EP1079200A1 - Dispositif pyrotechnique de connexion et de retard - Google Patents
Dispositif pyrotechnique de connexion et de retard Download PDFInfo
- Publication number
- EP1079200A1 EP1079200A1 EP00410101A EP00410101A EP1079200A1 EP 1079200 A1 EP1079200 A1 EP 1079200A1 EP 00410101 A EP00410101 A EP 00410101A EP 00410101 A EP00410101 A EP 00410101A EP 1079200 A1 EP1079200 A1 EP 1079200A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- pyrotechnic device
- parts
- track
- wicks
- 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.)
- Granted
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/06—Relative timing of multiple charges
-
- 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
- F42B4/24—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes characterised by having plural successively-ignited charges
Definitions
- the present invention relates to the field of pyrotechnics.
- the various pyrotechnic pieces for example rockets placed in mortars, are connected in clusters, i.e. the quick wick of each piece is connected to another wick directly or through a pyrotechnic delay, itself linked to another wick, to another delay, etc., to a point to which an igniter is connected electric. It might be easier to link directly each wick of each firework to a specific igniter and, by an electronic circuit, to control the instant each element. However, in practice, this is much too expensive and we prefer to use the system traditional wicks and pyrotechnic delays.
- Delay devices are of various types. he for example, slow wicks or Bickford cords. However, more generally, delays made up of powder packed in a cardboard cylinder because it is currently the cheapest device. Commonly, the connections between igniter, wicks and delay devices are provided by kraft paper sheaths and ligatures, these sheaths and ligatures then possibly being themselves ligated or nailed to wooden bars, for example the housing in which are arranged several mortars. The realization of such assembly is long and tedious. So generally proceeds to assemble the various elements in advance, workshop. In addition, such arrangements are not easily accessible to a non-professional user.
- the above delay devices also have the disadvantage of not making it possible to carry out any delay time. It is generally accepted that, with common powders, the length of the cardboard cylinder fixes the delay time which is around one second per centimeter. In practice, it is difficult to get relatively accurate delays from a duration less than 2 seconds or more than 5 to 6 seconds. Otherwise, you have to switch to slow strands of cord type. Bickford which are significantly more expensive.
- kraft paper assemblies are subject to malfunctions in case of heavy rain. Then protect the various delay devices and the various arrangements.
- delay systems produce strong flames on one side of the cylinder when the delay begins to ignite and on both sides when the flame reaches the other end of the delay. These strong flames are likely ignite wicks or delay devices located proximity. This requires taking extra precautions and further complicates the assembly.
- an object of the present invention is to provide a connection and delay system between wicks or between igniter and wick (s) which is particularly simple to set up works and which allows to reach delays of durations chosen, for example ranging from zero duration to durations of the order of a minute or more.
- Another object of the present invention is to provide such a system for selecting a delay of a duration chosen from several predetermined durations.
- the present invention provides a pyrotechnic device for connection and delay between wicks and / or between igniter and wicks, comprising a cavity divided into two parts with internal walls coated a highly flammable material; means for blocking one or more several wicks in each part; and means of communication between the two parties.
- Figure 1A is a sectional view of a first mode of embodiment of the present invention consisting of a cylinder hollow 1 whose internal walls 2 are coated with a material highly flammable, preferably a powdery product which ignites very easily inside a cavity. This product is for example black powder stuck.
- a means 3 for holding a wick At each end of the cylinder 1 is mounted a means 3 for holding a wick.
- this holding means is represented in the form of a cap.
- the cylinder 1 is made of plastic as well as the caps 3.
- FIG. 1B represents an end view of an example of cap.
- the flat part of the cap is for example a sheet thin, elastic plastic material cut into a star for form tongues whose tip is substantially in point of intersection of the sheet and the axis of the cylinder. So, when a drill bit is pressed towards the inside of the cylinder, the elementary tongues deform and bend inward, opposing removal of the wick.
- Figure 1C shows the device of Figure 1A also in a sectional view, in the case where wicks 4 and 5 are respectively inserted in the left part 6 and in the straight part 7 of the cylinder.
- the wicks can be more or less sunken and go or not until joining.
- FIG. 1D illustrates an alternative embodiment of the wick holding means 3 according to the present invention.
- This medium takes the form of a flange 8 provided with turned teeth inward and fixed at point 9 at one end of the tube 1.
- the free ends of the collar are provided with means additional fixing 10, for example by clipping, for tighten the flange against a wick and the walls of the tube.
- This embodiment allows better adaptation to wicks relatively hard and of large diameter.
- the device according to the first embodiment of the present invention allows the connection between two locks.
- wick 4 Once wick 4 has been lit, it transmits flames inside the cylinder which can ignite directly the end of the opposite wick 5.
- the wick 4 causes the powder placed on the internal walls 2 and the flame created by this powder causes the second wick 5 to ignite if a conflagration direct did not happen.
- the cylinders 1 and their caps 3 can be sized so that we can introduce each end one or more wicks. We can also let a wick penetrate on one side and an igniter on the other side electric or bring in a wick and a side igniter and on the other side one or more wicks to be able propagate the flame communicated by the igniter simultaneously with several wicks.
- Figure 2 shows a sectional view of a second embodiment of the present invention ensuring a connection function between wicks with a non-zero delay.
- the device according to the second embodiment of this invention comprises two cylindrical parts 11 and 12 embedded one inside the other.
- the internal cavity of the inner cylinder 11 is divided into two parts 13 and 14 by a partition 15.
- the internal walls of each of the two parts 13 and 14 are, as in the case of the first embodiment of the present invention, coated with highly flammable material 2.
- the outer wall of the internal cylinder 11 is provided with a grooving, for example helical similar to a thread, forming a track 16 which communicates by a first end with an orifice 17 in the wall of the left part 13 of the internal cavity of the cylinder 11 and by a second end with an orifice 18 in the wall of the right part 14 of the internal cavity of the cylinder 11.
- the track 16 formed between the holes 17 and 18 is filled with a material allowing, when lit at one end, to spread the flame toward the other end, at a substantially linear speed constant. This will be, for example, packed black powder or a specific cord such as a fine slow wick manufactured by the Bickford company.
- end caps 3 allow insertion and locking of wicks 4 and 5 in each of the cavity parts 13 and 14.
- wick 4 or an igniter replacing wick 4 brings a flame to be created in the left part 13, this flame ignites the powder placed on the walls of this part 13.
- FIG. 3 represents an alternative embodiment of the device of FIG. 2, constituting a third mode of realization of the present invention.
- the device comprises an internal cylinder 21 and an external cylinder 22.
- the cavity internal is divided into two parts 23 and 24 by a partition 25.
- a short rectilinear track 26 extends between orifices 27 and 28 passing through the walls of the cavity parts 23 and 24.
- the partition 25 can be opened. arrives at a structure very similar to that of the first embodiment of the invention.
- FIG. 3 A lock / lock system for wicks different from that of FIGS. 1 and 2 is also illustrated in FIG. 3.
- the outer tube 22 overflows on either side of the inner tube 21 and has in the overhanging part an annular groove 29 intended to receive a disc 30 for blocking a wick.
- This disc may have in view at the end, a look similar to that of Figures 1 and 2.
- the Figure 3 device has larger slots between the elementary tabs, and that the central part is cut out.
- a disc made of a material flexible metal According to another variant of the present invention, not shown, the support system may be made up of molded plastic tabs ends of the inner cylinder.
- FIG. 4 represents a fourth embodiment of the present invention.
- the left side of the figure has a device similar to that of FIG. 2 in which same elements have been designated by the same references.
- the part right 14 of the cavity located on the right of the partition 15 extends by dividing into several cylinders 31 to 34, of which each is intended to receive a wick 35 to 38.
- FIGS. 5A and 5B show in side view and in front view a fifth embodiment of this invention.
- the left part of the device of FIG. 5A is similar to that of figure 4.
- the device instead of dividing into several cylinders, flares in a fan 41, its end face comprising a system 42 of anti-removal lock of several wicks that can be inserted parallel.
- the present invention provides a device for particularly simple, reliable, adjustable and safe delay. Moreover, this device can be relatively low cost, can be manufactured in large series in plastic ...
- Figure 6 shows a sixth embodiment of the present invention in which the same pyrotechnic device delay may, at the option of the user, achieve one of several predetermined delays.
- This device comprises an internal tube 50, a tube intermediate 60 and an outer tube 70.
- the internal tube 50 like the tube 1 in FIG. 1, the tube 11 of figure 2 or the tube 21 of figure 3 has its walls internal coated with highly flammable material 2.
- This tube 50 is divided into two parts by an internal partition 51. It includes through openings 52 and 53 on either side of the partition.
- the intermediate tube 60 is a tube on the surface external of which several longitudinal tracks 61, 62, 63 are formed in the example shown, the ends of which have openings 61-1, 61-2, 62-1, 62-2 and 63-1, 63-2. These openings pass through the tube 60.
- the device comprises an external tube 70 of protection.
- the outer tube 70 is mounted fixed relative to the tube intermediate 60 which can rotate relative to the internal tube 50.
- Various means may be provided so that, after assembly, the inner tube can rotate relative to the intermediate tube while being held axially.
- a first mark 54 is formed on the outer edge of the inner tube, which is for example slightly longer than the intermediate tube, to facilitate its gripping and setting rotation.
- the intermediate tube is provided with second marks, preferably at its two ends, respectively 61-0, 62-0 and 63-0.
- a track 65 extends between the ends of the tracks 61, 62, 63 on the side opposite the side where ignition normally occurs. So, once a track has been lit and has played its delay, ignition spreads to other tracks and powder they contain is burnt, which prevents the device, once used, may present any danger.
- FIG. 7 represents a variant of the sixth mode of realization of the present invention.
- paired openings 56, 57, 58 are provided intended to cooperate with corresponding openings of the tube intermediate.
- the openings in the intermediate tube can be those represented in figure 6. It can also be the openings of a helical track 71 shown in FIG. 7.
- the benchmarks must be identified. Preferably they will identified by the same colors or the same indications.
- This sixth embodiment of the present invention may appear more complex than the embodiments described previously.
- the cost of manufacturing such a device will be weaker than the others because it could be manufactured in very large series, the same device can be used to achieve various delays. Besides, it will no longer arise, for the user, the problem of having to store ranges of delay devices.
- the present invention is capable of various variants and modifications which will appear to the man of art.
- the various embodiments described can be combined; for example the multi-connection systems of FIGS. 4 and 5 can be adapted to the first embodiment of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighters Containing Fuel (AREA)
- Fuses (AREA)
- Air Bags (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Catching Or Destruction (AREA)
- Spray Control Apparatus (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Electronic Switches (AREA)
Abstract
Description
Claims (10)
- Dispositif pyrotechnique de connexion et de retard entre mèches et/ou entre allumeur et mèches, caractérisé en ce qu'il comprend :une cavité divisée en deux parties (6, 7 ; 13, 14 ; 23, 24) dont les parois internes (2) sont revêtues d'un matériau très inflammable ;des moyens (3 ; 30) de blocage d'une ou plusieurs mèches dans chacune des parties ; etdes moyens de communication entre les deux parties.
- Dispositif pyrotechnique selon la revendication 1, caractérisé en ce que les deux parties (13, 14 ; 23, 24) sont séparées par une cloison (15 ; 25) et en ce que les moyens de communication comprennent une piste (16 ; 26), contenant un matériau brûlant lentement et régulièrement, s'étendant à l'extérieur des parois de la cavité entre des orifices (17, 18 ; 27, 28) communiquant avec chacune des deux parties de la cavité.
- Dispositif pyrotechnique selon la revendication 2, caractérisé en ce qu'il comprend :un premier cylindre creux (11) dont la cavité interne est divisée en deux parties (13, 14 ; 23, 24) par une cloison (15 ; 25), et dont la paroi externe comporte une piste (16 ; 26) qui communique par des orifices (17, 18 ; 27, 28) avec lesdites parties ; etun deuxième cylindre creux (12) dont le diamètre interne correspond au diamètre externe du premier cylindre creux et dans lequel le premier cylindre est inséré.
- Dispositif pyrotechnique selon la revendication 2, caractérisé en ce qu'il comprend :un cylindre interne creux (50) dont la cavité interne est divisée en deux parties par une cloison (51) et dont la paroi externe comporte des ouvertures (52, 53 ; 56, 57, 58) ; etun cylindre intermédiaire creux (60) susceptible d'être monté coaxialement et à rotation à l'extérieur du cylindre interne, la paroi externe du cylindre intermédiaire comportant des pistes (61, 62, 63 ; 71) dont les extrémités communiquent par des orifices avec les ouvertures du cylindre intérieur, quand les cylindres sont convenablement orientés en rotation.
- Dispositif pyrotechnique selon la revendication 3 ou 4, caractérisé en ce que ladite piste (16 ; 71) s'étend hélicoïdalement.
- Dispositif pyrotechnique selon la revendication 3 ou 4, caractérisé en ce que la ou lesdites pistes (26 ; 61, 62, 63) s'étendent de façon rectiligne.
- Dispositif pyrotechnique selon l'une quelconque des revendications 3 à 6, caractérisé en ce que la ou lesdites pistes (16 ; 26) sont remplies d'une poudre inflammable tassée.
- Dispositif pyrotechnique selon la revendication 3 caractérisé en ce que, d'un côté, le premier cylindre se subdivise en plusieurs tubes (31, 34).
- Dispositif pyrotechnique selon la revendication 3 caractérisé en ce que, d'un côté, le premier cylindre s'évase en éventail (41).
- Dispositif pyrotechnique selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les moyens de blocage (3 ; 30 ; 42) comprennent des languettes en un matériau souple mais relativement solide, s'étendant sensiblement perpendiculairement à des ouvertures d'insertion de mèches, et susceptibles de se déformer vers l'intérieur lors de l'insertion d'une mèche pour bloquer une extraction de la mèche.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9910880 | 1999-08-24 | ||
FR9910880A FR2797947B1 (fr) | 1999-08-24 | 1999-08-24 | Dispositif pyrotechnique de connexion et de retard |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1079200A1 true EP1079200A1 (fr) | 2001-02-28 |
EP1079200B1 EP1079200B1 (fr) | 2004-10-13 |
EP1079200B9 EP1079200B9 (fr) | 2005-01-05 |
Family
ID=9549402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00410101A Expired - Lifetime EP1079200B9 (fr) | 1999-08-24 | 2000-08-23 | Dispositif pyrotechnique de connexion et de retard |
Country Status (6)
Country | Link |
---|---|
US (1) | US6499405B1 (fr) |
EP (1) | EP1079200B9 (fr) |
AT (1) | ATE279710T1 (fr) |
DE (1) | DE60014810T2 (fr) |
ES (1) | ES2228432T3 (fr) |
FR (1) | FR2797947B1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2839146A1 (fr) | 2002-04-29 | 2003-10-31 | Francesco Ambrico | Dispositif pyrotechnique de retard |
WO2014012816A1 (fr) * | 2012-07-18 | 2014-01-23 | Rheinmetall Waffe Munition Gmbh, Patente | Élément retardateur mécaniquement réglable |
WO2022069784A1 (fr) | 2020-10-02 | 2022-04-07 | Garcia Gamon Anton Fernando | Dispositif d'allumage pour multiples articles pyrotechniques |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030200891A1 (en) * | 2002-04-25 | 2003-10-30 | Yu Peter Sung Yan | Fireworks fuse connector |
ITGR20020002A1 (it) * | 2002-06-25 | 2003-12-29 | Carlo Monetti | Dispositivi per la realizzazione di catene piriche temporizzate con l'impiego di spolette o di spezzoni di miccia a lenta combustione di lun |
US6899033B2 (en) * | 2003-04-28 | 2005-05-31 | Jake's Fireworks, Inc. | Firecracker packaging |
US6916110B2 (en) * | 2003-05-29 | 2005-07-12 | Rene C. Batiste | Flame simulating devices for use with lights and method thereof |
DE20310900U1 (de) * | 2003-07-15 | 2003-10-02 | Voigt, Andreas, 09496 Marienberg | Anordnung zum Zünden und/oder Abfeuern pyrotechnischer Gegenstände und/oder Sätze |
ZA200703938B (en) * | 2007-05-16 | 2009-07-29 | Beijing Auxin Chemical Technol | Three-way connector block |
DE102007049070B4 (de) * | 2007-10-12 | 2010-04-08 | Weco Pyrotechnische Fabrik Gmbh | Rinnenartige Vorrichtung zur Verbindung mindestens zweier pyrotechnischer Leitungen und Feuerwerkskörperanordnung |
US20100300315A1 (en) * | 2007-12-03 | 2010-12-02 | Master Blaster Proprietary Limited | Multi-Port Transmission Line Connector |
CN102927854A (zh) * | 2012-11-07 | 2013-02-13 | 浏阳市达浒花炮艺术焰火燃放集团有限公司 | 一种烟花用环保内筒 |
DE102013012363B3 (de) * | 2013-07-25 | 2014-06-05 | Marc Speer | Beschichtete pyrotechnische Vorrichtung |
CN105387777B (zh) * | 2015-10-30 | 2017-09-05 | 山东大学 | 一种光面爆破间隔装药切缝管 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR353200A (fr) * | 1905-03-15 | 1905-09-05 | Harold Irwin | Avertisseur |
US2548946A (en) * | 1947-11-01 | 1951-04-17 | Kilgore Mfg Co | Pyrotechnic device |
US4166418A (en) * | 1977-05-23 | 1979-09-04 | Austin Powder Company | Time delay primer and method of making same |
DE19514122A1 (de) * | 1994-04-27 | 1995-11-02 | Junghans Gmbh Geb | Einrichtung zum Zünden oder Sprengen mehrerer Objekte |
Family Cites Families (13)
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US3169480A (en) * | 1962-05-01 | 1965-02-16 | Commercial Solvents Corp | Safety device for detonator cord |
US3368485A (en) * | 1966-04-08 | 1968-02-13 | Robert L. Klotz | Nonexplosive detonating fuse directional interrupter |
US3460477A (en) * | 1967-12-26 | 1969-08-12 | Explosive Tech | One-way detonation transfer device and assembly |
US4423682A (en) * | 1981-10-13 | 1984-01-03 | Mcdonnell Douglas Corporation | One-way explosive transfer assembly |
DE3614204A1 (de) * | 1986-04-26 | 1987-10-29 | Dynamit Nobel Ag | Sprengzeitzuender |
US4953464A (en) * | 1987-07-13 | 1990-09-04 | Atlas Powder Company | Multi-directional signal transmission in a blast initiation system |
US5086702A (en) * | 1990-04-12 | 1992-02-11 | Atlas Powder Company | Modular blasting system |
US5070789A (en) * | 1990-06-27 | 1991-12-10 | Cxa Ltd./Cxa Ltee | Electric exploding bridge wire initiators |
WO1993011089A1 (fr) * | 1991-11-27 | 1993-06-10 | Hadden William C | Matiere deflagrante a amorçage en surface |
US5192828A (en) * | 1992-03-13 | 1993-03-09 | The Ensign-Bickford Company | Detonating cord and blasting cap connector block having a resilient free end cord latch |
EP0703348B1 (fr) * | 1994-08-31 | 2003-10-15 | HALLIBURTON ENERGY SERVICES, Inc. | Dispositif utilisé pour la connection de perforateurs au fond de puits |
ZA958348B (en) * | 1994-10-21 | 1996-07-12 | Ensign Bickford Co | Universal isolation member and non-electric detonator cap including the same |
SE505912C2 (sv) * | 1995-12-20 | 1997-10-20 | Nitro Nobel Ab | Pyroteknisk laddning för sprängkapslar |
-
1999
- 1999-08-24 FR FR9910880A patent/FR2797947B1/fr not_active Expired - Fee Related
-
2000
- 2000-08-23 US US09/644,092 patent/US6499405B1/en not_active Expired - Fee Related
- 2000-08-23 ES ES00410101T patent/ES2228432T3/es not_active Expired - Lifetime
- 2000-08-23 EP EP00410101A patent/EP1079200B9/fr not_active Expired - Lifetime
- 2000-08-23 AT AT00410101T patent/ATE279710T1/de not_active IP Right Cessation
- 2000-08-23 DE DE60014810T patent/DE60014810T2/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR353200A (fr) * | 1905-03-15 | 1905-09-05 | Harold Irwin | Avertisseur |
US2548946A (en) * | 1947-11-01 | 1951-04-17 | Kilgore Mfg Co | Pyrotechnic device |
US4166418A (en) * | 1977-05-23 | 1979-09-04 | Austin Powder Company | Time delay primer and method of making same |
DE19514122A1 (de) * | 1994-04-27 | 1995-11-02 | Junghans Gmbh Geb | Einrichtung zum Zünden oder Sprengen mehrerer Objekte |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2839146A1 (fr) | 2002-04-29 | 2003-10-31 | Francesco Ambrico | Dispositif pyrotechnique de retard |
WO2003095934A1 (fr) * | 2002-04-29 | 2003-11-20 | Francesco Ambrico | Dispositif pyrotechnique de retard |
AU2003249387B2 (en) * | 2002-04-29 | 2008-11-06 | Francesco Ambrico | Pyrotechnic device with ignition delay |
WO2014012816A1 (fr) * | 2012-07-18 | 2014-01-23 | Rheinmetall Waffe Munition Gmbh, Patente | Élément retardateur mécaniquement réglable |
WO2022069784A1 (fr) | 2020-10-02 | 2022-04-07 | Garcia Gamon Anton Fernando | Dispositif d'allumage pour multiples articles pyrotechniques |
Also Published As
Publication number | Publication date |
---|---|
ATE279710T1 (de) | 2004-10-15 |
EP1079200B9 (fr) | 2005-01-05 |
ES2228432T3 (es) | 2005-04-16 |
DE60014810D1 (de) | 2004-11-18 |
FR2797947A1 (fr) | 2001-03-02 |
US6499405B1 (en) | 2002-12-31 |
EP1079200B1 (fr) | 2004-10-13 |
FR2797947B1 (fr) | 2001-11-16 |
DE60014810T2 (de) | 2006-03-09 |
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