EP1935280B1 - Procédé de distribution d'un produit pulvérisé par un système de pulvérisation piézoélectrique et système de pulvérisation pour la mise en oeuvre d'un tel procédé - Google Patents

Procédé de distribution d'un produit pulvérisé par un système de pulvérisation piézoélectrique et système de pulvérisation pour la mise en oeuvre d'un tel procédé Download PDF

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Publication number
EP1935280B1
EP1935280B1 EP07123781A EP07123781A EP1935280B1 EP 1935280 B1 EP1935280 B1 EP 1935280B1 EP 07123781 A EP07123781 A EP 07123781A EP 07123781 A EP07123781 A EP 07123781A EP 1935280 B1 EP1935280 B1 EP 1935280B1
Authority
EP
European Patent Office
Prior art keywords
chamber
fluid
product
piezoelectric
pump
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.)
Not-in-force
Application number
EP07123781A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1935280A1 (fr
Inventor
Nicolas Duru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP1935280A1 publication Critical patent/EP1935280A1/fr
Application granted granted Critical
Publication of EP1935280B1 publication Critical patent/EP1935280B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • 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
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • B05B17/0646—Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0676—Feeding means
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/20—Additional enhancing means
    • A45D2200/207—Vibration, e.g. ultrasound
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0661—Transducer materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0866—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being a gear, centrifugal or screw-type pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0872—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being a peristaltic pump

Definitions

  • the present invention relates to a piezoelectric spraying system and a method of dispensing at least one pulverized product using such a system.
  • Piezoelectric spraying devices are widely used for spraying low viscosity liquids, for example room fragrances.
  • a wick allows to supply, by capillarity, a membrane vibrated by a ceramic.
  • the patent application European EP 0 656 230 discloses a dispensing method according to the preamble of claim 1 and an aerosol comprising a piezoelectric system and a membrane provided with an orifice. The liquid particles are sprayed with a jet of gas disposed at the outlet of the orifice. A method of cleaning the orifice in the event of capping is provided.
  • the patent application European EP 1 533 041 discloses a spraying device comprising a water reservoir comprising an electrolyte, a pump and an electrolysis bath provided with an anode and a cathode for producing acidic water on the side of the anode and the alkaline water on the side of the cathode, the first being sprayed with the piezoelectric device and the second being directed to a second reservoir of lost liquids.
  • a control circuit including a microprocessor for controlling the electrolysis, the pump and the piezoelectric device is also included.
  • the invention aims in particular to provide a system and a spraying method for spraying products having various rheologies and formulations, polarizable or not.
  • the present invention thus relates, in one of its aspects, to a method of dispensing a product, in which a product supply chamber of a piezoelectric spraying device receives, during a spraying cycle, of product flowing in a direction from at least one tank, the flow direction of the product being reversed at the end of the spraying cycle to evacuate the product contained in the feed chamber.
  • the feed chamber is delimited at least partially by a vibrating membrane of the piezoelectric device.
  • piezoelectric device may make it possible to spray with a relatively large spray if necessary.
  • the circulation of the product can be effected for example by a pump driven in one direction to supply the chamber and in the opposite direction to empty the chamber.
  • This pump may comprise for example two rotary members, for example ovoid or other shape, may or may not include a toothing.
  • the two rotating members can rotate in contact with each other.
  • means may be provided to prevent slippage of one member relative to the other, for example a friction or a suitable mechanical connection.
  • the pump can be configured to close, when stopped, any communication between the chamber and the tank, which can help improve the conservation of the product, especially when it comprises one or more volatile solvents.
  • the operation of the piezoelectric spraying device can be interrupted only after the direction of circulation of the product has been reversed.
  • the operation of the piezoelectric device is for example maintained for a duration greater than or equal to 0.5 seconds from the reversal of the direction of flow of the product. This duration can be for example between 0.5 and 2 seconds. This can further improve the emptying of the chamber by spraying a residual amount of product.
  • the piezoelectric device can be operated before the product is circulated at the beginning of a spraying cycle. This can improve the particle size distribution of the sprayed product by allowing the device piezoelectric to reach a relatively stable operating regime before the actual spraying.
  • Feeding at least one product from the chamber may be through a channel at a lower end of the chamber when the spraying system is in a normal position of use.
  • An inclination of the chamber is detected in an exemplary implementation of the method. This may indicate to the user that the spraying system is not in an orientation suitable for complete emptying of the chamber. An audible and / or visual signal can then be emitted if the chamber is inclined unfavorable to the emptying thereof.
  • the duration of circulation of the product to the chamber can be counted.
  • An audible and / or visual signal may be emitted depending on the duration of circulation of the product, to inform the user on the degree of emptying of the tank.
  • the chamber can receive sprays from at least two tanks, for example two products having different hues.
  • the product or products may be taken from the reservoir (s) without air intake.
  • the chamber may have a volume of less than or equal to 1 ml, for example a volume of between 0.25 and 0.75 ml.
  • the product flow to the chamber during spraying is, for example, between 0.1 g / min and 5 g / min, for example from 0.7 to 0.9 g / min.
  • the sprayed product may be any cosmetic or care product, for example a makeup composition, especially a foundation or a self-tanning composition.
  • the circulation system may comprise a pump integral with the reservoir, and the pump and reservoir assembly may belong for example to a refill.
  • the spraying system may comprise a switch, for example a push button, to trigger a spraying cycle.
  • the spraying system may comprise an electric motor for driving a first coupling member, the aforementioned pump comprising a second coupling member arranged to cooperate with the first coupling member, so that a rotation of the first coupling member Coupling caused by the motor is accompanied by a rotation of the second coupling member and the actuation of the pump.
  • the piezoelectric spraying device may be normally separable from the tank or alternatively may be permanently attached to the tank.
  • the spraying system 1 shown in FIG. figure 1 comprises a housing 2 housing a piezoelectric spraying device 3 for spraying a product through an opening 4 of the housing 2.
  • the opening 4 is for example a front opening, of axis oriented perpendicular to the longitudinal axis X of the housing 2, as illustrated in FIG. figure 1 , but other configurations of the housing 2 are possible without departing from the scope of the present invention.
  • the opening 4 is formed on a removable cover 5, which can be separated from the base of the housing by acting on unlocking tabs 6 which are for example diametrically opposed.
  • the spraying system 1 comprises, as illustrated schematically in FIG. figure 7 , an electrical source 11 which is for example accessible under the hood 5 and / or after removal of a hatch, not shown, so as to be replaced.
  • the electric source 11 can be integrated into the refill 10.
  • the spraying system 1 also comprises a control circuit 12 which makes it possible to control the operation of an electric motor 13 and that of the piezoelectric device 3 during a spraying cycle, as will be detailed below.
  • the spraying system 1 comprises, in the illustrated example, a push-button 15 located in the upper part of the housing 2. This push-button 15 can pass through a corresponding opening formed on the cover 5.
  • the spraying system 1 may also comprise at least one audible and / or luminous warning device 17, for example a light-emitting diode, and possibly at least one inclinometer 19 represented diagrammatically in FIG. figure 7 whose role will be explained later.
  • the refill 10 comprises, as shown figure 2 , a reservoir 20, which is for example in the form of a flexible bag containing at least one product to be dispensed.
  • the product can be taken from the tank 20 without air intake, if necessary.
  • the refill 10 further comprises the piezoelectric device 3, which is contained in a housing 22 integral with the reservoir 20.
  • the piezoelectric device 3 may comprise a not shown ring, made of a piezoelectric material, and a perforated membrane, still sometimes called a grid, mechanically vibrated by the ring.
  • the latter may have a circular or non-circular shape, comprising for example a ceramic, in particular zirconate (PZT), metaniobate (PN), barium titanate or zinc oxide.
  • PZT zirconate
  • PN metaniobate
  • FR 2,886,174 discloses an example of a piezoelectric device.
  • the perforated membrane has for example a diameter greater than or equal to 6 mm, for example equal to 7 mm.
  • the membrane comprises, for example, more than 100 holes, for example 150 holes.
  • the holes have for example a diameter of between 20 microns and 40 microns, for example equal to 30 microns.
  • the holes are for example located in the central region of the membrane.
  • the membrane is for example glued on a ceramic having a thickness of between 0.5 and 0.7 mm, for example equal to 0.6 mm, for example with an outer diameter of 20 mm, and an internal diameter equal to 5 mm. .
  • the ceramic is for example excited by a sinusoidal voltage 100 kHz 100 peak to peak.
  • the control circuit 12 can supply the excitation current of the piezoelectric material ring and comprise the electronic components making it possible to keep the excitation frequency at the resonance value.
  • the reservoir 20 can be connected to the housing 22 detachably, if necessary, for example to allow its replacement while maintaining the piezoelectric device 3.
  • the reservoir 20, in particular when it is permanently fixed on the housing 2, may optionally be made to allow it to be reloaded with product and may include an opening for this purpose.
  • the housing 22 houses, in the example considered, in addition to the piezoelectric device 3, a pump 26 which allows the circulation of the product from the reservoir 20 to a feed chamber 27 of the piezoelectric device 3.
  • the chamber 27 is delimited by one side by the vibrating membrane of the piezoelectric device.
  • the pump 26 comprises for example two rotary members 28 and 29 which rotate in contact with one another, which makes it possible to close the communication between the chamber 27 and the reservoir 20 when the pump is at a standstill.
  • the pump 26 can be rotated by means of a first coupling member 30 accessible on one face of the casing 22, arranged to cooperate with a second coupling member 31 which is only shown schematically in FIG. figure 7 driven by the motor 13.
  • a first coupling member 30 accessible on one face of the casing 22, arranged to cooperate with a second coupling member 31 which is only shown schematically in FIG. figure 7 driven by the motor 13.
  • the rotation of the motor can be transmitted, via the first and second coupling members 30 and 31, to the rotary members 28 and 29.
  • the spraying system may comprise, where appropriate, a gearbox between the motor 13 and the second coupling member 31.
  • the housing 22 also comprises, in the example considered, electrical conductors 32 intended for the electrical supply of the piezoelectric device 3, the housing 2 housing corresponding electrical contacts connected to the control circuit 12.
  • the first and second coupling members 30 and 31 cooperate and the conductors 32 can be supplied by the control circuit 12.
  • the operation of the spraying system 1 during the spraying cycle can be as follows, as illustrated in FIG. figure 11 .
  • pressing the push-button 15 is detected by the control circuit 12 in step 40.
  • the circuit 12 can then control the operation of the piezoelectric device 3 in step 41, then that of the motor 13 so as to cause in step 42 the circulation of the product to the chamber 27.
  • the spraying can take place, for example, as long as the user holds down the pushbutton 15.
  • step 43 When the release thereof is detected in step 43, the operation of the piezoelectric device 3 can be maintained while the direction of rotation of the motor 13 is reversed, so that the pump 26 empties the chamber 27. After a predefined duration, the piezoelectric device 3 can be stopped in step 45.
  • the chamber 27 may be powered by a channel 48 located in the lower part thereof.
  • This channel 48 preferably has a small section.
  • the control circuit 12 may be arranged to signal to the user by means of the inclinometer 19, for example by emitting a light and / or sound signal, that the spraying system 1 is not in the most suitable orientation. the complete emptying of the chamber 27, in this case head up in the example of the figure 6 .
  • the control circuit 12 can also, if necessary, record the operating time of the motor 13 when it drives the pump 26 so as to supply the product to the chamber 27. This operating time thus counted can be compared to a preset value and the control circuit 12 may be arranged to warn the user of the imminent emptying of the tank 20 by emitting for example a sound and / or light signal.
  • the alarm 17 is for example an LED which changes color or which flashes when the reservoir 20 is empty or practically empty. This LED can also light to indicate that the device is working properly.
  • the invention is not limited to a particular drive means for circulating the product to the chamber 27 from the tank 20 or vice versa, and one can use various types of pumps, for example using a peristaltic pump, to gears or screw.
  • the reservoir 20 may be further defined at least partially by a piston 65, as illustrated in FIG. figure 8 and the motor 13 can drive a pusher 50 which moves the piston 20 in one direction or another, depending on whether it is desired to supply the chamber 27 or empty it.
  • the invention is not limited to the spraying of a single product and the housing 2 may for example receive at least two refills which are for example each associated with a spraying device 3, the housing 2 may comprise in this case two openings 4a and 4b for respectively spraying each of the products, as illustrated in FIG. figure 9 .
  • the spraying system 1 may then comprise a selector 52 which allows the user to choose one or the other of the products, or even to allow the simultaneous spraying of the two products with a user-determined ratio, the control can for example in this case control the respective drive motors of the corresponding pumps with different speeds of rotation depending on the relative proportion of the products to be sprayed.
  • Products can also be sprayed together through a single opening, as shown in figure 10 .
  • the spraying system may comprise two tanks respectively containing the two products to be sprayed and corresponding pumps for feeding a single chamber associated with the spraying device.
  • the piezoelectric device can be made in various ways and comprise for example any form of vibrating membrane.
  • the invention is not limited either to a feed chamber of the piezoelectric device of particular shape.
  • the shape of the feed chamber of the piezoelectric device may in particular depend on the shape of the vibrating membrane.
  • the refill also includes the drive motor of the pump.
  • additional electrical contacts can be made on the recharge to allow the supply of the current corresponding to the engine.
  • the spraying system comprises a refill which is limited to the single tank.
  • the spray system may still not have a removable refill.
  • the tank may for example be permanently present in the housing of the spray system and can be reloaded or not in product.
  • the pump for supplying the product to the feed chamber of the piezoelectric device may, where appropriate, serve to fill the tank, a selector being for example provided to allow the pump to suck in a source of product for filling the reservoir and not in the feed chamber of the piezoelectric device.
  • the recharging may comprise means for informing the housing on the nature of the product contained therein, for example reliefs cooperating with contactors of the housing and whose state is analyzed by the control circuit.
  • the refill can also comprise an electronic memory or a barcode containing information representative of the product contained inside, and possibly also additional characteristics, such as, for example, information relating to the spraying conditions of the product, for example the flow rate. supply of the piezoelectric device.
  • the piezoelectric device may for example have a shape as disclosed in the application WO 9116997 .

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Special Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Coating By Spraying Or Casting (AREA)
EP07123781A 2006-12-20 2007-12-20 Procédé de distribution d'un produit pulvérisé par un système de pulvérisation piézoélectrique et système de pulvérisation pour la mise en oeuvre d'un tel procédé Not-in-force EP1935280B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0655745A FR2910253B1 (fr) 2006-12-20 2006-12-20 Procede de distribution d'un produit pulverise par un systeme de pulverisation piezoelectrique et systeme de pulverisation pour la mise en oeuvre d'un tel procede

Publications (2)

Publication Number Publication Date
EP1935280A1 EP1935280A1 (fr) 2008-06-25
EP1935280B1 true EP1935280B1 (fr) 2009-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07123781A Not-in-force EP1935280B1 (fr) 2006-12-20 2007-12-20 Procédé de distribution d'un produit pulvérisé par un système de pulvérisation piézoélectrique et système de pulvérisation pour la mise en oeuvre d'un tel procédé

Country Status (7)

Country Link
US (1) US20080290185A1 (ja)
EP (1) EP1935280B1 (ja)
JP (1) JP2008246468A (ja)
AT (1) ATE446031T1 (ja)
DE (1) DE602007002870D1 (ja)
ES (1) ES2334276T3 (ja)
FR (1) FR2910253B1 (ja)

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US10625031B2 (en) 2016-12-27 2020-04-21 L'oreal Orientation independent topical applicator
KR102494382B1 (ko) * 2017-04-21 2023-02-02 요트. 바그너 게엠베하 액체용 정전기 분무기를 제어하기 위한 방법
TWI615202B (zh) * 2017-04-26 2018-02-21 定量電灑噴霧裝置
GB2578127B (en) * 2018-10-17 2022-11-23 Vectair Systems Ltd Fluid dispenser
TWI827708B (zh) * 2019-10-18 2024-01-01 英商衛泰爾系統公司 流體分配器

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Also Published As

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JP2008246468A (ja) 2008-10-16
EP1935280A1 (fr) 2008-06-25
ATE446031T1 (de) 2009-11-15
FR2910253B1 (fr) 2010-03-12
DE602007002870D1 (de) 2009-12-03
ES2334276T3 (es) 2010-03-08
FR2910253A1 (fr) 2008-06-27
US20080290185A1 (en) 2008-11-27

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