FR3128139A3 - SPRAYING SYSTEM COMPRISING A NOZZLE HOLDER WITH A REDUCED CHAMBER - Google Patents
SPRAYING SYSTEM COMPRISING A NOZZLE HOLDER WITH A REDUCED CHAMBER Download PDFInfo
- Publication number
- FR3128139A3 FR3128139A3 FR2110937A FR2110937A FR3128139A3 FR 3128139 A3 FR3128139 A3 FR 3128139A3 FR 2110937 A FR2110937 A FR 2110937A FR 2110937 A FR2110937 A FR 2110937A FR 3128139 A3 FR3128139 A3 FR 3128139A3
- Authority
- FR
- France
- Prior art keywords
- nozzle
- chamber
- spraying
- nozzle holder
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
- B05B1/083—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators the pulsating mechanism comprising movable parts
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
- B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
- A01M7/006—Mounting of the nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
- Special Spraying Apparatus (AREA)
Abstract
La présente invention concerne un système de pulvérisation comprenant un porte buse sur lequel est montée une buse de pulvérisation, un circuit d’alimentation en eau relié audit porte buse et une unité de pilotage de ladite buse capable de faire varier le débit de la buse en modulant une durée d’ouverture lors d’un cycle l’ouverture/fermeture de ladite buse, dans lequel ledit porte buse comprend une chambre servant de réservoir et apte à acheminer l’eau du circuit d’alimentation jusqu’à la buse, ladite chambre présentant un volume d’encombrement réduit de manière à maintenir une pression constante et atteindre en sortie de buse un jet parfait.The present invention relates to a spraying system comprising a nozzle holder on which is mounted a spray nozzle, a water supply circuit connected to said nozzle holder and a control unit for said nozzle capable of varying the flow rate of the nozzle in modulating an opening time during an opening/closing cycle of said nozzle, in which said nozzle holder comprises a chamber serving as a reservoir and capable of conveying water from the supply circuit to the nozzle, said chamber with a reduced overall volume so as to maintain a constant pressure and achieve a perfect jet at the nozzle outlet.
Description
La présente invention concerne le domaine de la pulvérisation.The present invention relates to the field of spraying.
L’objet de la présente invention concerne plus particulièrement un système de pulvérisation comprenant un porte buse sur lequel est montée une buse de pulvérisation à débit variable de type buse à pulsation, un circuit d’alimentation en eau relié audit porte buse et une unité de pilotage de type PWM (pour « Pulse Width Modulation » ou modulation de largeur d’impulsion) capable de faire varier le débit de la buse en modulant la durée d’ouverture lors d’un cycle d’ouverture/fermeture de ladite buse.The object of the present invention relates more particularly to a spraying system comprising a nozzle holder on which is mounted a variable-flow spray nozzle of the pulsating nozzle type, a water supply circuit connected to said nozzle holder and a PWM type control (for "Pulse Width Modulation" or pulse width modulation) capable of varying the flow rate of the nozzle by modulating the opening time during an opening/closing cycle of said nozzle.
La présente invention trouvera de façon non-exclusive des applications avantageuses dans le domaine agricole et/ou viticole notamment en équipant un engin agricole du type véhicule d’épandage comprenant une rampe de pulvérisation équipée d’une pluralité de buses de pulvérisation.The present invention will find, non-exclusively, advantageous applications in the agricultural and/or viticultural field, in particular by equipping an agricultural machine of the spreading vehicle type comprising a spray boom equipped with a plurality of spray nozzles.
Etat de l’artState of the art
On connaît dans le domaine agricole et viticole les pulvérisateurs.Sprayers are known in the agricultural and viticultural field.
Les pulvérisateurs sont classiquement destinés à pulvériser des produits sur les cultures sous forme de liquide.Sprayers are conventionally intended to spray products on crops in liquid form.
On parle également d’intrants.Also referred to as inputs.
De tels pulvérisateurs sont par exemple utilisés pour appliquer sur les cultures des engrais foliaires pour désherber ou encore pour traiter les cultures contre certaines maladies et/ou lutter contre certains insectes (insectes, acariens, etc.) qui sont susceptibles de nuire à la récolte.Such sprayers are for example used to apply foliar fertilizers to the crops for weeding or else to treat the crops against certain diseases and/or to fight against certain insects (insects, mites, etc.) which are liable to harm the harvest.
Un pulvérisateur comporte généralement un réservoir de stockage contenant le liquide à pulvériser ; ce réservoir est raccordé à un circuit équipé d’une pompe et d’une ou plusieurs buses de pulvérisation.A sprayer generally comprises a storage tank containing the liquid to be sprayed; this tank is connected to a circuit equipped with a pump and one or more spray nozzles.
De tels pulvérisateurs peuvent équiper un véhicule motorisé de type par exemple tracteur, automoteur ou encore aéronef (autonome ou non).Such sprayers can be fitted to a motorized vehicle of the type, for example tractor, self-propelled or even aircraft (autonomous or not).
On parle de véhicules d’épandage.We are talking about spreading vehicles.
Aujourd’hui, on connaît des pulvérisateurs qui intègrent un système électronique de pilotage comprenant un calculateur central apte à piloter de façon indépendante les différentes sorties de l’ensemble des buses.Today, sprayers are known which incorporate an electronic control system comprising a central computer able to independently control the various outputs of all the nozzles.
Dans le domaine de l’agriculture, certains véhicules d’épandage comprennent un système de pulvérisateur composé d’une rampe articulée à l’arrière (ou à l’avant) du véhicule.In agriculture, some spreading vehicles include a sprayer system consisting of a hinged boom at the rear (or front) of the vehicle.
Une telle rampe peut par exemple faire plusieurs dizaines de mètres de large et les buses de pulvérisation peuvent être fixées sur la rampe par exemple environ tous les cinquante centimètres, voire tous les vingt-cinq centimètres.Such a boom can for example be several tens of meters wide and the spray nozzles can be fixed on the boom for example approximately every fifty centimeters, or even every twenty-five centimeters.
Les dimensions et les espacements ci-dessus sont fournis ici à titre purement indicatifs et ne présentent en aucun cas un caractère limitatif ou restrictif.The dimensions and spacings above are provided here for information only and are in no way limiting or restrictive.
Ainsi, toujours selon cet exemple, un véhicule d’épandage qui est équipé d’une rampe de quarante-huit mètres de large avec une buse fixée tous les cinquante centimètres va comporter un calculateur central capable de piloter en temps réel et de façon indépendante quatre-vingt-seize buses fixées sur la rampe.Thus, still according to this example, a spreading vehicle which is equipped with a forty-eight meter wide boom with a nozzle fixed every fifty centimeters will include a central computer capable of controlling in real time and independently four - twenty-six nozzles fixed on the ramp.
Un tel pilotage des buses (temps réel et indépendant) permet de réaliser une pulvérisation localisée pour pulvériser le champ de façon parcellaire, c’est-à-dire sur des courtes sections de parcelle du champ ; on comprend donc que le pilotage de ces buses pour la pulvérisation localisée peut nécessiter un actionnement simultané de l’ensemble des buses comme un actionnement d’une seule buse. On parle aussi de pilotage buse à buse.Such piloting of the nozzles (real time and independent) makes it possible to carry out localized spraying to spray the field in a fragmented manner, that is to say over short sections of the field; it is therefore understood that the control of these nozzles for localized spraying may require simultaneous actuation of all the nozzles such as actuation of a single nozzle. This is also referred to as nozzle-to-nozzle piloting.
Sur le plan théorique, ce pilotage buse à buse présente de nombreux avantages : il permet de réduire les coûts de pulvérisation et la pollution associée en optimisant l’utilisation du liquide pulvérisé.On a theoretical level, this nozzle-to-nozzle control has many advantages: it reduces spraying costs and the associated pollution by optimizing the use of the sprayed liquid.
De tels systèmes de pulvérisation localisée permettent en outre d’améliorer la précision de la pulvérisation en pulvérisant correctement les sections du champ en fonction des besoins réels.Such localized spraying systems further improve spraying accuracy by correctly spraying sections of the field according to actual needs.
En revanche, le Demandeur a observé que, sur le plan pratique, pulvériser buse par buse reste difficile à mettre à mettre en œuvre.On the other hand, the Applicant has observed that, in practical terms, spraying nozzle by nozzle remains difficult to implement.
Avec les pulvérisateurs actuels, il est en effet très difficile d’assurer cette pulvérisation localisée de façon pleinement satisfaisante car la configuration du circuit d’eau du pulvérisateur ne permet pas d’avoir un débit de pulvérisation stable en sortie de buse.With current sprayers, it is indeed very difficult to ensure this localized spraying in a fully satisfactory manner because the configuration of the sprayer's water circuit does not allow a stable spray flow rate at the nozzle outlet.
On observe en effet des temps de transition lors du pilotage d’une seule buse.Indeed, transition times are observed when piloting a single nozzle.
Ces temps de transition sont causés par une ouverture de la buse qui entraîne une baisse de pression significative laquelle ne permet pas une pulvérisation optimisée.These transition times are caused by an opening of the nozzle which causes a significant drop in pressure which does not allow an optimized spraying.
En mode « pulvérisation localisée », le Demandeur a constaté qu’il était important de maintenir un débit suffisant en sortie de buses sans temps de transition de manière à ce que la pulvérisation soit optimale. Or, comme expliqué ci-dessus, on observe systématiquement une perte de pression dans les circuits actuels, laquelle implique un temps de transition pour atteindre le débit souhaité en sortie de buse.In “localized spraying” mode, the Applicant found that it was important to maintain a sufficient flow rate at the outlet of the nozzles without transition time so that the spraying was optimal. However, as explained above, a loss of pressure is systematically observed in the current circuits, which implies a transition time to reach the desired flow rate at the nozzle outlet.
Le Demandeur soumet en outre que les buses à débit variable telles que les buses à pulsation, également connues sous l’expression buses PWM sont des buses pilotées électriquement par une unité de pilotage selon une technologie PWM capable de faire varier le débit de chaque buse en modulant la durée d’ouverture lors d’un cycle d’ouverture/fermeture de ladite buse.The Applicant further submits that variable flow nozzles such as pulse nozzles, also known as PWM nozzles, are nozzles electrically driven by a control unit using PWM technology capable of varying the flow rate of each nozzle by modulating the duration of opening during an opening/closing cycle of said nozzle.
La technologie PWM repose sur le principe de faire varier le débit des buses en modulant la durée du cycle d’ouverture des buses.PWM technology is based on the principle of varying nozzle flow by modulating the duration of the nozzle opening cycle.
Généralement, les buses à débit variable présentent une fréquence d’ouverture/fermeture de 10 à 100 Hertz. En d’autres termes, on comprend ici que chaque buse est capable de s’ouvrir et se fermer 10 à 100 fois par seconde. La modulation du débit de la buse s’effectue donc ici en faisant varier la durée d’ouverture de la buse au sein d’un cycle d’ouverture/fermeture.Generally, variable rate nozzles have an open/close frequency of 10 to 100 Hertz. In other words, we understand here that each nozzle is capable of opening and closing 10 to 100 times per second. The modulation of the nozzle flow is therefore carried out here by varying the opening time of the nozzle within an opening/closing cycle.
Sur le plan théorique, l’utilisation de buses PWM est très avantageuse car elle permet d’obtenir une pulvérisation localisée.On the theoretical level, the use of PWM nozzles is very advantageous because it allows to obtain a localized spraying.
En revanche, sur le plan pratique, le Demandeur observe avec les technologies PWM d’aujourd’hui que la taille des gouttes en sortie de buses est irrégulière et que le jet d’eau formé par la buse en sortie de buse n’est pas régulier de sorte que la surface à traiter par pulvérisation n’est pas correctement traitée avec ce type de buses PWM.On the other hand, on a practical level, the Applicant observes with today's PWM technologies that the size of the drops at the nozzle outlet is irregular and that the water jet formed by the nozzle at the nozzle outlet is not regular so that the surface to be sprayed is not properly treated with this type of PWM nozzles.
Le Demandeur soumet que, pour ces raisons, les pulvérisateurs qui sont connus jusqu’à présent et qui utilisent des buses de type PWM pour pulvériser de façon localisée et indépendante une surface à traiter ne sont pas efficaces.The Applicant submits that, for these reasons, the sprayers which are known hitherto and which use PWM type nozzles to spray a surface to be treated in a localized and independent manner are not effective.
Résumé et objet de la présente inventionSummary and object of the present invention
La présente invention vise à améliorer la situation décrite ci-dessusThe present invention aims to improve the situation described above
La présente invention vise notamment à remédier à au moins l’un des différents problèmes techniques mentionnés ci-dessus.The present invention aims in particular to remedy at least one of the various technical problems mentioned above.
Selon un premier aspect, l’objet de la présente invention concerne un système de pulvérisation comprenant un porte buse sur lequel est montée une buse de pulvérisation (telle que notamment une buse à débit variable de type buse à pulsation), un circuit d’alimentation en eau relié audit porte buse et une unité de pilotage capable de faire varier le débit de la buse en modulant la durée d’ouverture lors d’un cycle d’ouverture/fermeture de ladite buse.According to a first aspect, the object of the present invention relates to a spraying system comprising a nozzle holder on which is mounted a spray nozzle (such as in particular a variable-flow nozzle of the pulsating nozzle type), a power supply circuit in water connected to said nozzle holder and a control unit capable of varying the flow rate of the nozzle by modulating the opening time during an opening/closing cycle of said nozzle.
Selon la présente invention, ledit porte buse est pourvu d’une chambre présentant un volume d’encombrement réduit de manière à limiter le temps de remplissage en eau de ladite chambre et limiter la perte de pression en sortie de buse et de maintenir une pression constante de manière à atteindre un jet parfait en sortie de buse.According to the present invention, said nozzle holder is provided with a chamber having a reduced bulk volume so as to limit the water filling time of said chamber and to limit the loss of pressure at the nozzle outlet and to maintain a constant pressure. so as to achieve a perfect jet at the nozzle outlet.
Le demandeur soumet que le volume de la chambre du porte buse est ici 200 fois inférieur au volume d’une buse PWM classique.The applicant submits that the volume of the nozzle holder chamber is here 200 times less than the volume of a conventional PWM nozzle.
De préférence, la chambre présente un volume sensiblement compris entre 0.020 et 0.050 cm3.Preferably, the chamber has a volume substantially between 0.020 and 0.050 cm3.
De préférence, la chambre présente un volume sensiblement compris entre 0.020 et 0.030 cm3.Preferably, the chamber has a volume substantially between 0.020 and 0.030 cm3.
De préférence, la chambre présente un volume sensiblement égal à 0.022 cm3.Preferably, the chamber has a volume substantially equal to 0.022 cm3.
Corrélativement, l’objet de la présente invention concerne selon un deuxième aspect un engin de pulvérisation, notamment engin agricole de type véhicule d’épandage, comprenant une rampe de pulvérisation équipée d’une pluralité de systèmes de pulvérisation tels que décrits ci-dessus.Correlatively, the object of the present invention relates, according to a second aspect, to a spraying machine, in particular agricultural machine of the spreading vehicle type, comprising a spraying boom equipped with a plurality of spraying systems as described above.
Brève description des figures annexéesBrief description of the appended figures
D’autres caractéristiques et avantages de la présente invention ressortiront de la description ci-dessous, en référence aux figures 1 à 15 annexées qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif et sur lesquelles :Other characteristics and advantages of the present invention will become apparent from the description below, with reference to the appended FIGS.
Claims (6)
dans lequel ledit porte buse comprend une chambre servant de réservoir et apte à acheminer l’eau du circuit d’alimentation jusqu’à la buse, ladite chambre présentant un volume d’encombrement réduit de manière à maintenir une pression constante et atteindre en sortie de buse un jet parfait.Spraying system comprising a nozzle holder on which a spray nozzle is mounted, a water supply circuit connected to said nozzle holder and a control unit for said nozzle capable of varying the flow rate of the nozzle by modulating a duration of opening during a cycle the opening/closing of said nozzle,
wherein said nozzle holder comprises a chamber serving as a reservoir and capable of conveying water from the supply circuit to the nozzle, said chamber having a reduced overall volume so as to maintain a constant pressure and reach at the outlet of nozzle a perfect jet.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2110937A FR3128139A3 (en) | 2021-10-14 | 2021-10-14 | SPRAYING SYSTEM COMPRISING A NOZZLE HOLDER WITH A REDUCED CHAMBER |
| FR2200177A FR3128136A1 (en) | 2021-10-14 | 2022-01-11 | Variable rate spray system |
| EP22200733.8A EP4166236A1 (en) | 2021-10-14 | 2022-10-11 | Variable flow spray system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2110937A FR3128139A3 (en) | 2021-10-14 | 2021-10-14 | SPRAYING SYSTEM COMPRISING A NOZZLE HOLDER WITH A REDUCED CHAMBER |
| FR2110937 | 2021-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR3128139A3 true FR3128139A3 (en) | 2023-04-21 |
Family
ID=81927799
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2110937A Pending FR3128139A3 (en) | 2021-10-14 | 2021-10-14 | SPRAYING SYSTEM COMPRISING A NOZZLE HOLDER WITH A REDUCED CHAMBER |
| FR2200177A Pending FR3128136A1 (en) | 2021-10-14 | 2022-01-11 | Variable rate spray system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2200177A Pending FR3128136A1 (en) | 2021-10-14 | 2022-01-11 | Variable rate spray system |
Country Status (1)
| Country | Link |
|---|---|
| FR (2) | FR3128139A3 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH421847A (en) * | 1964-07-09 | 1966-09-30 | Geigy Ag J R | Apparatus for the fractional distribution of a liquid or powder product |
| FR2703750B1 (en) * | 1993-04-06 | 1995-06-30 | Oilgear Towler | Hydraulic servo valve, circuit comprising it and its use in a method for controlling a forging press. |
| US5697342A (en) * | 1994-07-29 | 1997-12-16 | Caterpillar Inc. | Hydraulically-actuated fuel injector with direct control needle valve |
| FR3061862B1 (en) * | 2017-01-17 | 2019-04-19 | Tcsl | DEVICE FOR CLEANING WITH GAS OR MIXTURE GAS-LIQUID PULVERIZED |
-
2021
- 2021-10-14 FR FR2110937A patent/FR3128139A3/en active Pending
-
2022
- 2022-01-11 FR FR2200177A patent/FR3128136A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3128136A1 (en) | 2023-04-21 |
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