WO2005084820A1 - Liquid product dispensing device - Google Patents

Liquid product dispensing device Download PDF

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Publication number
WO2005084820A1
WO2005084820A1 PCT/FR2005/050093 FR2005050093W WO2005084820A1 WO 2005084820 A1 WO2005084820 A1 WO 2005084820A1 FR 2005050093 W FR2005050093 W FR 2005050093W WO 2005084820 A1 WO2005084820 A1 WO 2005084820A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
piston
member according
dispensing
contact
Prior art date
Application number
PCT/FR2005/050093
Other languages
French (fr)
Inventor
Firmin Garcia
Hervé Pennaneac'h
Original Assignee
Valois Sas
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 Valois Sas filed Critical Valois Sas
Priority to CN2005800057117A priority Critical patent/CN1921952B/en
Priority to BRPI0507319-7A priority patent/BRPI0507319B1/en
Priority to EP05717711.5A priority patent/EP1722896B1/en
Priority to ES05717711.5T priority patent/ES2532120T3/en
Priority to JP2006553629A priority patent/JP2007522933A/en
Publication of WO2005084820A1 publication Critical patent/WO2005084820A1/en

Links

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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1094—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1021—Piston pumps having an outlet valve which is a gate valve
    • B05B11/1022—Piston pumps having an outlet valve which is a gate valve actuated by pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/107—Gate valves; Sliding valves

Definitions

  • the present invention relates to a fluid product dispensing member generally intended to be associated with a fluid product reservoir to constitute together a fluid product dispenser. It is a dispensing member, the actuation of which is generally carried out manually using a finger of the user.
  • the fluid product is distributed in the form of a jet of fine spray droplets, a continuous stream or even a dab of fluid product, particularly in the case of viscous products, such as cosmetic creams.
  • a fluid dispenser member can in particular be used in the fields of perfumery, cosmetics or even pharmacy to distribute more or less viscous products.
  • the present invention relates more particularly, but not exclusively, to a type of dispensing member which is commonly designated by the term "push-pump".
  • the dispensing member comprises a pusher not only forming a dispensing orifice but further defining a part of a fluid chamber in which the fluid is selectively pressurized.
  • a pump it is a pump chamber.
  • a special feature of this push-button pump is that an internal surface of the push-button, of generally substantially cylindrical shape, serves as a sealed sliding barrel for a piston which moves in sealed contact in this barrel, thereby selectively unmasking the orifice of distribution.
  • This piston is generally a piston of the differential type which moves in response to a change in pressure of the fluid inside the chamber. This differential piston is to be distinguished from the main piston, the displacement of which is generated by the actuation of the pusher.
  • a differential piston and a main piston displaceable in sealed contact in respective drums.
  • the main barrel for the main piston can also be formed by the pusher. This is notably the case in the pump described in document WO 97/23304.
  • the pusher comprises a bearing wall on which pressure is exerted using a finger to actuate the pusher.
  • the pusher comprises a skirt which extends downwards from the support wall. This skirt forms a first sealed sliding barrel for a differential piston and a second main ft for the main piston of the pump.
  • the differential piston is dissociated from the main piston.
  • the differential piston is biased away from the support wall by a spring which serves both as a return spring and as a precompression spring.
  • the sliding barrel of the differential piston is formed with an outlet duct which leads to an attached nozzle in a housing formed in the skirt of the pusher.
  • This nozzle forms a dispensing orifice at the level of which the fluid product leaves the dispensing member.
  • the housing formed by the skirt is produced with a swirl system which cooperates with the nozzle to drive the fluid product in a swirl movement before exiting through the dispensing orifice.
  • This swirl system is conventionally constituted by one or more tangential swirl channels opening into a swirl chamber precisely centered on the dispensing orifice.
  • the swirl system is in the form of a recess network inside the housing of the skirt. This recess network is then completed by the attached nozzle which isolates the swirl channels as well as the chamber.
  • the sliding barrel of the differential piston is in the form of a cylindrical surface only interrupted at the outlet channel.
  • the main piston rises in the main barrel of the pusher, which has the effect of displacing the differential piston by sealed sliding inside the differential barrel.
  • the active sealing lip of the differential piston which is in direct contact with the fluid, slides in the lower part of the barrel located under the outlet channel.
  • the pump of document WO 97/23304 consists of five essential constituent elements, namely a body intended to be associated with a reservoir of fluid product, the pusher, a ball forming an inlet valve, the differential piston and the nozzle.
  • the body forms the main piston.
  • the purpose of this is to simplify a dispensing member of the type described in the aforementioned document of the prior art so as to reduce the number of component parts.
  • a particular aim is to dispense with an attached sprinkler.
  • Another object is to conserve the swirl system which contributes to the quality of the distribution of the fluid product.
  • Another object of the invention is to improve the cooperation between the differential piston and the pusher, in particular the sealed sliding contact and the creation of the outlet passage for the fluid product.
  • the present invention provides a fluid dispenser member comprising a dispensing wall defining an external surface and an internal surface, said wall being crossed by a dispensing orifice connecting the internal surface to the external surface.
  • the internal surface forming a sealed sliding barrel for a piston capable of moving in sealed contact in said barrel to selectively unmask the dispensing orifice
  • said piston forming a wall element of a chamber of fluid product in which product fluid is selectively pressurized, characterized in that the internal surface extends over two surface sections, namely an upper section and a lower section, the upper section having an internal diameter smaller than that of the lower section, the orifice dispenser being formed at the upper section, the piston comprising a l sealing lip in leaktight sliding contact with the lower section.
  • This type of distribution member can be a pump of the push-pump type, but it can also be other types of distribution members.
  • the pusher is separated from the distribution wall.
  • the distribution wall is fixed relative to the reservoir, or even movable relative to the pusher.
  • the sliding barrel, the dispensing orifice and the swirl system are formed integrally by the dispensing wall.
  • the internal surface, at the level of the upper section forms a swirling system of fluid product immediately upstream of the dispensing orifice.
  • the fact of sliding the lip on a section offset from the section where the dispensing orifice is formed is particularly advantageous as regards the molding of the dispensing wall.
  • the distribution wall is very generally made from molded injected plastic.
  • this spindle must form the swirl system. Since the swirl system expands to form a hollowed-out part in the sliding barrel, the spindle must form a corresponding imprint which projects outwards. Thus, during the withdrawal of the spindle during demolding, the protruding impression must be forcibly removed the protruding impression must therefore leave the hollowed-out part only to form it and move over an axial extent of the barrel. sliding given that the plastic is flowable, the forceful passage of the projecting imprint marks very little the sliding was.
  • the present invention is not limited to the case where the distribution wall forms a swirl system.
  • the piston comprises a second lip in sealed sliding contact with the upper section.
  • the piston is out of contact with the upper section. In this case, there is no upper lip.
  • the piston comprises a tight stop edge in tight stop contact against a stop surface, the piston being resiliently biased against this tight stop surface in the rest position, the sealed contact between the abutment edge and the abutment surface hermetically isolating the chamber from the dispensing orifice.
  • the abutment surface is frustoconical and biases the abutment edge radially outward.
  • the distribution wall is formed by a pusher further comprising a support wall which extends on its outer periphery by the distribution wall, the abutment surface being formed by the support wall.
  • the surface sections are cylindrical and connected by a transition section, which is advantageously frustoconical.
  • the distribution wall is formed by a substantially cylindrical skirt further comprising a guide wall defining an internal surface which advantageously extends substantially in the extension of the lower section, the guide wall comprising internal hooking means in abutment with external holding means.
  • the guide wall of the pusher surrounds the part of the body forming the holding means.
  • the sealing lip in contact with the lower section is resiliently biased towards the upper section in the rest position. The stop edge can be implemented without the lower lip sliding on a lower section of larger diameter.
  • FIGS. 1 and 2 are vertical cross-sectional views through a distributor equipped with a distribution member according to an embodiment of the invention in the rest state
  • - Figure 2 is a partial view enlarged in Figure 1
  • - Figure 3 is an even more enlarged view of a detail of the dispensing member of the invention.
  • the dispensing member 600 in FIGS. 1 and 2, is shown associated with a container 650 comprising a body 651 internally defining a reservoir of fluid product 5.
  • the body 651 is provided at its upper end with an opening in the form a collar 653, which is used for fixing the dispensing member of the invention.
  • the dispensing member 600 comprises three constituent elements, namely a body 610, a pusher 620 and a piston member 630.
  • the dispensing member further comprises spring means 640, here in the form of a spring with black pudding.
  • the body, the pusher and the piston member are preferably made by molding plastic material.
  • the dispensing member has the design of a pump comprising a pump chamber 1.
  • the body 610 comprises a fixing ring 611 which cooperates with the neck
  • the ring 611 is engaged with the outside of the neck 653.
  • the body 611 also forms a guide and holding bush 614.
  • the upper end of the guide bush 614 is formed with an outer shoulder 6141, which serves as external holding means.
  • the body also forms a main barrel 617 which internally defines a sealed sliding surface, the function of which will be given below.
  • the body also forms a dip tube 615 which extends inside the container 650.
  • the dip tube 615 is extended at its upper end by an inlet sleeve 616 which forms a profile or seat of an inlet valve.
  • the dip tube 615 and the sleeve 616 are traversed by an inlet conduit 618.
  • the inlet sleeve 616 extends concentrically inside the main barrel 617, so that an annular space is formed between them.
  • the body 610 has an axial symmetry of revolution about an axis X which extends longitudinally to the axial center of the inlet duct 618. This is a particular design for a particular body of an organ distribution according to a non-limiting embodiment of the invention. Of course, the body can have other characteristics than those which have just been described, without however departing from the scope of the invention.
  • the pusher 620 forms a dispensing head of the dispensing member.
  • the pusher 620 comprises a support wall 621 and a peripheral skirt 622 which extends downwards from the external periphery of the support wall.
  • the pusher 620 has a general shape of an inverted bucket, the support wall of which forms the bottom and the skirt the cylindrical side wall.
  • the skirt is not necessarily cylindrical in shape. It can have tapered or rounded sections.
  • the support wall 621 includes an external support surface 6211 which can be pressed using one or more finger (s).
  • the support wall 621 comprises an internal surface 6212 which advantageously forms one or more stop studs 6213.
  • the skirt 622 comprises an upper distribution wall 623 and a lower guide wall 624.
  • the wall distribution wall 623 is connected at its upper end to the external periphery of the support wall 621.
  • the distribution wall 623 comprises an external surface and an internal surface. This internal surface is preferably circular cylindrical and defines a sliding barrel as will be seen below.
  • the internal surface defines two cylindrical internal surface sections 6232 and 6242 connected by a transition section 6243, which can be stepped or tapered.
  • the two sections include an upper section 6232 and a lower section 6242.
  • the upper section has an internal diameter smaller than that of the lower section.
  • the upper section is connected to the support wall, and more particularly to the internal surface 6212 of the support wall.
  • a peripheral annular groove 6214 is formed which comprises an abutment surface 6213, advantageously re-positioned in a frustoconical manner.
  • the upper section is formed with a through dispensing orifice 625 which extends from the inner surface to the outer surface.
  • the dispensing orifice 625 can open out at the external surface in a diffusion cup 6251.
  • the upper section 6232 of the dispensing wall 623 is formed with a swirl system 626 which allows entraining fluid in rotation in the form of a swirl whose eye is centered on the dispensing orifice.
  • the distribution wall 623 which is advantageously repositioned in a single piece with the support wall 621 and the guide wall, 624, is crossed by.
  • a dispensing orifice and comprises an internal surface formed with a swirl system, at the level of the upper section.
  • the guide wall 624 extends in the extension of the distribution wall 621, and more precisely of the lower section 6242.
  • the boundary between the guide wall and the distribution wall is not clearly defined, so that the lower section can be considered as part of the distribution wall and / or the guide wall.
  • the guide wall comprises a stop bead 6241 on its internal surface intended to cooperate with the shoulder 6141 of the guide bush 614.
  • the guide wall 624 surrounds the guide bush 614 concentrically.
  • the stop bead 6241 makes it possible to secure the pusher to the body, which can thus only move axially over a maximum stroke determined by the distance separating the lower end of the guide wall from the fixing ring 611.
  • the piston member 630 comprises, in this embodiment, a main piston 636 engaged in sealed sliding in the main barrel 617 and a differential piston formed by two lips 632 and 633 in sealed sliding contact in the barrel formed by the surface internal of the distribution wall 623.
  • the two lips 632 and 633 are formed on the outer periphery of the plate
  • the piston member 630 is advantageously made in one piece.
  • the lips 632 and 633 extend one above the other with a spacing greater than the axial extent of the swirl system 626.
  • the upper lip 632 is in contact of the upper section 6232 above the swirl system 626, while the lower lip 633 comes into contact with the lower section 6242 below the swirl system 626.
  • the swirl system cannot communicate with the inside the pusher except at the level of the space formed between the two lips 632 and 633.
  • the piston member advantageously also comprises an abutment edge 6321 located near the lip 632.
  • This has ridge extends concentrically inside the lip 632, since the lip is formed by an outer edge and the ridge by an inner edge of an annular flange.
  • the stop edge 6321 is intended to come into tight stop contact against the tight stop surface 6321 formed by the support wall.
  • the edge is biased by the spring 640 towards the surface, and the tight contact is established in the rest position, shown in FIGS. 1 to 3.
  • the truncation of the surface 6213 tends to push the edge 6321 radially towards the exterior, which has the effect of pressing the lip 632 further against the upper surface section 6232. A better seal is thus obtained in the rest position.
  • the piston member 630 also forms an axial central rod 637 which extends from the plate 631 away from the bearing wall 621. This axial rod 637 is partially engaged inside the inlet sleeve 616 formed by the body 610.
  • the rod 637 forms a valve profile 638 intended to cooperate with the corresponding profile formed by the sleeve 616.
  • the rod 637 in cooperation with the sleeve forms an inlet valve for a chamber pump 1, as will be seen below.
  • the piston member 630 forms a piston crown 635 at the lower end of which the main piston 636 is formed.
  • the piston crown 635 extends concentrically around the axial rod 637, so as to define between them an annular duct which extends through the plate 631 through fluid passage holes 634.
  • the body 610, the pusher 620 and the piston member 630 together form a pump chamber 1 which extends continuously between the main barrel 617 and the sleeve 616, between the piston crown 635 and the axial rod 637, in the through holes 634, and between the plate 631 and the internal surface of the support wall 621.
  • the upper surface of the plate 631 and the internal surface form wall elements of the pump chamber 1.
  • the spring 640 pushes the piston member 630 into abutment against the support wall 621.
  • the valve inlet formed in cooperation between the axial rod 637 and the sleeve 616 is open.
  • the two lips of the differential piston are in contact with the barrel formed by the internal surface of the distribution wall 623.
  • the abutment edge is in sealed contact with the abutment surface 6321.
  • the pump chamber is thus perfectly isolated from the dispensing orifice in the rest position.
  • the movement of the pusher has the effect of closing the inlet valve: the axial rod 637 engages more deeply in the sleeve 616 until a sliding tight contact is created between the sleeve or the rod.
  • the pump chamber 1 is isolated from the reservoir 5. From this moment, the product in the pump chamber 1 will be pressurized. Because the fluid product is incompressible, the total useful volume of the pump chamber remains necessarily constant. But as the main piston 636 sinks into the barrel 617 thereby reducing the volume of the lower part of the chamber, a new volume must be created. This is possible because the differential eye moves away from the support wall
  • the upper lip 632 is directly in contact with the fluid, while the lower lip is not directly in contact with the fluid.
  • the upper lip slides in the upper part of the barrel defined by the upper section above the swirl system.
  • this part of the barrel has a better surface quality than the lower part of the upper section which extends just below the swirl system, which can be damaged by the withdrawal of the molding pin.
  • the lower lip 633 slides against the lower surface section, which cannot have been damaged by the removal of the molding spindle which served to form the swirl system, since its internal diameter is greater to that of the spindle.
  • An advantageous characteristic of the invention resides in the fact that the piston member 640 is biased against the bearing wall 621 and moves under the effect of the pressure increase inside the pump chamber in distance from this support wall. This is in particular made possible thanks to the fluid passage holes 634 which pass through the plate 631 forming the differential piston. It can also be said that the support wall defines a wall element of the pump chamber. Such displacement of the differential piston away from the support wall 5, in association with a swirl system formed in the distribution wall, is advantageous in terms of demoulding since the upper lip 632 slides in leaktight manner on the upper part of the sliding barrel which will not be damaged by the removal of the molding spindle forming the negative imprint which was used to mold the swirl system.
  • the rest position is reached when the stop bead 6241 formed by the guide wall 624 is in abutment under the outer shoulder 6141. It is quite possible to remove the upper lip 632 of the differential piston , so that the latter is then only provided with a lower lip 633 and an abutment edge. Indeed, the edge guarantees a static seal at rest, which is sufficient. As for the lower lip, it guarantees dynamic sealing during actuation. Thus, the front wall 6323 of the differential piston which faces the dispensing orifice and the swirl system can remain detached from the dispensing wall, except at the level of the lower lip 633. As soon as the stop edge is takes off from the abutment surface, the passage between the chamber and the dispensing orifice is established.
  • a lip of the differential piston slides in a cylinder which cannot be damaged by the withdrawal of the molding spindle, and particularly in the case where the distribution wall forms a swirl system.
  • the difference in diameter between the upper section and the lower section achieves this result.
  • the sliding of the plunger around the bushing of the body makes it possible to re-position a dispenser whose diameter of the plunger is identical to or greater than that of the body and of the reservoir.
  • the pusher can extend in the extension of the reservoir, which gives a more tubular appearance to the dispenser. This characteristic can be implemented independently of the characteristics linked to the differential piston.

Abstract

The inventive liquid product dispensing device comprises a dispensing wall (623) which defines an external and an internal surface and is provided with a through dispensing orifice (625) connecting said external and internal surfaces. The internal surface forms a sliding sealed cylinder for a piston (632, 633) which is sealingly displaceable in said cylinder for selectively unlocking the dispensing orifice and forms a wall element of a liquid product chamber in which said liquid product is selectively pressurised. The invention is characterised in that the internal surface extends on two surface sections i.e. a top section (6232) and a lower section (6242), the internal diameter of the top section is smaller than that of the lower section and the piston comprises a sealing lip (633) sealingly slidingly in contact with the lower section.

Description

Organe de distribution de produit fluide Fluid product distribution member
La présente invention concerne un organe de distribution de produit fluide généralement destiné à être associé à un réservoir de produit fluide pour constituer ensemble un distributeur de produit fluide. Il s'agit d'un organe de distribution dont l'actionnement est généralement réalisé manuellement à l'aide d'un doigt de l'utilisateur. Le produit fluide est distribué sous la forme d'un jet de fines gouttelettes pulvérisées, d'un filet continu ou encore d'une noisette de produit fluide, particulièrement dans le cas de produit visqueux, comme des crèmes cosmétiques. Un tel organe de distribution de produit fluide peut notamment être utilisé dans les domaines de la parfumerie, de la cosmétique ou encore de la pharmacie pour distribuer des produits plus ou moins visqueux. La présente invention s'intéresse plus particulièrement, mais pas exclusivement, à un type d'organe de distribution qui est communément désigné sous le terme de « pompe-poussoir ». Une telle désignation s'explique par le fait que l'organe de distribution comprend un poussoir formant non seulement un orifice de distribution mais définissant en outre une partie d'une chambre de produit fluide dans laquelle du produit fluide est sélectivement mis sous pression. Dans le cas d'une pompe, il s'agit d'une chambre de pompe. Une particularité de cette pompe-poussoir réside dans le fait qu'une surface interne du poussoir, de forme générale sensiblement cylindrique, sert de fût de coulissement étanche pour un piston qui se déplace en contact étanche dans ce fût pour ainsi démasquer sélectivement l'orifice de distribution. Ce piston est en général un piston du type différentiel qui se déplace en réponse à une variation de pression du produit fluide à l'intérieur de la chambre. Ce piston différentiel est à différencier du piston principal dont le déplacement est généré par l'actionnement du poussoir. Ainsi, dans une telle pompe-poussoir, il y a un piston différentiel et un piston principal, déplaçables en contact étanche dans des fûts respectifs. Le fût principal pour le piston principal peut également être formé par le poussoir. Ceci est notamment le cas dans la pompe décrite dans le document WO 97/23304. Le poussoir comprend une paroi d'appui sur laquelle on exerce une pression à l'aide d'un doigt pour actionner le poussoir. En outre, le poussoir comprend une jupe qui s'étend vers le bas à partir de la paroi d'appui. Cette jupe forme un premier fût de coulissement étanche pour un piston différentiel et un second f t principal pour le piston principal de la pompe. Le piston différentiel est dissocié du piston principal. Le piston différentiel est sollicité en éloignement de la paroi d'appui par un ressort qui sert à la fois de ressort de rappel et de ressort de précompression. Le fût de coulissement du piston différentiel est formé avec un conduit de sortie qui mène à un gicleur rapporté dans un logement formé dans la jupe du poussoir. Ce gicleur forme un orifice de distribution au niveau duquel le produit fluide sort de l'organe de distribution. En outre, le logement formé par la jupe est réalisé avec un système de tourbillonnement qui coopère avec le gicleur pour entraîner le produit fluide dans un mouvement de tourbillonnement avant de sortir à travers l'orifice de distribution. Ce système de tourbillonnement est constitué de manière conventionnelle par un ou plusieurs canaux de tourbillonnement tangentiels débouchant dans une chambre de tourbillonnement centrée de manière précise sur l'orifice de distribution. Le système de tourbillonnement se présente sous la forme d'un réseau d'évidement à l'intérieur du logement de la jupe. Ce réseau d'évidement est ensuite complété par le gicleur rapporté qui vient isoler les canaux de tourbillonnement ainsi que la chambre. Ainsi, le fût de coulissement du piston différentiel se présente sous la forme d'une surface cylindrique uniquement interrompue au niveau du canal de sortie. Lorsque l'on appuie sur le poussoir, le piston principal remonte dans le fût principal du poussoir ce qui a pour effet de déplacer le piston différentiel par coulissement étanche à l'intérieur du fût différentiel. Ceci a pour effet de comprimer le ressort : le piston différentiel se déplace alors vers le haut en direction de la paroi d'appui du poussoir. La lèvre d'étanchéité active du piston différentiel, qui est directement en contact avec le produit fluide, coulisse dans la partie inférieure du fût située sous le canal de sortie. Dès que le piston différentiel arrive au niveau du conduit de sortie, le produit fluide mis sous pression dans la chambre est refoulé hors de la chambre à travers ce conduit et parvient jusqu'au gicleur où il est mis en tourbillonnement et éjecté à travers l'orifice de distribution. La pompe du document WO 97/23304 est constituée de cinq éléments constitutifs essentiels, à savoir un corps destiné à être associé à un réservoir de produit fluide, le poussoir, une bille formant clapet d'entrée, le piston différentiel et le gicleur. Le corps forme le piston principal. Le but de la présente est de simplifier un organe de distribution du type décrit dans le document de l'art antérieur précité de manière à ciiminuer le nombre de pièces constitutives. Un but particuher est de se passer d'un gicleur rapporté. Un autre but est de conserver le système de tourbillonnement qui contribue à la qualité de la distribution du produit fluide. Un autre but de l'invention est d'améliorer la coopération entre le piston différentiel et le poussoir, notamment le contact coulissant étanche et la création du passage de sortie pour le produit fluide. Pour atteindre certains de ces buts, la présente invention propose un Organe de distribution de produit fluide comprenant un paroi de distribution définissant une surface externe et une surface interne, ladite paroi étant -traversée par un orifice de distribution reliant la surface interne à la surface externe, la surface interne formant un fût de coulissement étanche pour un piston apte à se déplacer en contact étanche dans ledit fût pour démasquer sélectivement l'orifice de distribution, ledit piston formant un élément de paroi d'une chambre de produit fluide dans laquelle du produit fluide est sélectivement mis sous pression, caractérisé en ce que la surface interne s'étend sur deux sections de surface, à savoir une section supérieure et une section inférieure, la section supérieure présentant un diamètre interne inférieur à celui de section inférieure, l'orifice de distribution étant formé au niveau de la section supérieure, le piston comprenant une lèvre d'étanchéité en contact de coulissement étanche avec la section inférieure. Ce type d'organe de distribution peut être une pompe du type pompe- poussoir, mais il peut également s'agir d'autres types d'organes de distribution dans lesquels le poussoir est dissocié de la paroi de distribution. On peut notamment imaginer que la paroi de distribution est fixe par rapport au réservoir, ou encore mobile par rapport au poussoir. Avantageusement, le fût de coulissement, l'orifice de distribution et le système de tourbillonnement sont formés de manière monobloc par la paroi de distribution. Avantageusement, la surface interne, au niveau de la section supérieure, forme un système de tourbillonnement de produit fluide immédiatement en amont de l'orifice de distribution. Le fait de faire coulisser la lèvre sur une section décalée par rapport à la section où est formé l'orifice de distribution est particulièrement avantageux en ce qui concerne le moulage de la paroi de distribution. En effet, la paroi de distribution est très généralement réalisée à partir de matière plastique injectée moulée. Pour cela, on utilise un moule constitué de plusieurs éléments. Un de ces éléments forme notamment une broche destinée à former la surface interne de la paroi de distribution. Dans le cas de la présente invention, cette broche doit former le système de tourbillonnement. Etant donné que le système de tourbillonnement s'étend en formant une partie évidée dans le fût de coulissement, la broche doit former une empreinte correspondante qui fait saillie vers l'extérieur. Ainsi, lors du retrait de la broche au cours du démoulage, l'empreinte en saillie doit être retirée en force l'empreinte en saillie doit donc sortir de la partie évidée qu'à la former et se déplacer sur une étendue axiale du fût de coulissement étant donné que la matière plastique est fluable, le passage en force de l'empreinte en saillie ne marque que très peu le fut de coulissement. Aussi, en prévoyant une paroi de guidage avec une surface interne ayant un diamètre supérieur à celui du fut de coulissement, l'empreinte saillante de la broche peut être retirée à ce niveau sans mordre dans la surface interne de la paroi de guidage. De ce fait, l'empreinte saillante de la broche n'est retirée en force que sur une petite étendue axiale du fût de coulissement : on limite ainsi les risques de détérioration du fût de coulissement lors du démoulage de la broche. Toutefois, la présente invention n'est pas limitée au cas où la paroi de distribution forme un système de tourbillonnement. Selon une autre forme de réalisation, le piston comprend une seconde lèvre en contact de coulissement étanche avec la section supérieure. En variante, le piston est hors de contact de la section supérieure. Dans ce cas, il n'y a pas de lèvre supérieure. Selon une autre caractéristique qui peut être mise en œuvre indépendamment des caractéristiques fiées à la lèvre du piston, le piston comprend une arête de butée étanche en contact de butée étanche contre une surface de butée, le piston étant sollicité élastiquement contre cette surface de butée étanche en position de repos, le contact étanche entre l'arête de butée et la surface de butée isolant hermétiquement la chambre de l'orifice de distribution. Avantageusement, la surface de butée est tronconique et sollicite l'arête de butée radialement vers l'extérieur. Avantageusement, la paroi de distribution est formée par un poussoir comprenant en outre une paroi d'appui qui se prolonge sur sa périphérie externe par la paroi de distribution, la surface de butée étant formée par la paroi d'appui. Selon un autre aspect, les sections de surface sont cylindriques et reliées par une section de transition, qui est avantageusement tronconique. Selon une autre caractéristique qui peut être également mise en oeuvre indépendamment, la paroi de distribution est formée par une jupe sensiblement cylindrique comprenant en outre une paroi de guidage définissant une surface interne qui s'étend avantageusement sensiblement dans le prolongement de la section inférieure, la paroi de guidage comprenant des moyens d'accrochage internes en butée avec des moyens de maintien externes. Ainsi, la paroi de guidage du poussoir entoure la partie du corps formant les moyens de maintien. Selon un autre aspect, la lèvre d'étanchéité en contact avec la section inférieure est sollicitée élastiquement en direction de la section supérieure en position de repos. L'arête de butée peut être mise en œuvre sans la lèvre inférieure en coulissement sur une section inférieure de plus grand diamètre. Un aspect intéressant de l'invention réside dans le fait qu'une même paroi traversée par un orifice de distribution forme intérieurement un système de tourbillonnement de produit fluide. L'invention sera maintenant plus amplement décrite en référence aux dessins donnant à titre d'exemple non limitatif un mode de réalisation de l'invention. Sur les figures : - la figure 1 est une vue en coupe transversale verticale à travers un distributeur équipé d'un organe de distribution selon un mode de réalisation de l'invention à l'état de repos, - la figure 2 est une vue partielle agrandie de la figure 1, et - la figure 3 est une vue encore plus agrandie d'un détail de l'organe de distribution de l'invention. L'organe de distribution 600, sur les figures 1 et 2, est représenté associé à un récipient 650 comprenant un corps 651 définissant intérieurement un réservoir de produit fluide 5. Le corps 651 est pourvu à son extrémité supérieure d'une ouverture sous la forme d'un col 653, qui sert à la fixation de l'organe de distribution de l'invention. L'organe de distribution 600 comprend trois éléments constitutifs, à savoir un corps 610, un poussoir 620 et un organe de piston 630. L'organe de distribution comprend en outre des moyens de ressort 640, ici sous la forme d'un ressort à boudin. Le corps, le poussoir et l'organe de piston sont de préférence réalisés par moulage de matière plastique. L'organe de distribution a la conception d'une pompe comprenant une chambre de pompe 1. Le corps 610 comprend une bague de fixation 611 qui coopère avec le colThe present invention relates to a fluid product dispensing member generally intended to be associated with a fluid product reservoir to constitute together a fluid product dispenser. It is a dispensing member, the actuation of which is generally carried out manually using a finger of the user. The fluid product is distributed in the form of a jet of fine spray droplets, a continuous stream or even a dab of fluid product, particularly in the case of viscous products, such as cosmetic creams. Such a fluid dispenser member can in particular be used in the fields of perfumery, cosmetics or even pharmacy to distribute more or less viscous products. The present invention relates more particularly, but not exclusively, to a type of dispensing member which is commonly designated by the term "push-pump". This designation is explained by the fact that the dispensing member comprises a pusher not only forming a dispensing orifice but further defining a part of a fluid chamber in which the fluid is selectively pressurized. In the case of a pump, it is a pump chamber. A special feature of this push-button pump is that an internal surface of the push-button, of generally substantially cylindrical shape, serves as a sealed sliding barrel for a piston which moves in sealed contact in this barrel, thereby selectively unmasking the orifice of distribution. This piston is generally a piston of the differential type which moves in response to a change in pressure of the fluid inside the chamber. This differential piston is to be distinguished from the main piston, the displacement of which is generated by the actuation of the pusher. Thus, in such a push-up pump, there is a differential piston and a main piston, displaceable in sealed contact in respective drums. The main barrel for the main piston can also be formed by the pusher. This is notably the case in the pump described in document WO 97/23304. The pusher comprises a bearing wall on which pressure is exerted using a finger to actuate the pusher. In addition, the pusher comprises a skirt which extends downwards from the support wall. This skirt forms a first sealed sliding barrel for a differential piston and a second main ft for the main piston of the pump. The differential piston is dissociated from the main piston. The differential piston is biased away from the support wall by a spring which serves both as a return spring and as a precompression spring. The sliding barrel of the differential piston is formed with an outlet duct which leads to an attached nozzle in a housing formed in the skirt of the pusher. This nozzle forms a dispensing orifice at the level of which the fluid product leaves the dispensing member. In addition, the housing formed by the skirt is produced with a swirl system which cooperates with the nozzle to drive the fluid product in a swirl movement before exiting through the dispensing orifice. This swirl system is conventionally constituted by one or more tangential swirl channels opening into a swirl chamber precisely centered on the dispensing orifice. The swirl system is in the form of a recess network inside the housing of the skirt. This recess network is then completed by the attached nozzle which isolates the swirl channels as well as the chamber. Thus, the sliding barrel of the differential piston is in the form of a cylindrical surface only interrupted at the outlet channel. When the pusher is pressed, the main piston rises in the main barrel of the pusher, which has the effect of displacing the differential piston by sealed sliding inside the differential barrel. This has the effect of compressing the spring: the differential piston then moves upwards towards the support wall of the pusher. The active sealing lip of the differential piston, which is in direct contact with the fluid, slides in the lower part of the barrel located under the outlet channel. As soon as the differential piston reaches the level of the outlet duct, the fluid product pressurized in the chamber is forced out of the chamber through this conduit and reaches the nozzle where it is swirled and ejected through the dispensing orifice. The pump of document WO 97/23304 consists of five essential constituent elements, namely a body intended to be associated with a reservoir of fluid product, the pusher, a ball forming an inlet valve, the differential piston and the nozzle. The body forms the main piston. The purpose of this is to simplify a dispensing member of the type described in the aforementioned document of the prior art so as to reduce the number of component parts. A particular aim is to dispense with an attached sprinkler. Another object is to conserve the swirl system which contributes to the quality of the distribution of the fluid product. Another object of the invention is to improve the cooperation between the differential piston and the pusher, in particular the sealed sliding contact and the creation of the outlet passage for the fluid product. To achieve some of these goals, the present invention provides a fluid dispenser member comprising a dispensing wall defining an external surface and an internal surface, said wall being crossed by a dispensing orifice connecting the internal surface to the external surface. , the internal surface forming a sealed sliding barrel for a piston capable of moving in sealed contact in said barrel to selectively unmask the dispensing orifice, said piston forming a wall element of a chamber of fluid product in which product fluid is selectively pressurized, characterized in that the internal surface extends over two surface sections, namely an upper section and a lower section, the upper section having an internal diameter smaller than that of the lower section, the orifice dispenser being formed at the upper section, the piston comprising a l sealing lip in leaktight sliding contact with the lower section. This type of distribution member can be a pump of the push-pump type, but it can also be other types of distribution members. in which the pusher is separated from the distribution wall. One can in particular imagine that the distribution wall is fixed relative to the reservoir, or even movable relative to the pusher. Advantageously, the sliding barrel, the dispensing orifice and the swirl system are formed integrally by the dispensing wall. Advantageously, the internal surface, at the level of the upper section, forms a swirling system of fluid product immediately upstream of the dispensing orifice. The fact of sliding the lip on a section offset from the section where the dispensing orifice is formed is particularly advantageous as regards the molding of the dispensing wall. In fact, the distribution wall is very generally made from molded injected plastic. For this, we use a mold made up of several elements. One of these elements in particular forms a pin intended to form the internal surface of the distribution wall. In the case of the present invention, this spindle must form the swirl system. Since the swirl system expands to form a hollowed-out part in the sliding barrel, the spindle must form a corresponding imprint which projects outwards. Thus, during the withdrawal of the spindle during demolding, the protruding impression must be forcibly removed the protruding impression must therefore leave the hollowed-out part only to form it and move over an axial extent of the barrel. sliding given that the plastic is flowable, the forceful passage of the projecting imprint marks very little the sliding was. Also, by providing a guide wall with an internal surface having a diameter greater than that of the sliding barrel, the projecting imprint of the pin can be removed at this level without biting into the internal surface of the guide wall. As a result, the protruding impression of the spindle is removed in force only over a small axial extent of the sliding barrel: this limits the risk of deterioration of the sliding barrel during demolding of the spindle. However, the present invention is not limited to the case where the distribution wall forms a swirl system. According to another embodiment, the piston comprises a second lip in sealed sliding contact with the upper section. Alternatively, the piston is out of contact with the upper section. In this case, there is no upper lip. According to another characteristic which can be implemented independently of the characteristics relating to the lip of the piston, the piston comprises a tight stop edge in tight stop contact against a stop surface, the piston being resiliently biased against this tight stop surface in the rest position, the sealed contact between the abutment edge and the abutment surface hermetically isolating the chamber from the dispensing orifice. Advantageously, the abutment surface is frustoconical and biases the abutment edge radially outward. Advantageously, the distribution wall is formed by a pusher further comprising a support wall which extends on its outer periphery by the distribution wall, the abutment surface being formed by the support wall. According to another aspect, the surface sections are cylindrical and connected by a transition section, which is advantageously frustoconical. According to another characteristic which can also be implemented independently, the distribution wall is formed by a substantially cylindrical skirt further comprising a guide wall defining an internal surface which advantageously extends substantially in the extension of the lower section, the guide wall comprising internal hooking means in abutment with external holding means. Thus, the guide wall of the pusher surrounds the part of the body forming the holding means. According to another aspect, the sealing lip in contact with the lower section is resiliently biased towards the upper section in the rest position. The stop edge can be implemented without the lower lip sliding on a lower section of larger diameter. An interesting aspect of the invention resides in the fact that the same wall traversed by a dispensing orifice internally forms a swirl system of fluid product. The invention will now be described more fully with reference to the drawings giving by way of nonlimiting example an embodiment of the invention. In the figures: - Figure 1 is a vertical cross-sectional view through a distributor equipped with a distribution member according to an embodiment of the invention in the rest state, - Figure 2 is a partial view enlarged in Figure 1, and - Figure 3 is an even more enlarged view of a detail of the dispensing member of the invention. The dispensing member 600, in FIGS. 1 and 2, is shown associated with a container 650 comprising a body 651 internally defining a reservoir of fluid product 5. The body 651 is provided at its upper end with an opening in the form a collar 653, which is used for fixing the dispensing member of the invention. The dispensing member 600 comprises three constituent elements, namely a body 610, a pusher 620 and a piston member 630. The dispensing member further comprises spring means 640, here in the form of a spring with black pudding. The body, the pusher and the piston member are preferably made by molding plastic material. The dispensing member has the design of a pump comprising a pump chamber 1. The body 610 comprises a fixing ring 611 which cooperates with the neck
653 pour la fixation de l'organe sur le récipient 650. La bague 611 est en prise avec l'extérieur du col 653. Le corps 611 forme également une douille de guidage et de maintien 614. L'extrémité supérieure de la douille de guidage 614 est formée avec un épaulement extérieur 6141, qui sert de moyens de maintien externes. Le corps forme également un fût principal 617 qui définit intérieurement une surface de coulissement étanche, dont la fonction sera donnée ci-après. Le corps forme également un tube plongeur 615 qui s'étend à l'intérieur du récipient 650. Le tube plongeur 615 se prolonge à son extrémité supérieure par un manchon d'entrée 616 qui forme un profil ou siège de clapet d'entrée. Le tube plongeur 615 ainsi que le manchon 616 sont traversés par un conduit d'entrée 618. Le manchon d'entrée 616 s'étend de manière concentrique à l'intérieur du fût principal 617, de sorte qu'un espace annulaire est formé entre eux. Le corps 610 présente une symétrie axiale de révolution autour d'un axe X qui s'étend de manière longitudinale au centre axial du conduit d'entrée 618. H s'agit là d'une conception particulière pour un corps particulier d'un organe de distribution selon une forme de réalisation non limitative de l'invention. Bien entendu, le corps peut présenter d'autres caractéristiques que celles qui viennent d'être décrites, sans pour autant sortir du cadre de l'invention. Le poussoir 620 forme une tête de distribution de l'organe de distribution. Le poussoir 620 comprend une paroi d'appui 621 et une jupe périphérique 622 qui s'étend vers le bas à partir de la périphérie externe de la paroi d'appui. Ainsi, le poussoir 620 présente une forme générale de godet renversé dont la paroi d'appui forme le fond et la jupe la paroi latérale cylindrique. Toutefois, la jupe n'est pas forcément de forme cylindrique. Elle peut présenter des sections tronconiques ou arrondies. La paroi d'appui 621 comprend une surface externe d'appui 6211 sur laquelle on peut appuyer à l'aide d'un ou de plusieurs doigt(s). D'autre part, la paroi d'appui 621 comprend une surface interne 6212 qui forme avantageusement un ou plusieurs plot(s) de butée 6213. La jupe 622 comprend une paroi supérieure de distribution 623 et une paroi inférieure de guidage 624. La paroi de distribution 623 est raccordée à son extrémité supérieure à la périphérie externe de la paroi d'appui 621. La paroi de distribution 623 comprend une surface externe et une surface interne. Cette surface interne est de préférence cylindrique circulaire et définit un fût de coulissement comme on le verra ci-après. La surface interne définit deux sections de surface interne cylindriques 6232 et 6242 reliées par une section de transition 6243, qui peut être en gradin ou tronconique. Les deux sections comprennent une section supérieure 6232 et une section inférieure 6242. La section supérieure présente un diamètre interne inférieur à celui de la section inférieure. La section supérieure se raccorde à la paroi d'appui, et plus particulièrement à la surface interne 6212 de la paroi d'appui. A la jonction entre la section supérieure 6232 et la surface interne 6212, est formée une gorge annulaire périphérique 6214 qui comprend une surface de butée 6213, réahsée avantageusement de manière tronconique. La section supérieure est formée avec un orifice de distribution traversant 625 qui s'étend de la surface interne jusqu'à la surface externe. L'orifice de distribution 625 peut déboucher au niveau de la surface externe dans une coupelle de diffusion 6251. Selon une caractéristique intéressante de l'invention, la section supérieure 6232 de la paroi de distribution 623 est formée avec un système de tourbillonnement 626 qui permet d'entraîner du produit fluide en rotation sous la forme d'un tourbillonnement dont l'œil est centré sur l'orifice de distribution. Ainsi, la paroi de distribution 623, qui est avantageusement réahsée de manière monobloc avec la paroi d'appui 621 et la paroi de guidage, 624, est traversée par. un orifice de distribution et comprend une surface interne formée avec un système de tourbillonnement, au niveau de la section supérieure. La paroi de guidage 624 s'étend dans le prolongement de la paroi de distribution 621, et plus précisément de la section inférieure 6242. La limite entre la paroi de guidage et la paroi de distribution n'est pas clairement défini, de sorte que la section inférieure peut être considérée comme faisant partie de la paroi de distribution et/ou de la paroi de guidage. La paroi de guidage comprend un cordon de butée 6241 sur sa surface interne destiné à coopérer avec l'épaulement 6141 de la douille de guidage 614. La paroi de guidage 624 entoure la douille de guidage 614 de manière concentrique. Le cordon de butée 6241 permet de solidariser le poussoir au corps, qui ne peut ainsi que se déplacer axialement sur une course maximale déterminée par la distance séparant l'extrémité inférieure de la paroi de guidage de la bague de fixation 611. L'organe de piston 630 comprend, dans ce mode de réalisation, un piston principal 636 engagé à coulissement étanche dans le fût principal 617 et un piston différentiel formé par deux lèvres 632 et 633 en contact de coulissement étanche dans le fût formé par la surface interne de la paroi de distribution 623. Les deux lèvres 632 et 633 sont formées sur la périphérie extérieure du plateau653 for fixing the member to the container 650. The ring 611 is engaged with the outside of the neck 653. The body 611 also forms a guide and holding bush 614. The upper end of the guide bush 614 is formed with an outer shoulder 6141, which serves as external holding means. The body also forms a main barrel 617 which internally defines a sealed sliding surface, the function of which will be given below. The body also forms a dip tube 615 which extends inside the container 650. The dip tube 615 is extended at its upper end by an inlet sleeve 616 which forms a profile or seat of an inlet valve. The dip tube 615 and the sleeve 616 are traversed by an inlet conduit 618. The inlet sleeve 616 extends concentrically inside the main barrel 617, so that an annular space is formed between them. The body 610 has an axial symmetry of revolution about an axis X which extends longitudinally to the axial center of the inlet duct 618. This is a particular design for a particular body of an organ distribution according to a non-limiting embodiment of the invention. Of course, the body can have other characteristics than those which have just been described, without however departing from the scope of the invention. The pusher 620 forms a dispensing head of the dispensing member. The pusher 620 comprises a support wall 621 and a peripheral skirt 622 which extends downwards from the external periphery of the support wall. Thus, the pusher 620 has a general shape of an inverted bucket, the support wall of which forms the bottom and the skirt the cylindrical side wall. However, the skirt is not necessarily cylindrical in shape. It can have tapered or rounded sections. The support wall 621 includes an external support surface 6211 which can be pressed using one or more finger (s). On the other hand, the support wall 621 comprises an internal surface 6212 which advantageously forms one or more stop studs 6213. The skirt 622 comprises an upper distribution wall 623 and a lower guide wall 624. The wall distribution wall 623 is connected at its upper end to the external periphery of the support wall 621. The distribution wall 623 comprises an external surface and an internal surface. This internal surface is preferably circular cylindrical and defines a sliding barrel as will be seen below. The internal surface defines two cylindrical internal surface sections 6232 and 6242 connected by a transition section 6243, which can be stepped or tapered. The two sections include an upper section 6232 and a lower section 6242. The upper section has an internal diameter smaller than that of the lower section. The upper section is connected to the support wall, and more particularly to the internal surface 6212 of the support wall. At the junction between the upper section 6232 and the internal surface 6212, a peripheral annular groove 6214 is formed which comprises an abutment surface 6213, advantageously re-positioned in a frustoconical manner. The upper section is formed with a through dispensing orifice 625 which extends from the inner surface to the outer surface. The dispensing orifice 625 can open out at the external surface in a diffusion cup 6251. According to an advantageous characteristic of the invention, the upper section 6232 of the dispensing wall 623 is formed with a swirl system 626 which allows entraining fluid in rotation in the form of a swirl whose eye is centered on the dispensing orifice. Thus, the distribution wall 623, which is advantageously repositioned in a single piece with the support wall 621 and the guide wall, 624, is crossed by. a dispensing orifice and comprises an internal surface formed with a swirl system, at the level of the upper section. The guide wall 624 extends in the extension of the distribution wall 621, and more precisely of the lower section 6242. The boundary between the guide wall and the distribution wall is not clearly defined, so that the lower section can be considered as part of the distribution wall and / or the guide wall. The guide wall comprises a stop bead 6241 on its internal surface intended to cooperate with the shoulder 6141 of the guide bush 614. The guide wall 624 surrounds the guide bush 614 concentrically. The stop bead 6241 makes it possible to secure the pusher to the body, which can thus only move axially over a maximum stroke determined by the distance separating the lower end of the guide wall from the fixing ring 611. The piston member 630 comprises, in this embodiment, a main piston 636 engaged in sealed sliding in the main barrel 617 and a differential piston formed by two lips 632 and 633 in sealed sliding contact in the barrel formed by the surface internal of the distribution wall 623. The two lips 632 and 633 are formed on the outer periphery of the plate
631. L'organe de piston 630 est avantageusement réalisé de manière monobloc. Les lèvres 632 et 633 s'étendent l'une au-dessus de l'autre avec un écartement supérieur à l'étendue axiale du système de tourbillonnement 626. Dans la position de repos représentée sur la figure 1, la lèvre supérieure 632 est en contact de la section supérieure 6232 au-dessus du système de tourbillonnement 626, alors que la lèvre inférieure 633 vient en contact de la section inférieure 6242 en dessous du système de tourbillonnement 626. Ainsi, le système de tourbillonnement ne peut pas communiquer avec l'intérieur du poussoir hormis au niveau de l'espace formé entre les deux lèvres 632 et 633. Il s'agit de la position de repos dans laquelle l'organe de piston 630 est sollicité contre la paroi d'appui 621 par le ressort 640. On peut considérer que le piston différentiel est formé par le plateau 631 formant les deux lèvres 632 et 633. L'organe de piston comprend avantageusement également une arête de butée 6321 située à proximité de la lèvre 632. Cette arête s'étend de manière concentrique à l'intérieur de la lèvre 632, puisque la lèvre est formée par un bord externe et l'arête par un bord interne d'une bride annulaire. L'arête de butée 6321 est destinée à venir en contact de butée étanche contre la surface de butée étanche 6321 formée par la paroi d'appui. L'arête est sollicitée par le ressort 640 vers la surface, et le contact étanche est établi en position de repos, représenté sur les figures 1 à 3. La tronconicité de la surface 6213 a tendance à pousser l'arête 6321 radialement vers l'extérieur, ce qui a pour effet de presser la lèvre 632 en davantage contre la section de surface supérieure 6232. Une meilleure étanchéité est ainsi obtenue en position de repos. L'organe de piston 630 forme également une tige centrale axiale 637 qui s'étend à partir du plateau 631 en éloignement de la paroi d'appui 621. Cette tige axiale 637 est partiellement engagée à l'intérieur du manchon d'entrée 616 formé par le corps 610. La tige 637 forme un profil de clapet 638 destiné à coopérer avec le profil correspondant formé par le manchon 616. En d'autres termes, la tige 637 en coopération avec le manchon forme un clapet d'entrée pour une chambre de pompe 1, comme on le verra ci-après. D'autre part, l'organe de piston 630 forme une couronne de piston 635 à l'extrémité inférieure de laquelle est formé le piston principal 636. La couronne de piston 635 s'étend de manière concentrique autour de la tige axiale 637, de manière à définir entre elles un conduit annulaire qui s'étend à travers le plateau 631 à travers des trous de passage de produit fluide 634. Le corps 610, le poussoir 620 et l'organe de piston 630 forment ensemble une chambre de pompe 1 qui s'étend de manière continue entre le fût principal 617 et le manchon 616, entre la couronne de piston 635 et la tige axiale 637, dans les trous de passage 634, et entre le plateau 631 et la surface interne de la paroi d'appui 621. Ainsi, la surface supérieure du plateau 631 et la surface interne forment des éléments de paroi de la chambre de pompe 1. Dans la position de repos représentée sur la figure 1, le ressort 640 pousse l'organe de piston 630 en butée contre la paroi d'appui 621. Le clapet d'entrée formé en coopération entre la tige axiale 637 et le manchon 616 est ouvert. Les deux lèvres du piston , différentiel sont en contact du fût formé par la surface interne de la paroi de distribution 623. De plus, l'arête de butée est en contact étanche de la surface de butée6321. La chambre de pompe est ainsi parfaitement isolée de l'orifice de distribution en position de repos. En exerçant une force sur la surface externe d'appui 6211 de la paroi d'appui, le poussoir se déplace axialement par rapport au corps. Etant donné que l'organe de piston est en butée contre la paroi d'appui, l'organe de piston est poussé par le poussoir. Dans un premier temps, le déplacement du poussoir a pour effet de fermer le clapet d'entrée : la tige axiale 637 s'engage plus profondément dans le manchon 616 jusqu'à ce qu'un contact étanche coulissant soit créé entre le manchon ou la tige. Ainsi, la chambre de pompe 1 est isolée du réservoir 5. A partir de ce moment, le produit dans la chambre de pompe 1 va être mis sous pression. Du fait que le produit fluide est incompressible, le volume utile total de la chambre de pompe reste obligatoirement constant. Mais comme le piston principal 636 s'enfonce dans le fût 617 diminuant ainsi le volume de la partie basse de la chambre, un nouveau volume doit être crée. Ceci est possible du fait que le piton différentiel se déplace en éloignement de la paroi d'appui631. The piston member 630 is advantageously made in one piece. The lips 632 and 633 extend one above the other with a spacing greater than the axial extent of the swirl system 626. In the rest position shown in FIG. 1, the upper lip 632 is in contact of the upper section 6232 above the swirl system 626, while the lower lip 633 comes into contact with the lower section 6242 below the swirl system 626. Thus, the swirl system cannot communicate with the inside the pusher except at the level of the space formed between the two lips 632 and 633. This is the rest position in which the piston member 630 is urged against the bearing wall 621 by the spring 640. It can be considered that the differential piston is formed by the plate 631 forming the two lips 632 and 633. The piston member advantageously also comprises an abutment edge 6321 located near the lip 632. This has ridge extends concentrically inside the lip 632, since the lip is formed by an outer edge and the ridge by an inner edge of an annular flange. The stop edge 6321 is intended to come into tight stop contact against the tight stop surface 6321 formed by the support wall. The edge is biased by the spring 640 towards the surface, and the tight contact is established in the rest position, shown in FIGS. 1 to 3. The truncation of the surface 6213 tends to push the edge 6321 radially towards the exterior, which has the effect of pressing the lip 632 further against the upper surface section 6232. A better seal is thus obtained in the rest position. The piston member 630 also forms an axial central rod 637 which extends from the plate 631 away from the bearing wall 621. This axial rod 637 is partially engaged inside the inlet sleeve 616 formed by the body 610. The rod 637 forms a valve profile 638 intended to cooperate with the corresponding profile formed by the sleeve 616. In other words, the rod 637 in cooperation with the sleeve forms an inlet valve for a chamber pump 1, as will be seen below. On the other hand, the piston member 630 forms a piston crown 635 at the lower end of which the main piston 636 is formed. The piston crown 635 extends concentrically around the axial rod 637, so as to define between them an annular duct which extends through the plate 631 through fluid passage holes 634. The body 610, the pusher 620 and the piston member 630 together form a pump chamber 1 which extends continuously between the main barrel 617 and the sleeve 616, between the piston crown 635 and the axial rod 637, in the through holes 634, and between the plate 631 and the internal surface of the support wall 621. Thus, the upper surface of the plate 631 and the internal surface form wall elements of the pump chamber 1. In the rest position shown in FIG. 1, the spring 640 pushes the piston member 630 into abutment against the support wall 621. The valve inlet formed in cooperation between the axial rod 637 and the sleeve 616 is open. The two lips of the differential piston are in contact with the barrel formed by the internal surface of the distribution wall 623. In addition, the abutment edge is in sealed contact with the abutment surface 6321. The pump chamber is thus perfectly isolated from the dispensing orifice in the rest position. By exerting a force on the external support surface 6211 of the support wall, the pusher moves axially relative to the body. Since the piston member abuts against the support wall, the piston member is pushed by the pusher. Initially, the movement of the pusher has the effect of closing the inlet valve: the axial rod 637 engages more deeply in the sleeve 616 until a sliding tight contact is created between the sleeve or the rod. Thus, the pump chamber 1 is isolated from the reservoir 5. From this moment, the product in the pump chamber 1 will be pressurized. Because the fluid product is incompressible, the total useful volume of the pump chamber remains necessarily constant. But as the main piston 636 sinks into the barrel 617 thereby reducing the volume of the lower part of the chamber, a new volume must be created. This is possible because the differential eye moves away from the support wall
621. Ceci a pour effet de faire coulisser les lèvres 632 et 633 à l'intérieur de la paroi de distribution 623 et de défaire le contact étanche au niveau de l'arête de butée 6321. Les lèvres se déplacent ainsi jusqu'à ce que la lèvre supérieure 632 arrive au niveau du système de tourbillonnement 626. A ce moment, le produit fluide sous pression dans la chambre de pompe trouve un passage de sortie à travers le système de tourbillonnement et l'orifice de distribution. Le passage reste ainsi ouvert tant que la pression à l'intérieur de la chambre peut surmonter la force du ressort. Dès que la pression diminue en dessous d'un certain seuil à l'intérieur de la chambre, le ressort repousse le piston différentiel vers la position de repos représentée sur les figures. Le système de tourbillonnement et l'orifice de distribution sont alors à nouveau isolés de la chambre de pompe. On peut noter que la lèvre supérieure 632 est directement contact du produit fluide, alors que la lèvre inférieure n'est pas directement en contact du produit fluide. Ainsi, la lèvre supérieure coulisse dans la partie supérieure du fût défini par la section supérieure au-dessus du système de tourbillonnement. Or, cette partie du fût a une meilleure qualité de surface que la partie inférieure de la section supérieure qui s'étend juste en-dessous du système de tourbillonnement, qui peut être endommagée par le retrait de la broche de moulage. D'autre part, la lèvre inférieure 633 coulisse contre la section de surface inférieure, qui ne peut pas avoir été endommagée par le retrait de la broche de moulage qui a servi à former le système de tourbillonnement, du fait que son diamètre interne est supérieur à celui de la broche. Une caractéristique intéressante de l'invention réside dans le fait que l'organe de piston 640 est sollicité contre la paroi d'appui 621 et se déplace sous l'effet de l'augmentation de pression à l'intérieur de la chambre de pompe en éloignement de cette paroi d'appui. Ceci est notamment rendu possible grâce aux trous de passage de produit fluide 634 qui traversent le plateau 631 formant le piston différentiel. On peut aussi dire que la paroi d'appui définit un élément de paroi de la chambre de pompe. Un tel déplacement du piston différentiel en éloignement de la paroi 5 d'appui, en association avec un système de tourbillonnement formé dans la paroi de distribution, est avantageux sur le plan du démoulage étant donné que la lèvre supérieure 632 coulisse de manière étanche sur la partie supérieure du fût de coulissement qui ne pas être détériorée par le retrait de la broche de moulage formant l'empreinte négative qui a servi à mouler le système de 10 tourbillonnement. On peut également noter que la position de repos est atteinte lorsque le cordon de butée 6241 formé par la paroi de guidage 624 est en appui sous l'épaulement extérieur 6141. D est tout à fait envisageable de supprimer la lèvre supérieure 632 du 15 piston différentiel, de sorte que ce dernier n'est alors pourvu que d'une lèvre inférieure 633 et d'une arête de butée. En effet, l'arête garantit une étanchéité statique au repos, ce qui est suffisant. Quant à la lèvre inférieure, elle garantit r • Pétanchéité dynamique lors de l'actionnement. Ainsi, la paroi frontale 6323 du piston différentiel qui fait face à l'orifice de distribution et au système de 20 tourbillonnement peut rester décollée de la paroi de distribution, hormis au niveau de la lèvre inférieure 633. Dès que l'arête de butée se décolle de la surface de butée, le passage entre la chambre et l'orifice de distribution est établi. Il n'est pas nécessaire d'avoir une lèvre d'étanchéité qui vient racler la section supérieure au niveau de laquelle est 25 formée l'orifice de distribution, et avantageusement le système de tourbillonnement. Grâce à l'invention, une lèvre du piston différentiel coulisse dans un cylindre qui ne peut pas être endommagé par le retrait de la broche de moulage, et particulièrement dans le cas où la paroi de distribution forme un système de 30 tourbillonnement. Le décalage de diamètre entre la section supérieure et la section inférieure permet d'obtenir ce résultat. D'autre part, le coulissement du poussoir autour de la douille du corps permet de réahser un distributeur dont le diamètre du poussoir est identique ou supérieur à celui du corps et du réservoir. Le poussoir peut s'étendre dans le prolongement du réservoir, ce qui confère un aspect plus tubulaire au distributeur. Cette caractéristique peut être mise en œuvre indépendamment des caractéristiques liées au piston différentiel. 621. This has the effect of sliding the lips 632 and 633 inside the distribution wall 623 and of loosening the sealed contact at the level of the abutment edge 6321. The lips thus move until the upper lip 632 arrives at the swirl system 626. At this time, the fluid under pressure in the pump chamber finds an outlet passage through the swirl system and the dispensing orifice. The passage thus remains open as long as the pressure inside the chamber can overcome the force of the spring. As soon as the pressure decreases below a certain threshold inside the chamber, the spring pushes the differential piston towards the rest position shown in the figures. The swirl system and the dispensing orifice are then again isolated from the pump chamber. It can be noted that the upper lip 632 is directly in contact with the fluid, while the lower lip is not directly in contact with the fluid. Thus, the upper lip slides in the upper part of the barrel defined by the upper section above the swirl system. However, this part of the barrel has a better surface quality than the lower part of the upper section which extends just below the swirl system, which can be damaged by the withdrawal of the molding pin. On the other hand, the lower lip 633 slides against the lower surface section, which cannot have been damaged by the removal of the molding spindle which served to form the swirl system, since its internal diameter is greater to that of the spindle. An advantageous characteristic of the invention resides in the fact that the piston member 640 is biased against the bearing wall 621 and moves under the effect of the pressure increase inside the pump chamber in distance from this support wall. This is in particular made possible thanks to the fluid passage holes 634 which pass through the plate 631 forming the differential piston. It can also be said that the support wall defines a wall element of the pump chamber. Such displacement of the differential piston away from the support wall 5, in association with a swirl system formed in the distribution wall, is advantageous in terms of demoulding since the upper lip 632 slides in leaktight manner on the upper part of the sliding barrel which will not be damaged by the removal of the molding spindle forming the negative imprint which was used to mold the swirl system. It may also be noted that the rest position is reached when the stop bead 6241 formed by the guide wall 624 is in abutment under the outer shoulder 6141. It is quite possible to remove the upper lip 632 of the differential piston , so that the latter is then only provided with a lower lip 633 and an abutment edge. Indeed, the edge guarantees a static seal at rest, which is sufficient. As for the lower lip, it guarantees dynamic sealing during actuation. Thus, the front wall 6323 of the differential piston which faces the dispensing orifice and the swirl system can remain detached from the dispensing wall, except at the level of the lower lip 633. As soon as the stop edge is takes off from the abutment surface, the passage between the chamber and the dispensing orifice is established. It is not necessary to have a sealing lip which scrapes the upper section at the level of which the dispensing orifice is formed, and advantageously the swirl system. Thanks to the invention, a lip of the differential piston slides in a cylinder which cannot be damaged by the withdrawal of the molding spindle, and particularly in the case where the distribution wall forms a swirl system. The difference in diameter between the upper section and the lower section achieves this result. On the other hand, the sliding of the plunger around the bushing of the body makes it possible to re-position a dispenser whose diameter of the plunger is identical to or greater than that of the body and of the reservoir. The pusher can extend in the extension of the reservoir, which gives a more tubular appearance to the dispenser. This characteristic can be implemented independently of the characteristics linked to the differential piston.

Claims

Revendications claims
1.- Organe de distribution de produit fluide (600) comprenant un paroi de distribution (623) définissant une surface externe et une surface interne, ladite paroi étant traversée par un orifice de distribution (625) reliant la surface interne à la surface externe, la surface interne formant un fût de coulissement étanche pour un piston (632, 633) apte à se déplacer en contact étanche dans ledit fût pour démasquer sélectivement l'orifice de distribution, ledit piston formant un élément de paroi d'une chambre de produit fluide (1) dans laquelle du produit fluide est sélectivement mis sous pression, caractérisé en ce que la surface interne s'étend sur deux sections de surface, à savoir une section supérieure (6232) et une section inférieure1.- fluid product distribution member (600) comprising a distribution wall (623) defining an external surface and an internal surface, said wall being traversed by a distribution orifice (625) connecting the internal surface to the external surface, the internal surface forming a sealed sliding barrel for a piston (632, 633) capable of moving in sealed contact in said barrel to selectively unmask the dispensing orifice, said piston forming a wall element of a chamber of fluid product (1) in which fluid is selectively pressurized, characterized in that the internal surface extends over two surface sections, namely an upper section (6232) and a lower section
(6242), la section supérieure présentant un diamètre interne inférieur à celui de section inférieure, l'orifice de distribution étant formé au niveau de la section supérieure, le piston comprenant une lèvre d'étanchéité (633) en contact de coulissement étanche avec la section inférieure. (6242), the upper section having an internal diameter smaller than that of the lower section, the dispensing orifice being formed at the level of the upper section, the piston comprising a sealing lip (633) in sealed sliding contact with the lower section.
2.- Organe de distribution de produit fluide selon la revendication 1, dans lequel le piston comprend une seconde lèvre (632) en contact de coulissement étanche avec la section supérieure. 2. A fluid dispenser member according to claim 1, wherein the piston comprises a second lip (632) in sealed sliding contact with the upper section.
3.- Organe de distribution de produit fluide selon la revendication 1, dans lequel le piston est hors de contact de la section supérieure. 3. A fluid dispenser member according to claim 1, wherein the piston is out of contact with the upper section.
4.- Organe de distribution de produit fluide selon l'une quelconque des revendications précédentes, dans lequel le piston comprend une arête de butée étanche (6321) en contact de butée étanche contre une surface de butée (6213), le piston étant sollicité élastiquement contre cette surface de butée étanche en position de repos, le contact étanche entre l'arête de butée et la surface de butée isolant hermétiquement la chambre de l'orifice de distribution. 4. A fluid dispenser member according to any one of the preceding claims, in which the piston comprises a sealed stop edge (6321) in sealed stop contact against a stop surface (6213), the piston being resiliently biased. against this sealed abutment surface in the rest position, the sealed contact between the abutment edge and the abutment surface hermetically insulating the chamber from the dispensing orifice.
5.- Organe de distribution de produit fluide selon la revendication 4, dans lequel la surface de butée est tronconique et sollicite l'arête de butée radialement vers l'extérieur. 5. A fluid dispenser member according to claim 4, in which the abutment surface is frustoconical and urges the abutment edge radially outwards.
6.- Organe de distribution de produit fluide selon l'une quelconque des revendications précédentes, dans lequel les sections de surface sont cyUndriques et reliées par une section de transition (6243), qui est avantageusement tronconique. 6. A fluid dispenser member according to any one of the preceding claims, in which the surface sections are cylindrical and connected by a transition section (6243), which is advantageously frustoconical.
7.- Organe de distribution de produit fluide selon l'une quelconque des revendications précédentes, dans lequel la paroi de distribution est formée par une jupe sensiblement cylindrique (622) comprenant en outre une paroi de guidage (624) définissant une surface interne qui s'étend avantageusement sensiblement dans le prolongement de la section inférieure, la paroi de guidage comprenant des moyens d'accrochage internes (6241) en butée avec des moyens de maintien externes (6141). 7.- fluid dispenser member according to any one of the preceding claims, wherein the dispensing wall is formed by a substantially cylindrical skirt (622) further comprising a guide wall (624) defining an internal surface which s advantageously extends substantially in the extension of the lower section, the guide wall comprising internal hooking means (6241) in abutment with external holding means (6141).
8.- Organe de distribution de produit fluide selon la revendication 4 ou 5, dans lequel la paroi de distribution est formée par un poussoir comprenant en outre une paroi d'appui qui se prolonge sur sa périphérie externe par la paroi de distribution, la surface de butée étant formée par la paroi d'appui. 8. A fluid dispenser member according to claim 4 or 5, wherein the dispensing wall is formed by a pusher further comprising a support wall which extends on its outer periphery by the dispensing wall, the surface abutment being formed by the support wall.
9.- Organe de distribution de produit fluide selon l'une quelconque •des revendications précédentes, dans lequel la surface interne, au niveau de la section supérieure, forme un système de tourbillonnement de produit fluide (626) immédiatement en amont de l'orifice de distribution. 9. A fluid dispenser member according to any one of the preceding claims, in which the internal surface, at the level of the upper section, forms a swirl system of fluid product (626) immediately upstream of the orifice. of distribution.
10.- Organe de distribution de produit fluide selon l'une quelconque des revendications précédentes, dans lequel la lèvre d'étanchéité (633) en contact avec la section inférieure est sollicitée élastiquement en direction de la section supérieure en position de repos. 10.- fluid dispenser member according to any one of the preceding claims, wherein the sealing lip (633) in contact with the lower section is resiliently biased towards the upper section in the rest position.
PCT/FR2005/050093 2004-02-23 2005-02-14 Liquid product dispensing device WO2005084820A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2005800057117A CN1921952B (en) 2004-02-23 2005-02-14 Fluid dispenser member
BRPI0507319-7A BRPI0507319B1 (en) 2004-02-23 2005-02-14 FLUID PRODUCT DISTRIBUTION ELEMENT
EP05717711.5A EP1722896B1 (en) 2004-02-23 2005-02-14 Liquid product dispensing device
ES05717711.5T ES2532120T3 (en) 2004-02-23 2005-02-14 Fluid Product Distribution Body
JP2006553629A JP2007522933A (en) 2004-02-23 2005-02-14 Fluid dispenser member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401789A FR2866579B1 (en) 2004-02-23 2004-02-23 FLUID PRODUCT DISPENSING MEMBER
FR0401789 2004-02-23

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WO2005084820A1 true WO2005084820A1 (en) 2005-09-15

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PCT/FR2005/050093 WO2005084820A1 (en) 2004-02-23 2005-02-14 Liquid product dispensing device

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EP (1) EP1722896B1 (en)
JP (1) JP2007522933A (en)
CN (1) CN1921952B (en)
BR (1) BRPI0507319B1 (en)
ES (1) ES2532120T3 (en)
FR (1) FR2866579B1 (en)
WO (1) WO2005084820A1 (en)

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Publication number Priority date Publication date Assignee Title
FR2919275A1 (en) * 2007-07-24 2009-01-30 Valois Sas FLUID PRODUCT DISPENSING MEMBER.

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Publication number Priority date Publication date Assignee Title
CA2827824A1 (en) * 2011-03-14 2012-09-20 Sca Hygiene Products Ab A dispensing mechanism and a dispenser
GB201312362D0 (en) * 2013-07-10 2013-08-21 Leafgreen Ltd A divider part for containers
FR3052446B1 (en) * 2016-06-10 2018-07-13 Karine Courtin DEVICE FOR DISPENSING FLUID PRODUCT

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US4271990A (en) * 1978-05-12 1981-06-09 Security Plastics, Inc. Pumping system for dispensing product from a container
US4591077A (en) * 1985-01-28 1986-05-27 Corsette Douglas Frank Continuous discharge dispenser
WO1997023304A1 (en) * 1995-12-22 1997-07-03 Valois S.A. Precompression pump formed within the pusher element

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US4640443A (en) * 1983-06-08 1987-02-03 Corsette Douglas Frank Manually operated dispensing pump

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Publication number Priority date Publication date Assignee Title
US4271990A (en) * 1978-05-12 1981-06-09 Security Plastics, Inc. Pumping system for dispensing product from a container
US4591077A (en) * 1985-01-28 1986-05-27 Corsette Douglas Frank Continuous discharge dispenser
WO1997023304A1 (en) * 1995-12-22 1997-07-03 Valois S.A. Precompression pump formed within the pusher element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919275A1 (en) * 2007-07-24 2009-01-30 Valois Sas FLUID PRODUCT DISPENSING MEMBER.
WO2009019398A2 (en) * 2007-07-24 2009-02-12 Valois Sas Fluid product dispensing member
WO2009019398A3 (en) * 2007-07-24 2009-05-07 Valois Sas Fluid product dispensing member
JP2010534129A (en) * 2007-07-24 2010-11-04 バルワー エス．アー．エス． Fluid discharge member
US8028863B2 (en) 2007-07-24 2011-10-04 Valois Sas Fluid dispenser member

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JP2007522933A (en) 2007-08-16
FR2866579B1 (en) 2006-05-26
EP1722896A1 (en) 2006-11-22
BRPI0507319B1 (en) 2018-05-02
ES2532120T3 (en) 2015-03-24
CN1921952B (en) 2012-02-22
EP1722896B1 (en) 2014-12-17
BRPI0507319A (en) 2007-06-26
CN1921952A (en) 2007-02-28
FR2866579A1 (en) 2005-08-26

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