EP3306261B1 - Firework and fireworks assembly - Google Patents

Description

The invention relates to a fireworks body having the features of the preamble of claim 1. EP 2 669 618 A1 discloses such a firecracker. It further relates to a fireworks assembly having at least one such fireworks body.

Firecrackers are generally very popular. They are fired on the occasion of larger festivities, such as city festivals, weddings or the like, then often by professional fireworks. But they are also used by private individuals, usually for New Year's Eve celebration and the dawn of the new year.

In the field of firecrackers there are very different types. They differ on the one hand by the effects produced, on the other hand by a categorization with regard to their potential dangers or with regard to groups of persons who are allowed to use these fireworks. In terms of types, a distinction can be made roughly between fireworks that produce lighting effects, fireworks that produce sound effects (bangs or whistles), and those fireworks that combine to produce both effects, light and sound.

With regard to hazard categorization, the different legal systems provide for different categorizations, with categorization generally being made according to what is known as the net explosive mass that a firecracker contains. In Germany, for example, the maximum category of fireworks that may be used by adult private individuals, but then only at certain times, is the so-called category 2. Category 3 and 4 firecrackers may then only be detonated by trained fireworks.

Per shot of a fireworks tube battery with category 2 bombs, according to current legislation in Germany, only a maximum of 25 g net explosive mass may be contained. The net explosive mass is summed up by the masses of different explosive materials grouped together in a firecracker. These include propellant charges to eject the fireworks from a launch tube or the like, or to rise as firecrackers into the sky, burster charges to disassemble the fireworks, and pyrotechnic effect elements that cause the typical colored and / or glittering light effects.

Typical elements of fireworks of category 2 are so-called bombettes, which are often grouped in so-called batteries. These are cylindrical firecrackers which are arranged in receiving tubes of the so-called battery, can be ejected from below the bombs propellant charges from the receiving tubes of the battery and fired into the sky. These bombettes have in their interior a Zerlegerladung, which is ignited delayed, so that the Bombette explodes after reaching a rise in the sky, wherein contained in the Bombette pyrotechnic effect bodies are ignited and give light effects in the sky. In order to be able to attribute such batteries with bombs to category 2 fireworks, according to current German legislation, such a battery may only contain a maximum of 500 g net explosive mass, whereby the already mentioned and 25 g net explosive mass per fireworks shot must not be exceeded.

An example of such a battery with bombettes is in the DE 10 2007 054 435 A1 shown. In such known from the prior art Bombette or a plurality of such Bombetten having battery, the pyrotechnic effect bodies are arranged inside the cylindrical Bombette mixed with the cylinder charge arbitrarily. Igniting the bursting charge of these bombettes in the sky, the pyrotechnic effect bodies strive cloud-like, and there is the well-known cloud-like image of the individual, lighting effects, burning pyrotechnic effect body.

In fireworks of category 3 and / or 4, in particular ball bombs, however, it is known that they can be made in a manner in which the pyrotechnic effect bodies are housed in a predetermined arrangement in the ball bomb, so that after igniting the Zerlegerladung the pyrotechnic effect bodies in a geometric pattern in the sky diverge, for example, circular, heart-shaped or in more complex patterns, such as a so-called smiley.

However, such effects can not be realized with fireworks of category 2, in particular with fireworks batteries with category 2 bombs, ie those which are also approved for the end user. In particular in the area of the bombs, which are much smaller in terms of their external dimensions and in particular with regard to the net explosive mass used, there are no comparable fireworks with corresponding effects as can be achieved in the category of professional fireworks with category 3 and / or 4 fireworks.

Accordingly, it is an object of the invention to provide a fireworks body, which can be designed as a Category 2, so as a usable end consumer fireworks, and thereby diverge after ignition in the sky, the pyrotechnic effect body in predetermined geometrical patterns and so patterns and Draw characters to the sky. In particular, such a fireworks body should be feasible in the form of a so-called bombette. Another object of the invention is a fireworks body arrangement specify with one, in particular with several, novel fireworks, so that, for example, a battery can be formed with bombettes that can produce corresponding effects of lighting technology type with geometric patterns.

This object is achieved by a firework with the features of claim 1. Advantageous developments of such a firecracker are given in the dependent claims 2 to 8. In claim 9, a novel fireworks body arrangement is referred to, comprising at least one fireworks invention. Advantageous developments of a fireworks body arrangement according to the invention according to this invention are designated in the dependent claims 10 to 12.

According to the invention has a firecracker - this initially consistent with the known fireworks according to the prior art as US 2005/066837 A1 and EP 1 345 004 A1 - A cylinder jacket-shaped outer, two end faces having sleeve which is closed at its two end faces each with a layer of dam material. The dam material may be a plug of compacted earth material or a clay material or the like in the usual way.

The fireworks also has a plurality of pyrotechnic effect bodies disposed within the outer sleeve. These pyrotechnic effect bodies can cause a variety of lighting effects, on the one hand in different colors, on the other hand, with or without a flash effect or the like. In particular, they can also cause each other different light effects, that is, each shine in different colors or partially glitter or permanent or the like.

The fireworks further has a burster charge disposed within the outer sleeve for rupturing the outer sleeve and for dispersing the pyrotechnic effect bodies apart. Finally, it has a dam material on a first end face of the two end faces penetrating and guided to the bursting charge first ignition line. This first ignition line serves to ignite, in particular delayed, the bursting charge, in particular then, when the fireworks is fired with a propellant charge in the sky, this first ignition line in terms of their delay is such that the Zerlegerladung ignited only after reaching a predetermined pitch of the fireworks body, so that the pyrotechnic light effect caused by the pyrotechnic effect body, in a sufficient height in the sky is achieved.

The special feature of the fireworks invention is now that the Zerlegerladung is housed inside a completely sealed, cylindrical shell, said cylindrical shell is arranged coaxially with the outer sleeve in such a way that the longitudinal center axes of the outer sleeve and the cylindrical shell coincide , A collapse of the longitudinal central axes does not have to be exactly on one and the same line, but it suffices an approximate collapse of these longitudinal central axes, so that the cylindrical shell in which the Zerlegerladung is received, with respect to the orientation transverse to the longitudinal direction substantially centrally in the interior cylinder jacket-shaped outer sleeve is arranged.

In contrast to known fireworks in which Zerlegerladungen either without further wrapping and mixed with the pyrotechnic effect bodies in a fireworks enclosing vessel, such as a cylinder jacket outer sleeve, are introduced or loose in the Zerlegerladungen and not exactly determined in terms of geometric shape in one Art Papiersäckchen filled are arranged in the fireworks, a defined cylindrical casing is formed in the fireworks invention, in which the Zerlegerladung is included. In order for the bursting charge to be ignited, the first ignition lead is passed through an opening in the shell to the bursting charge. This is particularly necessary because the wall of the cylindrical shell does not absorb and burn the spark, so that the bursting charge would be ignited immediately. Rather, the wall of the cylindrical casing compared to the known paper bags is much stiffer and dimensionally stable, so that the cylindrical shell receives its cylindrical shape. This is achieved by stronger wall material, which is just not penetrated by a spark of the ignition cable.

Furthermore, the invention provides that the pyrotechnic effect body in the interior of the sleeve and outside the cylindrical shell, ie outside the Zerlegerladung between a cylindrical side wall of the cylindrical shell and a cylindrical side wall of the outer sleeve, in at least one transversely, in particular perpendicular to the longitudinal central axis of the outer sleeve extending plane, are arranged to a predetermined geometric figure. The geometric figure, to which the pyrotechnic effect bodies are arranged, then predefines the figure or symbol, which is drawn in the sky after ignition of the bursting charge with the diverging, burning effect bodies. Here, very different geometric figures may be provided, which are particularly well suited because of the limited space basically simple geometric figures, such as circles, hearts or stars. If the pyrotechnic effect bodies are arranged, for example, in a circular shape in a plane which is oriented transversely, in particular perpendicular to the longitudinal center axis of the cylindrical casing within which the disintegrating charge is arranged, then effect bodies are ignited after ignition of the disintegrating charge on the one hand and on account of the predetermined geometry of their arrangement on the other hand, due to the given geometry, in which the Zerlegerladung is arranged in the cylindrical casing, very precisely driven evenly outwards, so that the circular shape is maintained even when driving apart the pyrotechnic effect body and their burning. In the sky a luminous and growing circle will be visible.

The special feature of the invention is that the arrangement of the Zerlegerladung in a clearly defined in their geometry cylindrical shell even in a confined space and with limited amount of net explosive mass of the Zerlegerladung a defined and exact drift apart the pyrotechnic effect body from the original geometric arrangement towards him in their diameters larger evolving, the exact geometric alignment but retaining geometric patterns in the sky is possible. Thus, corresponding effects can be realized for the first time in class 2 fireworks suitable for consumers. The consumer thus gets access to pyrotechnic effect fireworks, which previously could only be obtained in the context of professional fireworks ignited fireworks. Thus, there is a significant added value for the consumer when it fires a corresponding fireworks with such fireworks.

The cylindrical casing is additionally closed at its opposite end faces each with a layer of a dam material. It is thereby achieved that a pressure pulse which arises when igniting the Zerlegerladung not escapes axially over the end faces of the cylindrical casing, but radially directed occurs, so that the arranged in the given geometric figure pyrotechnic effect body with maximum momentum and radially are driven apart evenly , In particular, when pyrotechnic effect bodies are arranged to geometric arrangements in the fireworks according to the invention only in one plane or if in an odd number of levels, it is advantageous if these in a longitudinal central axis of the cylindrical shell at the level of the center of the longitudinal extension of the cylindrical Sheath, in particular at a right angle, cutting plane are arranged. For in such a central portion of the held by the cylindrical shell in the geometric shape bursting charge a particularly uniform, radially outwardly acting impulse is exerted on the effect body in their explosive combustion, so that they very uniformly hold the desired geometric figure in the sky when they diverge. The figure drawn with the firing pyrotechnic effect body develops particularly uniformly after the firing of the bursting charge even when, as provided according to an advantageous development of the invention, the longitudinal central axis of the cylindrical casing is replaced by a geometrical one Center of gravity of at least one geometric figure runs, to which the pyrotechnic effect body are arranged.

As already indicated above, the fireworks invention is not limited to the fact that only a single geometric figure can be generated with it. Rather, the pyrotechnic effect body may also be arranged in two or more planes and be placed in each of the planes according to a geometrically predetermined arrangement in figures. These may be, for example, similar figures, such as two or more circles. But it can also be provided different figure, for example, a circle and a star or the like. Ignites the Zerlegerladung, then several, in parallel planes to each other arranged geometric figures in the sky can be seen.

In principle, several Zerlegerladungen be arranged in successive compartments in the outer sleeve, so that - continued over an additional ignition - delayed ignition two or even more geometric figures are drawn one after the other to the sky, when the separate Zerlegerladungen ignite successively and in each case drive apart at least one geometric arrangement of pyrotechnic effect bodies of the given geometric shape and draw, for example, a circle, a star or a heart in the sky.

In order to place and fix the pyrotechnic effect bodies in the given geometric arrangement in the fireworks, according to a variant of the invention, these can be embedded in a non-explosive filling material, such as sand, which is located in a space between the cylindrical shell and the outer shell is filled. Other ways to fix the pyrotechnic effect body in the desired geometric arrangement, but are also conceivable. For example, as another variant of the invention contemplates, in addition to or as an alternative to embedding in the non-explosive filling material, they may be fixed, e.g., adhered, to an inner side of the cylindrical side wall of the outer sleeve. It is important only that the geometric arrangement of the pyrotechnic effect body lose neither in a transport of fireworks invention even when driving it out of a pick-up tube and firing into the sky their geometric arrangement so that they still exist when ignited with Zerlegerladung in this geometric arrangement and a corresponding symbol to the sky to draw.

The cylindrical casing can in particular be formed from a cardboard material or from a plastic material. It is crucial that the wall thickness of the cylindrical casing is sufficient, so that this casing, once filled with the Zerlegerladung, the latter continues to hold in the cylindrical shape defined by the cylindrical shell. The ignition line for supplying a spark for the ignition of the bursting charge is guided in particular by an end wall of the cylindrical casing.

As already mentioned, the aim of the invention is that the fireworks body should be one of the so-called category 2, that is, one which is freely available for full-year end consumers. Accordingly, the fireworks of the invention according to the invention advantageously contains a maximum of 25 g net explosive mass, in the case of a battery maximum 25 g net explosive mass per shot, this value is selected according to the current limit for firecrackers Category 2 according to German law. For other countries or in the case of corresponding legislative changes, a different upper limit should be preferred, always one that is the maximum permitted for use by the final consumer. Of course, this upper limit must not be exhausted, firecrackers invention can be equipped with less net explosive mass.

The fireworks invention is advantageously formed as a so-called Bombette, where he typically has a diameter of 8 to 30 mm, in particular from 18 to 30 mm, more preferably of 30 mm.

Part of the invention is also a fireworks arrangement with at least one vertically arranged, tubular receptacle in which a fireworks body of the type described above with the first end face, ie that end face which is pierced by the ignition, adjacent to a first, facing down is arranged to be aligned end, wherein disposed at the first end of the arranged in the tubular receptacle fireworks body, below the first end side of a propellant charge for expelling the fireworks body from the tubular receptacle, wherein a second ignition line for igniting the propellant charge and for igniting the first ignition is. With such a fireworks arrangement, the fireworks of the invention can be fired into the sky, where he draws by igniting the Zerlegerladung the graphic symbol or the geometric figure with the burning pyrotechnic effect bodies as a light symbol in the sky. This is to be understood in particular that the propellant charge can be arranged on the one hand separately from the fireworks body in the tubular receptacle, on the other hand, but also as part of the fireworks body. In that regard, an inventive fireworks can also have their own driving charge. The first and the second ignition line may be separate ignition lines, but it may also be the second ignition line connected to the first leads of a way that this continues to burn, after burning and igniting the propellant charge a burned portion of the second ignition line is released from the first ignition line so that the fireworks can ascend into the sky without being restrained by a burnt-out ignition lead.

In particular, the fireworks body arrangement can be formed battery-like, ie, with a plurality of parallel to each other substantially vertically arranged, tubular receptacles, in each of which a firecracker, in particular one of the type described above, is arranged, wherein under the first end of each of the fireworks in each of the tubular receptacles is arranged in each case a propellant charge for expelling the respective fireworks body from the tubular receptacle, wherein the second Ignition line for successively igniting the propellant charges and for igniting the respective first firing line of the respective fireworks body is guided in a manner by the fireworks arrangement that this second ignition line sequentially ignites the propellant charges of the tubular receptacles. In such a so-called battery, all of the firecrackers may be formed in the manner described above so that all of the fireworks fired therefrom draw geometric patterns to the sky. However, a smaller number of the fireworks according to the invention can also be arranged mixed with conventional fireworks in the battery, so that, for example, alternating geometric figures and cloud-like arrangements of burning effect bodies can be seen in the sky when the battery is ignited.

In particular, the tubular receptacle or the tubular receptacles can be closed at its second end (s) with a closure, in particular a sealing plate. Such platelets are typically formed of cardboard or plastic and in particular ensure that the receiving tube is completed, the fireworks can not fall out or can be removed without authorization.

In order to keep a corresponding battery under category 2 of firecrackers suitable for end users, it should, according to the currently applicable regulations in the EU, including in Germany, comprise a maximum of 500 g net explosive mass. For other countries or in the event of a change in the regulations in Germany, the maximum value of the net explosive mass will have to be adjusted accordingly.

From so-called batteries also so-called composite batteries can be formed, which may contain according to the current provisions for fireworks category 2 in Germany maximum 2 kg net explosive mass. Here, too, the individual batteries to be combined in the composite battery must not exceed a net explosive mass of 500 g each.

When in the foregoing of "cylindrical" or "cylindrical shape" is mentioned, this refers in particular to the shape of a circular cylinder.

Fig. 1

eine schematische Längsschnittdarstellung durch eine Anordnung aus einem erfindungsgemäßen Feuerwerkskörper in einem mit einer Treibladung ausgestatteten Aufnahmerohr.

Further advantages and features of the invention will become apparent from the following description of an embodiment with reference to the accompanying figure. The only one shows

Fig. 1

a schematic longitudinal section through an arrangement of a fireworks invention in a receiving tube equipped with a propellant charge.

In the only one FIG. 1 is a very highly schematic representation of an embodiment of the invention for a fireworks body and a fireworks invention illustrated.

An inventive fireworks body 1 is formed here in the form of a so-called bombette. This has an outer cylindrical sleeve 2, which is formed in particular from a paper or cardboard material with a stable wall thickness. At the front, this sleeve 2 is closed by a layer of dam material 3. A first ignition line 4 is characterized by in the FIG. 1 Position shown below dam material 3 and protrudes outward from the fireworks 1 out. In a cylindrical casing 5, which is dimensionally stable and in particular may be formed from a cardboard or plastic material, a Zerlegerladung 6 is arranged from an explosive material. The cylindrical casing 5 is closed in its end faces in each case with a layer of a dam material 13. This can be the same dam material as the firecracker 1 frontally closing dam material 3. By the frontal closure of the cylindrical shell 5 ensures that the pressure pulse obtained by igniting the Zerlegerladung 6 acts radially and is not degraded axially over the end faces. The first ignition line 4 is by a in the FIG. 1 arranged bottom end of the cylindrical casing 5 and through the dam material arranged there 13 passed through into the Zerlegerladung 6 inside.

The cylindrical casing 5 with the disintegrating charge 6 arranged therein is aligned coaxially with the outer sleeve 2 and is located centrally transversely to the longitudinal direction. That is, the longitudinal center axis of the outer sleeve 2 and the longitudinal center axis of the cylindrical casing 5 are substantially congruent to each other. In an annular space between the jacket wall of the cylindrical casing 5 and the outer cylindrical sleeve 2 pyrotechnic effect body 7 are arranged in a given geometric figure, here circular, here. The pyrotechnic effect body 7 lie in - here a single - plane, which is aligned here perpendicular to the longitudinal center axis of the cylindrical casing and the latter cuts approximately centrally. For purposes of illustration only, a tilted representation of the pyrotechnic effect body 7 arranged in a circle is selected in order to be able to show this in its geometric arrangement.

In this case, the number of pyrotechnic effect bodies 7 depicted here does not necessarily correspond to the number of effect bodies 7 arranged in the fireworks body 1. The pyrotechnic effect bodies 7 are embedded in a non-explosive filling material 8, for example sand. As a result, they are held in the once-oriented shape and orientation to each other. As can be seen, the pyrotechnic effect bodies 7 are arranged here in a circle and concentrically around the cylindrical casing 5.

The fireworks body 1 is arranged in a receiving tube 9, which may be, for example, a receiving tube 9 of a battery of fireworks 1, wherein the receiving tube 9 extends vertically and below the fireworks body 1 a propellant charge 10 is arranged. Through this propellant charge passes through a second ignition line 11, to which the first supply line 4 is brought close with their protruding from the fireworks 1 end. A sealing plate 12 closes the receiving tube 9 above the fireworks body 1 frontally.

To ignite the fireworks body 10, the second ignition line 11 is ignited. This burns off until it enters the propellant charge 10, which ignites becomes. By igniting the propellant 10, the fireworks 1 is ejected from the receiving pipe 9 in the vertical direction and rises in the sky. At the same time ignited when igniting the propellant charge 10 protruding from the fireworks 1 end of the first ignition line 4 and burns by in the FIG. 1 As a result, the disintegrating charge 6 is ignited, tearing the outer cylindrical sleeve 2 and driving the pyrotechnic effect body 7 defined with magnitude substantially equal, radially outward pulse apart, so that in the sky a growing circle emerges as a pyrotechnic luminous geometric symbol. The delay between the ignition of the propellant charge 10 and the ignition of the Zerlegerladung 6, which is determined by the nature of the first ignition 4, is chosen so that the Zerlegerladung 6 ignites only after reaching a predetermined rise height of the fireworks body 1.

Due to the peculiarity of the arrangement of the Zerlegerladung 6 in the cylindrical shell 5 can be arranged here in the smallest space a corresponding dimensionally accurate geometric figure with the pyrotechnic effect body 7 in the fireworks and then displayed in the sky. This is especially true with a bombette of category 2, i. with a maximum of 25 g net explosive mass for the shot. The bombette shown can, for example, have a diameter of the outer sleeve 2 of 20 to 30 mm, in particular 30 mm.

The embodiment shown here does not limit the invention; this is defined by the following claims.

LIST OF REFERENCE NUMBERS

1

Fireworks

2

outer cylinder jacket sleeve

3

dam material

4

first ignition cable

5

cylindrical casing

6

bursting

7

pyrotechnic effect body

8th

filling material

9

receiving tube

10

propellant

11

second ignition line

12

sealing plates

13

dam material

Claims (12)

1. A firework (1) with

   - a cylindrical outer sleeve (2) which has two end faces and is closed at each of its two end faces by a layer of dam material (3);

   - a plurality of pyrotechnic effect bodies (7) arranged inside the outer sleeve (2);

   - a bursting charge (6) arranged within the outer sleeve (2) for bursting the outer sleeve (2) and for driving the pyrotechnic effect bodies (7) apart, and

   - a first ignition lead (4) penetrating the dam material (3) at a first end face of the two end faces and extending as far as the bursting charge (6),

   wherein
   the bursting charge (6) is received inside an all-round closed, cylindrical casing (5), which cylindrical casing (5) is arranged in such a way coaxial with the outer sleeve (2), in that longitudinal centre axes of the outer sleeve (2) and the cylindrical casing (5) coincide, the first ignition lead (4) being led through an opening in the cylindrical casing (5) to the bursting charge (6),
   and
   the pyrotechnic effect bodies (7) being arranged inside the outer sleeve (2) and outside the cylindrical casing (5), between a cylindrical side wall of the cylindrical casing (5) and a cylindrical side wall of the outer sleeve (2), in at least one plane extending transversely, in particular perpendicularly, to the longitudinal central axis of the outer sleeve (2) to form a predetermined geometric figure, characterised in that

   - the cylindrical casing (5) is additionally closed at its opposite end faces by a layer of a dam material (13) in each case, and

   - in that a space between the cylindrical casing (5) and the outer sleeve (2) is filled with a non-explosive filling material in which the pyrotechnic effect bodies (7) are embedded in the predetermined geometric arrangement, and/or in that the pyrotechnic effect bodies (7) are fixed, in particular glued, to an inner side of the cylindrical side wall of the outer sleeve (2).
2. A firework (1) according to claim 1, characterised in that the pyrotechnic effect bodies (7) are arranged in a plane intersecting the longitudinal central axis of the cylindrical casing (5) at the level of the centre of the longitudinal extent of the cylindrical casing (5), in particular at a right angle.
3. A firework (1) according to one of the preceding claims, characterised in that the pyrotechnic effect bodies (7) are arranged on a circle, heart-shaped or star-shaped.
4. A firework (1) according to one of the preceding claims, characterised in that the longitudinal central axis of the cylindrical casing (5) runs through a geometric centre of gravity of said at least one geometric figure on which the pyrotechnic effect bodies (7) are arranged.
5. A firework (1) according to one of the preceding claims, characterised in that the pyrotechnic effect bodies (7) are arranged inside the outer sleeve (2) and outside the cylindrical casing (5), between a cylindrical side wall of the cylindrical casing (5) and a cylindrical side wall of the outer sleeve (2), in at least two planes parallel to one another to form predetermined geometric figures.
6. A firework (1) according to one of the preceding claims, characterised in that the cylindrical casing (5) is formed of a cardboard or plastic material.
7. A firework (1) according to one of the preceding claims, characterised in that it contains a maximum of 25 g net explosive mass.
8. A firework (1) according to one of the preceding claims, characterised in that the outer sleeve (2) has a diameter of 14 to 50 mm, in particular of 20 to 40 mm, particularly preferably of 30 mm.
9. A firework assembly having at least one tubular receptacle (9) which is to be arranged vertically and in which a firework (1), according to one of the preceding claims, is arranged with its first end face adjacent to a first end which is to be oriented downwards, wherein a propellant charge (10) for driving out the fireworks body from the tubular receptacle (9) is arranged below the first end face, at the first end of the firework (1) arranged in the tubular receptacle (9), wherein a second ignition lead (11) for igniting the propellant charge (10) and for igniting the first ignition lead (4) is provided.
10. A firework assembly according to claim 9, characterised by a plurality of tubular receptacles (9) which are arranged essentially vertically parallel to one another and in each of which a firework (1) is formed, at least one of which is formed according to one of claims 1 to 10, is arranged with the first end face pointing downwards, a propellant charge (10) for driving the respective firework (1) out of the respective tubular receptacle (9) being arranged in each of the tubular receptacles (9) below the first end face of each of the fireworks (1), the second ignition lead (11) for successively igniting the propellant charges (10) and for igniting the respective first ignition lead (4) of the respective firework (1) being guided through the firework arrangement in such a way that this second ignition lead (11) sequentially ignites the propellant charges (10) in the tubular receptacles (9).
11. A firework assembly according to one of the claims 9 or 10, characterised in that the tubular receptacle(s) (9) is/are closed at its second end(s) by a sealing closure (12), such as in particular a sealing plate.
12. A firework assembly according to one of the claims 9 to 11, characterised in that it comprises a maximum of 500 g net explosive mass.

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