one of the lateral ends of the sheet is extended in order to form an envelope which surrounds the element and which forms a continuous protective surface.

L'élément d'artifice pyrotechnique suivant l'invention sera maintenant décrit plus en détail en référence aux dessins annexés sur lesquels :

  • - La figure 1 est une vue en plan d'un élé­ment d'artifice développé ;
  • - Les figures 2 et 3 sont des vues schémati­ques en perspective et d'extrémité d'un élément d'ar­tifice suivant un premier mode de réalisation de l'in­vention ;
  • - Les figures 4 et 5 sont des vues schémati­ques en perspective et d'extrémité d'un élément d'ar­tifice suivant un second mode de réalisation de l'in­vention.
The pyrotechnic firework element according to the invention will now be described in more detail with reference to the accompanying drawings in which:
  • - Figure 1 is a plan view of a developed firework element;
  • - Figures 2 and 3 are schematic perspective and end views of a device according to a first embodiment of the invention;
  • - Figures 4 and 5 are schematic perspective and end views of a device according to a second embodiment of the invention.

Selon les modes de réalisation illustrés sur les figures, l'élément pyrotechnique comporte une seu­le feuille en papier 1 sur laquelle est appliqué un produit adhésif combustible, par exemple une solution visqueuse nitrocellulose, formant une couche adhésive mince. Cette couche adhésive constitue des moyens de retenue de grains 2 de matière pyrotechnique qui sont régulièrement étalés sur la feuille 1. Les grains sont selon une variante de réalisation, enduits d'un pro­duit adhésif combustible avant d'être étalés sur la feuille qui peut alors ne pas comporter elle-même de couche d'adhésif.According to the embodiments illustrated in the figures, the pyrotechnic element comprises a single sheet of paper 1 to which a combustible adhesive product is applied, for example a viscous nitrocellulose solution, forming a thin adhesive layer. This adhesive layer constitutes means for retaining grains 2 of pyrotechnic material which are regularly spread over the sheet 1. The grains are, according to an alternative embodiment, coated with a combustible adhesive product before being spread over the sheet which can then do not itself have a layer of adhesive.

La feuille 1 est, à sa partie destinée à être dirigée vers le haut, désormais appelée partie supérieure, munie d'un ruban adhésif 3 s'étendant le long du bord correspondant de la feuille et chevau­chant une partie de la face externe de celle-ci. Ce ruban peut naturellement aussi être disposé sur la face interne de la feuille qui peut également être pourvue d'un deuxième ruban adhésif disposé à l'extré­mité opposée de la feuille.The sheet 1 is, in its part intended to be directed upwards, now called the upper part, provided with an adhesive tape 3 extending along the corresponding edge of the sheet and overlapping a part of the external face of it. this. This tape can naturally also be placed on the internal face of the sheet which can also be provided with a second adhesive tape placed at the opposite end of the sheet.

Dans le cas où la feuille de papier est min­ce et donc relativement fragile, un élément de rigidi­fication sous forme d'un ruban en carton 4 est avan­tageusement fixé à la partie supérieure de la feuille. Cet élément de rigidification s'étend parallèlement au ruban adhésif sur une partie de la longueur de celui-­ci et peut être percé d'un ou de plusieurs trous des­tinés à recevoir une ficelle ou autre dispositif d'attache pour la suspension de l'élément au-dessus du sol.In the case where the sheet of paper is thin and therefore relatively fragile, a stiffening element in the form of a cardboard tape 4 is advantageously fixed to the upper part of the sheet. This stiffening element extends parallel to the adhesive tape over part of its length and can be pierced with one or more holes intended to receive a string or other fastening device for the suspension of the element above ground.

La feuille est, à sa partie destinée à être dirigée vers la bas, désormais appelée partie infé­rieure, pourvue d'une couche d'une matière d'allumage 5 disposée à proximité du bord correspondant et de préférence s'étendant sur toute la longueur de celui-­ci.The sheet is, in its part intended to be directed downwards, henceforth called the lower part, provided with a layer of an ignition material 5 arranged near the corresponding edge and preferably extending over the entire length of this one.

Selon un mode de réalisation illustré sur les figures 2 et 3, la feuille 1 formant support pour les grains 2 est pliée sur elle-même en accordéon. Les parties pliées de la feuille sont maintenues les unes contre les autres à l'aide du ruban adhésif 3.According to an embodiment illustrated in Figures 2 and 3, the sheet 1 forming a support for the grains 2 is folded on itself in an accordion. The folded parts of the sheet are held against each other using the adhesive tape 3.

Selon un autre mode de réalisation illustré sur les figures 4 et 5, la feuille 1 est enroulée en spirale sur elle-même et maintenue enroulée à l'aide du ruban adhésif 3. Ce ruban peut par ailleurs être remplacé par un autre moyen de liaison approprié comme par exemple une colle ou des rivets.According to another embodiment illustrated in FIGS. 4 and 5, the sheet 1 is wound in a spiral on itself and kept wound with the aid of the adhesive tape 3. This tape can moreover be replaced by another connecting means suitable such as glue or rivets.

L'élément d'artifice peut, comme déjà men­tionné, être muni d'un second ruban adhésif disposé à l'extrémité inférieure de la feuille afin de mieux maintenir ensemble les parties repliées ou enroulée de la feuille.The device can, as already mentioned, be provided with a second adhesive tape disposed at the lower end of the sheet in order to better hold together the folded or rolled up parts of the sheet.

Selon un autre mode de réalisation non il­lustré sur les figures, deux feuilles planes sont dis­posées l'une contre l'autre et fixées l'une à l'autre à au moins leur extrémité supérieure par un ruban adhésif. Des éléments d'artifice peuvent, selon ce mo­de de réalisation, être fabriqués à partir de rubans en papier qui sont ensuite coupés à des longueurs ap­propriées.According to another embodiment not illustrated in the figures, two flat sheets are arranged one against the other and fixed to each other at at least their upper end by an adhesive tape. According to this embodiment, fireworks can be made from paper ribbons which are then cut to suitable lengths.

Les moyens de retenue des grains pyrotechni­ques 2 entre les parties de feuille 1 pliées et rete­nues les unes contre les autres, ou dans une feuille enroulés sur elle-même, ou bien entre deux feuilles planes, peuvent être constitués avantageusement par la paroi même de la feuille dans le cas où cette paroi est relativement rigide de façon à pouvoir former un élément d'artifice compact dans lequel les parties de la feuille sont sollicitées les unes contre les autres lors du pliage ou de l'enroulement de la feuille. Dans ce cas, aucun adhésif n'est nécessaire.The means for retaining the pyrotechnic grains 2 between the sheet parts 1 folded and retained against one another, or in a sheet wound on itself, or else between two sheets flat, can advantageously be formed by the very wall of the sheet in the case where this wall is relatively rigid so as to be able to form a compact firework element in which the parts of the sheet are urged against each other during folding or roll up the sheet. In this case, no adhesive is required.

La feuille peut avantageusement être une feuille en papier gaufré. Les grains sont, dans ce cas, maintenus prisonniers dans des alvéoles qui sont formées lorsque la feuille est pliée ou enroulée sur elle-même ou lorsque plusieurs feuilles sont superpo­sées les unes sur les autres.The sheet can advantageously be a sheet of embossed paper. The grains are, in this case, held captive in cells which are formed when the sheet is folded or rolled up on itself or when several sheets are superimposed on each other.

Au moins l'une des extrémités latérales de la feuille selon le mode de réalisation illustré sur les figures 2 et 3 peut être prolongée afin de former une enveloppe qui entoure les plis et qui forme une surface continue de protection.At least one of the side ends of the sheet according to the embodiment illustrated in Figures 2 and 3 can be extended to form an envelope which surrounds the folds and which forms a continuous protective surface.

Selon le mode de réalisation illustré sur les figures 4 et 5, une telle enveloppe est automati­quement formée lorsque la feuille est enroulée sur elle-même.According to the embodiment illustrated in Figures 4 and 5, such an envelope is automatically formed when the sheet is wound on itself.

On peut aussi envisager une enveloppe sépa­rée en, par exemple, une matière plastique mince im­perméable à l'eau pour protéger l'élément d'artifice contre l'humidité jusqu'à son utilisation.It is also possible to envisage a separate envelope made of, for example, a thin waterproof plastic material to protect the firework element against humidity until it is used.

Le fonctionnement de l'élément d'artifice pyrotechnique est simple. L'élément est suspendu à une certaine hauteur par rapport au niveau du sol et la couche d'une matière d'allumage est mise à feu. La feuille est ainsi mise à feu et brûle tout en libérant les grains qui sont successivement allumés et tombent vers le sol en développant l'intensité lumineuse re­quise. Les grains forment ainsi une cascade de feu en tombant.The operation of the pyrotechnic firework element is simple. The element is suspended at a certain height above ground level and the layer of ignition material is ignited. The leaf is thus ignited and burns while releasing the grains which are successively lit and fall towards the ground, developing the required light intensity. The grains thus form a cascade of fire as they fall.

L'élément d'artifice pyrotechnique suivant l'invention est facile à fabriquer étant donné qu'il peut être formé par une seule feuille en papier pliée ou enroulée sur elle-même et son prix de revient est ainsi extrêmement bas.The pyrotechnic firework element according to the invention is easy to manufacture since it can be formed by a single sheet of paper folded or rolled up on itself and its cost price is thus extremely low.

Claims (10)

1. Elément d'artifice pyrotechnique destiné à être suspendu au-dessus du sol, comportant des grains de matière pyrotechnique (2) d'une taille qui est fonction de leur durée de combustion moyenne requise, les grains (2) étant conditionnés dans un emballage constitué d'au moins une feuille en papier (1) sur laquelle les grains (2) sont étalés et retenus en place par des moyens de retenue, ladite feuille constituant également des moyens de mise à feu (1) des grains, caractérisé en ce que ladite feuille (1) est repliée ou enroulée sur elle-même de manière à consti­tuer par sa paroi même lesdits moyens de retenue des grains (2).1. Pyrotechnic firework element intended to be suspended above the ground, comprising grains of pyrotechnic material (2) of a size which is a function of their required average burning time, the grains (2) being packaged in a packaging consisting of at least one paper sheet (1) on which the grains (2) are spread out and held in place by retaining means, said sheet also constituting means for igniting (1) the grains, characterized in that said sheet (1) is folded or rolled up on itself so as to constitute by its very wall said grain retaining means (2). 2. Elément d'artifice pyrotechnique suivant la revendication 1, caractérisé en ce que ladite feuille (1) est repliée sur elle-même en accordéon.2. pyrotechnic firework element according to claim 1, characterized in that said sheet (1) is folded back on itself in accordion. 3. Elément d'artifice pyrotechnique suivant la revendication 1, caractérisé en ce que ladite feuille (1) est enroulée sur elle-même en spirale.3. element of pyrotechnic device according to claim 1, characterized in that said sheet (1) is wound on itself in a spiral. 4. Elément d'artifice pyrotechnique suivant l'une quelconque des revendications précédentes, ca­ractérisé en ce que la feuille (1) est, à son extrémi­té destinée à être tournée vers le haut, pourvue de moyens de liaison (3) destinés à maintenir la feuille dans son état plié ou enroulé.4. pyrotechnic firework element according to any one of the preceding claims, characterized in that the sheet (1) is, at its end intended to be turned upwards, provided with connecting means (3) intended to maintain the sheet in its folded or rolled up state. 5. Elément d'artifice pyrotechnique suivant la revendication 4, caractérisé en ce que les moyens de liaison (3) sont constitués d'un ruban adhésif s'étendant sur toute la longueur de la feuille (1) et chevauchant une partie de celle-ci.5. pyrotechnic firework element according to claim 4, characterized in that the connecting means (3) consist of an adhesive tape extending over the entire length of the sheet (1) and overlapping a part of it- this. 6. Elément d'artifice pyrotechnqiue suivant l'une quelconque des revendications précédentes, ca­ ractérisé en ce que la feuille (1) est en papier gaufré et en ce que la paroi de la feuille forme, dans son état plié ou enroulé, des alvéoles dans lesquel­les les grains pyrotechniques (2) sont maintenus prisonniers.6. Pyrotechnic firework element according to any one of the preceding claims, ca characterized in that the sheet (1) is made of embossed paper and in that the wall of the sheet forms, in its folded or rolled up state, cells in which the pyrotechnic grains (2) are held captive. 7. Elément d'artifice pyrotechnique suivant l'une quelconque des revendications précédentes, ca­ractérisé en ce que la feuille (1) est, à son extré­mité destinée à être tournée vers le haut, pourvue d'un ruban de rigidification (4) s'étendant le long du bord de la feuille sur au moins une partie de la lon­gueur de celle-ci.7. pyrotechnic firework element according to any one of the preceding claims, characterized in that the sheet (1) is, at its end intended to be turned upward, provided with a stiffening tape (4) s' extending along the edge of the sheet over at least a portion of its length. 8. Elément d'artifice pyrotechnique suivant l'une quelconque des revendications précédentes, ca­ractérisé en ce que la feuille (1) est, à son extré­mité destinée à être tournée vers le bas, pourvue d'une couche d'allumage (5) s'étandant le long du bord de la feuille sur au moins une partie de la longueur de celle-ci.8. pyrotechnic device according to any one of the preceding claims, characterized in that the sheet (1) is, at its end intended to be turned downward, provided with an ignition layer (5) s spreading along the edge of the sheet over at least part of its length. 9. Elément d'artifice pyrotechnique suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins l'une des extrémités latérales de la feuille (1) est prolongée afin de former une enveloppe qui entoure l'élément et qui forme une surface continue de protection.9. pyrotechnic firework element according to any one of the preceding claims, characterized in that at least one of the lateral ends of the sheet (1) is extended in order to form an envelope which surrounds the element and which forms a continuous protective surface. 10. Elément d'artifice pyrotechnique suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il est en outre pourvu d'une enveloppe protectrice en une matière imperméable à l'eau.10. Pyrotechnic firework element according to any one of the preceding claims, characterized in that it is further provided with a protective envelope made of a waterproof material.
EP89403113A 1988-11-22 1989-11-10 Fireworks element Withdrawn EP0370860A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815170 1988-11-22
FR8815170A FR2639429B1 (en) 1988-11-22 1988-11-22 PYROTECHNIC FIREWORK ELEMENT

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EP0370860A1 true EP0370860A1 (en) 1990-05-30

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EP89403113A Withdrawn EP0370860A1 (en) 1988-11-22 1989-11-10 Fireworks element

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FR (1) FR2639429B1 (en)

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US1818478A (en) * 1930-03-11 1931-08-11 Hitt Thomas Gabriel Pyrotechnic display device
GB1447208A (en) * 1975-02-13 1976-08-25 Ferri G Ammunition for toy weapons
DE3521463A1 (en) * 1985-06-14 1986-12-18 Unger, Lore, 7630 Lahr Object for producing a shower of sparks
EP0274227A2 (en) * 1986-12-09 1988-07-13 Brock's Fireworks limited Rotating fireworks

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1503740A (en) * 1923-02-27 1924-08-05 Milton M Adler Pyrotechnical device
US1818478A (en) * 1930-03-11 1931-08-11 Hitt Thomas Gabriel Pyrotechnic display device
GB1447208A (en) * 1975-02-13 1976-08-25 Ferri G Ammunition for toy weapons
DE3521463A1 (en) * 1985-06-14 1986-12-18 Unger, Lore, 7630 Lahr Object for producing a shower of sparks
EP0274227A2 (en) * 1986-12-09 1988-07-13 Brock's Fireworks limited Rotating fireworks

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FR2639429B1 (en) 1994-04-01
FR2639429A1 (en) 1990-05-25

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