WO2009080977A2 - Dispositif de déclenchement d'avalanches - Google Patents
Dispositif de déclenchement d'avalanches Download PDFInfo
- Publication number
- WO2009080977A2 WO2009080977A2 PCT/FR2008/052254 FR2008052254W WO2009080977A2 WO 2009080977 A2 WO2009080977 A2 WO 2009080977A2 FR 2008052254 W FR2008052254 W FR 2008052254W WO 2009080977 A2 WO2009080977 A2 WO 2009080977A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- enclosure
- gas
- supply
- opening
- mixture
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
Definitions
- the invention relates to a device for triggering avalanches and in particular avalanches of snow.
- a device for triggering avalanches and in particular avalanches of snow is particularly used for the protection of sites such as transport infrastructure, ski areas or inhabited areas, especially after heavy snowfall, by triggering avalanches.
- a first technique consists of having an explosive charge deposited by an operator on the slope where the avalanche is to be caused.
- the installation of the explosive in the slope can be carried out according to two methods, namely launch, from the ground or a helicopter, and the sliding of loads.
- As regards the charging of the charge it is conventionally carried out using a slow wick or electrically.
- Remote triggering techniques have been put in place to prevent firefighters from moving around the firing range.
- the objective is to move the firing point away from the firing point, that is to say from the location of the firing at the moment of its explosion.
- a remote triggering device is known as CATEX. It is a carrier cable mounted on a fixed infrastructure, for bringing an explosive to a predetermined firing area and accessible by the carrier cable.
- CATEX is a carrier cable mounted on a fixed infrastructure, for bringing an explosive to a predetermined firing area and accessible by the carrier cable.
- Such a solution while limiting the risks for the operator, allows to trigger avalanches only in areas served by the cable.
- such a technological solution involves the transport and storage of explosives, which requires meeting strict security criteria.
- the installation of a long-distance carrier cable remains very expensive.
- GAZEX Another device is known as GAZEX. This is described in document FR 2,636,729. It comprises a closed-bottomed barrel having a front mouth open towards the snowpack. It further comprises a supply circuit for an oxidizing gas and a fuel gas supply circuit, the two gases coming from two separate sources. Nozzles for filling the barrel with these gases are arranged on various zones of the barrel and an ignition device is mounted at the rear of the latter.
- the explosive gas mixture consisting for example of propane and oxygen, is formed in the barrel, the explosion being caused by the ignition device. More specifically, the barrel has the general shape of a neck, the explosive gas mixture having a higher density than air and thus accumulating in the lower part of the barrel without escaping through the open front mouth.
- This device although having proved effective, must be mounted in a fixed manner in the risk zone. It is therefore not transportable easily, which requires the mounting of a device on each firing zone.
- US Pat. No. 4,873,928 describes a device for generating a shock wave by exploding an explosive gas contained in a balloon.
- the device comprises an expandable balloon, a device for filling the balloon with an explosive mixture of oxygen and hydrogen, and an ignition device for triggering the explosion.
- the document EP 1 031 008 describes a similar device in which the balloon is simply fixed on a support, the tip turned downwards, so that during inflation, the balloon is directed upwards.
- WO 2007/096524 proposes a transportable avalanche triggering device whose explosion is mainly directed towards the snowpack, requiring neither the transport nor the storage of explosives, and whose use complies with the various national laws.
- This comprises a chassis equipped with hooking means for transporting the device, in particular by a helicopter using a rope, the chassis comprising, at the top, a storage area of at least one fuel tank. gas intended to form an explosive mixture and, in the lower part, a device for supporting a plurality of elastic balloons each having an inflation nozzle turned towards the upper part, the body of each balloon extending in the opposite direction, the balloons being offset from one another.
- This device further comprises means for feeding the explosive mixture facing the inflation nozzle of a balloon, an injection nozzle, means for igniting the explosive mixture, means being provided for successively bringing the nozzle injection and ignition means facing the inflation tip of each balloon.
- Such a device is transportable on different shooting zones above the snowpack, to cause an explosion avalanche of a balloon located at the bottom of the device. The explosion is thus directed mostly towards the snowpack.
- this device does not require the transport of explosives, the explosive mixture is created on site before firing, which allows to respect a safe distance.
- this device being equipped with several balloons, it is possible to perform a series of explosions, which allows either to guarantee the triggering of an avalanche by repeating a first shot without effect, or to be able to trigger several avalanches in different areas, without having to recharge the device.
- the envelope for containing the mixture until the explosion can cause problems of inflation or premature bursting.
- such devices despite the use of several balloons, require frequent recharging of the system.
- the mechanical systems necessary for the operation of the device are also potentially fragile or sources of problems in the conditions of use (cold, frost, ).
- the invention aims to overcome the aforementioned drawbacks, by proposing a more reliable avalanche release device and a large autonomy.
- the avalanche triggering device comprises at least one containment chamber for an explosive gas mixture having a downward opening, equipped with gas supply means, designed to fill, at least in part, the volume delimited by the enclosure with the gaseous explosive mixture of a density lower than that of air, the device further comprising means for igniting this mixture, characterized in that the enclosure has a general shape of bell or frustoconical, of substantially vertical axis.
- the enclosure is gradually filled with an explosive mixture of gas that tends to accumulate in the upper part of the enclosure, because of its lower density than air.
- the explosion is then obtained using the ignition means and the expansion of the gases due to the explosion causes a shock wave, the latter being mainly directed downwards towards the snowpack.
- the reliability of such a device is increased by the fact that its operation does not require a complex mechanical system or balloon intended to be inflated with the explosive gas mixture.
- the shape of the enclosure as well as the density of the gas allow a confinement of the gas in the enclosure for a period of time and in relatively large proportions, sufficient to achieve the explosion in good conditions and with a significant effect on the snowpack.
- the volume of the chamber is between 0.5 and 10 m 3 , preferably of the order of 1 m 3 .
- the ignition means comprise at least one spark plug, preferably two spark plugs powered by a high voltage circuit.
- the ignition means are arranged on the side of the end of the enclosure opposite to the opening.
- the device comprises remote control means, for example radio control type control means, designed to control the gas supply means and the ignition means.
- the enclosure comprises, at an end opposite its opening, a generally dome-shaped end wall.
- the dome shape increases the resistance of the enclosure to the explosion.
- the device comprises suspension means, for example to a helicopter or means for fixing to a fixed structure.
- the enclosure comprises a reduction of its section so as to define, from top to bottom, a convergent zone and a divergent zone, making it possible to increase the speed of ejection of the gases.
- the increase in the speed of ejection of the gases makes it possible to increase the impact of the explosion on the snowpack.
- the supply means comprise at least one injection nozzle disposed on the side of the end of the enclosure opposite the opening and oriented toward this end.
- the gas supply means comprise means for storing an oxidizing gas, for example oxygen, and means for storing a combustible gas, for example hydrogen.
- the device according to the invention allows the transport of two gases which, when they are not mixed, do not have explosive properties, so that the risks related to transport are reduced.
- the gas supply means comprise a first fuel gas supply circuit and a second circuit, distinct from the first, supplying combustion gas, opening distinctly into the enclosure, the mixture of the two gases being produced in the volume defined by the confinement enclosure so as to form an explosive gas mixture.
- the separate supply of the two gases makes it possible to simplify the supply circuit by avoiding producing a separate mixing chamber before insertion into the enclosure. According to the aforementioned characteristic, the gas mixture is thus produced directly in the volume of the enclosure. In addition, this independence of the supply circuits makes it possible to generate the desired gas mixture, preferably close to the stoichiometry, depending in particular on the characteristics of the shot to be made.
- the fuel gas storage means and the combustion gas storage means are respectively connected to a first and a second injection nozzle via a first and a second supply pipe each comprising, from upstream to downstream, at least one expander, at least one solenoid valve and at least one nonreturn valve.
- Each supply line is therefore equipped with separate control means, formed by the solenoid valves.
- the regulators can be adjusted to a determined pressure, depending on the desired speed of filling the chamber with the explosive gas mixture.
- the high pressure gas supply makes it possible to reduce the filling time of the device before explosion.
- the non-return valve makes it possible to avoid a possible return of flame in the corresponding pipe.
- At least one of the supply lines comprises two expander.
- At least one of the supply lines preferably the first supply line for the fuel gas such as hydrogen, comprises two solenoid valves.
- At least one of the supply lines comprises at least one calibrated orifice disposed between the expander and the corresponding solenoid valve.
- the device comprises a pressure sensor designed to detect the pressure of the means for storing at least one gas.
- the supply means are designed to be able to control the supply of the enclosure with only oxidizing gas, so as to saturate the enclosure with oxidizing gas.
- the chamber may be filled with a non-explosive gas mixture, saturated with oxidizing gas, for example oxygen, so as to secure or neutralize the device when the chamber has been filled and the procedure is interrupted before explosion .
- oxidizing gas for example oxygen
- the gas storage means comprise a plurality of bottles mounted regularly distributed around the periphery of the enclosure.
- the device comprises measuring means designed to determine the distance between the device and the ground.
- the device comprises at least one movable flap between a first position in which the opening of the enclosure is obstructed by the flap, at least in part, and a second position in which the flap is separated from the flap. opening of the enclosure.
- the flap makes it possible to limit the discharges of gaseous explosive mixture out of the enclosure.
- the presence of such a flap is of course optional, since the shape of the enclosure alone can guarantee such a containment function.
- Figure 1 is a view of a helicopter equipped with a device according to the invention
- Figure 2 is a perspective view, from the front, of a first embodiment of this device;
- Figure 3 is a longitudinal sectional view on an enlarged scale of an enclosure of this device;
- Figure 4 is a perspective view from the rear
- Figure 5 is a schematic representation of the supply means of this device
- Fig. 6 and 7 are views corresponding to Fig. 3, respectively of second and third embodiments of an enclosure
- FIG. 8 is a schematic view of the entire device with an enclosure as shown in FIG. 6.
- FIG. 1 represents a helicopter 1 connected to an avalanche triggering device 2 according to the invention via a sling 3.
- the device 2 comprises a chamber 4 for containing a gaseous explosive mixture of generally frustoconical shape and made of steel, having a first end 5 facing downwards, that is to say in the direction of the snowpack, having an opening 6, and a second end 7 opposite to the first, having an end wall 8 convex or generally domed.
- a gaseous explosive mixture of generally frustoconical shape and made of steel, having a first end 5 facing downwards, that is to say in the direction of the snowpack, having an opening 6, and a second end 7 opposite to the first, having an end wall 8 convex or generally domed.
- the wall 8 is equipped with hooking means 9 connected to the sling 3 and is fixed detachably or not to the frustoconical wall January 1 of the enclosure 4.
- the enclosure 4 also comprises a reduction of its section so as to define, from top to bottom, a converging zone 12 and a diverging zone 13, making it possible to increase the speed of gas ejection.
- the chamber 4 has an internal volume of between 0.5 and 10 m 3 , preferably of the order of 1 m 3 .
- the chamber 4 is furthermore equipped with two feed nozzles 15,
- the supply nozzles 15, 16 are arranged symmetrically with respect to the longitudinal median plane P of the enclosure 4.
- the chamber 4 is furthermore equipped with two spark plugs 14 arranged at the level of the wall 8, symmetrically with respect to the longitudinal median plane P of the enclosure, and capable of providing a spark inside the latter.
- the candles 14 are each powered by a high voltage circuit not shown.
- the device comprises three bottles 17, 18, 19 with a capacity of 50 L and a pressure of 200 bar each.
- the bottles are regularly distributed and fixed on the outer wall of the enclosure 4 by means of a suitable support.
- each bottle 17, 18, 19 is connected, at its upper zone, to the chamber 4 by a retention cable for holding the bottle in case of breakage of the aforementioned fixing elements and / or a fixing error by an operator.
- These cables are oversized so that the bottles can be ejected in the event of an accident.
- First and second bottles contain hydrogen, a third bottle contains oxygen.
- Hoods 20 cover the areas of the enclosure located between the bottles and are fixed to the enclosure. The covers 20 are intended to protect electrical or pneumatic equipment and to promote the aerodynamics of the assembly.
- a protective skirt 54 is also disposed at the open end 5 of the enclosure 4.
- the skirt 54 is frustoconical in shape and flares downwardly. This skirt 54 prevents the gas contained in the chamber is sucked out by the winds created by the helicopter 1.
- the free end turned towards the bottom of the skirt is equipped with a protective arch 55.
- the device is equipped with measuring means designed to determine the distance between the device and the ground.
- the measuring means comprise a laser rangefinder 56 (see Figure 4), disposed on the outer wall of the chamber 4 and located opposite an open 57 formed in the skirt 54 and allowing the measurement.
- the covers 20 have not been shown in Figure 4, for reasons of legibility of the drawing.
- a first injection nozzle 15 is connected to the hydrogen bottles 17, 18 via a first supply line 21 comprising, from upstream to downstream, that is to say bottles 17, 18 to the first injection nozzle 15, a pressure sensor 22, a first expander 23, a second expander 24, a calibrated orifice 25, a first solenoid valve 26, a second solenoid valve 27 and a nonreturn valve 28.
- the bottles 17, 18 are connected in parallel and are connected to the corresponding pipe 21 by means of a high-pressure flexible lyre equipped with an anti-whip cable.
- a second injection nozzle 16 is connected to the oxygen cylinder 19 via a supply line 29 comprising, from upstream to downstream, that is to say from the bottle to the second injection nozzle, a pressure sensor 30, a first expander 31, a second expander 32, a calibrated orifice 33, a solenoid valve 34 and a nonreturn valve 35.
- regulators 23, 24, 31, 32 are preset. More particularly, the regulators are set to a pressure sufficient to ensure a filling of the chamber 4 with a shortest filling time possible, preferably of the order of 7 seconds.
- the nonreturn valves 28, 35 are stainless steel disc valves and make it possible to avoid possible backfire in the lines 21, 29.
- the nonreturn valves 28, 35 are positioned closer to the nozzles 15, 16 located on the enclosure 4.
- All the pipes 21, 29 is made of fireproof material.
- the control of the candles 14 and solenoid valves 26, 27, 34 is performed radially and automatically by a remote operator. More particularly, the operator uses a remote control or a radio-controlled console 58, cooperating with reception means housed in a housing 59 mounted on the enclosure 4. Additional control means 60 are mounted directly on the enclosure 4.
- the pressure sensors 22, 30 make it possible to detect the state of the oxygen and hydrogen reserves, the control means being able to transform this information into a signal visible to the operator.
- the helicopter first positions the avalanche triggering device 2 in the desired zone, at a predetermined distance from the ground, using the measuring means.
- the operator equipped with a remote control with two buttons so as to avoid the risk of inadvertent tripping, simultaneously and continuously presses the two buttons.
- the control means then open the solenoid valves 26, 27, 34 in order to fill the chamber 4 and thus the gas mixture. Since the density of the explosive gas mixture is lower than that of air, the latter tends to rise toward the closed end 7 of the enclosure. The volume of the explosive gas mixture delivered during filling is less than the volume of the enclosure. This makes it possible to limit the overflows of gaseous explosive mixture during the filling of the enclosure 4.
- the ignition of the gas by the candles 14 automatically follows the filling step and is controlled by the control means without intervention of the operator. This is called a semi-automatic firing procedure.
- the control means are also designed to accept possible microswitching of the signal, for example due to a momentary loss of radio waves, without influence on the shooting procedure.
- control means In case of release of at least one button before firing, which favors a reflex stop in case of possible problem, the control means automatically suspend the current shooting procedure while maintaining an alert message visible by the operator. In this case, and within a time limit of 30 seconds, the next continuous and simultaneous pressing of the operator on the two buttons automatically terminates the interrupted shooting procedure, that is to say that the control means proceeds to filling complement and ignition.
- control means have a subsidiary control for securing, if the operator wishes to evacuate the gaseous explosive mixture contained in the enclosure, to proceed with the filling of the enclosure by oxygen only, and for a period of the order of 30 seconds, so as to ensure the saturation of the chamber 4 oxygen, then burn the fuel gas residues contained in the enclosure by automatic ignition of the spark plugs 14.
- the control means prevent any new firing.
- control means incite by an alarm device to secure the aforementioned type of enclosure.
- the chamber 4 has a general shape of bell defining an internal volume of about 1 m 3 . More specifically, the enclosure comprises a frustoconical wall wall 1 1 and an end wall 8. The supply is made at a single point of the enclosure, via a connection 36 with two branches 37, 38 to which the oxygen and hydrogen supply lines 21, 29 are connected.
- the enclosure 4 is surmounted by a tubular element 39 having an end wall 40 at one end 41 and opening into the enclosure at the other end 42.
- the connection 36 with two branches is connected to the tubular element 39, the latter being equipped with candles 14 (not shown in this figure).
- the tubular element 39 makes it possible to create a chamber 43 located upstream of the enclosure 4, in which the gas injection is performed as well as the ignition.
- a chamber 43 limits the magnitude of the turbulence generated by the filling and the potential overflows by performing an injection in a reduced volume. It also makes it possible to better contain the gaseous explosive mixture, lighter than air, close to the spark plugs 14, while being less sensitive to external turbulence because this chamber is far from the opening 6 of the enclosure 4.
- the enclosure is equipped with movable flaps 44, 45 for obstructing, at least partially, the opening 6 of the chamber 4 during the filling phase. This variant embodiment is shown in FIG. 8 in combination with an enclosure 4 of the type shown in FIG.
- the enclosure 4 is equipped with a first and a second shutter 44, 45 arranged symmetrically with respect to the longitudinal median plane of the enclosure, the shutters being articulated on arms 46.
- movement of each flap 44, 45 is actuated by a rotary actuator 47 of single-acting type, powered by a neutral gas, for example argon.
- a bottle of neutral gas 48 having a capacity of 20 liters at 200 bar is connected to a supply line 49 equipped with a manometer 50 downstream of which first and second supply lines 51 extend. , 52 respectively connected to each of the rotary actuators 47 via a distributor 53.
- the distributors 53, and therefore the flaps 44, 45 are actuated by the aforementioned control means, either during a semi-automatic sequence. automatically, either independently by the operator.
- the flaps 44, 45 are thus movable between a first position in which they partially obstruct the opening 6 of the chamber 4 so as to limit the leakage of gaseous explosive mixture to the outside and a second position, in which they are spaced apart. of the opening 6, so as not to disturb the gas ejected during the explosion.
- the invention is not limited to the embodiments of this system, described above as examples, but it encompasses all variants.
- the enclosure may not be suspended from a helicopter but from a vehicle equipped with a crane or fixed to a fixed structure.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Air Bags (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010128249/03A RU2486462C2 (ru) | 2007-12-14 | 2008-12-09 | Устройство, инициирующее сход лавин |
ES08865406.6T ES2440540T3 (es) | 2007-12-14 | 2008-12-09 | Dispositivo de desencadenamiento de avalanchas |
EP08865406.6A EP2220454B1 (fr) | 2007-12-14 | 2008-12-09 | Dispositif de déclenchement d'avalanches |
US12/747,045 US8430032B2 (en) | 2007-12-14 | 2008-12-09 | Avalanche triggering system |
JP2010537495A JP2011506898A (ja) | 2007-12-14 | 2008-12-09 | 雪崩開始装置 |
CA2707034A CA2707034C (fr) | 2007-12-14 | 2008-12-09 | Dispositif de declenchement d'avalanches |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0708734A FR2925152B1 (fr) | 2007-12-14 | 2007-12-14 | Dispositif de declenchement d'avalanches |
FR07/08734 | 2007-12-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009080977A2 true WO2009080977A2 (fr) | 2009-07-02 |
WO2009080977A3 WO2009080977A3 (fr) | 2009-09-03 |
Family
ID=39714039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/052254 WO2009080977A2 (fr) | 2007-12-14 | 2008-12-09 | Dispositif de déclenchement d'avalanches |
Country Status (8)
Country | Link |
---|---|
US (1) | US8430032B2 (fr) |
EP (1) | EP2220454B1 (fr) |
JP (1) | JP2011506898A (fr) |
CA (1) | CA2707034C (fr) |
ES (1) | ES2440540T3 (fr) |
FR (1) | FR2925152B1 (fr) |
RU (1) | RU2486462C2 (fr) |
WO (1) | WO2009080977A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011070268A1 (fr) | 2009-12-10 | 2011-06-16 | Technologie Alpine De Securite -Tas | Dispositif de declenchement d'avalanches |
WO2011124854A1 (fr) | 2010-04-09 | 2011-10-13 | Technologie Alpine De Securite -Tas | Dispositif de déclenchement d'avalanche |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2897931B1 (fr) * | 2006-02-24 | 2008-05-09 | Technologie Alpine De Securite | Dispositif de declenchement d'avalanche |
US9347756B2 (en) * | 2010-04-26 | 2016-05-24 | Gavin Washburn | Non explosive process and device for triggering an avalanche |
FR2964732B1 (fr) * | 2010-09-14 | 2013-06-14 | Alp Artifices | Projectile pour declenchement d'avalanche |
RU2471141C1 (ru) * | 2011-05-04 | 2012-12-27 | Государственное Учреждение "Высокогорный Геофизический Институт" (Гу Вги) | Авиационный противолавинный комплекс |
US11333474B2 (en) * | 2016-08-07 | 2022-05-17 | Explosive Alternatives, Inc. | Apparatus and method for blasting |
WO2020234400A1 (fr) | 2019-05-21 | 2020-11-26 | Höhenarbeit Gmbh | Dispositif et procédé de déclenchement par détonation d'avalanches |
FR3101940B1 (fr) * | 2019-10-10 | 2021-10-15 | Tech Alpine De Securite Tas | Système de déclenchement d’avalanches |
FR3117581B1 (fr) | 2020-12-15 | 2022-11-25 | Patrice Margueron | Dispositif pour générer une onde de choc |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US4873928A (en) | 1987-06-15 | 1989-10-17 | Apti, Inc. | Nuclear-sized explosions without radiation |
AR245818A1 (es) * | 1988-03-03 | 1994-02-28 | Schippers Jacob | Dispositivo para desencadenar un alud. |
FR2636729B1 (fr) | 1988-09-19 | 1990-12-07 | Schippers Jacob | Procede et dispositif pour declencher une avalanche |
RU2107889C1 (ru) * | 1996-08-08 | 1998-03-27 | Российский федеральный ядерный центр - Всероссийский научно-исследовательский институт технической физики | Способ обрушения сооружений и устройство для его реализации |
FR2765321B1 (fr) * | 1997-06-26 | 1999-09-17 | Technologie Alpine De Securite | Dispositif de declenchement d'une avalanche |
FR2765320B1 (fr) * | 1997-06-26 | 1999-09-17 | Jacob Schippers | Dispositif pour provoquer la rupture d'une corniche de neige |
FR2771168B1 (fr) | 1997-11-17 | 1999-12-10 | Commissariat Energie Atomique | Procede de declenchement artificiel d'une avalanche et dispositif pour la mise en oeuvre de ce procede |
DE10125863A1 (de) * | 2001-05-25 | 2002-11-28 | Air Liquide Gmbh | Verfahren zum Mischen von Gasen und Gasmischer |
US7707938B2 (en) * | 2005-05-16 | 2010-05-04 | Hisel Stanley D | Apparatus and method for avalanche control |
FR2897931B1 (fr) | 2006-02-24 | 2008-05-09 | Technologie Alpine De Securite | Dispositif de declenchement d'avalanche |
-
2007
- 2007-12-14 FR FR0708734A patent/FR2925152B1/fr not_active Expired - Fee Related
-
2008
- 2008-12-09 US US12/747,045 patent/US8430032B2/en active Active
- 2008-12-09 RU RU2010128249/03A patent/RU2486462C2/ru active
- 2008-12-09 CA CA2707034A patent/CA2707034C/fr active Active
- 2008-12-09 EP EP08865406.6A patent/EP2220454B1/fr active Active
- 2008-12-09 ES ES08865406.6T patent/ES2440540T3/es active Active
- 2008-12-09 WO PCT/FR2008/052254 patent/WO2009080977A2/fr active Application Filing
- 2008-12-09 JP JP2010537495A patent/JP2011506898A/ja active Pending
Non-Patent Citations (1)
Title |
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None |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011070268A1 (fr) | 2009-12-10 | 2011-06-16 | Technologie Alpine De Securite -Tas | Dispositif de declenchement d'avalanches |
US8904939B2 (en) | 2009-12-10 | 2014-12-09 | Technologie Alpine de Securite—TAS | Avalanche-inducing device |
WO2011124854A1 (fr) | 2010-04-09 | 2011-10-13 | Technologie Alpine De Securite -Tas | Dispositif de déclenchement d'avalanche |
FR2958739A1 (fr) * | 2010-04-09 | 2011-10-14 | Technologie Alpine De Securite Tas | Dispositif de declenchement d'avalanche |
JP2013524156A (ja) * | 2010-04-09 | 2013-06-17 | テクノロジー アルピン デ セキュリテ−タ | なだれを引き起こす装置 |
US8960092B2 (en) | 2010-04-09 | 2015-02-24 | Technologie Alpine De Securite-Tas | Device for setting off an avalanche |
Also Published As
Publication number | Publication date |
---|---|
RU2010128249A (ru) | 2012-01-20 |
EP2220454A2 (fr) | 2010-08-25 |
FR2925152B1 (fr) | 2013-06-28 |
US8430032B2 (en) | 2013-04-30 |
JP2011506898A (ja) | 2011-03-03 |
CA2707034A1 (fr) | 2009-07-02 |
RU2486462C2 (ru) | 2013-06-27 |
EP2220454B1 (fr) | 2013-09-25 |
US20110139029A1 (en) | 2011-06-16 |
ES2440540T3 (es) | 2014-01-29 |
WO2009080977A3 (fr) | 2009-09-03 |
CA2707034C (fr) | 2016-05-31 |
FR2925152A1 (fr) | 2009-06-19 |
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