AU7775598A - Device transportable by air for dropping or spraying liquid products - Google Patents
Device transportable by air for dropping or spraying liquid products Download PDFInfo
- Publication number
- AU7775598A AU7775598A AU77755/98A AU7775598A AU7775598A AU 7775598 A AU7775598 A AU 7775598A AU 77755/98 A AU77755/98 A AU 77755/98A AU 7775598 A AU7775598 A AU 7775598A AU 7775598 A AU7775598 A AU 7775598A
- Authority
- AU
- Australia
- Prior art keywords
- air according
- tank
- device transportable
- nozzle
- transportable
- 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.)
- Abandoned
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 25
- 239000012263 liquid product Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 18
- 239000003337 fertilizer Substances 0.000 claims abstract description 4
- 239000002917 insecticide Substances 0.000 claims abstract description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/0242—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft by spraying extinguishants from the aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention concerns a device transportable by air for dropping or spraying water or any other liquid product, such as for fire fighting, pollution control, fertiliser or insecticide application, comprising: a tank (2) containing water or a liquid product; removable means (11, 12) to be suspended under an aircraft such as a helicopter (13); means (10, 9) for contact and/or support on the ground (S). The invention is characterised in that it comprises a flexible conduit (3) whereof a first end is connected to a spraying nozzle (5) and a second end (7) is connected to the tank (2) and a winding engine or winch (15) for winding said flexible conduit (3).
Description
PCT/FR98/01020 Device transportable by air for dropping or spraying liquid products. The present invention concerns a device transportable by air for dropping or spraying liquid products (for example, water with or without the addition of products 5 appropriate to the interventions to be made). The technical field of the invention is that of firefighting, particularly of forest fires, with the device claimed also being used in other fields, such as spreading fertilizer or products to fight various types of pollution or insect infestation. 10 Known from document FR 2.737.853 A (held by MAISONNEUVE) is a device for firefighting, using an aircraft, such as a helicopter, which comprises a water tank, a pump for pressurization and propulsion of the water from the tank in a flexible conduit which extends and is suspended under the helicopter for a length or height of 15 several tens to several hundreds of meters; a spraying nozzle equips one end of the flexible conduit and enables the production of the primary jets, of supplemental or secondary jets as well as directional jets oriented differently to contribute to the positioning of the nozzle suspended from the helicopter by means of the flexible connection; the tank and the pump are arranged in the helicopter. 20 The device transportable by air described in the document necessitates special configuration of the helicopter to accommodate a tank and a pump; moreover, its use poses helicopter flight stability problems during the course of the emptying of the tank, as well as at the time of changes in attitude of the helicopter and at the time of takeoff 25 and landing of the aircraft equipped with the aforementioned device and its flexible conduit. Also known, for example, from documents DE 3.315.945 A, WO 94/28975 A, and WO 9423797 A are "heliportable" devices comprising a tank for a liquid product 30 adapted so as to be capable of being suspended from a helicopter, means for the evacuation of this liquid product under pressure, and spraying nozzles arranged below 2 PCT/FR98/01020 and virtually in contact with said tank, to discharge said liquid in the form ofjets or foam, with certain of these devices comprising a bearing structure equipped with skids for support on the ground. 5 These various devices have the major drawback requiring the helicopter to descend very close to the blaze, a situation which rules out all use of aircraft piloted by on board operators and makes remote control aircraft virtually unusable because of the high temperatures to which they would be exposed. 10 A first object of the invention is thus to overcome the drawback or inadequacies of the devices of the type of those described and depicted in the annexed documents. The solution to the problem posed consists in obtaining a device transportable 15 by air for dropping or spraying water or other liquid products, comprising: - an impermeable tank suitable for containing water or a liquid product; - removable means of suspending of this tank under an aircraft, such as a 20 helicopter, - means of contact and/or support or stabilization on the ground, with this device particularly noteworthy in that it comprises, on the one hand, a flexible 25 conduit of which a first end is connected to a spraying nozzle (by jets aimed toward the ground), and of which a second end is connected to the tank and, on the other hand, a winding engine or a winch for winding said flexible conduit, which is preferably made of a flexible "collapsible" hose of the type automatically assuming a flat shape when out of service, with the axis of rotation of this winch advantageously arranged below 30 the liquid product tank.
3 PCT/FR98/0100 Due to the invention, it is possible to drop or to discharge, at substantial rates of flow, various liquids, for example, for fighting forest fires or fires in urban or industrial environments, with the desirable safety conditions, with the helicopter or other aircraft capable of maneuvering at an altitude putting it outside the reach of the 5 heat and flames produced by the blaze, and above the smoke produced thereby. The device transportable by air for dropping or spraying water or other liquid products according to the invention operates without a pump or other similar pressurization device, and also has as advantages: 10 - relatively reduced weight; - simple, reliable operation; 15 - good hydraulic performance; - simplified maintenance; - moderate cost. 20 Documents WO 94 28975 A, FR 7.985.564 A, and FR 2.737.853 A describe devices for obtaining water jets or foam jets to extinguish fires. These devices do not combine the various conditions required for optimizing the results hoped for, in particular with regard to flow rate, the formation ofjets, and the stability of the nozzle. 25 Another object of invention is to overcome this unsatisfactory situation. According to another important characteristic arrangement, the device according to the invention comprises a nozzle consisting of a body in the distal part of 30 which is housed a core flared in the direction of the discharge of said body, with this flared core and the internal wall of the body which surrounds it demarcating a transit 5 PCT/FR98/01020 Fig. 7 is a front view of the winding engine or winch for winding this flexible hose. Fig. 8 is an axial cross-sectional view of a second preferred embodiment of a 5 spray nozzle suitable for use for the construction of the device according to the invention. Fig. 9 is an axial cross-sectional view of the end cap of this nozzle. 10 Fig. 10 is an front view of this end cap. Fig. 11 is a schematic depiction of the equations characterizing the surfaces of the body of the nozzle and its central core demarcating the transit pipe of variable cross-section. 15 Reference is made to said drawings to describe embodiments that are of interest but are by no means limiting of the device transportable by air for dropping or spraying liquid products according to the invention. 20 Referring to Figs. 1 and 2, the device 1 according to the invention comprises an impermeable tank 2 (of which the capacity is, for example, on the order of 1000 to 10,000 liters) suitable to contain water, possibly with the addition of an additive promoting the extinguishing of fires, or other products depending on the applications of the device (fertilizer, insecticide, and various pollutant controls, etc.); this tank 2 is, 25 for example, cylindrical and/or formed by revolution around the vertical axis 2a. The tank 2 communicates with a flexible conduit 3 connecting the discharge opening 25 provided in the bottom of the tank 2 to a spraying nozzle 5 arranged at the free end of the conduit 3; the second end 7 of the conduit 3 is connected by means of a 30 connector or a rotary joint 23 to a stationary conduit 24 (rigid or flexible) for connecting to the discharge opening 25 of the tank 2. This connecting conduit 24 is 6 PCT/FR98/0 1020 equipped with a valve 21, preferably motorized, the operation of which can be controlled by an operator or by the helicopter pilot, due to an electrical supply cable 28 thereof, equipped with a connector 27a for connecting to a complementary connector (not shown) equipping the helicopter accommodating the device transportable by air. 5 Advantageously, the flexible conduit 3 consists of a flexible hose which automatically assumes a flattened shape when it is not in service (for example, a flexible hose of the fire hose type). 10 This hose has, for example, a thickness on the order 2.5 mm, and its inside diameter can be comprised between 25 and 150 mm, preferably between 50 and 100 mm, with this inside diameter, for example, on the order of 65 mm. The length of this flexible conduit may vary as a function of the applications of 15 the spraying device transportable by air and of the diameter of said conduit. This length may, for example, be comprised between 50 and 150 meters. This flexible conduit makes it possible to ensure spraying due to gravity (the device according to the invention has no pump or other means of pressurization), by 20 using the pressure resulting from the height of the column of water or other liquid to be applied located inside said conduit and tank. The conduit 3 is capable of being wound on a winding engine or a winch 15 substantially consisting, in known fashion, of a central cylindrical hub 4, equipped at 25 each of its ends with a flange 18 in the shape of a perforated disk, with the conduit 3 capable of being wound around the central hub 4 and between said flanges 18 as depicted particularly in Fig. 7 and in Fig. 2 depicting said conduit 3 completely wound up, in the flattened state, in a plurality of interleaved and/or co-planar coils, i.e., in a single thickness; consequently, the distance between the flanges 18 is barely greater 30 than the width of the conduit 3 in the flattened state.
7 PCT/FR98/O 120 The rotational movement of the winding engine 15 around its substantially horizontal axis of rotation 17 occurs due to a rotary drive motor 16, which is preferably an electric motor connected to an electric power source equipping the helicopter, by means of a cable 28 equipped with an appropriate connector 27b; the 5 winding engine 15 is affixed on the framework of the tank. Advantageously, the winding engine 15 is installed below the tank 2 by means of bearing surfaces 22 affixed to the bottom horizontal elements 8a of the outside framework 8 of the tank 1. Thus, the axis of rotation 17 of the winding engine 15 is 10 arranged below the tank 2. Furthermore, the mid-plane of the winding engine coincides with one of the vertical mid-planes of the tank 2, while the axis of rotation 17 of said winding engine is arranged in the vertical mid-plane of the latter, perpendicular to the former. 15 Thus, the masses of the device are perfectly distributed and do not cause any imbalance. Moreover, in the preferred case in which the device according to the invention (which is essentially in one piece) is attached and suspended approximately vertical to 20 the center of gravity 14 of the helicopter and/or within the extension of the axis of rotation of the primary rotor of the helicopter, flight stability is even more improved. The configuration just described enables dropping or spraying water or another liquid product, by gravity, with a spreading flow rate which can be comprised between 25 100 and 1000 liters per minute, for example, on the order of 400 to 600 liters per minute. The assembly of these essential components of the device is affixed to a structure or framework 8 substantially in the form of a frame surrounding at least part 30 of the tank 2; this structure has, at the bottom, legs 10 (for example, three or four in number) ending in feet or skids 9 enabling the device to rest stably on the ground S, as 9 PCT/FR98/01020 of a body 30 demarcated by an outside cylindrical surface with, for example, a constant cross-section and with a longitudinal axis 36, for example, common to the outside surface of the body 30 and to its inside surface. The inside surface of the body 30 comprises a proximal end 32 threaded for coupling the nozzle to the flexible conduit 5 (not shown) through the intake opening 33 of the nozzle. Said inside surface also comprises a slightly convergent portion 31 followed by a convergent wall portion 34 followed in turn by a divergent inside wall portion 35; all of these walls 31, 34, 35 thus form a nozzle or a venturi nozzle with a longitudinal axis 36. 10 A central core 38, preferably formed by revolution, with an axis 36 one and the same as the longitudinal axis of the body 30, is coaxially housed inside the distal part of said body, with the outside walls 41 of this core demarcating, along with the various portions of the inside wall of the body 30, transit pipes (preferably formed by revolution on axis 36) which are successively referenced 37, 42, 43, 44 and enable the 15 guidance of the jet of fluid flowing into the nozzle from the intake opening 33 to the discharge opening 39, and the production ofjets 6 (aimed toward the ground) in an optimal manner. The ratio of the cross-section of the intake opening 33 to the cross-section of 20 the discharge opening 39 of the nozzle 5 is, for example, comprised between 2 and 4. As depicted in particular in Fig. 4, the core 38 is stationary and held in position relative to the body 30 of the nozzle by three sectioned fins 40 arranged radially at 120 degrees around the longitudinal axis 36 (or the axis of symmetry) of the nozzle. These 25 mechanical linking fins permit reducing the obstacles present in the transit stream of sprayed liquid and consequently reducing pressure losses, and also increasing the flow available for a specific height of water. Figs. 8 through 10 depict another advantageous and preferred embodiment of 30 the spraying nozzle according to the invention.
10 PCT/FR98/01020 In these figures, the identical members or those filling the same functions as those in the embodiment depicted in Figs. 3 and 4 are identified by the same reference numbers. 5 According to this embodiment, the body 30 is connected to the distal end of the flexible conduit 3 (not shown) by means of a reducing cone 29 mounted on the proximal end of said body, for example, by screwing. The inside wall of the body 30 and the lateral surface of the core 38 coaxially 10 housed inside said body demarcate, as for the exemplary embodiment previously described, a transit pipe with a variable cross-section comprising, from upstream to downstream, a cylindrical stretch 37, a stretch with a decreasing cross-section 42, a stretch with a contracted cross-section 43, and a stretch with an increasing cross section 44. 15 The central core 38 is affixed inside the body 30 by means of a cap 45 with a lateral surface 46 and a bottom 47, with this cap 45 covering the distal end of the body 30. The bottom 47 of the cap 45 has arched slits 48 positioned in correspondence with the discharge passage 44 of the body 30, and it is affixed on said body 30 by means of 20 screws depicted by the lines of axis 49 of Fig. 8. The central core 38 is affixed on the inside surface of the bottom 47 of the cap 45 by means of an axial screw 50. 25 The contact surfaces of the central core 38 and of the cap 45 comprise a central cylindrical tenon 47a, on, for example, the bottom 47 of the cap 45 and a central cylindrical mortise 38a, with which, for example, the base of the central core 38 is provided and into which said tenon can slip, so as to permit slight axial displacement of said central core, for example, on the order of I to 2 mm, by means of the screw 50. 30 This arrangement permits the adjustment of the axial position of the central core 38 relative to the body 30, which makes it possible to alter the flow rate and the shape of l l PCT/FR98/01020 the jet. Around the proximal part of the body 30, a counter jet part 51 is arranged, demarcating, around said proximal part, an annular chamber 52 communicating with 5 the inside of the body 30, by means of a plurality of radial orifices 53 (for example, three or four in number) arranged in the lateral wall thereof. The proximal portion of the counter jet part 51 or the outside wall of the chamber 52 is provided with a plurality of channels 54 opening to the outside and 10 oriented obliquely relative to the axis 36 of the nozzle, in the direction of the proximal end thereof, i.e., upward, considering the very advantageous application to devices transportable by air for fighting forest fires or other fires. The counter jet part 51 is, for example, provided with three or four channels 54 of regularly spaced counter jets oriented at an angle on the order of 10" relative to the axis 36 of the nozzle. 15 The nozzle according to the invention permits spraying water in the form of droplets, having the least possible reactive force for a substantial flow rate. The water flows into the cylindrical body. Most of it is transformed into 20 droplets by the complementary shapes of the core 38 and the body 30. Another part of the water supplies, by means of the radial openings 53, the counter jet chamber 52. The counter jet channels 54 make it possible: - to create a counter reactive force which opposes the force generated by 25 spraying water; - to create a water mist which makes it possible to cool the hose above the flames, in the application of the device to firefighting by means of aircraft, such as helicopters. 30 The shapes of the core, of the cylindrical body, as well as the counter jet part, 12 PCT/FR98/01020 enable the significant reduction of the force of reaction to the spraying of water. Thus, the nozzle holds itself automatically in the vertical position at the end of a flexible conduit with a flow rate of 500 liters/minute. 5 The noteworthy performances of the spraying nozzle according to the invention are obtained by the very precise geometric definition of its variable surfaces identified by the references S1, S2, S3 and S4 in Fig. 11. The internal functional surfaces S 1, S2, S3 and S4 are surfaces of revolution 10 and are defined by specific equations. The surfaces SI and S2 define the interior of the cylindrical body. The surfaces S3 and S4 define the core. 15 The intake diameter (corresponding to the outside diameter of the cross-section of water transit), identical to the discharge diameter, can be comprised between 10 and 150 millimeters, preferably about 45 millimeters. 20 The 45 millimeter diameter nozzle is defined by the following four equations: The back axis x is the axis of the nozzle. Definition of the cylindrical body 25 4 Surface SI (x comprised between [0,63]): y = 2 2 .5-0.005 4 4 218*x 2 +0.000057589*x3 30 b Surface S2 13 PCT/FR98/01O20 (x comprised between [63,90]): y = 15 2 .5-5.
4 4 4 4 51*x+0.0691359*X2_ 0.000274349*x 3 Definition of the core 5 4 Surface S3 (x comprised between [18,72]: y = 0.123*(x-18)+0.0023889*(x-18)2-6.8587*1
O(
7 )*(x 18)3 10 4 Surface S4 (x comprised between [72, 90]: y = 54-3 *(x- I 8)+0.06250*(x- 18)2 -3.85802*10 ( 4 )*(x 18)3 15 The nozzle definition for different diameters (corresponding to the outside diameter of the cross-section of water transit), for example, between 10 and 150 millimeters, is obtained similarly from the equations of the 45 millimeter nozzle. 20 The interesting performances of the nozzle according to the invention make it possible to design its use on other devices transportable by air for applying or spraying water or other liquid products, or even with spraying equipment operating from the ground.
Claims (15)
1. Device transportable by air for dropping or spraying water or another liquid product, for example, for firefighting, spreading fertilizer, insecticides, 5 pollution control, comprising: - a tank (2) suitable to contain water or a liquid product; - removable means (11, 12) to be suspended under an aircraft, such as a 10 helicopter (13); - means (10, 9) for contact and/or support or stabilization on the ground (S), 15 characterized in that it comprises, on the one hand, a flexible conduit (3) whereof a first end is connected to a spraying nozzle (5) and a second end (7) is connected to the tank (2) and, on the other hand, a winding engine or winch (15) for winding of said flexible conduit (3). 20
2. Device transportable by air according to claim 1, characterized in that the axis of rotation (17) of the winding engine (15) is arranged below the tank (2), preferably in a vertical mid-plane of said tank.
3. Device transportable by air according to one of claims I or 2, characterized in that the mid-plane of the winding engine (15) coincides with one of the vertical mid-planes of the tank (2). 15 PCT/FR98/olI 20
4. Device transportable by air according to any one of claims I through 3, characterized in that the winding engine or winch (15) is driven in rotation by an electric motor (16). 5
5. Device transportable by air according to any one of claims 1 through 4, characterized in that the proximal end (7) of the flexible conduit (3) is connected to the discharge opening (25) of the tank (2) by means of a stationary conduit (24) and a rotary joint (23). 10
6. Device transportable by air according to claim 5, characterized in that a motorized valve (21 ) is arranged between the tank (2) and the rotary joint (23), for example, on the stationary connecting conduit (24).
7. Device transportable by air according to any one of claims 1 through 6, characterized in that the flexible conduit (3) consists of a flexible hose of the type automatically assuming a flat shape when it is out of service.
8. Device transportable by air according to claim 7, characterized in that the flexible hose has a thickness on the order of 2.5 mm and an inside diameter comprised between 25 and 150 mm, preferably between 50 and 100 mm, with this inside diameter being, for example, 65 mm.
9. Device transportable by air according to any one of claims I through 8, characterized in that the tank (2) is equipped with a vent (19) at its top. 5
10. Device transportable by air according to any one of claims 1 through 9, of which the spraying nozzle (5) comprises a body (30) in the distal part of which is housed a central core (38), characterized in that this central core (38) has a shape flared in the direction of the discharge of said body, with this flared core (38) and the inside wall (31, 34, 35) of the body (30) which surrounds it demarcating a transit pipe with a variable cross-section, comprising, from 16 PCT/FR98/01020 upstream to downstream, a stretch with a decreasing cross-section (42), a stretch with a contracted cross-section (43), and a stretch with an increasing cross-section (44). 5
11. Device transportable by air according to claim 10, characterized in that it comprises a means for adjusting (47a, 38a, 50) the axial position of the flared core (38).
12. Device transportable by air according to one of claims 10 or 11, characterized 10 in that an annular chamber (52) communicating with the inside of the body (30) of the nozzle is arranged around the proximal part of said body, with the outside wall (51) demarcating this chamber provided with a plurality of channels of counter jets (54) opening to the outside and oriented obliquely relative to the axis (36) of the nozzle, in the direction of the proximal end 15 thereof.
13. Device transportable by air according to claim 12, characterized in that the channels of counter jets (54) are inclined on the order of 100 relative to the axis (36) of the nozzle (5). 20
14. Device transportable by air according to any one of claims 10 through 13, characterized in that the body (30) of the nozzle (5) is connected to the distal end of the flexible conduit (3) by means of a reducing cone (29). 25
15. Device transportable by air according to one of claims 10 or 11, characterized in that the central core (38) is affixed in the body (30) by means of a cap (45) covering the distal end thereof, with the bottom (47) of this cap (45) provided with arched slits (48) positioned in correspondence with the discharge passage (44) of the body (30), said central core affixed by means of an axial screw (50) 30 on the inside face of the bottom (47), and in that the contact surfaces of the central core (38) and of the bottom (47) of the cap (45) comprise, respectively,
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9706495 | 1997-05-21 | ||
| FR9706495A FR2763510B1 (en) | 1997-05-21 | 1997-05-21 | AIRPORT FIRE FIGHTING DEVICE |
| PCT/FR1998/001020 WO1998052647A1 (en) | 1997-05-21 | 1998-05-20 | Device transportable by air for dropping or spraying liquid products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU7775598A true AU7775598A (en) | 1998-12-11 |
Family
ID=9507296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU77755/98A Abandoned AU7775598A (en) | 1997-05-21 | 1998-05-20 | Device transportable by air for dropping or spraying liquid products |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0984816B1 (en) |
| JP (1) | JP2002513328A (en) |
| AT (1) | ATE231405T1 (en) |
| AU (1) | AU7775598A (en) |
| BR (1) | BR9809849A (en) |
| CA (1) | CA2289601A1 (en) |
| DE (1) | DE69810923D1 (en) |
| FR (1) | FR2763510B1 (en) |
| WO (1) | WO1998052647A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000032275A1 (en) * | 1998-11-30 | 2000-06-08 | Dostovalov Viktor Alexandrovic | Improvements to fire-fighting techniques |
| US6889776B2 (en) * | 2000-08-08 | 2005-05-10 | The University Of Hong Kong | Airborne water diffuser |
| JP2009269493A (en) * | 2008-05-08 | 2009-11-19 | Yamaha Motor Co Ltd | Unmanned helicopter |
| WO2010145006A1 (en) * | 2009-06-15 | 2010-12-23 | Aerial X Equipment | Aerial distribution system |
| WO2011113144A1 (en) * | 2010-03-17 | 2011-09-22 | Ascent Helicopters Ltd. | Aerial fire suppression system |
| RU2444389C1 (en) * | 2010-09-02 | 2012-03-10 | Федеральное государственное учреждение Всероссийский ордена "Знак Почета" научно-исследовательский институт противопожарной обороны МЧС России (ФГУ ВНИИПО МЧС России) | Method to extinguish forest fires and helibucket |
| CN102451535A (en) * | 2010-10-25 | 2012-05-16 | 薛玉良 | Large fire extinguishing device |
| ES2548189B1 (en) * | 2014-03-13 | 2016-07-19 | Lluis Alvarez Montaner | Fire extinguishing device for aerial use |
| US9555886B1 (en) | 2014-04-22 | 2017-01-31 | Oubada Hawass | Multi-modular aerial firefighting control method and apparatus |
| JP2017149356A (en) * | 2016-02-26 | 2017-08-31 | 中日本航空株式会社 | Scattering device and opening cover |
| ES2722350A1 (en) * | 2018-02-09 | 2019-08-09 | Garcia Bascunana Jose Antonio | RAIN GENERATOR DEVICE FOR HELICOPTER AS A MEANS OF EXTINGUISHING AND DECONTAMINATOR (Machine-translation by Google Translate, not legally binding) |
| GB2582986A (en) * | 2019-04-12 | 2020-10-14 | Cannas John | Firefighting system |
| AU2020423319A1 (en) * | 2020-01-17 | 2022-09-08 | Helitak Fire Fighting Equipment Pty Ltd | Helicopter retractable tank assembly |
| DE102021005879A1 (en) | 2021-11-27 | 2023-06-01 | Alfred Leute | Extinguishing system for firefighting |
| KR102467708B1 (en) * | 2022-07-22 | 2022-11-16 | 에이지테크 주식회사 | Volume-adjustable bellows water tank |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR798564A (en) * | 1933-09-22 | 1936-05-20 | Feuerwehrgerate U Spritzenfabr | Device for obtaining water jets or fire extinguisher foams |
| DE3315945A1 (en) * | 1983-05-02 | 1984-11-08 | Herbert 3000 Hannover Grams | Device for spraying fluids in a controlled fashion using an aircraft |
| US5385208A (en) * | 1993-04-13 | 1995-01-31 | Baker; R. Arnold | Airborne fire suppressant foam delivery apparatus |
| NO303766B1 (en) * | 1993-06-10 | 1998-08-31 | Lufttransport As | Fire extinguishing device |
| FR2737853B3 (en) * | 1995-08-18 | 1997-10-31 | Maisonneuve Alban De | FIRE FIGHTING METHOD AND DEVICE |
-
1997
- 1997-05-21 FR FR9706495A patent/FR2763510B1/en not_active Expired - Fee Related
-
1998
- 1998-05-20 AT AT98925764T patent/ATE231405T1/en not_active IP Right Cessation
- 1998-05-20 BR BR9809849-7A patent/BR9809849A/en not_active Application Discontinuation
- 1998-05-20 AU AU77755/98A patent/AU7775598A/en not_active Abandoned
- 1998-05-20 JP JP55006098A patent/JP2002513328A/en active Pending
- 1998-05-20 WO PCT/FR1998/001020 patent/WO1998052647A1/en active IP Right Grant
- 1998-05-20 DE DE69810923T patent/DE69810923D1/en not_active Expired - Lifetime
- 1998-05-20 EP EP98925764A patent/EP0984816B1/en not_active Expired - Lifetime
- 1998-05-20 CA CA002289601A patent/CA2289601A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0984816A1 (en) | 2000-03-15 |
| FR2763510A1 (en) | 1998-11-27 |
| EP0984816B1 (en) | 2003-01-22 |
| ATE231405T1 (en) | 2003-02-15 |
| DE69810923D1 (en) | 2003-02-27 |
| WO1998052647A1 (en) | 1998-11-26 |
| CA2289601A1 (en) | 1998-11-26 |
| BR9809849A (en) | 2000-06-27 |
| JP2002513328A (en) | 2002-05-08 |
| FR2763510B1 (en) | 1999-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |