EP3999246A1

EP3999246A1 - Fluid dispenser

Info

Publication number: EP3999246A1
Application number: EP20743641.1A
Authority: EP
Inventors: Guillaume Boulais
Original assignee: GB Developpement
Current assignee: GB Developpement
Priority date: 2019-07-18
Filing date: 2020-07-16
Publication date: 2022-05-25
Also published as: US11925947B2; KR20220035480A; CN114514182A; JP2022535154A; FR3098735A1; US20220266281A1; WO2021009324A1

Abstract

The invention relates to a fluid dispensing device comprising: - an outlet (24), a bag (2) having an internal volume for containing a fluid, the internal volume being delimited at least partially by a movable wall (4), a container (6) arranged to contain the fluid, a bag stopper (40), a cavity (122), a container opening (124) forming a junction between the container (6) and the cavity (122); characterised in that the bag stopper is arranged to be mounted by insertion into the cavity (122) of the device so as to be mounted extending: - through the bag (2) at least partially while passing through the movable wall (4) or - along the bag (2) at least partially, the device comprising an inlet opening arranged for inserting the bag stopper (40) into the device from outside the device and opening into the cavity (122).

Description

DESCRIPTION

TITLE: Fluid dispenser

Technical area

The present invention relates to a device for dispensing a fluid.

Such a device allows a user to dispense a fluid. The field of the invention is more particularly that of the distribution of products such as liquids, gels or creams, for example for the pharmaceutical or cosmetic or agro-food industry.

State of the prior art

Fluid distributors are known, such as disclosed for example by document WO2015155318.

In this area, manufacturers are making permanent efforts to try to improve and / or simplify the compactness, use, ergonomics, manufacture, reloading, priming, hygiene and / or recycling of such materials. fluid dispensing devices.

The aim of the present invention is to solve at least one of these problems.

Disclosure of the invention

According to a first aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by a device for dispensing a fluid comprising:

- a pocket having an internal volume arranged to contain the fluid, the internal volume being delimited at least in part by a deformable wall,

- a reservoir having an inner envelope designed to contain the fluid,

- a supply orifice connecting the interior volume of the reservoir to the interior volume of the bag,

- Preferably, a dispensing head fixed to the deformable wall of the pouch so that the dispensing head is carried by the deformable wall according to different possible positions relative to the tank, at least of which:

* a stable position in the absence of external force exerted on the head and

* an inclined position at an angle of inclination relative to the stable position when exerting an external force on the head, so as to deform the deformable wall and thus reduce the internal volume of the pocket relative to the stable position.

The device according to the invention can further comprise,

- a distribution channel, preferably located in the distribution head, and arranged to conduct the fluid, in a distribution direction, from the interior volume of the bag and to an outlet, said outlet being positioned at one end of the distribution head,

- a distribution orifice connecting the internal volume of the bag to the distribution channel.

The dispensing head preferably extends longitudinally over a length of at least 10 mm in a longitudinal direction connecting the dispensing orifice to one end of the dispensing head and / or a direction connecting the dispensing orifice to the exit and / or the area defined below.

The dispensing head of the device according to the invention can extend longitudinally over a length of at least 20 mm, preferably at least 30 mm, ideally at least 40 mm.

The dispensing head of the device according to the invention may be a straight part extending longitudinally in the longitudinal direction.

The dispensing head can be longer (along the longitudinal direction) than it is wide (perpendicular to the longitudinal direction).

Preferably, the dispensing head, outside of its stable position and according to various possible inclined positions, can be arranged to reach a position of maximum inclination when the angle of inclination is inclined by at least 15 °, or even 20 degrees (°), preferably at least 30 degrees or even at least 45 degrees, with respect to said stable position, said position of maximum inclination being able to be arranged to reduce the internal volume of the pocket. Preferably, the dispensing head may comprise a contact surface arranged to, from outside the device, receive an external force preferably orthogonal to the longitudinal direction of the dispensing head positioned in the stable position.

The contact surface of the device according to the invention can be at least 10 mm ² , preferably at least 30 mm ² , preferably at least 60 mm ² , more preferably at least 100 mm ² .

The dispensing head can be arranged to tilt on the side opposite to the contact surface.

Preferably, in the stable position of the dispensing head, the contact surface forms (preferably over a width of less than 15 mm and over an area of at least 30 mm ² , preferably over at least 60 mm ² , preferably over at least 100 mm ² ) an angle comprised between _-45 ° and 45 ° (preferably between _-30 ° and 30 °, more preferably between _-20 ° and 20 °) with a direction in which s 'extends the distribution channel at the outlet of the pocket ie at the junction between the pocket and the distribution channel.

The dispensing head may be a straight part extending longitudinally in the longitudinal direction.

In this case, the dispensing head and the reservoir can extend longitudinally in the longitudinal direction when the head is in its stable position. In other words, the dispensing head and the reservoir can extend in the same direction of the device according to the invention.

Preferably, the dispensing head may comprise a dispensing valve located in the dispensing channel, and which, in an open state allows passage of fluid from the dispensing channel to the outlet, and, in a closed state, does not allow it. not.

In this case, the device according to the invention (and in particular the dispensing valve) can be arranged to remain in its closed state as long as the angle of inclination is less than 5 °, preferably 2 °. , relative to the stable position.

The distribution head can include two separable parts, including:

- an upper part, in which the dispensing valve is located, and,

- a lower part fixed to the pocket and comprising an anti-drip device,

the anti-drip device being located at the junction of these two parts and comprising a valve in the distribution channel, which:

- is arranged to be open and allow the passage of the fluid towards the outlet when these two parts are assembled, and,

- is arranged to be closed when these two parts are separated so as to prevent an escape of fluid from this lower part to the outside of the device.

The dispensing valve may comprise a part arranged to maintain the valve of the anti-drip device in its open state, that is to say in a position which allows the passage of the fluid towards the outlet, when the two parts of the head are assembled. Said part of the dispensing valve may be one end of the dispensing valve and is preferably triangular or tapered in shape.

Preferably, the deformable wall can comprise an asymmetry around an axis, so that the pocket is arranged to promote an inclination of the dispensing head in a favored direction of inclination and / or so as to reduce the force of distribution in one direction, said favored direction preferably being away from the contact surface and / or the outlet.

The device according to the invention can further comprise means for screwing the bag to the reservoir.

In another embodiment, the bag and the reservoir of the device according to the invention may be integral with one another so as to form a single and unique part, said part being obtainable by blowing.

In other embodiments, the pocket may include a tip arranged to fit into the reservoir.

The end of the tip may form the feed orifice.

The tip can be pushed into the reservoir so as to secure the bag to the reservoir.

In this case, the reservoir may comprise a sealing skirt positioned at the level of the supply orifice, said skirt comprising a cover, preferably mono-material, arranged to block the flow of fluid contained in the reservoir to the bag. as long as the end of the pocket is not pushed into the reservoir, for example as long as the end of the pocket is not fitted and / or screwed into the reservoir. Preferably, the end piece can be designed to pierce the cover. It can be at least 8 mm long (preferably in the longitudinal direction).

The device according to the invention may comprise a supply valve positioned at the level of the supply orifice, and which, in an open state, allows the passage of the fluid contained in the reservoir towards the bag, and which, in a closed state, does not allow it.

In this case, the reservoir can be arranged to reduce its internal volume after each state of opening of the supply valve.

The tank can be fitted with a part comprising:

- the supply valve housed at a supply seat, said valve being located at the junction between the interior volume of the bag and an interior volume of the reservoir, and / or

- a support and / or stopper preferably provided with a cover housed in a dispensing seat, said support and / or stopper being located at the junction between the internal volume of the bag and the dispensing channel, and / or

- a connecting element connecting the supply valve and the support and / or cap and / or dispensing valve, said connecting element preferably being arranged to deform or break during a deformation of the bag

this aspect of the invention can be claimed as such independently of the dispensing head and / or its inclination.

This part allows mounting of the supply valve by passing through the pocket.

The connecting element can be flexible or breakable after mounting the device according to the invention.

The dispensing head can be equipped with a perforator designed to perforate the cap of the stopper housed in the dispensing seat.

In one embodiment, the deformable wall of the pocket of the device according to the invention may comprise a bellows, the device possibly comprising locking means arranged to limit and / or prevent stretching of one of the sides of the bellows during any inclined position of the dispensing head.

The locking means can be and / or comprise a rigid housing. The dispensing head can be fitted with a pusher designed for:

- lie on a pocket holding surface, preferably on a bellows holding surface, and

- Keep said holding surface fixed relative to the dispensing head.

The support surface can be flat and / or rigid.

The locking means can press on the pusher, said pusher itself being able to press on the retaining surface.

The pusher and the retaining surface can be kept assembled by clamping the locking means on a housing containing the reservoir.

The holding surface can be rigid.

The device according to the invention can comprise means for screwing the bag onto the dispensing head.

The deformable wall of the pocket can comprise areas of weakness and / or joints arranged to allow at least one inclined position (with a preferential angle allowing a dosage, defining a volume of fluid leaving the pocket), and preferably stable, of the dispensing head in the absence of any external force applied to the contact surface.

The reservoir may comprise a deformable envelope delimiting at least in part the internal volume of the reservoir, said deformable envelope being able to comprise successive radially corrugations.

According to a second aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by a device for distributing a fluid, comprising:

- a pocket comprising an interior pocket, said interior pocket having an interior volume arranged to contain the fluid,

- a movable wall being arranged to, under the exertion of a bearing pressure preferably on a bearing surface, to reduce the internal volume of the inner pocket by deforming and / or by moving,

- an outlet arranged to distribute the fluid,

characterized in that the interior volume of the interior pocket is delimited at least in part by:

- a piston integral with a junction wall or a bottom wall (21),

a housing of the piston arranged to receive the piston and guide it during an axial movement of said piston in the housing. According to the second aspect of the invention:

- the piston or the housing may be formed at least in part by at least part of the movable wall, and / or:

o the piston or the housing may be in direct contact with a wall forming the bearing surface; or

o the piston or the housing may be formed at least in part by at least part of the bearing surface.

According to the second aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims preferably by the device for dispensing a fluid, comprising:

- a pocket comprising an inner pocket and an outer pocket, said inner pocket being located at least partly in the outer pocket, said inner and outer pockets each having an inner volume arranged to contain the fluid, said inner volume of the outer pocket being delimited at least in part by a movable wall, said movable wall being arranged to, under the exertion of a bearing pressure, reduce the internal volume of the internal pocket and the internal volume of the external pocket by deforming and / or by moving,

- an outlet arranged to distribute the fluid.

The interior volume of the interior pocket is preferably delimited at least in part by:

- a piston integral with a junction wall delimiting at least in part the internal volume of the external pocket,

a housing of the piston arranged to receive the piston and guide it during an axial movement of said piston in the housing.

The device according to the invention is arranged to guide the fluid according to a circuit comprising:

- a first route, passing:

o from the inside of the outer pocket to the inside of the inner pocket (preferably of the piston) via at least one connecting hole connecting the inner volume of the outer pocket to the inside of the inner pocket (preferably of the piston), and

- a second path, passing from the inside of the inner pocket (preferably of the piston) to the exit. The device according to the invention can comprise braking means arranged to block an axial movement of the piston in the housing reducing the internal volume of the internal pocket and of the external pocket when the movable wall is subjected to a bearing pressure of less than a threshold force.

In that case :

- the braking means may be integral with the piston and may preferably comprise at least one tongue inclined towards the outside of the piston, and / or

- The braking means may be integral with the housing of the piston and may preferably comprise at least one tongue inclined towards the interior of the housing.

The device according to the invention can be arranged to guide the fluid along the second path, at each pressing pressure on the movable wall greater than the threshold force and / or at each decrease in the internal volume of the interior pocket and of the pocket. outside for which the connection hole is closed.

The device according to the invention can be arranged to guide the fluid along the first path, after the end of each pressing pressure greater than the threshold force, and / or at each increase in the interior volume of the interior pocket and of the pocket. outside for which the connection hole is open.

The connection hole:

- can be formed at a junction between one end of the piston and one end of the piston housing, and / or

- may include a hole located in the piston housing.

The connection orifice may preferably be arranged for:

- close when the piston moves reducing the internal volume of the pocket,

- open during a movement of the piston increasing the internal volume of the pocket.

The device according to the invention may comprise a distribution channel arranged to conduct the fluid coming from the inner bag towards the outlet.

In this case, the device according to the invention can comprise a dispensing valve located in the dispensing channel and arranged to lead the fluid from the inner bag to the outlet.

The device according to the invention can also comprise: - the distribution valve,

a mixer designed to receive different separate streams of fluid and mix them in the form of a spray at the outlet.

One end of the distribution valve may be integral with a rod arranged to be inserted into the mixer so as to form different channels arranged to lead the different separate flows of fluid to the mixer.

The movable wall can be a deformable wall.

The movable wall can include the junction wall.

The movable wall can be separated from the junction wall.

The movable wall can be rigid.

The device according to the invention may comprise a reservoir communicating with the outer bag via a supply orifice, said reservoir comprising an interior volume arranged to contain the fluid, said interior volume being delimited at least in part by a deformable envelope.

The deformable shell of the reservoir may comprise successive radial corrugations around an axis.

The device according to the invention can further comprise an outer pocket, said inner pocket being located at least partly in the outer pocket, the inner pocket having an inner volume arranged to contain the fluid, the outer pocket having an inner volume which 'is not arranged to contain the fluid, said internal volume of the outer pocket being delimited at least in part by the movable wall, said movable wall being arranged to, under the exertion of the support pressure, reduce the internal volume of the outer pocket by deforming and / or by moving, the device being arranged to guide the fluid according to a circuit comprising a path passing directly from a reservoir and / or from the inside of the piston to the inside of the inside pocket, without going through the inside of the outside pocket.

The device according to the invention can further comprise braking means arranged to block an axial movement of the piston in the housing reducing the internal volume of the internal pocket when the movable wall is subjected to a bearing pressure below a threshold force. , the braking means preferably comprising: a lug or tab located on the outside of the piston and / or the inside of the housing, this lug or tab being arranged to rub or be blocked by a surface respectively from the inside of the housing and / or from the outside of the piston, and / or

- a lug or tongue located on the outside of the housing and / or the inside of a wall arranged around the housing, this lug or tongue being arranged to rub or be blocked by a respective interior surface of the wall arranged around the housing and / or exterior of the accommodation.

The interior pocket is preferably located under an exterior surface of the device within 10mm of this exterior surface.

The exercise of a support pressure preferably allows a lateral exit of the product through the exit and a displacement of the movable wall towards the reservoir or next to the reservoir.

In planes perpendicular to the direction of axial movement of the piston relative to the housing, the inner pocket preferably has a section smaller than the section of the outer pocket and / or the area of the bearing surface arranged to receive the pressure. support from outside the device and / or to a section of the reservoir.

The pocket can be located:

- directly under a bearing surface arranged to receive the bearing pressure from outside the device, or

- directly under an assembly consisting of a bearing surface arranged to receive the bearing pressure from outside the device and a channel comprising a valve.

The device according to the invention can comprise return means, preferably non-metallic, arranged to bring the piston out of its housing.

The area of an internal section of the housing may be at least halved with respect to the area of a bearing surface arranged to receive the bearing pressure from outside the device.

According to a third aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by a device for dispensing a fluid comprising: - output,

- a pocket having an internal volume for containing a fluid, the internal volume being delimited at least in part by a movable wall,

- a reservoir arranged to contain the fluid,

- a pocket cap,

- a cavity,

- a reservoir orifice forming a junction between the reservoir and the cavity.

The pocket stopper is preferably arranged to be mounted by insertion into the cavity of the device so as to be mounted by extending:

- preferably from the reservoir to the outlet, passing through the pocket at least partially while passing through the movable wall or

- along the pocket at least partially.

The device preferably comprises an inlet orifice arranged to insert the pocket stopper into the device from outside the device and opening into the cavity.

The pocket stopper may include an interior volume into which is inserted a dispensing valve which in an open state allows fluid to flow from the interior volume of the bag to the outlet and in a closed state does not.

The interior volume of the pocket cap preferably connects the reservoir to the outlet.

The interior volume of the pocket cap preferably has a volume of at least 1 cm ³ , or 3 cm ³ or even 5 cm ³ .

The pocket cap may preferably include a supply valve which in an open state allows passage of fluid from the reservoir to the interior volume of the pocket and in a closed state does not allow, and / or a delivery valve which in an open state allows passage of fluid from the interior volume of the bag to the outlet and a closed state does not.

Preferably, the distribution and supply valves can be integral and in one piece.

Preferably, the pocket cap may include a housing arranged to accommodate the supply valve and the dispensing valve.

The pocket cap may include an internal volume, called the head reservoir, arranged to open on one side to the reservoir opening and on the other. side on a supply port connecting the head reservoir to the interior volume of the bag.

The internal volume of the head reservoir can be at least 1cm ³ , or even at least 3 cm ³ or even at least 5 cm ³ and / or can include air or fluid to be distributed.

The device may include a supply valve which in an open state allows fluid to flow from the reservoir to the interior volume of the bag and in a closed state does not allow the supply valve to be located in the bag cap. so as to, in its open state, open the feed port and, in its closed state, close the feed port.

The pocket stopper can be mounted in the cavity so that a wall of the pocket stopper, inserted in the reservoir opening and delimiting at least in part the head reservoir, forms, preferably at the end of screwing, a junction sealed between the interior volume of the bag and the reservoir and / or between the interior volume of the bag and the head reservoir.

The head cap may further comprise a second part, preferably in which is positioned a distribution channel, separate from the head reservoir and arranged to conduct the fluid from the interior volume of the bag towards the outlet.

The second part may include a dispensing valve which in an open state allows passage of fluid from the interior volume of the bag to the outlet and in a closed state does not.

The device can be arranged to guide the fluid according to a circuit comprising:

- a first path, passing from the reservoir to the head reservoir through the reservoir opening, then

- a second path passing from the head tank to the interior volume of the bag via the supply orifice, then

- a third path connecting the interior volume of the pocket to the outlet via the second part of the pocket stopper.

The device can be arranged to guide the fluid along the first and second path, after each end of pressing pressure on the mobile wall of the pocket and / or on each increase in the internal volume of the pocket. The device can be arranged to guide the fluid along the third path, each time you press down on the mobile wall of the pocket and / or each decrease in the internal volume of the pocket, said supply orifice being able to be closed by the valve.

The reservoir may comprise at least one flexible wall arranged to be inserted into the head reservoir as the reservoir is emptied of its fluid.

The pocket stopper may include fixing means arranged to fix the pocket stopper to walls delimiting the cavity by screwing.

The fixing means may comprise an anti-unlocking system for the pocket stopper to the cavity designed to prevent loosening of the pocket stopper.

The reservoir, the cavity and the pocket may be integral so as to form a single and unique part.

The reservoir, the cavity and the pocket, with the exception of the mobile wall of the pocket, may be integral so as to form a single piece.

The mobile wall of the pocket can be assembled by welding to the single part formed by the cavity and the reservoir.

The reservoir and the cavity can be produced by polymer injection or by 3D printing.

The reservoir can extend in a longitudinal direction centered on a first axis of elongation,

the pocket being able to extend in a longitudinal direction centered on a second axis of elongation and / or the pocket stopper being able to extend in a longitudinal direction centered on a third axis of elongation

the first axis being able to be offset relative to the second axis and / or to the third axis.

The first axis of elongation and / or the second axis of elongation and / or the third axis of elongation may preferably be parallel.

The pocket stopper may extend in a direction of elongation, and may be arranged to be insertably mounted into the cavity in a direction of insertion parallel to its direction of elongation, the inlet port and the socket. reservoir port being aligned in the direction of elongation. The cavity may include deformable walls arranged to laterally increase the capacity of the reservoir.

The plug may include a vent.

The stopper can be arranged to slide in the bottom wall and / or can include a flexible or breakable part.

According to a fourth aspect of the invention, the invention makes it possible to achieve at least one of the aforementioned aims by a device for dispensing a fluid comprising:

- output,

- a pocket having an internal volume for containing a fluid, the internal volume of the pocket being delimited at least in part by a movable wall,

a reservoir arranged to contain the fluid and comprising two openings, an upper opening facing towards the pocket and a lower opening, said reservoir preferably being arranged to reduce its internal volume when the fluid exits from the reservoir,

- a distribution valve which, in an open state allows passage of the fluid from the bag to the outlet, and, in a closed state, does not allow it,

- a supply valve which, in an open state, allows the passage of the fluid contained in the reservoir towards the bag, and which, in a closed state, does not allow it, said lower opening being arranged to allow passage of the fluid , preferably a passage of a cannula (or filling rod) transporting the fluid, so as to fill the reservoir at least partially with fluid at least up to the supply valve and preferably so as to fill with fluid also at least partly the volume inside the pocket.

The reservoir may be delimited at least in part by a movable piston arranged to move so as to reduce the internal volume of the reservoir when the fluid exits from the reservoir, this piston being provided with the lower opening, the lower opening being closed by a removable plug.

The removable stopper is preferably screwed onto the plunger. The piston may be provided with at least one hole arranged to allow passage of the fluid between the reservoir and a sealing zone between the piston and a wall along which the piston is arranged to move.

The piston may be included between the reservoir and a bottom wall), said bottom wall being provided with means (for example typically comprising a slot into which a part of the piston is inserted and / or means for clipping the piston) for block the piston from rotating when screwing the stopper onto the piston when the piston is in contact with the back wall.

The piston may have, in a sectional view perpendicular to a direction of movement of the piston along a wall, a polygon shape comprising several sides connected by angles, the device further comprising a force distribution part arranged to press the piston against the wall at several (preferably all) sides of the polygon but outside the angles of the polygon.

The reservoir arranged to contain the fluid can be delimited by:

- a flexible wall comprising the two openings, the upper opening facing towards the pocket and the lower opening, and

- a rigid wall, preferably removable, arranged to block the lower opening.

The flexible wall can be attached to the bag using a watertight junction:

- by welding, and / or

- by clipping, and / or

- by interlocking, and / or

- by compressing the flexible wall around its upper opening between on the one hand a part forming or integral with the pocket and located outside the tank and on the other hand a ring (and whose upper edge can form the seat power supply) inserted inside the tank.

The ring may be integral with the rigid wall.

The area of a section of the top opening (this section being chosen to minimize the area of the top opening) is preferably at least two times (preferably at least four times) smaller than the area of a section of the lower opening (this section being chosen to minimize the area of the lower opening).

The flexible wall and the supply valve can be formed in the same part with continuity of material.

The flexible wall can be arranged to deform so as to reduce the internal volume of the reservoir when fluid exits from the reservoir.

The device, preferably the rigid wall, can be arranged to keep the position of the lower opening in the device fixed with respect to the position of the upper opening in the device.

The first aspect and / or the second aspect and / or the third aspect and / or the fourth aspect of the invention can be combined with one another.

Detailed description of figures

Other advantages and characteristics will become apparent on examination of the detailed description of non-limiting examples, and of the appended drawings in which:

[Fig. l] FIGURE 1 is a side sectional view of a first embodiment of a device according to the invention, a dispensing head of which is in a stable position,

[Fig.2] FIGURE 2 is a side sectional view of the first embodiment of the device according to the invention, the dispensing head of which is in an inclined position,

[Fig.3] FIGURE 3 is a perspective view of the first embodiment of the device according to the invention, the dispensing head of which is removed,

[Fig.4] FIGURE 4 is a zoom of a side view of the first embodiment of the device according to the invention,

[Fig.5] FIGURE 5 is a schematic representation of a non-limiting exemplary embodiment of a stopper provided with a cover according to the invention,

[Fig.6] FIGURE 6 is a schematic representation of a non-limiting exemplary embodiment of a supply valve according to the invention, [Fig.7] FIGURE 7 is a side sectional view of a second embodiment of a device according to the invention, the dispensing head of which is in the stable position,

[Fig.8] FIGURE 8 is a side sectional view of the second embodiment of the device according to the invention, the dispensing head of which is in the inclined position,

[Fig.9] FIGURE 9 is an exploded perspective view of the second embodiment of the device according to the invention, the dispensing head of which is in the stable position

[Fig.10] FIGURE 10 is a side sectional view of a reservoir and a pocket of the second embodiment of the device according to the invention after a partial emptying of the reservoir

[Fig.11] FIGURE 11 is a side sectional view of the bag and the reservoir of the second embodiment of the device according to the invention after complete emptying of the reservoir

[Fig.12] FIGURE 12 is a cross section of the lower part of the tank of figure 10

[Fig.13] FIGURE 13 is an exploded perspective view of a third embodiment of the device according to the invention, the dispensing head of which is in the stable position,

[Fig.14] FIGURE 14 is a side sectional view of the third embodiment of a device according to the invention, the dispensing head of which is in the stable position,

[Fig.15] FIGURE 15 is a side sectional view of the third embodiment of a device according to the invention, the dispensing head of which is in the inclined position,

[Fig.16] FIGURE 16 is a zoom of profile sectional view of the third embodiment of the device according to the invention during stretching of the reservoir 6 for its filling,

[Fig.17] FIGURE 17 is a side sectional view of part of a fourth embodiment of a device according to the invention,

[Fig.18] FIGURE 18 is a perspective view of part of the fourth embodiment of the device according to the invention, [Fig.19] FIGURE 19 is a side sectional view of a fifth embodiment of a device according to the invention,

[Fig.20] FIGURE 20 is an exploded perspective view of the fifth embodiment of the device according to the invention without its reservoir

[Fig.21] FIGURE 21 is a side sectional view of a distribution channel of the fifth embodiment of the device according to the invention

[Fig.22] FIGURE 22 is a cross section of the distribution channel of the fifth embodiment of the device according to the invention

[Fig.23] FIGURE 23 is an exploded perspective view of a sixth embodiment of a device according to the invention,

[Fig.24] FIGURE 24 is a side sectional view of the sixth embodiment of the device according to the invention,

[Fig.25] FIGURE 25 is a side sectional view illustrating a step of a manufacturing process of the sixth embodiment of the device according to the invention,

[Fig.26] FIGURE 26 is a side sectional view of a seventh embodiment of a device according to the invention,

[Fig.27] FIGURE 27 is an exploded perspective view of the seventh embodiment of the device according to the invention,

[Fig.28] FIGURE 28 is an exploded perspective view of an eighth embodiment of a device according to the invention.

[Fig.29] FIGURE 29 is a side sectional view of the eighth embodiment of the device according to the invention.

[Fig.30] FIGURE 30 is a side sectional view of a ninth embodiment of a device according to the invention.

[Fig.31] FIGURE 31 is an exploded perspective view of a tenth embodiment of a device according to the invention.

[Fig.32] FIGURE 32 is a side sectional view of the tenth embodiment of the device according to the invention.

[Fig.33] FIGURE 33 is a side sectional view of an eleventh embodiment of a device according to the invention.

[Fig.34] FIGURE 34 is a side sectional view of a twelfth embodiment of a device according to the invention. [Fig.35] FIGURE 35 is a side sectional view of a thirteenth embodiment of a device according to the invention.

[Fig.36] FIGURE 36 is a side sectional view of part of the thirteenth embodiment of a device according to the invention.

[Fig.37] FIGURE 37 is a side sectional view of part of the thirteenth embodiment of a device according to the invention.

[Fig.38] FIGURE 38 is a side sectional view of part of the thirteenth embodiment of a device according to the invention.

[Fig.39] FIGURE 39 is a side sectional view of part of the thirteenth embodiment of a device according to the invention.

[Fig.40] FIGURE 40 is an exploded perspective view of the thirteenth embodiment of a device according to the invention.

[Fig.41] FIGURE 41 is a side sectional view of a fourteenth embodiment of a device according to the invention.

[Fig.42] FIGURE 42 is a side sectional view of the fourteenth embodiment of a device according to the invention.

[Fig.43] FIGURE 43 is a perspective view of the flexible wall 108 of the fourteenth embodiment of a device according to the invention.

[Fig.44] FIGURE 44 is a side sectional view of the fourteenth embodiment of a device according to the invention.

[Fig.45] FIGURE 45 is a side sectional view of the flexible wall 108 of the fourteenth embodiment of a device according to the invention.

[Fig.46] FIGURE 46 is an exploded perspective view of the fourteenth embodiment of a device according to the invention.

It is understood that the embodiments which will be described below are in no way limiting. It is in particular possible to imagine variants of the invention comprising only a selection of characteristics described below isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the invention. state of the prior art. This selection comprises at least one characteristic preferably functional without structural detail, or with only part of the structural details if that part alone is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.

In particular, all the variants and all the embodiments described can be combined with one another if there is nothing to prevent this combination from a technical point of view.

In the figures, the elements common to several figures retain the same reference.

We will first of all describe, with reference to FIGURES 1 to 6, a first embodiment of a device according to the invention for dispensing a fluid.

In FIGURES 1 to 3, the device 100 for dispensing the fluid comprises:

- a pocket 2 having an internal volume arranged to contain the fluid, the internal volume being delimited at least in part by a deformable wall 4,

- a reservoir 6 having an inner envelope arranged to contain the fluid,

- a supply orifice 8 connecting the internal volume of the reservoir 6 to the internal volume of the pocket 2,

- a dispensing head 10 fixed to the deformable wall 4 of the pocket 2 so that the dispensing head 10 is carried by the deformable wall 4 in different possible positions with respect to the reservoir 6, at least of which:

* a stable position 12 in the absence of external force 18 exerted on the head 10 and

* an inclined position 14 at an inclination angle 16 relative to the stable position 12 when exerting a force

external 18 on the head 10, so as to deform the deformable wall 4 and thus reduce the internal volume of the pocket 2 relative to the stable position 12,

a distribution channel 20 located in the distribution head 10 and arranged to conduct the fluid coming from the interior volume of the bag 2 and towards an outlet 24, said outlet 24 being positioned at one end of the distribution head 10, - a distribution orifice 22 connecting the internal volume of the bag 2 to the distribution channel 20.

In the present description, all the positions of the head are defined in a frame of reference for which the supply orifice and / or the reservoir is fixed.

In the present description, the term “flexible” will be understood to mean any part which can be deformed under the effect of at least 1 kg, having for example a flexural modulus of less than 600 MPa and / or having a sufficiently reduced thickness.

In the present description, the term “rigid” will be understood to mean any part which cannot be deformed under the effect of at most 1 kg, having for example a flexural modulus greater than 600 MPa and / or having a sufficiently large thickness.

The dispensing head 10 comprises a contact surface 26, arranged to, from outside the device, receive an external force 18 orthogonal to the longitudinal direction of the dispensing head 10 positioned in the stable position 12.

The dispensing head 10 of the device 100 extends longitudinally over a length of at least 10 mm (preferably at least 20 mm and even at least 30 mm or even at least 40 mm) following:

- a longitudinal direction (carried by the axis A in Figure 1) connecting the dispensing orifice 22 to one end of the head 10 (preferably carrying the surface 26 and / or the outlet 24), and / or

a direction (carried by the Z axis in FIG. 1) connecting the dispensing orifice 22 to the outlet 24 and / or to the surface 26 (preferably carrying the outlet 24).

In particular, a long lever arm makes it possible to reduce the forces allowing the dispensing, for example less than 1 kg and even less than 0.5 kg if the device is an applicator for facial care (by comparison a common pump requires an effort of support of the order of 2Kg). The dispensing head 10 and the reservoir 6 extend longitudinally in the longitudinal direction when the head is in its stable position.

The distributor head is longer (along the longitudinal direction) than it is wide (perpendicular to the longitudinal direction).

The contact surface 26, accessible from the outside of the device 100 by a hand or even a fingernail of a user, or a face of a user, has a minimum surface area of 10 mm ² , and preferably at least 20 mm ² (preferably at least 30 mm ² , preferably at least 60 mm ² , more preferably at least 100 mm ² ) in the case where the contact surface 26 is intended to be in contact with the face.

The axis A extends in an X direction.

In the stable position of the device according to the invention, the contact surface 26 forms (over a width of less than 15 mm defined in a plane perpendicular to the direction X and over a surface of at least 30 mm ² , preferably over at less 60 mm ² , preferably over at least 100 mm ² ) an angle between _-45 ° and 45 ° (more precisely between _-30 ° and 30 °, more precisely between _-20 ° and 20 °) with the direction X in which the distribution channel 20 extends at the outlet of the pocket 2.

The outlet 24 is located at a distance from the axis A of less than 10 mm.

The surface 26 is located at a distance from the axis A of less than 10 mm.

Exit 24 is located on surface 26.

The distribution head 10 is arranged to incline on the side opposite to the contact surface 26. The distribution head may have at its end an application and / or massage element on the face opposite to the surface 26 which can be made of metal. The device is arranged so that a force on this surface does not or only slightly inclines the head so as to limit or prohibit the exit of product.

The pocket 2 is formed mainly in three parts. A first part, comprising the deformable wall 4, a second part comprising a rigid wall 54 and a third part 84 (of the pocket 2) designed to be fixed to the reservoir 6.

The rigid wall 54 of the pocket 2 is located below the deformable wall 4. The deformable wall 4, more exactly its lower part, is fixed or integral with the rigid wall 54 of the pocket 2 at the level of the connection point 58.

The deformable wall 4 of the pocket 2 is formed by a part 4i and a part 42.

Part 4i and 42 face each other. The part 4i of the deformable wall 4 is arranged to bend under the effect of the compression of the force 18, the part 42 of the deformable wall 4 elongates very slightly under the effect of the traction but moves less than part 4i so as to promote the inclination of the head 10 of the device 100 on the side of part 4i when the external force 18 is exerted at the level of the contact surface 26 of the dispensing head 10. So as to promote the inclination of part 4i, the curvilinear length in a section plane of part 4i of dispensing head 10 in the stable position 12, is higher (ie longer) than that of part 42 (which forms a hinge).

Thus, the deformable wall 4 comprises an asymmetry around an axis A, so that the pocket 2 is arranged to promote an inclination of the dispensing head 10 in a favored direction of inclination, that is to say opposite at the contact surface 26 and / or of the outlet 24. Thus, the parts 4i and 42 are asymmetrical so as to promote the inclination of the dispensing head 10 on the side of the part 4i.

Thus the deformable wall 4 of the pocket 2 comprises:

a certain flexibility to allow the inclination of the dispensing head 10, that is to say the passage from its stable position 12 to a position of inclination 14, and

- an elastic restoring force arranged to reposition the dispensing head 10, inclined according to its inclination position 14, in its stable position 12.

The deformable wall 4 is for example a thin wall and the rigid wall 54 is for example a wall thicker than the wall 4.

Preferably, the deformable wall 4 can be associated with the wall 54 by a “co-molding”, that is to say either by overmolding or bi-injection of materials having different flexibility, preferably with PP for the rigid wall 54 of pocket 2 and of the TPO for the deformable wall 4 of pocket 2.

The parts 4i and 42 of the deformable wall 4 and the rigid wall 54 can also be injected all at once when the rigid wall 54 and the deformable wall 4 of the pocket are for example made of polypropylene.

The deformable wall 4 is preferably made of PP with a polymer or plastomer additive (such as for example Vistamaxx ™ 6202), in order to reduce its hardness so that the hardness of the wall 4 is less than 80 Shore D. Therefore, too great a fineness and weaknesses of the wall 4 are avoided.

The rigid wall 54 is arranged to fit on the third part 84 of the pocket 2.

At the level of the welding or connection point 58, a stop 66 materializes the junction between the third part 84 of the pocket 2 and the rigid wall 54 of the pocket 2. This stop 66 is orthogonal to the axis A when the device 100 is in a stable position 12.

The deformable wall 4 of the pocket 2 holds the dispensing head 10.

The bag 2 is fixed to the distribution head 10. The bag 2 is in particular embedded in the distribution channel 20 of the distribution head 10 via a ring 88.

The dispensing head 10 comprises the ring 88, located at the junction between the internal volume of the bag 2 and the dispensing channel 20, in which the dispensing orifice 22. Specifically, at the level of said junction between the volume. inside the pocket 2 and the distribution channel 20, the deformable wall 4 of the pocket 2 is compressed against the distribution channel 20 by the ring 88. The ring 88 is clamped, fitted into the distribution head 10. The ring 88 is designed to be force-fitted into the distribution channel 20.

The distribution head 10, over its entire length, is traversed by the distribution channel 20.

The distribution channel 20 begins at the level of the distribution orifice 22 and extends to the outlet 24 housed in the distribution head 10.

Further, the dispensing head 10 comprises a dispensing valve 28 located in the dispensing channel 20, and which, in an open state allows passage of fluid from the dispensing channel 20 to the outlet 24, and, in a closed state , does not allow it.

The dispensing valve 28 is typically made from thermoplastic polyolefin or TPO (polyolefin alloys: polyethylene and polypropylene) (flexible, recyclable), PolyPropylene (PP) or modified polyethylene (PE). TPO has the advantage of being flexible, more easily recyclable if we take the same sub-family (for example PP with TPO base PP).

The dispensing valve 28 is arranged to remain in its closed state as long as the angle of inclination 16 is less than 2 ° or 5 ° with respect to the stable position 12. The device 100 is arranged so as not to tilt. more than 2 degrees as long as a threshold force is not reached, said threshold force corresponding, for example, to an external force (perpendicular to the surface 26) of 0.5 kilogram (Kg).

For the device 100, if the external force 18 is greater than or equal to the threshold force of 0.5 kg, then an overpressure in the pocket 2 and in the distribution 20 opens the distribution valve 28, thus causing the distribution of fluid at the outlet 24.

If the external force 18 is less than the threshold force when the dispensing head 10 is in its stable position 12, then the dispensing head 10 does not tilt more than 2 degrees from its stable position 12. In the case where the dispensing head 10 is in the tilting position 14, if the external force 18 is less than the threshold force but present to maintain the elastic return force of the pocket 2 (precisely of the deformable wall 4 ), then the dispensing head 10 remains inclined in its inclined position 14.

In the case of FIGURES 1 to 3, the distribution head 10 comprises two separable parts 10i, IO2, including:

- an upper part 10i, in which the distribution valve 28 is located, and,

- a lower part IO2 fixed to the bag 2 and comprising an anti-drip device 30.

The anti-drip device 30 is located at the junction of these two parts 10i, IO2 and comprises a valve 30i in the distribution channel 20, which:

- is arranged to be open and allow the passage of the fluid to the outlet 24 when these two parts 10i, IO2 are assembled, and,

- Is arranged to be closed when these two parts 10i, IO2 are separated so as to prevent an exit of fluid from this lower part IO2 to the outside of the device.

The upper and lower parts 10i, IO2 are nested one inside the other. The distribution valve 28 comprises a part 28i, in particular one of its ends 28i, arranged to maintain the valve 30i of the anti-drip device 30 in its open state, that is to say in a position which allows the passage of the fluid. towards the outlet 24, when the two parts 10i, IO2 of the head 10 are assembled. The end 28i is tapered in shape so that it can open the valve 30i of the anti-drip device 30 in the direction of an internal wall of the distribution channel 20. In this configuration, the anti-drip device 30 allows the fluid contained in the bag 2 to be directed and routed to the outlet 24.

The distribution valve 28 comprises a part 282 held by clamping between the internal walls of the distribution channel 20.

The distribution valve 28 is housed in a distribution housing 80. The housing 80 is part of the channel 20. Part 282 is stationary between the open and closed states of dispensing valve 28.

A conduit 283 allows the passage of fluid between part 282 and the internal walls of housing 80 in the direction of outlet 24 when valve 28 (and more precisely its movable part 284) is open.

The dispensing valve 28 comprises a movable part 284 which, in the closed state of this dispensing valve 28, is pressed against a dispensing seat 105 so as to plug this dispensing seat 105, and in the open state of this dispensing seat. dispensing valve 28, moves away from the dispensing seat 105 so as to open this dispensing seat 105.

This part 284 is a membrane.

The dispensing valve 28 comprises the part 284 which is inserted into the upper part 10i of the dispensing head 10. The part 284 is the part of the dispensing valve 28 closest to the outlet 24. This part 284 is the membrane. mobile 284 of the distribution valve 28.

Part 284 is movable between the open and closed states of dispensing valve 28.

The dispensing seat 105 is a lateral part of the internal walls of the housing 80, that is to say that this seat 105 is limited to one face, preferably flat (or curved), of the internal walls of the housing 80, and does not does not go all the way around a section of the housing 80 which would be made in a plane perpendicular to the direction of elongation of the part of the housing 80 enclosing the valve 28.

In one embodiment of a method of manufacturing the device 100, the dispensing valve 28 is mounted in the dispensing housing 80 by inserting the dispensing valve 28 into the upper head 10i at the junction between the upper head 10i and lower IO2 before the upper 10i and lower IO2 head are assembled together.

The device 100, in particular the upper part 10i of the dispensing head 10, comprises the outlet 24.

The outlet 24 opens onto the outside of the device 100.

The outlet 24 is located at the end of the dispensing head 10, in particular in the upper part 10i of the dispensing head 10. The outlet 24 is positioned on the left side of the dispensing head 10 relative to the axis A . The contact surface 26 surrounds or borders the outlet 24.

The outlet 24 is arranged to distribute the fluid in a direction substantially perpendicular to the bearing surface 26.

The outlet 24 is arranged to distribute fluid in a direction substantially perpendicular and in a direction opposite to the external force 18 exerted on the contact surface 26 at the level of the distribution head 10.

In FIGURES 1 to 4, the bag 2 is fixed to the reservoir 6. To fix the bag 2 to the reservoir 6, the device 100 further comprises means 32 for screwing the bag 2 to the barrel 55 so as to fix the reservoir 6.

The means for screwing 32 include a screw thread 32.

The pocket 2 comprises a tip 34 arranged to sink (i.e. fit into) the reservoir 6. The tip 34 is rigid and preferably in PP or PE and is preferably at least 8 mm long. The supply port 8 is positioned at the end of the nozzle 34.

In a variant of the device 100, the end piece 34 is pressed into the reservoir 6 so as to fix the bag 2 to the reservoir 6.

On the device 100, the reservoir 6 comprises a cover 36 arranged to block the circulation of fluid contained in the reservoir 6 towards the bag 2 as long as the end piece 34 of the bag 2 is not pressed into the reservoir 6. Thus, before positioning the bag 2 above the reservoir 6, the reservoir 6 is airtight because the cover 36 has not yet been pierced.

The end piece 34 is arranged to pierce the cover 36. Thus, to fix the bag 2 to the reservoir 6, it is necessary to push the end piece 34 into the reservoir 6 and then screw the means 32 for screwing the bag 2 to the barrel 55 for fixing the reservoir 6. During the step of screwing the means 32 to the barrel 55, a finger 75 placed in the bottom of the barrel 55 presses the bottom of the reservoir 6 in order to facilitate the priming of the device. In another embodiment, the reservoir 6 can comprise a rigid cylindrical container in which a piston slides, the finger 75 is then arranged to push the said piston by passing through an orifice arranged in the bottom of the rigid cylindrical reservoir.

The device 100 comprises a supply valve 38 positioned at the level of the supply port 8, more precisely inside the nozzle 34 in a supply seat 62, and which, in an open state, allows the passage of the fluid contained in the reservoir 6 towards the bag 2, and which, in a closed state, does not allow it.

In FIGURES 1 to 3, the reservoir 6 is arranged to reduce its internal volume after each state of opening of the supply valve 38. In FIGURES 1 to 4, the part of the reservoir 6 further comprises the valve of. supply 38 housed at the level of the supply seat 62, said valve 38 being located at the junction between the internal volume of the pocket 2 and an internal volume of the reservoir 6.

The supply valve 38 of device 100 is shown in FIGURE 6.

The supply valve 38 has two parts. An upper part, formed by a cylinder and a lower part. The lower part of the supply valve 38 comprises a pusher or a membrane 38i. The supply valve 38 is typically made of TPO.

The supply valve 38 is located inside the pocket 2 and is designed for:

- in its closed state, press against the supply port 8, and

- in its open state, move away from the supply port 8.

At rest, that is to say without the device 100 being subjected to any stress or external force 18, the supply valve 38 is in its closed state.

The supply valve 38 comprises a second anti-drip device situated with the valve 38 and the supply seat 62, inside the nozzle 34. This second anti-drip device is designed to limit the quantity of product. remaining in the supply orifice 8. The second anti-drip device can be merged with the supply valve 38. The supply valve 38 is designed to be closed if a force is applied to the bag 2.

Preferably, even if this is less essential, at rest, that is to say without the device 100 being subjected to any stress or external force 18, the valve 38 is also in its closed state.

When the bag 2 is filled with fluid to be dispensed and the volume of the bag 2 decreases (for example due to an increase and / or an application of the external force 18 on the contact surface 26):

- the distribution valve 28 (more exactly the membrane 284) moves away from the distribution seat 105 and the distribution valve 28 is in its state open; fluid comes out through outlet 24 and bag 2 empties at least partially,

- The supply valve 38 is pressed against the internal wall of the end piece 34 of the pocket 2 (in particular the valve 38i of the valve 38) and blocks the passage of fluid from the supply orifice 8. The valve power supply 38 is in its closed state; fluid cannot (or hardly ever) escape from bag 2 to reservoir 6.

When the bag 2 is filled with the fluid to be dispensed and the volume of the bag 2 increases (for example by releasing the external force 18 on the contact surface 26):

the distribution valve 28 (more precisely the membrane 284) is pressed against the distribution seat 105 and the valve 28 is in its closed state; fluid cannot pass from bag 2 to outlet 24,

- The supply valve 38 is "sucked" and the flap 38i of the valve 38 moves away from the internal walls of the end piece 34 of the pocket 2 giving onto the supply port 8. The valve 38 is in its position. open state; fluid can pass from the reservoir 6 (passing through the supply port 8) to the bag 2 so as to refill the bag 2.

The reservoir 6 is equipped with a part 64 comprising a sealing skirt 60 provided with the cap 36, said sealing skirt 60 being located at the junction of the end piece 34 of the pocket 2 and the upper casing of the reservoir. 6.

The part 64 of the reservoir 6 is integral with the inner shell of the reservoir 6. The part 64 of the reservoir 6 is in particular located in the upper part of the reservoir 6, that is to say in a housing of the reservoir 6 located at the bottom. junction between the reservoir 6 and the end piece 34 of the bag 2.

The feed orifice 8 is located at the end of the nozzle 34, that is to say at the junction between the reservoir 6 and the bag 2.

FIGURE 5 illustrates the sealing skirt 60 including the cap 36.

The sealing skirt 60 is typically made of PP and the cap 36 of PP. The cap 36 is made of the same material as the sealing skirt 60. There is continuity of material between the sealing skirt 60 and the cap 36. Thus, the sealing skirt 60 and the cap 36 form one piece. The reservoir 6 is preferably made of polyolefin and is produced by blowing. FIGURES 1 and 2 typically show two configurations of device 100 arranged to dispense a fluid.

The fluid comprises a liquid and / or a gas, and is preferably a liquid, a cream, a paste, a gel or a mixture thereof.

The plane of the junction between the upper head 10i and lower IO2 and the plane in which the dispensing orifice 22 is located are parallel.

In FIGURES 1 to 3, the distribution head 10 extends mainly longitudinally along the axis A.

Unless stated otherwise, throughout this description, the A axis will be defined by default as the A axis in the stable position 12.

This axis A passes through the barycenter of the distribution orifice 22 and the central axis of the distribution channel 20.

The central axis of the distribution channel 20 passes through the barycenter of the junction between the upper head 10i and lower IO2.

In FIGURE 1, no external force is applied at the level of the contact surface 26. The dispensing head 10 is therefore in a stable position 12. Thus, the device 100 is said to be in a stable position 12 when the plane containing it stops. 66 of the pocket 2 and the plane containing the dispensing orifice 22 are parallel. In this case, the axis A intersects perpendicularly the stop 66 of the pocket 2, in particular at its barycenter.

In FIGURE 2, the external force 18 is exerted at the level of the contact surface 26. The dispensing head 10 is therefore in an inclined position 14. The plane containing the stop 66 of the pocket 2 and the plane containing the orifice of distribution 22 are no longer parallel. The axis A passes through the barycenter of the stop 66 but does not intersect it perpendicularly.

The dispensing head 10 tilts according to the angle of inclination 16. The angle of inclination 16 is defined, in FIGURE 2, by the angle between (for example at the level of the intersection on the ridge 66 ) from:

- the axis A or the longitudinal direction of the head 10 in the stable position 12 of the dispensing head 10, with

- the axis A or the longitudinal direction of the head 10 in the tilting position 14 of the dispensing head 10, that is to say typically when the dispensing orifice 22 is no longer parallel to the stop 66 from pocket 2. This angle 16 is the same between:

- the direction connecting the dispensing orifice 22 to the outlet 24 and / or to the surface 26 in the stable position 12 of the dispensing head 10, and

- the direction connecting the dispensing orifice 22 to the outlet 24 and / or to the surface 26 in the tilting position 14 of the dispensing head 10.

In FIGURE 2, the dispensing head 10 is typically tilted in a tilt position 14 of 25 degrees (25 °). However, the dispensing head 10 can tilt in other tilting positions 14. In the case considered, the dispensing head 10 tilts on the right side with respect to the axis A of the dispensing head 10. .

In fact, the dispensing head 10, outside of its stable position 12 and according to various possible inclined positions 14, is arranged to reach a position of maximum inclination when the angle of inclination 16 is inclined by at least 20 °, preferably 30 degrees, or even at least 45 degrees, relative to said stable position 12, said position of maximum inclination being designed to reduce the internal volume of the pocket 2, typically by at least 20%. Thus, the dispensing head 10 cannot tilt beyond the maximum tilt position, even if the external force 18 is greater than the threshold force. If the device 100 is in its maximum tilt position and an external force 18 greater than the threshold force is applied at the contact surface 26, then such external force 18 could damage the device 100.

FIGURES 7 to 12 illustrate another embodiment of a device 700 for dispensing a fluid. The device 700 comprises all the elements of the device 100. Thus, only the differences with the device 100 will be described. In this part, we consider that the axis A is defined by the axis on which the dispensing head 10 is centered.

The dispensing valve 28 of the device 700 comprises all the elements of the dispensing valve 28 of the device 100 except the part 28i, tapered end 28i, of the dispensing valve 28 of the device 100.

In the device 700, the deformable wall 4 of the pocket 2 comprises a bellows 44. The bellows 44 is a bellows 44 comprising a ply. In an alternative embodiment, the device 700 can include at least one fold.

The bellows 44 is cylindrical in shape and is centered, when the device 700 is in a stable position 12, on an axis collinear with the axis A. In this case, the bellows 44 therefore comprises on its outer wall corrugations propagating in a manner parallel to the axis A, that is to say parallel to the direction of elongation of the dispensing head 10.

In FIGURE 7, the device 700 is in a stable position 12.

The two parts 4i and 42 of the deformable wall 4 are identical. The device 700 can therefore tilt according to different tilting positions 14 on both sides of the axis of elongation of the dispensing head 10 or even in all the directions of tilting of the dispensing head 10 around the axis A.

The bellows 44 is also arranged to be compressed when an external force 18, comprising at least one component parallel to the axis of the cylinder of the bellows 44 and oriented in the direction of the reservoir 6, is applied at the level of the dispensing head 10. .

Bellows 44 is made of TPO

The device 700 comprises locking means 50 arranged to limit and / or prevent stretching of one of the sides of the bellows 44 during any inclined position of the dispensing head 10. In fact, the bellows 44 of the pocket 2 is included in a rigid housing 50 serving as a locking means 50. Thus, when the bellows 44 tilts to the left side in Figure 8, the portion 42 of the deformable wall of the bellows 44 collapses and folds over it. even while the part 4i stretches slightly and will come into abutment against the rigid housing 50. The extension of the part 4i of the deformable wall 4 is therefore blocked by the rigid housing 50.

The locking means 50 are also arranged to limit and / or prevent stretching of the bellows 44 when the bellows 44 is subjected to any stretching force.

Thus, the distance separating the two ends of the part 4i of the deformable wall 4, in the inclined position 14, is equal or only very slightly greater than the distance separating the two ends of the part 4i of the deformable wall 4 from the position stable 12. The distance separating the two ends of the part 42 of the deformable wall 4, in the inclined position 14, is less than the distance separating the two ends of the part 42 of the deformable wall 4 from the stable position 12.

The distance separating the two ends of the part 4i of the deformable wall 4, in the inclined position, is greater than or equal to the distance separating the two ends of the part 42 of the deformable wall 4 from the inclined position 14.

In the case where the bellows 44 is compressed, then the distance separating the two ends of the parts 4i and 42 of the deformable wall 4 are less than the distance separating the two ends of the parts 4i and 42 of the deformable wall 4 when no force is exerted on the distribution head 10.

In FIGURE 8, the dispensing head 10 is tilted to the left side of the axis of elongation of the dispensing head 10.

There is therefore an asymmetry between the two parts 4i and 42 of the deformable wall 4 of the bellows 44 in position 14.

The pocket 2 of the device 700 comprises two nozzles 34i and 342 positioned at the two ends, upper and lower, of the pocket 2.

The upper end of the pocket 2 comprises a retaining surface 68.

The tips 34i and 342 are cylindrical in shape.

The pocket 2 or the module 46 comprises means 32 for screwing the pocket 2 to the dispensing head 10. The module 46 can fit or screw into the pocket 2.

The means 32 for screwing include a screw thread 32.

The tip 34i is positioned on the upper end of the pocket 2, that is to say on the holding surface 68, and is arranged to be screwed inside the distribution channel 20 in the distribution head. 10.

The thread 32 is positioned on the outer wall of the end piece 34i. Thus, the nozzle 34i to the distribution head 10 is screwed inside the distribution head 10.

The tip 342 is positioned on the lower end of the pocket 2, that is to say on a surface of the pocket 2 opposite to the holding surface 68. The tip 342 is arranged to fit into and / or be integral with the tank 6.

When the device 700 is not subjected to an external force 18, for example in FIGURE 7, the holding surface 68 is a planar surface. The device 700 is arranged so that the upper end of the pocket 2, in particular the retaining surface 68, deforms as little as possible to maximize the reduction in volume of the pocket 2. This may take place:

a retaining surface 68 sufficiently rigid so that its deformation, caused by the inclination of the pocket 2, at the level of the attachment of the end piece 34i, only include deformation heights less than or equal to 2 or 3 mm with respect to to the flat surface of the support surface 68 (either when no force is applied at the contact surface 26), and / or

- Consolidation of the upper end of the pocket 68 (with the walls of the end piece 34i). Said consolidation can typically be produced at the level of a plate 52 (or pusher 52) integral with the dispensing head 10 and preferably being fixed by interlocking the pocket 2 on the end piece 34i at the level of the plate 52 (or pusher 52 ) of the distribution head 10, and / or

the end piece 34i which comprises an outside diameter almost as large as the diameter of the bellows 44, for example being at least two thirds of the diameter of the bellows 44.

The dispensing head 10 is a single piece which is broken down into:

- a middle part (preferably cylindrical), centered on the axis A, and in which the distribution channel 20 is arranged in its center,

- an applicator, carried by the median part, and comprising at least one curved shape (ie a curve) comprising the contact surface 26 and / or the outlet 24. For the device 700, the curved shape is a sphere and extends over the entire surface of the applicator;

- a part, in the form of a plate 52, carrying the middle part and positioned at the end of the dispensing head 10, that is to say the end of the dispensing head 10 facing the holding surface 68 of pocket 2.

The part in the form of a plate 52 and opening onto the holding surface 68 comprises the pusher 52.

The distribution channel 20 passes through all the parts of the distribution head 10 and is centered on the central axis of the distribution head 10, or on the axis A. The applicator, that is to say the spherically shaped part of the dispensing head 10, is located at the upper end of the dispensing head 10 and thus comprises the outlet 24 through which the fluid of the device 700 s 'escapes.

The outlet 24 of the device 700 is arranged to distribute fluid in the direction of elongation of the distribution head 10.

The contact surface 26 of the dispensing head 10, precisely of the applicator, extends over the entire perimeter of the curved shape of the applicator and therefore over the entire spherical part of the dispensing head 10. In this way. , the device 700 comprises an extended contact surface 26 which makes it possible to exert an external force 18 at a multitude of positions located on the applicator of the dispensing head 10. The device 700 can therefore be adapted to different shapes of application of external force 18.

In the case of FIGURE 7, no external force 18 is applied to the contact surface 26.

The longitudinal direction of the dispensing head is defined by the axis A, i.e. the axis on which the median part of the dispensing head 10 is centered.

The distribution head 10 and the reservoir 6 are aligned axially in the longitudinal direction when the head 10 is in its stable position 12, that is to say that there is a co-axiality of the distribution head 10 with the tank 6.

The dispensing head 10 and the pocket 2 are also aligned axially in the longitudinal direction when the head 10 is in its stable position 12, that is to say that there is a co-axiality of the dispensing head 10. with pocket 2.

The dispensing head 10 is arranged to tilt on the opposite side on which the external force 18 is exerted at the level of the contact surface 26.

The arrangement of the device 700, i.e. the use of the bellows 44 and of a spherical contact surface 26 causes the dispensing head 10 and the bag 2 to follow the same tilting movement when the external force 18 is applied to the device 700 at the contact surface 26.

In FIGURE 8, an external force 18 is exerted on the right side of the contact surface 26. The dispensing head 10 and the pocket 2 are inclined to the left side of the elongation axis of the dispensing head 10, c 'that is to say on the left side of axis A.

The distribution head 10 is equipped with the pusher 52 designed for: - press against the retaining surface 68 of the pocket 2, preferably a retaining surface 68 of the bellows 44, and

- Keep said retaining surface 68 fixed relative to the dispensing head 10.

In the case of FIGURE 8, when the dispensing head 10 is tilted, the locking means 50 press on the pusher 52 and the pusher 52 itself bears on the retaining surface 68 of the pocket 2. In FIGURES 7 and 8, the retaining surface 68 and the pusher 52 are held assembled by clamping the locking means 50 on a housing 70 containing the reservoir 6.

The housing 70 can be made of metal and / or of polymer.

The locking means 50, that is to say the rigid housing 50, are arranged to limit and / or prevent stretching of one of the sides of the pocket 2, and thus limit the inclination of the dispensing head 10. .

The locking means 50 is cylindrical in shape.

The means 50 comprises an orifice for inserting the head 10.

The distribution head 10 is arranged in the orifice of the blocking means 50. Thus the orifice of the blocking means 50 surrounds the middle part of the distribution head 10. The orifice of the blocking means 50 therefore comprises an internal diameter larger than the middle part of the dispensing head 10 so as to allow the tilt of the dispensing head 10 while limiting it.

Thus, the internal and / or external diameter of the locking means 50 can be chosen so as to define the maximum angle of inclination.

The locking means 50 comprise, on an outer wall, means for screwing 102 the locking means 50 to the rigid housing 70 comprising the reservoir 6. The rigid housing 70 is designed to contain the entire volume of the reservoir 6.

Tank 6 is fitted with a part comprising:

- the supply valve 38 housed at a supply seat, said valve 38 being located at the junction between the internal volume of the pocket 2 and an internal volume of the reservoir 6, and

- a stopper 40 provided with a cover 42, said stopper 40 being located at the junction between the internal volume of the pocket 2 and the distribution channel 20, and arranged to fit into the end piece 34i (in the internal part 34i) and a connecting element 46 connecting the supply valve 38 and the stopper 40, said connecting element 46 being arranged to deform during a deformation of the bag 2.

The part of the reservoir 6 comprising the cap 40 further comprises the supply valve 38 housed at the level of the supply seat 62, said valve 38 being located at the junction between the interior volume of the pocket 2 and an interior volume of the reservoir. 6

The stopper 40 further comprises insertion means arranged to push the supply valve 38 into the end piece 342, more precisely in the inner part of the end piece 342 of the pocket 2.

These insertion means are connected to the supply valve so as to insert it into the pocket forming an element provided, preferably at the end opposite to the supply valve, with means for taking it and fixing it more. precisely by fitting into the pocket on the side of the upper 34i and / or lower 342 end piece

The supply valve is housed at the lower nozzle.

The cap lid is housed in the upper end.

The connecting element connects the supply valve to the insertion means.

In the case of FIGURES 7, 8 and 9, the supply valve 38, the stopper 40 provided with the cap 42 and the connecting element 46 form a single and unique connecting piece 701.

Thus, as regards the tips 34i and 342 of pocket 2:

- The end piece 34i of the pocket 2 comprises an internal diameter, hollow (and of cylindrical shape), arranged so as to receive the stopper 40 of the connecting piece 701, and

- the tip 342 of the pocket 2 comprises an internal diameter, hollow (and cylindrical in shape), arranged to accommodate the valve

supply 38 of the connecting piece 701 (and so as to fit on the upper end of the tank 6)

In the case of FIGURES 7 and 8, the connecting element 46 is flexible and is located in the interior volume of the pocket 2.

The device 700 further comprises a perforator 48, located in the dispensing head 10, and arranged to perforate the cap 42 of the stopper 40 housed in the dispensing seat when the device 700 is being assembled. perforator 48 thus comprises an end provided with an acute angle, oriented towards the cover 42 of the stopper 40 and designed to pierce the cover 48 of the stopper 40.

In the case of FIGURES 7 to 9, the connecting element 46 of the connecting piece 701 is flexible or breakable after mounting the bag 2 on the reservoir 6.

In the considered case of the device 700, the connecting element 46 is flexible. In this way, with each inclination of the dispensing head 10, the connecting element 46 follows the movement of the bag 2 and does not break. The pocket 2 is no longer aligned with the central axis of the reservoir 6 and the axis A. It is noted that the pocket 2 can tilt relative to a stable position 12 but also compress along the axis A even in the stable position 12, including for the device 100. The device is arranged to dispense product by tilting the dispensing head 10 relative to a stable position 12, but it is also arranged to dispense product by compressing the dispensing head. distribution 10 along axis A.

The reservoir 6 of the device 700 is formed from a single piece.

The reservoir 6 and the pocket 2 of the device 700 are formed from a single piece.

The reservoir 6 of the device 700 comprises a bellows 6i of the reservoir 6. Thus, the reservoir 6 of the device 700 comprises an outer wall comprising two parts:

- a first part 6i comprising the bellows 6i of the reservoir 6,

- a second part 62 positioned below the bellows 61 of the reservoir

6.

The bellows 61 of the reservoir 6 (preferably cylindrical) is centered on the axis A when the head is in the stable position 12 (FIGURE 7). The bellows 61 of the reservoir 6 therefore comprises on its outer wall parallel corrugations 61 succeeding each other parallel to the axis A, that is to say parallel to the direction of elongation of the dispensing head 10 when the dispensing head 10 is in a stable position.

The reservoir 6, more precisely the bellows 61 of the reservoir 6, is arranged to compress in a direction parallel to the axis A and in a direction starting from the reservoir 6 towards the pocket 2.

The reservoir 6, more precisely the part 62 of the reservoir 6, is arranged to compress towards the inside of the reservoir 6, preferably in a direction orthogonal to the axis A and in a direction 90 starting from the outer wall of the reservoir 6. towards the axis of the tank 6, i.e. the axis A. For this, the reservoir 6 comprises on its outer wall grooves 92 or stiffnesses 92, in particular on the part 62 of the reservoir 6, arranged to approach towards the inside of the reservoir 6. Thus the grooves 92 are arranged to compress the reservoir 6 in the direction orthogonal to the axis A and in the direction 90, with each decrease in the volume of fluid contained in the reservoir 6.

The grooves 92 of the reservoir are located below the bellows 61 of the reservoir 6 more precisely in the part 62 of the reservoir 6.

The reservoir 6, more precisely the part 62 of the reservoir 6, is designed to be compressed by entering inside the reservoir 6 (more exactly inside the bellows 61), preferably in a direction parallel to the axis A as shown in figure 11.

In FIGURES 11 and 10, the device 700 is in a stable position 12. These figures do not illustrate the locking means 50, the housing 70 of the reservoir 6 and the dispensing head 10.

The pocket 2 and the reservoir 6 of the device 700 are integral with one another so as to form a single piece. Said part is preferably obtained by blowing or 3D printing.

More precisely, FIGURES 10 and 11 illustrate the device 700 comprising the bag 2 and the reservoir 6 blown after a complete use or not of the device 700.

Indeed, in FIGURE 10, we see that:

- The upper part 61 (ie the bellows 61 of the reservoir 6), comprising corrugations parallel to the central axis of the device 1000, is compressed. In Figure 10, the spacing between the corrugations of the reservoir 6 has decreased compared to FIGURES 7, 8 and 9. Thus, the length of the bellows 61 of the reservoir 6 in FIGURE 10 is less than the length of the bellows 61 of the reservoir 6 of the FIGURES 7, 8 and 9. The bellows 61 of the reservoir 6 is therefore compressed.

- the lower part 62 comprises a smooth wall but structured by stiffeners 92, also called grooves 92, arranged so that this part 62 of the reservoir 6 deforms radially in order to avoid folds, for example pinching at the wall of the tank 6. The shape of the longitudinal "embossing" stiffeners 92 is illustrated by the cross section of portion 62 of tank 6 in FIGURE 12. Thus, FIGURE 10 illustrates, after several distributions of fluid, a reduced form of the reservoir 6. The use of the device 700 is not complete, that is to say that there is still fluid contained in the bag 2. and the reservoir 6 of the device 700.

In FIGURE 11, the use of the device 700 is complete, that is to say that there is no longer any fluid contained in the reservoir 6, device 700. A certain quantity may remain in the pocket 2.

In Figure 11, the spacing between the corrugations of the reservoir 6 is the same as the spacing of the corrugations of the reservoir 6 of FIGURE 10. However, the part 62 of the reservoir 6 has compressed in the direction of the axis A.

In the case of the device 700, if the reservoir 6, in particular the part 61 of the reservoir 6 comprises an outer diameter greater than the outer diameter of the part 62 of the reservoir 6, then the part 62 is arranged to fit inside the reservoir 6. .

Thus, after each tilt of the dispensing head 10, the internal volume of the reservoir 6 decreases, preferably compresses, so that the lower part 62 of the reservoir 6 approaches the upper part 61 of the reservoir 6 and / or is compressed. radially on part 62.

In fact, in FIGURE 11, the lower part 62 of the reservoir 6 is compressed and is folded inside the upper part 61 of the reservoir 6, in order to optimize emptying of the fluid contained in the reservoir 6.

FIGURES 13-16 illustrate another embodiment of a device 1300 for dispensing fluid. Only the differences with the device 700 will be described.

The dispensing valve 28 of the device 1300 is identical to the dispensing valve of the device 700.

Device 1300 includes:

- the reservoir 6 positioned in the rigid case 70,

- the pocket 2 carried by the reservoir 6,

- the dispensing head 10 carried by the pocket 2,

- a cover 94 being in the case of FIGURES 13 to 16, a rigid cover 94 positioned above the pocket 2, - a dispensing button 72 forming part of the dispensing head 10,

- a plug 74 covering the dispensing button 72, the cover 94, the dispensing head 10, the bag 2 and the reservoir 6.

The stopper 74 is arranged to fit onto the rigid case 70 when the device 1300 is no longer used for dispensing fluid. The entire interior volume of the tank 6 is included in the rigid case 70.

The rigid case 70 includes an inner wall 70i.

The rigid case 70 can be made of metal and / or of glass, and / or of wood.

The device 1300 (more exactly the head 10) includes a maximum tilt position.

The device 1300 comprises the cover 94 arranged to limit and / or prevent the inclination of the dispensing head 10 beyond the position of maximum inclination. Thus the cover 94 blocks the inclination of the dispensing head 10 when the dispensing head has reached its position of maximum tilt.

The cover 94 comprises means for screwing 104 the cover 94 to the rigid case 70, thus making it possible to keep the dispensing head 10, the bag 2 and the reservoir fixed to the rigid case 70.

The cover 94 comprises, as for the device 700, an orifice and positioned on the central axis of the cover 94, said axis being collinear with the axis A. The orifice of the cover 94 is arranged to pass the dispensing head 10. through the inside of the hole in the cover 94. The diameter of the hole in the cover 94 is therefore larger than the diameter of the dispensing head 10. The maximum tilt position of the dispensing head 10 is given by the diameter of the cover hole. In a variant of the device 1300, the diameter of the orifice of the cover 94 is arranged so as not to block the inclination of the dispensing head 10.

The dispensing button 72, 10i of the head 10 comprises an outer wall and an inner one.

The distribution head 10, on its outer wall, comprises means 106 for screwing the part IO2 of the distribution head 10 comprising the channel 20 to the distribution button 72, typically to the internal wall of the distribution button 72.

The dispensing button 72 further comprises an orifice 73 positioned on the upper wall of the dispensing button 72 and passing through the outer and inner wall of the dispensing button 72. The orifice 73 is arranged so as to be centered on the outlet 24 of the dispensing head 10 when the device 1300 is mounted, that is to say when the dispensing button 72, the cover 94 the dispensing head 10, the bag 2, the reservoir 6 and the rigid housing 70 are assembled together. Thus, when the IO2 part is attached to the dispensing button 72, fluid can escape through the outlet 24 passing through the orifice 73 of the dispensing button 72 of the head 10.

As the dispensing button 72 is fixed by the means for screwing 106, the outer wall of the dispensing button 72 of the head comprises the contact surface 26.

The distribution button 72, being fixed to the part IO2, it follows the positions, that is to say the stable position 12 and / or the inclined positions 14, of the assembly of the distribution head 10.

The reservoir 6 comprises a cap 96 arranged to at least partially delimit the reservoir 6. The cap 96 comprises two parts:

- a platform 98, and

- a trunk 76 housed in the reservoir 6 and carrying the platform 98 of the cap 96.

The platform 98 and the trunk 76 are integral.

The trunk 76 is cylindrical and is centered on the central axis of the distribution channel 20, said central axis being collinear with the axis A. Thus, the trunk 76 and the distribution channel 20 are coaxial in position 12. The trunk 76 is also centered on the central axis of the deformable casing 56 of the reservoir 6.

The platform 98 of the cap 96 comprises a flat rigid wall and having at its ends two wedge edges 98i oriented towards the interior of the reservoir 6.

The reservoir 6 comprises the deformable envelope 56 delimiting at least in part the internal volume of the reservoir 6, said deformable envelope 56 comprising successive corrugations 562 radially around the axis A.

The deformable casing 56 of the reservoir 6 thus comprises three parts:

- an upper part 56i comprising edges, preferably smooth, and running along the inner wall 70i of the rigid housing 70,

- a lower part 562 comprising the radially successive corrugations 562,

a lower part 563 carrying the corrugations 562 and comprising a filling orifice 82. The lower part 563 is a rigid wall, that is to say more rigid than the lower part 562 comprising the corrugations 562.

The filling orifice 82 comprises a central axis centered on the central axis of the reservoir 6 (ie on the axis A). Thus, the filling orifice 82 and the reservoir 6 are coaxial and the filling orifice 82 and the trunk 76 of the cap 96 of the reservoir 6 are coaxial.

The filling port 82 is circular in shape and has a diameter equivalent to the outer diameter of the trunk 76.

The filling orifice 82 is arranged to fit together and / or embed the trunk 76 of the cap 96 of the reservoir 6 during the assembly of the device 1300, more precisely during the assembly of the reservoir 6. In this way, the trunk 76 is arranged to trap a air bubble (not shown) during assembly of the trunk 76 in the filling orifice 82 after filling the reservoir 6 with the fluid, said air bubble being trapped in the trunk 76. This prevents this bubble from rising again. air in tank 6 then bag 2.

Part 563 of reservoir 6, comprising the filling orifice 82, comprises hermetic closure means 82i. The hermetic closure means 82i comprises a sealing skirt 82i.

The filling orifice 82 is arranged to be closed by the cap 96 of the reservoir 6, in particular by the trunk 76. The part 563 of the deformable casing 56 of the reservoir 6 is arranged to be separated from the cover 94, in particular from the trunk 76. , for example, with suction cups during a filling phase of the device 1300.

The deformable wall 56 of the tank is fixed or welded to the cover 94 of the tank 6.

The wedge edges 98i of the platform 98 of the reservoir 6 are arranged to hold the deformable wall 56 of the reservoir 6. In particular, the wedge edges 98i of the platform 98 of the reservoir 6 press the upper end of the wall 56 against the wall. interior 70i of the rigid case 70.

The deformable envelope 56 is arranged to fold back towards the platform 98 at each decrease in volume of the deformable envelope 56.

The deformable envelope 56 is arranged to fold up around the trunk 76 at each decrease in volume of the deformable envelope 56. Indeed, in FIGURES 13 and 14, the device 1300 is completely filled. Thus, the reservoir 6, containing all the fluid available from the device 1300, therefore comprises its maximum internal volume. In this case, the successive undulations 562 of the deformable casing 56 of the reservoir 6 are radial with respect to the central axis of the trunk 76, ie around the axis A.

In FIGURE 15, almost all of the fluid contained in the deformable casing 56 of the reservoir 6 has been dispensed. The deformable envelope 56 is folded towards the platform 98. Thus, the corrugations 562 of the deformable envelope 56, initially radial around the axis of the trunk 76, have moved towards the trunk 76 and thus form corrugations 562. .

The smooth edges 56i of the deformable casing 56, initially pressed against the inner wall 70i of the rigid case 70 are arranged to approach the cap 96 of the reservoir 6, in particular of the platform 98, at each decrease in the volume of the fluid contained in the tank 6.

Such a configuration makes it possible to consume as much as possible the volume of fluid contained in the reservoir 6 and to optimize the return of fluid:

by increasing the area of the deformable wall 56 of the reservoir 6, in particular by the corrugations 562 of the deformable wall 56, and

- By arranging the deformable wall 56 so that it matches the rigid shapes of the tank as much as possible, in particular the cover 96, at each decrease in volume of the shell of the tank 6.

The device 1300 for dispensing a fluid comprises the bag 2 having an interior volume arranged to contain the fluid, the interior volume being delimited at least in part by the deformable wall 4.

The pocket 2 is formed by a bottom wall 21 and by the flexible deformable wall 4.

The walls 21 and 4 face each other.

The wall 4 forms a skirt, of concave shape, and has an upper part and a lower part.

The deformable wall 4 (more exactly its lower part) is fixed or welded to the bottom wall 21.

The bottom wall 21 preferably has the shape of a plane or substantially a plane.

The bottom wall 21 is a rigid wall, that is to say more rigid than the wall 4. The deformable wall 4 is for example a thin wall and the bottom wall 21 is for example a wall thicker than the wall 21.

The walls 21 and 4 are for example made of polypropylene (PP).

The bottom wall 21 is parallel to the platform 98. More precisely, the bottom wall 21 is fixed to the platform 98 of the cap 94. In a variant of device 1300, the bottom wall 21 and the platform 98 are one and the same. unique piece.

The feed orifice 8 is located at the level of the bottom wall 21 and pierces the bottom wall 21 and the platform 98 so as to connect the reservoir 6 to the bag 2.

The deformable wall 4 of the pocket 2 comprises areas of weakness 78 and / or joints 78 arranged to allow inclined but stable positions 14 of the dispensing head 10 in the absence of external force 18.

These areas of weakness 78 correspond to an area 78 where the deformable wall of the pocket 4 is thinner than on the other parts of the deformable wall 4.

When the dispensing head 10 is in the inclined position 14, the zone of weakness 78 of the deformable wall 4 is arranged to press against and / or approach the bottom wall 21 of the pocket 2, thus forming the inclined position 14 preferential (and stable) of the distribution head 10.

As long as no secondary external force is applied to the contact surface 26, the device 1300 remains and maintains this inclined but stable position 14 of the dispensing head 10. However, this secondary external force must be applied on the opposite side. to the side on which the external force 18 has been exerted in order to position the dispensing head 10 in its inclined position 14.

In all cases, the deformation force is more difficult at the start of the inclination to then arrive more easily or automatically at a preferential position in an angle precise to within 5 degrees, thus allowing a dosage. Indeed, in FIGURE 15, the external force 18, with respect to the central axis of the distribution channel 20, is applied on the right side of the distribution head 10. The distribution head 10 and the pocket 2 maintain a position tilted 14 but stable on the left. Thus, to return the device 1300 to its initial stable position, that is to say before the exercise of any external force 18 (i.e. when there is co-axiality between the dispensing head 10 and the tank 6), the secondary external force must be applied from the left side of the dispensing head 10, i.e. from the tilt position side 14.

In one embodiment of a method for mounting the device 1300, illustrated in FIGURE 16, the deformable wall 56 of the reservoir 6, in particular the part 563, is pulled outwards so as to release the filling orifice 82. The reservoir 6 is filled with fluid and it is closed with the cap 96 by pushing the deformable wall 56 of the reservoir 6 towards the interior of the reservoir 6, in particular the part 563 (movement opposite to the previous one). The reservoir 6 comprises the sealing skirt which makes it possible to seal the part 563, ie the bottom of the reservoir 6 mounted in the cap 96. The deformable wall 56 of the reservoir 6 comprises the skirt and is of the same material.

The skirt is more rigid than the part 562 of the deformable wall 56.

In the case of assembly of the device 1300 by blowing, the sealing skirt can be made with a more rigid material because the thicknesses of the deformable wall 56 can be reduced.

In the case of mounting the device 1300 by injection: one works with deformable wall thicknesses varying between 0.4 mm to 0.5 mm. In this case, a flexible material is used to design the reservoir, in particular the deformable wall 56. The sealing skirt is designed with a material more rigid than the material used for the deformable wall 56.

In a variant of the devices 100, 700, 1300, there may be two fluids contained in two separate reservoirs 6. The devices 100, 700, 1300 can have a preferential inclination for each of the fluids, and / or a third inclination arranged to mix the fluids. The third inclination can be, for example, a support force 18 parallel to the direction of elongation of the dispensing head 10, or collinear with the axis A. FIGURES 17-18 illustrate another embodiment of a device 1700 for dispensing fluid. Only the differences with the devices 100, 700 and 1300 will be described.

The device 1700 for distributing the fluid comprises:

- a pocket 2 comprising an inner pocket 2i and an outer pocket 22, said inner pocket 2i being located at least partially in the outer pocket 22, said inner and outer pockets 2i, 22 each having an inner volume arranged to contain the fluid, said inner volume of the outer pocket 22 being delimited at least in part by a movable wall 3, said movable wall 3 being arranged to, under the exertion of a bearing pressure 18, reduce the inner volume of the inner pocket 2i and the interior volume of the exterior pocket 22 by deforming and / or by moving,

- an outlet 24 arranged to distribute the fluid.

The interior volume of the interior pocket 2i is delimited at least in part by:

- a piston 5 integral with a junction wall 7 delimiting at least in part the internal volume of the external pocket 22,

a housing 9 of the piston 5 arranged to receive the piston 5 and guide it during an axial movement 11 of said piston 5 in the housing.

The device 1700 is arranged to guide the fluid according to a circuit comprising:

- a first route, passing:

o from the inside of the outer pocket 22 inside the inner pocket 2i and / or the piston 5, in the inner pocket 2i, via at least one connecting hole 13 connecting the inner volume of the outer pocket 22 to the inside of the inside pocket 2i and / or the piston 5, and

- a second path, passing from the inside of the interior pocket 2i and / or the piston 5 to the outlet 24.

The device 1700 also comprises a supply orifice 8 connecting a reservoir 6 to the interior volume of the exterior pocket 22. From FIGURE 17, the term volume of pocket 2 means the sum of the internal volume of the internal pocket 2i and the internal volume of the external pocket h.

The pocket 2 is delimited by the movable wall 3, the junction wall 7 and the bottom wall 21.

The device 1700 further comprises braking means 15 arranged to block an axial movement 11 of the piston 5 in the housing 9 reducing the internal volume of the internal pocket 2i and of the external pocket 22 when the movable wall 3 is subjected to a pressure. support 18 (previously called the external force 18) less than a threshold force. The device 1700 comprises “free” displacement means in which the internal volume of the pocket 2 decreases without overpressure constraint of the liquid during the closing of the connection orifice 13 (acting as an inlet valve). During this step the liquid is pumped into the reservoir 6 through the orifice 8 and the pocket 2 is deformed and the piston 5 rubs against the interior walls of the housing 9 and / or guide means 65 of the piston 5 in the housing 9, this step allows an acceleration / impulse of the bearing surface 26. Finally, the device 1700 comprises means for increasing the pressure: as soon as the connection orifice 13 is closed, the piston compresses the product in the internal pocket 2i. Preferably, the support force during the rise in pressure is less than the threshold force.

The piston 5 and the housing 9 are therefore arranged to allow three phases of movement of the piston 5 in the housing 9 during an exercise of the force 18:

1 a blocking phase for which the piston 5 does not move beyond the means 15 as long as the force 18 is less than the threshold force, then a crossing of the means 15 as soon as the force 18 is greater than this threshold force;

2 a free movement of the piston 5 in the housing 9 once the piston 5 has passed the means 15 (acceleration in space during the closing of the orifice 13, space between the piston and the housing), typically according to a translation of the piston 5 of at least 0.5 mm or even 1 mm in its housing 9, making it possible to give an impulse or acceleration to the threshold force (kinetic energy) and

3 a compression phase, comprising an increase in the pressure in the pocket 2i after closing the orifice 13 The most important are phases 2 and 3, phase 1 is optional and / or can be recovered by the return forces of deformation or displacement of the external pocket.

The axial movement 11 of the piston 5 is along the central axis of the piston 5.

The device 1700 comprises a bearing surface 26, also called a contact surface 26, arranged to, under the exertion of the bearing pressure 18 and through the dispensing head 10, reduce the internal volume of the interior 2i and exterior pocket 22 by deforming and moving the movable wall 3.

The bearing surface 26 is integral with the dispensing head 10, and preferably comprises at least part of the dispensing head 10.

Device 1700 includes output 24.

The outlet 24 opens onto the outside of the device 1700.

The outlet 24 is located on the distribution head 10.

The outlet 24 is arranged to distribute fluid in a direction substantially perpendicular to a direction of movement of the distribution head 10.

The dispensing head 10 is arranged to follow a translational movement.

The outlet 24 is arranged to distribute fluid in a direction substantially parallel to an axis of elongation of the distribution channel 20.

The device 1700 comprises a dispensing orifice 22 connecting the bag 2 to the dispensing channel 20.

The distribution valve 28 is inside the distribution channel 20 of the device 1700.

The distribution channel 20 of the device 1700 comprises an interior volume arranged only to include (or accommodate) the distribution valve 28. Thus only the distribution valve 28 is included in the distribution channel 20.

The device 1700 comprises the dispensing valve 28 located in the dispensing channel 20, and which, in an open state, allows fluid to pass from the inside of the inner bag 2i to the outlet 24, passing through the dispensing orifice. 22 and the distribution channel 20 (in particular via the housing 80), and, in a closed state, does not allow passage of fluid from the inside of the pocket interior 2i to the outlet 24 passing through the distribution orifice 22 and through the distribution channel 20 (specifically through the housing 80).

The distribution head 10 is integral with the bottom wall 21 by overmolding or bi-injection of the distribution head 10 on the bottom wall 21.

Thus, the distribution channel 20 comprises and / or formed by a wall of the distribution head 10 and an upper wall of the bottom wall 21.

The dispensing head 10 includes a spray 10.

The dispensing head 10 is located outside the pocket 2.

The dispensing head 10 is arranged to, by exerting pressure 18 on the bearing surface 26, move at least according to the translational movement. The translational movement of the dispensing head 10 is in the same direction but in the opposite direction to the axial movement 11 of the piston 5.

A portion of the dispensing head 10 is arranged, under the exertion of the bearing pressure 18, to slide at least in part along the outer wall of the outer pocket 22 so as to move and / or deform the movable wall 3 of the outer pocket 22.

The bearing surface 26 is designed to, under the exertion of pressure, reduce the internal volume of the internal 2i and external 22 pocket by deforming the movable wall 3, more exactly by crushing it towards the wall of junction 7.

The deformable mobile wall 3 has a shape memory. When this wall 3 is not subjected to any external stress, it resumes or remains in its form illustrated in FIGURE 17, which maximizes the volume of the interior 2i and exterior 22 pocket.

The bearing surface 26, accessible from the outside of the device 1700 by a hand of a user, has a minimum surface area of 10 mm ²

The housing 9 of the piston 5 is delimited at least in part by the bottom wall 21. A part of the bottom wall 21, that is to say the part of the bottom wall 21 in contact with the distribution channel 20 , is integral with the housing 9 of the piston 5.

The bottom wall 21 at least partially delimits the volume of the outer pocket 22.

The junction wall 7 at least partially defines the piston 5.

The bottom wall 21 at least partially defines the housing 9 of the piston 5. The distance between the wall 7 and the wall 21 defines the volume of the interior pocket 2i.

In the device 1700, the braking means 15 are integral with the housing 9 of the piston 5 and preferably comprise at least one inclined tongue 17 towards the inside of the housing 9.

The device 1700 includes a tab 17.

In the device 1700, the movable wall 3 is separated from the junction wall 7. The junction wall 7 is arranged to delimit the internal volume of the pocket 2 and the internal volume of the shell of the reservoir 6.

The junction wall 7 comprises a substantially planar shape. In the case of the device 1700, the junction wall 7 is rigid, that is to say more rigid than the deformable wall 3 of the pocket 2.

The movable wall 3 is located between the bottom wall 21 and the junction wall 7.

The junction wall 7 is of the same rigidity as the bottom wall 21.

The junction wall 7 is fixed to the movable wall 3 of the pocket 2.

The movable wall 3 is fixed to the bottom wall 21 of the pocket 2.

The deformable wall 3 is flexible.

The movable wall 3 is typically made of TPO.

The piston 5 is partially delimited by the junction wall 7.

The piston 5 is fixed to the junction wall 7 by welding and / or molding

The piston 5 is integral with the flat part of the junction wall 7.

The junction wall 7 is made of PP.

The piston 5 is made of the same material as the junction wall 7. On the device 1700, the piston 5 and the junction wall 7 form a single piece.

Thus the piston 5 is therefore positioned between the flat part of the junction wall 7 and the housing 9 for the piston 5.

The housing 9 for the piston 5 is positioned between the piston 5 and the distribution channel 20.

The piston 5 is hollow and cylindrical and comprises an outer diameter delimited by the junction wall 7.

The outside diameter of the piston 5 includes an increase in its diameter at the end of the piston 5 giving onto the housing 9 of the piston 5. This arrangement makes it possible to have a sealed linear annular contact during compression phases, that is to say when the dispensing head 10 is driven by the translational movement reducing the volume of the pocket 2. This makes it possible, among other things, to increase sealing performance of the device 1700. A low rotational movement (for example of the ball joint type) and optionally complementary to this translational movement.

The device 1700 further comprises a supply orifice 8 connecting the supply channel 78 and / or a reservoir 6 to the volume of the outer pocket 22.

The device 1700 comprises the reservoir 6. The reservoir 6 communicates with the exterior pocket 22 through the supply port 8. The reservoir 6 comprises an interior volume arranged to contain the fluid.

The device 1700 is arranged to guide the fluid along the second path, at each bearing pressure 18 on the movable wall 3 greater than the threshold force, and / or, at each decrease in the internal volume of the internal pocket 2i and of the outer pocket 22 for which the connection orifice 13 is closed, thus causing the movement of the piston 5 in the housing 9. The movement of the piston 5 in the housing 9 causes compression of the product present in the volume of the pocket 2.

The connection orifice 13 closes after a (sufficient) pressure on the movable wall 3, it thus forms the supply valve of the interior pocket 2i.

The device 1700 is arranged to guide the fluid along the first path:

after an end of each support pressure 18 greater than the threshold force, that is to say when the movable wall 3 is no longer under the exertion of a support pressure 18 greater than the threshold force, and or

- at each increase in the internal volume of the inner pocket 2i and of the outer pocket 22 for which the connection orifice 13 is open, that is to say when the piston 5, located in the housing 9, returns to and in the outside pocket 22.

The connection hole 13:

- is formed at a junction 19 between one end of the piston 5 and one end of the housing 9 of the piston 5, and / or

- includes a hole 23 located in the housing 9 of the piston 5.

The connection orifice 13 is designed for: - close when the piston 5 moves, reducing the internal volume of the pocket 2,

- open when the piston 5 moves, increasing the internal volume of the pocket 2.

Note that this embodiment comprises a cavity 139.

This cavity 139 corresponds to the internal volume of the piston 5.

This cavity 139 is not closed but the fluid contained in the reservoir 6 can circulate from the reservoir 6 to the cavity 139, and / or from the cavity 139 to the outlet 24.

However, a majority (over 50%) or even all of the volume of cavity 139 is dead volume, i.e. fluid can flow from reservoir 6 to outlet 24 without disturbing or creating movement of the fluid in the cavity 139.

It is further noted that the internal volume of the cavity 139 is greater than the maximum volume of fluid exiting through the outlet 24 when the piston 5 enters its housing 11.

FIGURES 19 to 22 illustrate another embodiment of a device 1900 for dispensing a fluid. Only the differences with the 1700 device will be described.

The device 1900 comprises the dispensing head 10 extending longitudinally over a certain length in a longitudinal direction connecting the dispensing orifice 22 to the outlet 24.

The distribution head 10 is substantially (at +/- 20 mm) in the extension of the reservoir (at the end of the reservoir) and the direction of distribution substantially opposite to the elongation of the reservoir at +/- 20 degrees. The device 1900 is designed to operate in all positions, in particular head up or down with respect to the terrestrial gravitational force.

The dispensing head 10 is a straight part extending longitudinally in the longitudinal direction.

The distribution head 10 comprises the distribution channel 20. The distribution channel is a cylinder extending longitudinally over the entire length of the distribution head 10 and in the same longitudinal direction as the distribution head 10. The dispensing head 10 is equipped with a collar 45. The collar 45 is arranged to fix the reservoir 6 in the bottom wall 21.

The axis of the distribution channel 20 is centered on the central axis of the distribution head 10, that is to say that the channel 20 and the head 10 are coaxial.

In FIGURES 19 and 22, the device 1900 comprises the reservoir 6 comprising a deformable envelope 56. The deformable envelope 56 of the reservoir 6 is arranged to delimit the pocket 2.

The device 1900 comprises a dispensing orifice 22 connecting the bag 2, in particular the inner bag 2i to the dispensing channel 20.

The braking means 15 are integral with the housing 9 and preferably comprise at least one tongue 17 inclined towards the outside of the piston 5.

The connection orifice 13 includes the hole 23 located in the housing 9 of the piston 5.

The connection orifice 13 is arranged for

- close when the piston 5 moves, reducing the internal volume of the pocket 2,

- open when the piston 5 moves, increasing the internal volume of the pocket 2.

The device 1900 further comprises the distribution channel 20 arranged to conduct the fluid coming from the inner bag 2i towards the outlet 24.

The device 1900 comprises the distribution valve 28 located in the distribution channel 20 and arranged to conduct the fluid from the inner bag 2i to the outlet 24.

The device 1900 also includes:

- the distribution valve 28,

a mixer 25 designed to receive different separate streams of fluid (coming from the bag 2) and mix them in the form of a spray at the outlet 24.

The flows can come from the same fluid and / or from different fluids.

One end or part (more exactly the part 283) of the dispensing valve 28 is integral with a rod 27 arranged to sink into the mixer 25 so as to form different channels 59 arranged to conduct the different separate flows of fluid. up to mixer 25. The distribution valve 28 comprises a stiffener 49 designed to prevent bending or (too great) deformation of the valve 28 during its insertion into the channel 20.

The rod 27 is an element used to produce a spray (i.e. vaporizer).

The mixer 25 comprises three cavities 57 arranged in the distribution channel 20 (housing 80 of valve 28) to converge towards the outlet 24. The outlet 24 is closed by a front face of the rod 27 (forming the cavities 57 of the connected mixer 25. to channels 59). These cavities 57 are supplied by the three channels 59 formed by the side walls of the rod 27 and the triangular hole of the distribution part 25, spaced from one another, and arranged to define the three channels 59. In variants, there are at least two cavities 57 and at least two channels 59. Blades are at the bottom of the part 25, in order to increase the pressure at the level of the outlet 24 and create a vortex. Thus, these channels 59 are directed towards the same central direction so as to create a vortex. A groove in the inner wall of the channel 20, which is an extension of the channels 59, imparts a rotational movement to the fluid circulating therein.

The channels 59, and the cavities 57 (located in the extension of the channels 59), are arranged to create an outlet vortex 24 comprising the flows coming from the pocket 2.

The movable wall 3 is a deformable wall.

The movable wall 3 comprises the junction wall 7. More precisely, there is continuity of material between the movable wall 3 and the junction wall 7. The movable wall 3 and the junction wall 7 are similar, that is to say - say made of the same material.

The walls 3 and 7 are for example made of polypropylene.

The movable wall 3 delimits at least in part the volume of the outer pocket 22. The movable wall 3 forms a dome, that is to say that the movable wall 3 comprises a portion of concave shape with respect to the bottom wall. 21

The inner pocket 2i comprises a part delimited by the bottom wall 21. The bottom wall 21 comprises the housing 9 for the piston 5. The housing 9 for the piston 5 is delimited at least in part by the bottom wall 21.

The outer pocket 22 comprises a part delimited by the bottom wall 21. The bottom wall 21 comprises the supply orifice 8 to connect the pocket 2 to the reservoir 6, more precisely the outer pocket 22 to the reservoir 6. The bottom wall 21 preferably comprises a shape of a plane or substantially a plane on which the movable wall 3 is fixed.

The movable wall 3 is fixed or welded to the bottom wall 21, in particular to a plane of the bottom wall 21.

The bottom wall 21 is a rigid wall, that is to say more rigid than the movable wall 3.

The movable wall 3 is for example a thin wall and the bottom wall 21 is for example a thicker wall than the movable wall 3.

The movable wall 3 is preferably made of PP with a polymer or plastomer additive (such as for example Vistamaxx ™ 6202), in order to reduce its hardness so that the hardness of the movable wall 3 is less than 80 Shore D Consequently, too great a fineness and weaknesses of the movable wall 3 are avoided.

The pocket 2, more precisely the bottom wall 21, defines at least one housing 39 arranged to receive means 31 for fixing the reservoir 6 to the pocket 2. Thus the reservoir 6 can fit into the bottom wall 21. The reservoir 6 is held by clamping by the dispensing part 10. In another embodiment, not shown, the dispensing part 10 comprises an external end piece onto which the reservoir 6 has just fitted at the level of a neck. This neck is constrained in traction by the end piece, optionally an outer ring can be crimped on the outside of the neck by displacement along the latter in order to improve the seal.

The pocket 2 also comprises a housing 41 in the pocket 2 arranged to mount and / or fit the dispensing head 10 to the pocket 2, more precisely to the bottom wall 21.

The device 1900 comprises the reservoir 6 communicating with the outer pocket 22 through the supply port 8, said reservoir 6 comprising an inner volume arranged to contain the fluid, said inner volume being delimited at least in part by the deformable envelope 56. .

The deformable shell 56 of the tank is made of TPO or PE or PP.

The deformable casing 56 comprises a bearing surface 26 arranged to, from the outside of the device 1900, receive the bearing pressure 18, external to the device 1900 and orthogonal to the longitudinal direction of the distribution channel 20. Thus, at each bearing pressure 18 greater than the threshold force, the piston 5 or part of the piston 5, initially included in the internal volume of the external pocket 22, will move in the housing 9 of the piston 5.

Thus, the reservoir 6 is designed to reduce its internal volume after each state of opening of the supply valve 38.

The reservoir 6, in particular the deformable wall 56 of the reservoir 6, comprises the means 31 for fixing the reservoir 6 to the pocket 2, specifically for fixing the reservoir 6 to the bottom wall 21, in particular to the bottom wall 21 comprising a part inside pocket 2i.

The means 31 for fixing the bag 2 to the reservoir 6 are integral with the reservoir 6, in particular with the deformable wall 56 and the retaining surface 33 of the reservoir. The means 31 are thicker than the rest of the deformable wall 56 of the reservoir 6.

These means 31 for fixing are a rigid part of the deformable wall 56, that is to say more rigid than the other parts of the deformable wall 56 of the reservoir 6..

The retaining surface 33 is flat and is a rigid part of the deformable wall 56, that is to say more rigid than the other parts of the deformable wall 56 of the reservoir 6.

The means 31 of the deformable wall 56 comprise at least one wedge edge 31 which fits into the interior pocket 2i. In the case of the device 1900, the deformable wall comprises two wedge edges 31 to fit the reservoir 6 into the pocket 2, specifically to fix the reservoir 6 to the bottom wall 21, in particular to the bottom wall 21 comprising the inner pocket. 2i.

Thus the flange 45 is arranged for, by exerting a mounting pressure (not shown) on the retaining surface 53 of the reservoir 6, fit and / or fix the edges 31 at the corner of the reservoir 6 in the pocket 2.

The device 1900 can be a mono-material refill, typically of the same family as the polyolefin compounds.

FIGURE 20 shows an exploded view of the device 1900 not

including no tank 6.

The outer pocket 22 comprises means for fixing the movable wall 3 to the bottom wall 21. The volumes of the outer pocket 22 and of the pocket interior 2i are delimited when the movable wall 3 is fixed to the bottom wall 21.

The movable wall 3 comprises at least one pin 35, four on the device 1900, to precisely position and fix the movable wall 3 to the bottom wall 21. The bottom wall comprises at least one hole 37, four in total of the

FIGURE 20, arranged to accommodate at least one pin 35 of the movable wall 3.

In one embodiment of a method of mounting the device 1900, the dispensing valve 28 is mounted in the dispensing head 10, in particular in the dispensing channel 20. The dispensing head 10 is then fitted into the housing 41 of the device. the pocket 2 (in particular in the bottom wall 21 comprising a part of the interior pocket 2i). The movable wall 3 is then assembled to the bottom wall 21 of the pocket 2 so as to form and / or define the inner and outer pocket 2i and 22. The movable wall 3 must be fixed to the bottom wall 21.

In the case of a method of a device 100 comprising a reservoir 6, the movable wall 3 must be fixed to the bottom wall 21. Thus, the reservoir 6 is clamped between the distribution head 10, at the level of the collar 45. , and pocket 2.

Note that along the axis of translation of piston 5 in housing 9, starting from wall 3:

- the housing 9 extends beyond the channel of the inner pocket 2i connecting the orifice 13 to the valve 28, and / or

- the valve 28 is not located along this axis.

Note that pocket 2i includes:

- a first part inside the pocket h, and

- a second part, forming an angle or bend in relation to the

first part, and located under the pocket 22.

Referring to Figure 21, the valve 28 can be held in the channel 10 by a rib 67.

The movable wall 3 has a technical function of spring or return means exerting a force bringing the piston 5 towards the outside of the housing 9.

In FIG. 19, it can be seen that the piston 5 is formed at least in part by at least part of the movable wall 3.

The piston 5 is in direct contact with the wall forming the bearing surface 26. In a variant not shown for which the casing 56 does not surround the pocket. 2 but just forms a reservoir outside the pocket 2, the piston 5 is formed at least in part by at least part of the bearing surface 26.

FIGURES 23 to 25 illustrate another embodiment of a device 2300 for dispensing a fluid. Only the differences with the 1900 device will be described.

The dispensing head 10 of the device 2300 does not include a collar 45 but retains the same shape and the same direction of elongation.

Thus, the dispensing head 10 is arranged to be nested, that is to say held fixed, in the housing 41 of the pocket 2.

The device 2300 further comprises a plug 74 arranged to be positioned and / or fit on the dispensing head 10. When the plug 74 is fixed to the dispensing head 10, no fluid can exit through the outlet 24 of the device. 2300. The stopper 74 is designed to be airtight when it is pressed to the outlet 24 for the priming phase during vacuum filling.

The cap 74 is made of plastic.

As in the device 1900, the movable wall 3 comprises the junction wall 7. There is continuity of material between the movable wall 3 and the junction wall 7.

However, the movable wall 3 is not made of the same material as the junction wall 7.

The movable wall 3 is made of PP, PE or TPO.

The junction wall 7 is made of PP, PE or TPO.

The junction wall 7 is rigid, that is to say more rigid than the mobile wall 3.

The movable wall 3 and the deformable wall 56 of the reservoir 6 are similar, that is to say made of the same material. There is continuity of material between the movable wall 3 and the deformable wall 56. They are formed by a single piece comprising two welding or fixing zones, a welding or fixing zone 431 for welding or fixing the wall 3 on the wall 21. and a weld or attachment area 432 for welding or fixing the wall 56 to the wall 21i.

Indeed, the device 2300 comprises a plate 43. The plate 43 is substantially planar. The plate 43 comprises the movable wall 3, the junction wall with the piston 5 and the deformable wall 56 of the reservoir 6. The plate 43 therefore comprises parts having different rigidities.

The plate 43 is arranged to be positioned on the bottom wall 21 of the pocket 2.

The plate 43 is arranged to be fixed to the bottom wall 21 of the pocket 2, more precisely on an upper face 21i of the bottom wall 21.

The upper face 21i of the bottom wall 21 is substantially planar.

The plate 43 is fitted and / or welded to the bottom wall 21 of the pocket

2.

The volume of the reservoir 6 is between the bottom wall 21 of the pocket 2 and the deformable casing 56.

The deformable envelope 56 of the reservoir 6 comprises successive radial corrugations 562 about an axis B.

The axis B is perpendicular to the plane 47 of the wall 43 and / or 56.

The deformable envelope 56 is substantially contained in a plane 47 around which the corrugations 562 oscillate, the axis B being substantially perpendicular to this plane 47. The plane 47 is substantially parallel to the upper face 21i of the bottom wall 21.

The axis B is substantially perpendicular to the direction of elongation of the dispensing head 10.

The corrugations 562 have an amplitude of oscillation, preferably constant.

The amplitude of oscillation of the corrugations 562 is between the plane 47 and the upper face 21i of the bottom wall 21 on which the plate 43 is fixed.

In one embodiment of a method for mounting the device 2300, the dispensing valve 28 is mounted in the dispensing head 10. The dispensing head 10 is then fitted into the housing 41 of the pocket 2 (in particular in the wall. bottom 21 comprising part of the inside pocket 2i). If the device 2300 is not used, the stopper 74 is positioned on one face of the dispensing head 10 comprising the outlet 24. The plate 43 is then assembled with the bottom wall 21 on its upper face 21i.

The plate 43 must be fixed to the back wall 21.

The method of mounting device 2300 is performed under vacuum and includes vacuum welding. The vacuum assembly process comprises the following successive steps:

- At least part of the reservoir 6, at least part of the pocket 2, is positioned on which the distribution valve 28, the distribution head 10 and the cap 74 are assembled,

- filling the future interior volume of tank 6 (and

preference of the future interior volume of the bag 2) with the fluid to be dispensed,

- the reservoir 6 (with the wall 56) and the pocket (with the wall 3) are closed,

- The device according to the invention is placed in a cavity 61,

- emptying the air in the cavity 61 to reach a pressure

less than 1 bar,

- an approach of the plate 43 towards the upper face 21i of the

bottom wall 21 of pocket 2, preferably by reducing the volume of cavity 61 (preferably obtained by compressing a bellows 63) and

- a welding (preferably not ultrasonic welding means 51, 53), under vacuum, of the plate 43 to the upper face 21i of the bottom wall 21 of the pocket 2, while continuing the approach of the plate 43 towards the upper face 21i of the bottom wall 21 preferably by reducing the volume of the cavity 61 (preferably obtained by compressing a bellows 63 typically from 0.3 to 0.6 mm).

The vacuum assembly process then comprises an overpressure of the cavity 61 comprising the assembled device 2300 greater than 1 bar.

The method of vacuum mounting device 2300 is accomplished by a vacuum mounting device 2500, illustrated in FIGURE 25.

The vacuum assembly device 2500 comprises a sonotrone 51 and a booster 53.

Note that the piston 5 is formed at least in part by at least part of the movable wall 3. Note that the piston 5 is formed at least in part by at least part of the bearing surface.

Alternatively, device 2300 is placed in a housing like a refill. In this variant, the wall 3 is placed in contact with a button or a wall of the housing forming the bearing surface 26. This button is guided by guide means of the device so as to press on the movable surface 3. being guided in a translational movement parallel to the direction

piston elongation 5.

FIGURES 26 to 27 illustrate a seventh embodiment of a device 3000 for dispensing a fluid. Only the differences with the device of Figure 17 will be described.

The device 3000 for distributing the fluid comprises:

- the pocket 2 comprising an internal pocket 2i and an external pocket 22, said internal pocket 2i being located at least partly in the external pocket 22, the internal pocket 2i having an internal volume arranged to contain the fluid, the external pocket 22 having an internal volume arranged not to contain the fluid, said internal volume of the external pocket 22 being delimited at least in part by a movable wall 3 (which is preferably a wall integral with a cap 305 with continuity of material, more precisely a thin wall (at least 2 times thinner than the wall thickness of the head 10)), said movable wall 3 being arranged to, under the exertion of a support pressure 18, reduce the internal volume of the inside pocket 2i (and the inside volume of the outside pocket 22) by deforming and / or by moving,

- an outlet 24 arranged to distribute the fluid.

The interior volume of the interior pocket 2i is delimited at least in part by:

a housing 9 of the piston 5 arranged to receive the piston 5 and guide it during an axial movement 11 of said piston 5 in the housing. The interior volume of the interior pocket 2i is the interior volume of the housing 9.

The device 3000 is arranged to guide the fluid according to a circuit comprising a path, passing directly from the reservoir 6 and / or a head cavity 306 to the interior of the interior pocket 2i, without passing through the interior of the outer pocket 22, (the connecting orifice 13 connecting the inner volume of the outer pocket 22 to the inside of the inner pocket 2i and / or the piston 5 not being present in this embodiment).

The head cavity 306 is a volume in the head 10 preferably comprising the product and is oriented towards the reservoir 6.

The head cavity 306 is arranged so as not to undergo compression of the fluid.

The head cavity 306 is located outside of the pocket 2i.

In the case of figure 26, the head cavity 306 corresponds to the internal volume of the piston 5.

The volume of the head cavity 306 is delimited by a flat surface which passes at the level of the wall 7.

The device 3000 also comprises a supply orifice 8 connecting the internal volume of the piston 5 and / or the reservoir 6 to the internal volume of the internal pocket 2i and located at one end of the piston 5 which enters the housing 9.

The internal volume of piston 5 is part of reservoir 6.

With reference to FIGS. 26 and 27, the expression “volume of the pocket 2” means the internal volume of the internal pocket 2i without the internal volume of the external pocket 22.

The device 3000 is arranged to operate in all the positions of the head 10, in particular the head upward or downward with respect to the terrestrial gravitational force, and comprises means for returning the piston 5 or the housing 9 (as opposed to devices / cartridges of upside down distributors, the return means are external to the cartridges) remove the passage in black

The device 3000 further comprises braking means 15 arranged to block the axial movement 11 of the piston 5 in the housing 9 when the movable wall 3 is subjected to a bearing pressure 18 (previously called external force 18) less than a threshold force.

The braking means 15 typically comprise:

- a lug or tongue located on the outside of the piston 5 and / or the inside of the housing 9, this lug or tongue being arranged to rub or be blocked by a surface respectively from the outside of the housing 9 and / or the 'inside the piston 5, and / or

- a lug or tongue located on the outside of the housing 9 and / or the inside of a wall 303 disposed around the housing 9, this lug or tongue being arranged to rub or be blocked by a respective interior surface of the wall 303 and / or exterior of the housing 9. These embodiments are preferred because they act on the face opposite the sealing face between the piston 5 and the housing 9 so as not to damage this sealing.

The piston 5 and the housing 9 are therefore arranged to allow three phases of movement of the piston 5 in the housing 9 during an exercise of the force 18 (we speak of a relative movement of the piston 5 with respect to the housing; in practice in figure 26 the housing moves (with the head 10) around the piston 5 while the piston 5 is stationary):

1) a blocking phase for which the piston 5 does not move beyond the means 15 as long as the force 18 is less than the threshold force, then a crossing of the means 15 as soon as the force 18 is greater than this threshold force ;

2) a free movement of the piston 5 in the housing 9 once the piston 5 has passed the means 15, typically according to a translation of the piston 5 of at least 0.5 mm or even 1 mm in its housing 9, making it possible to give an impulse or acceleration to the threshold force (kinetic energy) and

3) a compression phase, comprising an increase in the pressure in the pocket 2i

The cavity 306 always remains stationary.

The most important are phases 1 and 3, phase 2 is optional.

In some configurations, phase 1 can be recovered by the frictional forces of the piston in the housing (dynamic frictional force less than static frictions).

The axial movement 11 of the piston 5 is along the central axis of the piston 5. The device 3000 comprises a bearing surface 26, also called a contact surface 26, arranged to, under the exertion of the bearing pressure 18 and through the dispensing head 10, reduce the internal volume of the inner pocket 2i (and outer 22) by deforming and moving the movable wall 3.

The dispensing head 10 is arranged to move in the direction of the reservoir 6 so that when it moves towards or approaches the reservoir 6 in a direction of movement, the fluid exits laterally from the head 10 that is to say say that it exits through the outlet 24 in an outlet direction perpendicular or oblique with respect to this direction of movement.

The movable wall 3 has a technical function of spring or of return means exerting a force returning the piston 5 towards the outside of the housing 9. The head 10 comprises return means of the piston or housing without a metal spring, preferably made of polyolefin plus precisely a polypropylene (PP) (single material or same family). In another embodiment, not shown, in order to increase the return force of the movable wall 3, the pocket 2 may comprise a spring or an elastic part preferably around the piston 5 and / or the housing 9.

Note that, in planes perpendicular to the direction of the axial movement 11 of the piston 5 relative to the housing 9, the inner pocket 2i has a section smaller than the section of the outer pocket 22 and / or the area of the surface d 'support 26 arranged to receive the bearing pressure 18 from the outside of the device and / or to a section of the reservoir 6. A reduction in the section of the interior pocket 2i has the advantage of increasing the pressure of the fluid, which is particularly advantageous in the case of a spray; in the present embodiment, there is preferably a reduction of at least 2 times the section or surface of the pocket 2i relative to the pocket 22 and / or the surface 26 and / or the reservoir 6.

Device 3000 includes output 24.

The outlet 24 opens onto the outside of the device 3000.

The outlet 24 is located on the distribution head 10. The outlet 24 is arranged to distribute fluid in a direction substantially perpendicular to a direction 11 of movement of the distribution head 10.

The dispensing head 10 is arranged to follow a translational movement.

The outlet 24 is arranged to distribute fluid in a direction substantially parallel to an axis of elongation of the distribution channel 20 (lateral outlet to the head 10).

The inner pocket 2i is located under an outer surface of the device within 10mm, preferably less than 5mm, from this outer surface.

There is no intermediate rod between the bearing surface and the pocket 2i making it possible to modify its volume (as for all the embodiments of FIGS. 17 to 27, moreover).

The exercise of a support pressure 18 allows a lateral exit of the product through the outlet and a displacement of the movable wall 3 towards the reservoir 6 or next to the reservoir 6.

The device 3000 comprises a distribution orifice 22 connecting the bag 2i to the distribution channel 20.

The distribution valve 28 is inside the distribution channel 20 of the device 3000.

The distribution channel 20 of the device 3000 comprises an interior volume arranged to include (or accommodate) the distribution valve 28. Thus only the distribution valve 28 is included in the distribution channel 20.

The device 3000 comprises the dispensing valve 28 located in the dispensing channel 20, and which, in an open state, allows fluid to pass from the inside of the inner bag 2i to the outlet 24, passing through the dispensing orifice. 22 and the distribution channel 20 (in particular through the housing 80), and, in a closed state, does not allow a passage of fluid from the interior of the inner bag 2i to the outlet 24 passing through the distribution orifice 22 and by the distribution channel 20 (precisely by the housing 80). The valve 28 is not in the axis of the device.

The dispensing head 10 comprises a spray comprising a mixer 25 as previously described. The dispensing head 10 is located on around and outside the pocket

2i.

The dispensing head 10 is arranged to, by exerting pressure 18 on the bearing surface 26, move at least according to the translational movement. The translational movement of the dispensing head 10 is in the same direction and the same direction as the axial movement 11 of the housing 9 around the piston 5.

Part of the dispensing head 10 is arranged, under the exertion of the support pressure 18, to slide at least in part along an outer wall 302 of the junction wall 7 or of the bottom wall. 21 more precisely of the outer pocket 22 so as to move and / or deform the movable wall 3 of the outer pocket 22.

The bearing surface 26 is designed to, under the exertion of pressure, reduce the internal volume of the internal pocket 2i (and external 2i by deforming the movable wall 3, more exactly by crushing it towards the wall. junction 7 to the tank 6.

The deformable mobile wall 3 has a shape memory. When this wall 3 is not subjected to any external stress, it resumes or remains in its form illustrated in FIGURE 26, which maximizes the volume of the interior 2i and exterior 22 pocket.

The bearing surface 26, accessible from the outside of the device 3000 by a hand of a user, has a minimum surface of 10 mm ²

The bottom wall 21 at least partially delimits the volume of the interior pocket 2i but not the exterior 22.

The junction wall 7 may or may not at least partially delimit the piston 5.

The bottom wall 21 at least partially defines the housing 9 of the piston 5.

In the particular case of the device 3000 illustrated in FIG. 26, the braking means 15 of the piston 5 and preferably comprise at least one tongue 303 of the wall 7 directed towards the walls of the housing 9, preferably the outer edge of the walls forming the housing. 9. However, the tab may be in the cover 305 on wall 7 or 21. The tongue is oriented substantially in the axis of the piston and opposes the relative movement of the piston 5 in the housing 9, it can be deformed transversely

In the device 3000, the movable wall 3 is separated from the junction wall 7. The junction wall 7 is arranged to delimit the internal volume of the pocket 22 and the internal volume of the shell of the reservoir 6.

The junction wall 7 comprises a substantially planar shape. In the case of device 3000, the junction wall 7 is rigid, that is to say more rigid than the deformable wall 3 of the pocket 2.

The junction wall 7 is of the same rigidity as the bottom wall 21.

The junction wall 7 is fixed to the movable wall 3.

The movable wall 3 is fixed to the bottom wall 21.

The deformable wall 3 is flexible.

The movable wall 3 is typically made of PP thinner than the rest.

The piston 5 is fixed to the junction wall 7 by welding and / or molding, by interlocking or preferably are one and the same part.

The piston 5 is integral with the flat part of the junction wall 7.

The junction wall 7 is made of PP.

The piston 5 is made of the same material as the junction wall 7. On the device 3000, the piston 5 and the junction wall 7 form a single piece.

The housing 9 for the piston 5 is positioned between the piston 5 and the distribution channel 20. This channel 20 is optional in particular if a flat or sufficiently small distribution valve is used, for example of the “stud” type.

The piston 5 is hollow and cylindrical.

The outside diameter of the piston 5 includes an increase in its diameter at the end of the piston 5 giving onto the housing 9 of the piston 5. This arrangement makes it possible to have a sealed linear annular contact during compression phases, that is to say say when the dispensing head 10 is driven by the translational movement reducing the volume of the pocket 2. This allows among others to increase the sealing performance of the device 3000. A low rotational movement (for example of the ball joint type) and optionally complementary to this translational movement.

The device 3000 further comprises the supply orifice 8 connecting the interior of the piston 5 and / or the reservoir 6 to the interior volume of the interior pocket 2i without passing through the exterior pocket 22.

The device 3000 comprises the reservoir 6. The reservoir 6 does not communicate with the outer pocket 22 through the supply port 8 or through any other orifice. The reservoir 6 comprises an interior volume arranged to contain the fluid.

The device 3000 is arranged to guide the fluid along the path described above:

- passing directly from the reservoir 6 and / or from the head cavity 306 inside the inner pocket 2i, without passing through the inside of the outer pocket 22, at each increase in the volume of the inner pocket 2i ie at each raising of the head 10 ie each time the piston exits to the outside of the housing 9, then

- passing the inside of the inner pocket 2i towards the orifice 22 then the channel 20 then the outlet 24, at each bearing pressure 18 on the mobile wall 3 greater than the threshold force, and / or, at each decrease in the internal volume of the internal pocket 2i (and of the external pocket 22) ie each movement of the piston 5 towards the inside of the housing 9. The movement of the piston 5 in the housing 9 causes compression of the product present in the volume of the pocket 2i.

A supply valve 38 is located in port 8.

The valve 38 typically comprises a membrane pressed against the piston 5 on the side of the housing 9. The valve 38 is not mechanically linked to the head 10. The valve is mounted laterally, not in the axis of the head.

The valve 38, in an open state (this open state being achieved in particular during an increase in the internal volume of the pocket 2i), allows the passage of the fluid contained in the reservoir 6 and / or the interior of the piston towards the pocket 2i, and, in a closed state (this closed state being achieved in particular when the internal volume of the pocket 2i is reduced), does not allow it.

The supply valve 38 closes after a (sufficient) pressure on the movable wall 3, it thus forms the supply valve of the inner pocket 2i.

The valve 38 is designed for: - close during a movement of the piston 5 reducing the internal volume of the pocket 2i,

- Open during a movement of the piston 5 increasing the internal volume of the pocket 2i.

The device 3000 further comprises a ring 74 arranged to position and / or fit on the dispensing head 10.

The wall 7 comprises or is integral with means 304 (comprising the wall 302) arranged to guide the movement of the head 10 and located inside the head 10. This makes it possible to reduce the height of the device 3000.

As illustrated in Figure 27, the flexible reservoir is clipped with a rigid ring integral or not of the reservoir. An edge of the wall 7 makes it possible to fit the ring 74.

Pocket 2 is located:

- directly under a bearing surface 26 arranged to receive the bearing pressure 18 from outside the device, or

- Directly under an assembly consisting of a bearing surface 26 arranged to receive the bearing pressure 18 from outside the device and a channel comprising a valve.

In this embodiment, the device according to the invention comprises return means 307, non-metallic, arranged to bring up and / or out the piston 5 from its housing 9.

The area S2 of an internal section of the housing 9 is divided at least by two with respect to the area SI of a bearing surface 26 arranged to receive the bearing pressure 18 from the outside of the device.

For a spray, between 50 and 100 microliter is expelled.

The internal volume (VI) of the piston 5 is greater than 40 microliters.

The sum of the internal volume (VI) of the piston 5 and the internal volume (V2) of the housing 9 is greater than 80 microliters.

A crimping ring 180 makes it possible to crimp the reservoir on the bottom wall.

Note that this embodiment comprises the cavity 306.

This cavity 306 corresponds to the internal volume of the piston 5. This cavity 306 is not closed but the fluid contained in the reservoir 6 can circulate from the reservoir 6 to the cavity 306, and / or from the cavity 306 to the outlet 24.

However, it is noted that the majority (more than 50%) or even preferably the totality of the volume of the cavity 306 is not a dead volume, that is to say that of the fluid circulating from the reservoir 6 to the outlet 24 disturbs and necessarily creates a movement of the fluid in the cavity 306.

It is further noted that the internal volume of the cavity 306 is greater than the maximum volume of fluid leaving through the outlet 24 when the piston 5 enters its housing 11.

In FIG. 26, it can be seen that the housing 9 is formed at least in part by at least part of the movable wall 3.

The housing 9 is in direct contact with the wall forming the bearing surface

26.

The housing 9 is formed in the same part as the support surface 26 and / or the housing 9 is formed at least in part by at least part of the support surface 26.

Preferably, the housing 80 is formed in two stages:

- Firstly, the channel 20 is formed by molding, leaving an opening for the mold spindle used for this molding, this opening being typically located in the extension of the channel 20 opposite the outlet 24, then

- Secondly, at least part of this opening is closed (by injection of flexible or rigid material), the valve 28 preferably being inserted into the housing 80 through this opening.

FIGURES 28 to 29 illustrate an eighth embodiment of a device 4000 for dispensing a fluid. Only the differences with the device 3000 of FIG. 27 will be described.

The device 4000 for dispensing a fluid comprises:

- an exit 24, - a pocket 2 having an internal volume to contain a fluid, the internal volume being delimited at least in part by a movable wall 4,

- a reservoir 6 arranged to contain the fluid,

- a pocket cap 40.

The pocket cap 40 comprises a supply valve 38 which in an open state allows a passage of fluid from the reservoir 6 to the interior volume of the pocket 2 and in a closed state does not allow, and / or a dispensing valve 28 which in an open state allows a passage of fluid from the interior volume of the pocket 2 to the outlet 24 and in a closed state does not. The device 4000 comprises the supply valve 38 and the dispensing valve 28.

The supply valve 38 of the device 4000 allows, in an open state, a passage of fluid from the reservoir 6 to the interior volume of the bag 2 and in a closed state does not allow. The supply valve 38 is located in the pocket cap 40 so as to, in its open state, open the supply port 8 and, in its closed state, close the supply port 8.

In the case shown, the pocket cap 40 comprises the supply valve 38 and the dispensing valve 28.

The supply valve 38 and the supply valve 28 are integral and in one piece. The distribution valve part 38 is positioned on the supply port 8 and the distribution valve part 28 blocks the passage of fluid towards the outlet 24 in a distribution channel 20 positioned in the pocket plug 40.

The dispensing valve 38 and the supply valve 28 are positioned in a housing 130 located in the pocket cap 40.

The housing 130 of the pocket cap 40 is arranged to accommodate the supply valve 38 and the distribution valve 28. The housing 130 is connected to the distribution channel 20.

Device 4000 also includes:

- a cavity 122,

- a reservoir orifice 124 forming a junction between the reservoir 6 and the cavity

122.

The pocket stopper 40 is arranged to be mounted by insertion into the cavity 122 of the device 4000 so as to be mounted by extending: from the reservoir 6 to the outlet 24, passing through the pocket 2 at least partially while passing through the movable wall 4, or

- by following the pocket 2 at least partially (in the particular case of Figure 28 or 29, we note that the pocket stopper 40 is arranged to be mounted by insertion in the cavity 122 of the device 4000 so as to be mounted in s 'extending along pocket 2 over its entire length)

In the case of the device 4000, the pocket stopper 40 is mounted extending along the pocket 2 at least partially.

The device 4000 comprises an inlet port 120 arranged to insert the pocket stopper 40 into the device from the outside of the device 4000 and opening into the cavity 122.

The interior volume of the pocket 2 comprises at least a part (i.e. is partially or totally) outside the cavity 122.

The cavity 122 is entirely outside the reservoir 6.

The pocket cap 40 comprises an internal volume, called the head reservoir 126, arranged to open on one side to the reservoir port 124 and on the other hand to a supply port 8 connecting the head reservoir 126 to the reservoir. interior volume of pocket 2.

The cavity 122 comprises an interior volume distinct from the interior volume of the pocket 2.

The head reservoir 126 is located in the cavity 122. The head reservoir 126 includes a circular shaped end facing the side of the reservoir 6.

The movable wall 4 is fixed to at least one outer wall of the cavity 122 (and delimiting the cavity). Thus, a part of the interior volume of the pocket 2, with the exception of the interior volume delimited by the deformable wall 4, is located in the cavity 122.

The interior volume of the head reservoir 126 is at least 1 cm ³ , or even at least 3 cm ³ or even at least 5 cm ³ and / or includes air or fluid to be distributed.

The pocket stopper 40 is mounted in the cavity 122 so that a wall of the pocket stopper, inserted in the reservoir opening 124 and delimiting at least in part the head reservoir 126, forms, at the end of screwing, a first sealed junction 148 between the internal volume of the pocket 2 and the reservoir 6. The first waterproof junction 148 is arranged so that at the end of screwing, the first waterproof junction 148 is waterproof. The same goes for all other junctions inside device. The seal 149A comprises a flexible material in axial compression. The seal 149B is a skirt having a larger radial component than the axial component.

The first waterproof junction 148 is in the form of a collar and is positioned on a wall delimiting at least part of the reservoir 6. The first waterproof junction 148 is in particular placed on a part of the reservoir 6.

The sealing of the first leaktight junction 148 is produced by radial pressure (ie having a larger component radially than in other directions) in particular by fitting and / or screwing one end of the head plug 126 into one end of the reservoir. 6 in the form of a collar 148.

When the pocket plug 40 is mounted in the cavity 122, the head reservoir 126 does not extend over the entire volume of the cavity 122.

To fill the device, the pocket cap is removed, the reservoir is filled and then at least part of the cavity 122 and / or of the bag 2 with the product to be dispensed, then one end of the cap 40 is inserted into the cavity 122. , the product will then come back up in the stopper 40 and / or in the pocket 2, the air escapes through the orifice 120. The air trapped in the head tank can exit through the vent 146. The stopper is tightly screwed together using sealing elements 149A and / or 149B.

The pocket stopper 40 includes a vent 146.

The vent 146 is typically a hole which allows to evacuate the air contained in the cavity 122 and / or the reservoir 6 when the pocket plug 40 is inserted in the cavity 122. The vent 146 makes it possible to avoid 'air overpressure effect and avoid keeping air in the device.

Thus, when inserting the pocket plug 40 into the cavity 122, the air contained in the cavity 122 escapes through the vent 146. At the end of the screwing of the plug 40 the vent 146 is blocked by a wall. internal cavity 122 of cavity 122.

The head plug 40 comprises a second part 128, separate from the head reservoir 126 and arranged to conduct the fluid from the interior volume of the bag 2 towards the outlet 24. A distribution channel 20 is positioned in the second part 128. The distribution channel is included in the housing 130 of the pocket stopper 40.

The second part 128 also comprises the dispensing valve 28, positioned in the dispensing channel 20, which in an open state allows fluid to flow from the interior volume of the pocket 2 to the outlet 24 and in a closed state does not.

The outlet 24 is positioned at the second part 128 of the pocket stopper 40 and more precisely on an outer wall of the second part 128.

Thus, the device 4000 is arranged to guide the fluid according to a circuit comprising:

- a first path 141, passing from the reservoir 6 to the head reservoir 126 through the reservoir opening 124, then

- a second path 142 passing from the head reservoir 126 to the interior volume of the pocket 2 via the supply orifice 8, then

a third path 143 connecting the internal volume of the pocket 2 to the outlet 24 via the second part 128 of the pocket stopper 40.

The device 4000 is arranged to guide the fluid along the first and second path, after each end of bearing pressure 18 on the movable wall 4 of the pocket and / or at each increase in the internal volume of the pocket 2.

The device 4000 is arranged to guide the fluid along the third path, with each bearing pressure 18 on the movable wall of the pocket 2 and / or on each decrease in the internal volume of the pocket 2, said supply orifice 8 being closed by the supply valve 38.

The support pressure is typically that provided by a user pressing with one of his fingers (typically on the wall 4), possibly by means of a lever or button.

The supply valve 38 opens with each pressing pressure on the movable wall 4.

The opening of the supply valve 38 thus allows the passage of the fluid along the second path.

The dispensing valve 28 opens after each pressing pressure, for example when a user removes his finger from the movable wall 4.

The opening of the distribution valve 28 thus allows the passage of the fluid along the third path. The pocket stopper 40 comprises fixing means 132 arranged to fasten the pocket stopper 40 to walls delimiting the cavity 122 by screwing.

The fixing means 132 comprise an anti-unlocking system 132 of the pocket stopper 40 to the cavity 122 arranged to prevent loosening of the pocket stopper 40. The anti-unlocking system 132 is for example a system 132 of inclined teeth which allows a rotation of the cap in one direction to screw it but which does not allow it in the other direction to unscrew it.

The inclined teeth are arranged around the entire perimeter of the circular end of the head of the reservoir 126 facing the reservoir 6. In a variant (not shown) of the device 4000, teeth are inserted into recesses during tightening and which after tightening are blocked in the hollows, thus preventing the loosening of the head reservoir 126 in the cavity 122.

The reservoir 6, the cavity 122 and the pocket 2, with the exception of the movable wall 4 of the pocket 2, are integral so as to form a single piece.

The movable wall 4 of the pocket 2 is assembled by welding to the single part formed by the cavity 122 and the reservoir 6.

The mobile wall 4 of the pocket is flexible, that is to say less rigid than the rest of the pocket 2.

The movable wall 4 is typically made of PP, PE or TPO and thinner than the thickness of the cavity 122 or of the reservoir 6.

The movable wall 4 of the pocket 2 is of convex shape, that is to say it comprises a curvature. For example, the pocket is concave in shape (in the direction of the cavity 122 towards the pocket 2). In a variant not shown, the pocket 2, in particular the movable wall 4, may be of different shape, for example elliptical, rectangular, square, spherical, etc.

The reservoir 6 and the cavity 122 form a single piece.

The reservoir 6 and the cavity 122 are produced by polymer injection and / or PP, PE or TPO blowing. The reservoir 6 is a cylindrical chamber provided with a piston, this piston is preferably made of the same material as the walls of the reservoir, preferably made of polyolefin, preferably it comprises a single annular strip arranged to be compressed against the internal walls of the reservoir .

The reservoir 6 extends in a longitudinal direction centered on a first axis of elongation A. The pocket 2 extends in a longitudinal direction centered on a second axis of elongation and / or the pocket cap 40, preferably the head reservoir 126, which can extend in a longitudinal direction centered on a third axis of elongation C.

The first axis of elongation A is offset relative to the second axis and / or the third axis C. In this way, the reservoir 6 and the pocket cap 40, in particular the head reservoir 126, are not centered on the same axis. , they are off-center.

The first axis of elongation A and / or the second axis of elongation and / or the third axis of elongation C are mutually parallel.

The pocket stopper 40 extends in an elongation direction 136, coincident with the longitudinal direction of the pocket stopper 40. The pocket stopper 40 is arranged to be mounted by insertion in the cavity 122 in a parallel insertion direction. to its direction of elongation 136, the inlet orifice 120 and the reservoir orifice 124 being aligned in the direction of elongation 136.

The plane of the inlet orifice 120 and the plane of the orifice of the reservoir 124 are mutually parallel and orthogonal to the direction of elongation 136 of the pocket plug 40.

The pocket cap 40 is inserted into the cavity 122 through the inlet port 120. The pocket cap 40 is then screwed to the reservoir 6 via the anti-unlocking system 132.

Note that, in a variant of the device 4000 for which the supply valve is not carried by the cap 40 but directly connects the reservoir 6 to the bag 2, then the device 4000 is arranged to guide the fluid according to a circuit :

- not including the first path 141, passing from the reservoir 6 to the head reservoir 126 through the reservoir opening 124, then If the valve is on the bottom wall there is no first path, we do not go through the head tank

- not including the second path 142 passing from the head reservoir 126 to the internal volume of the bag 2 via the supply port 8, then

- comprises only a path passing from the reservoir 6 to the pocket 2 then the path 143 connecting the internal volume of the pocket 2 to the outlet 24 via the part 128 of the pocket cap 40. FIGURE 30 illustrates a ninth embodiment of a device 5000 for dispensing fluid. Only the differences with the device 4000 of Figures 28-29 will be described.

More specifically, Figure 30 illustrates a variant of the device 4000 illustrated in Figures 28-29.

In the device 5000, the reservoir 6, the cavity 122 and the pocket 2 are integral so as to form a single piece.

The reservoir 6, the cavity 122 and the pocket 2 are made by injection of PP, PE or TPO polymer or by 3D printing (For 3D printing we can make the rigid part in rigid TPU and the flexible (deformable) part in TPU flexible).

In the case of the device 5000, the pocket cap 40 also includes the head reservoir 126 inserted into the cavity 122.

In device 5000, when pocket plug 40 is mounted in cavity 122, head reservoir 126 extends the entire length of cavity 122 arranged to accommodate head reservoir 126.

The pocket stopper 40 also comprises the vent 146 arranged to evacuate the air contained in the cavity 122 when the pocket stopper 40 is being inserted into said cavity 122.

The cavity 122 is separate from the interior volume of the pocket 2.

When the pocket stopper 40 is inserted into the cavity, the device 5000 comprises the first sealed junction 148 formed between the volume of the pocket 2 and the reservoir 6 when the pocket stopper 40 is fixed in the cavity 122.

The first sealed junction 148 is formed when the walls of the cavity 122 exert a transverse or radial force at the level of the walls of the head tank 126 positioned near the tank 6 and inserted into the cavity 122.

However, this sealed junction 148 is not essential, since there could be a slight play at the level of the element 124 and a slight relief on the element 150.

The pocket stopper 40 is mounted in the cavity 122 so that a wall of the pocket stopper 40, inserted in the reservoir opening 124 and delimiting at least in part the head reservoir 126 forms, at the end of screwing, a second sealed junction 150 between the internal volume of the pocket 2 and the head reservoir 126.

The second waterproof junction 150 is arranged so that at the end of screwing, the second waterproof junction 150 is at least 50% tight against the product.

In the device 5000, the vent 146 is arranged to expel the air contained in the cavity 122 or the head reservoir 126 out of the device 5000 when the pocket cap 40 is being mounted or arranged in. the cavity 122.

In a variant (not shown) of the device 6000, the reservoir 6 may comprise at least one flexible wall arranged to be inserted into the head reservoir 126 as the reservoir 6 is emptied of its fluid according to the same principle of the device 700 illustrated in Figures 10, 11 and 12.

There is a seal between the cap 40 and the bottom wall 21.

FIGURES 31 and 32 illustrate a tenth embodiment of a device 6000 for dispensing a fluid. Only the differences with the device 4000 of Figures 28-29 will be described.

In the device 6000, the reservoir 6, the cavity 122 and the pocket 2 are integral so as to form a single part.

The reservoir 6, the cavity 122 and the pocket 2 are produced by 3D printing.

The cavity 122 is provided with deformable walls forming the parts 611, 662 and 663 of the reservoir 6 and arranged to laterally increase the capacity of the reservoir 6.

In the device 6000, the reservoir 6 is divided into several parts 661, 662, 663. This embodiment therefore comprises several supply orifices 124 (one per part of the reservoir 6) connecting the reservoir 6 to the cavity 122.

The device 6000 comprises two pockets 211 and 212, diametrically opposed to each other on an external wall of the cavity 122 (or of the reservoir 6).

For this reason, the device 6000 comprises two supply orifices 8 each connecting the reservoir 6 or the cavity 122 inside the pocket 2.

The deformable walls of the parts 661, 662 and 663 of the reservoir 6 are distinct from the pockets 211 and 212. The deformable walls 662, 663 are at least partially positioned between the pockets 211 and 211. The two pockets 211 and 212 are identical but in a variant of the device 6000 (not illustrated), these two pockets 211, 212 can be of different shape and therefore of different interior volumes. It is also conceivable that the reservoir 6 is arranged to contain two distinct fluids and that the pockets 211 and 212 are arranged to each accommodate a particular fluid.

The pocket stopper 40 comprises two supply valves 38 which, each in an open state allows a passage of fluid from the reservoir 6 and / or from the cavity 122 to the interior volume of the pocket respectively 211 or 212 and in a state closed does not allow.

The device 6000 also comprises the dispensing valve 28, separate from the two supply valves 38, which in an open state allows fluid to flow from the interior volume of the bag 2 to the outlet 24 and in a closed state does not.

The fluid therefore passes from the reservoir 126 and / or from the cavity 122 to a pocket 2 (211 or 212) and from this pocket 2 to the channel 20 of the pocket plug 40 before reaching the distribution valve 28. The distribution valve 28 is positioned in the distribution channel 20.

The first axis of elongation A is not offset with respect to the third axis C. In this way, the reservoir 6 and the pocket plug 40 are centered on the same axis, they are coaxial.

In the particular case of FIG. 32, it will be noted that the pocket stopper 40 is arranged to be mounted by insertion in the cavity 122 of the device 4000 so as to be mounted while extending only partially along the pocket 2.

FIGURE 33 illustrates an eleventh embodiment of a device 7000 for dispensing a fluid. Only the differences with the device 6000 of Figures 31-32 will be described.

The pocket plug 40 of the device 7000, the distribution channel 20 and the supply 38 and distribution 28 valves.

The interior volume of the pocket 2 is entirely included in the cavity 122.

The cavity 122 is entirely outside the reservoir 6. In particular, the pocket 2 and the mobile wall 4 of the pocket are positioned in the interior volume of the cavity 122.

In device 7000, the distribution valve 28 is positioned in the distribution channel 20 of the pocket cap 40.

The device 7000 is arranged to guide the fluid passing from the reservoir 6 to the interior volume of the bag 2 via the orifice of the reservoir 124 and from the interior volume of the bag 2 to the distribution channel 20 via a distribution orifice 8 connecting the volume. inside the pocket 2 to the distribution channel 20.

The movable wall of the pocket 2 is of convex shape, that is to say it comprises a curvature. For example, the pocket is concave on the inside side of the pocket.

The pocket cap 40 includes a portion 140, different from the head reservoir 126 of Figures 28-29. In fact, in the case of the device 8000, the cavity 140 is not arranged to open out on one side onto the reservoir opening 124 and on the other hand onto a supply orifice 8 connecting the head reservoir 126. to the internal volume of the pocket 2. The fluid to be distributed passes directly from the reservoir 6 to the internal volume of the pocket 2 via the reservoir or supply port 124 or supply 8 (these two orifices being combined).

The pocket 2 includes a threaded collar. The part 140 of the pocket stopper 40 is inserted into the skirt of the cavity thus delimiting the first sealed junction 148 between the internal volume of the pocket 2 and the reservoir 6.

The stopper 40 is arranged to slide in the bottom wall at the level of the junction 148.

The first waterproof junction 148 is arranged so that at the end of screwing, the first waterproof junction 148 is waterproof to the product.

The device 7000 comprises a bearing surface 26 positioned on the pocket stopper 40, also called the contact surface 26, arranged for, under the exertion of the bearing pressure 18 and via the pocket stopper 40, reduce the internal volume of the pocket 2 by deforming and moving the movable wall 4. When pressing the bearing surface 26, the head tank slides in the skirt (the pocket is crushed). In a preferred embodiment, the part 140 comprises a plug 145 on the side of the reservoir, in this case, the internal volume of the part 140 preferably comprises a gas such as air. The internal volume of the part 140 extends from the reservoir 6 or from the cap 145 to the dispensing valve. The volume of the part 140 can be at least 1 cm ³ , or even at least 3 cm ³ or even at least 5 cm ³ , it can comprise a gas and / or fluid to be distributed.

The stopper 40 is arranged to slide in a ring 159 while being guided by this ring 159.

The mobile wall 4 of the pocket comprises a first collar 158 arranged to be assembled (fitted or screwed or clipped) in the head stopper 40, in particular at the level of the head of the pocket stopper 40. The collar 158 of the cavity 122 comprises a wall thicker than the wall delimiting the movable wall 4 of the pocket 2. The upper end of the collar 158 of the pocket 2 forms the inlet opening 120.

FIGURE 34 illustrates a twelfth embodiment of a device 8000 for dispensing fluid. Only the differences with the device 7000 of FIG. 33 will be described.

In device 8000, the cavity 122 coincides with the pocket 2. Thus, the internal volume of the pocket 2 is equal to the internal volume of the cavity 122.

The device 8000 includes a pocket housing 160 positioned at least in part in the pocket 2 in which the supply valve 38 and the dispensing valve 28 are positioned. The housing 160 of the pocket 2 is arranged to accommodate the dispensing valve 38 and the supply valve 28.

The dispensing valve 28 and the supply valve 38 form a single piece.

The device 8000 is arranged to guide the fluid passing from the reservoir 6 to the interior volume of the bag 2, in particular in the interior volume formed by the movable wall 4 of the bag 2, via the orifice of the reservoir 124 or supply 8. (these two orifices being merged) and from the interior volume of the bag 2 to the distribution channel 20 via a distribution orifice 8.

The movable wall 4 of the pocket 2 is of convex shape, that is to say it comprises a curvature. For example, pocket 2 is concave in shape.

The pocket stopper 40 has the shape of a T having an upper part 162, the head 162 of the T, and a lower part 140. The part 140 be arranged to contain fluid or not contain fluid. The fluid can be air, under vacuum, or fluid to be delivered by device 8000.

In the case of the device 8000, the pocket stopper 40 is inserted into the cavity 122 (the pocket 2) by screwing. For this, the cavity 122 and more specifically the mobile wall 4 of the pocket comprises a first flange 158 arranged to be assembled (fitted or screwed or clipped) in the head cap 40, in particular at the head of the pocket cap 40 The collar 158 of the cavity 122 comprises a wall that is thicker than the wall delimiting the movable wall 4 of the pocket 2. The upper end of the collar 158 of the pocket 2 forms the inlet orifice 120.

The portion 140 of the pocket cap 40 is different from the head reservoir 126 of Figures 28-29. The part 140 is a cylinder centered on an axis R. The part 140 of the pocket stopper 40 is designed to be inserted into the cavity 122, in particular into the internal volume of the pocket 2 so that the internal volume of the movable wall 4 and the part 140 are centered on a common axis, the axis R. In this way, the internal volume of the movable wall 4 and the part 140 are coaxial.

The pocket 2 includes a second collar. The part 140 of the pocket cap 40 is inserted into the second collar of the cavity thus delimiting the first sealed junction 148 between the internal volume of the pocket 2 and the reservoir 6.

The first waterproof junction 148 is arranged so that at the end of screwing, the first waterproof junction 148 is at least 50% tight against the product.

FIGURES 35-40 illustrate another embodiment of a device 3500 for dispensing fluid. FIGURES 41-46 illustrate another embodiment of a device 4100 for dispensing a fluid. For these two modes 3500, 4100, only their differences with the device 7000 of FIG. 33 will be described.

Each of the device embodiments 3500, 4100 for dispensing fluid includes:

- exit 24, - the pocket 2 having an internal volume to contain a fluid, the internal volume of the pocket 2 being delimited at least in part by the movable wall 4,

- the reservoir 6 arranged to contain the fluid and comprising two openings, the upper opening 124 of which is oriented towards the pocket 2 and a lower opening 87, said reservoir 6 being arranged to reduce its internal volume when the fluid exits the reservoir,

- the distribution valve 28 which, in an open state allows passage of the fluid from the bag 2 to the outlet 24, and, in a closed state, does not allow it,

the supply valve 38 which, in an open state, allows the passage of the fluid contained in the reservoir 6 towards the bag 2, and which, in a closed state, does not allow it.

The lower opening 87 is arranged to allow a passage of the fluid, preferably a passage of a cannula (or filling rod) transporting the fluid, so as to fill the reservoir 6 with fluid at least in part at least up to the supply valve 38 so that the fluid is in contact with the supply valve 38 and preferably so as to fill with fluid also at least partly the interior volume of the bag 2.

The supply valve is designed to allow the cane or cannula to pass, for example by bending.

FIGURES 35-40 illustrate one embodiment of a device 3500 for dispensing fluid. Only its differences with the device 7000 of FIG. 33 will be described.

The reservoir 6 is delimited at least in part by a movable piston 86 arranged to move so as to reduce the internal volume of the reservoir 6 when the fluid exits from the reservoir 6, this piston 86 being provided with the lower opening 87 , the lower opening 87 being blocked by a removable plug 89.

The removable stopper 89 is screwed onto the piston 86.

The piston 86 is included between the reservoir 6 and a bottom wall 91, said bottom wall 91 being provided with means 93 for locking the piston 86 in rotation. when screwing the stopper 89 on the piston 86 when the piston 86 is in contact with the bottom wall 91.

Different variants of this embodiment 3500 can be combined with one another:

- in the variant illustrated in FIG. 36, the means 93 typically comprise for example a slot into which a part of the piston 86 fits, and / or

- in the variant illustrated in FIG. 37, the means 93 typically comprise, for example, clipping means, and / or

- in the variant illustrated in Figure 39, the piston 86 is provided with at least one hole 95 arranged to allow passage of the fluid between the reservoir 6 and a sealing zone 97 between the piston 86 and a wall 99 the along which the piston 86 is arranged to move, and / or

- the piston can have a curved shape (disc, ellipse, or other) or a polygon. In the variant illustrated in Figure 40, the piston 86 has, in a sectional view perpendicular to a direction of movement of the piston 86 along a wall 99, a polygon shape comprising several sides connected by angles, the device further comprising a force distributing part 103 arranged to press the piston 86 against the wall 99 at several (preferably all) sides of the polygon but outside the angles of the polygon. In another variant, the distribution part 103 can be replaced by a variable thickness of the walls of the piston 86.

FIGURES 41-46 illustrate another embodiment of a device 4100 for dispensing a fluid. Only its differences with the device 3500 of Figures 35 to 40 will be described.

The reservoir 6 arranged to contain the fluid is delimited by:

- a flexible wall 108 comprising the two openings, the upper opening 124 of which faces towards the pocket 2 and the lower opening 87, and

a rigid wall 91, preferably removable, designed to block the lower opening 87. The area of a section of the top opening 124 (this section being chosen to minimize the area of the top opening 124) is at least twice (and even at least four times) smaller than the area d a section of the lower opening 87 (this section being chosen to minimize the area of the lower opening 87).

The flexible wall 108 is arranged to deform so as to reduce the internal volume of the reservoir 6 when the fluid exits from the reservoir 6.

The device 4100, more exactly the rigid wall 91, is arranged to keep the position of the lower opening 87 in the device 4100 fixed with respect to the position of the upper opening 124 in the device 4100.

The flexible wall 108 is fixed to the pocket 2 according to a sealed junction.

The flexible wall 108 comprises a cylinder 81 above the reservoir 6 allowing sealing. In order to have the seal, either this cylinder 81 is compressed (case of Figures 42 and 44), or it is nested (case of Figure 41). It is preferable to have a second cylinder concentric with the first cylinder 81.

The device 4100 comprises means 110 for internal guiding of the cap (which is the part forming the internal volume of the pocket 2 and further containing the dispensing valve 28). The means 110 are arranged to guide a movement of the cap. The means 110 take the form of a wall 110 emerging from the bottom wall 21.

The device 4100 comprises a useful retaining hollow 111 in particular in the case where the reservoir 6 is a changeable cartridge. This hollow 111 makes it possible, when this hollow is held by fingers or clips of an external housing, to keep the reservoir 6 fixed while the cap or head can rotate.

Different variants of this 4100 embodiment can be combined with one another:

- the flexible wall 108 is fixed to the pocket 2 according to a sealed junction:

o by welding, and / or

o by clipping (by a clip 83), and / or by interlocking, as illustrated in the variant of Figure 41 and / or o by compression of the flexible wall 108 around its upper opening 124 between on the one hand a part forming or integral with the pocket 2 and located outside the reservoir 6 and on the other hand a ring 109 (and whose edge upper forms the supply seat 62 as previously described) inserted inside the reservoir 6, as illustrated in the variants of Figures 42 and 44, 46. In the variant of Figure 42, the ring 109 is integral with the rigid wall 91 and the ring 109 and the wall 91 form the same part with continuity of material, while in the variant of Figures 44 and 46 the ring 109 and the wall 91 form two distinct parts without continuity of material; and or

the flexible wall 108 and the supply valve 38 are formed in the same part with continuity of material (as illustrated in Figures 41 to 43) or in two separate parts without continuity of material (as illustrated in Figures 44 to 46) .

Note that in all of the embodiments described above, the device is arranged to operate (ie to distribute fluid through the outlet via the supply and / or distribution valves) with its distribution head upwards ( ie the outlet 24 located above the tank 6) or downwards (ie the outlet 24 located below the tank 6).

Of course, the invention is not limited to the examples described and numerous modifications can be made to these examples.

For example, in all of the embodiments and variants that have just been described:

- the force 18 can be exerted directly by a user or via a button, and / or

- in the case of a mini reservoir with a piston, the pressure equalization hole is at least 3 mm ^{2 in size} .

For example, in all of the embodiments and variants of Figures 17 to 27: - the device may comprise means for pre-guiding the piston 5 in its housing 9, these pre-guiding means typically comprising at least one tongue 17 and / or at least one wall 65

- The wall 3 (or "spring" 3) may form part of the head 10, or may be a part independent of the head 10, for example a flexible cylinder arranged to compress.

In the case of figure 26, it is possible to interchange the piston 5 and the housing 9.

In that case :

- the piston 5 is integral with the head 10 and the wall 21, and / or

- the housing 9 is integral with the wall 7, and / or

- the head cavity 306 is located under the housing 9, outside the piston 5, and / or

- the junction wall 7 at least partially defines the housing 9 and / or the head cavity 306, and / or

- the bottom wall 21 at least partially defines the piston 5, and / or

- The translational movement of the dispensing head 10 is in the same direction and the same direction as the axial movement 11 of the piston 5 in the housing 9.

Claims

1. Device for dispensing a fluid, comprising:

- a pocket (2) comprising an internal pocket (2i), said internal pocket having an internal volume arranged to contain the fluid,

- a movable wall (3) being arranged to, under the exertion of a bearing pressure (18) on a bearing surface (26), reduce the internal volume of the inner pocket (2i) by deforming and / or by moving,

- an outlet (24) arranged to distribute the fluid,

characterized in that the interior volume of the interior pocket (2i) is delimited at least in part by:

- a piston (5) integral with a junction wall (7) or a bottom wall

(21),

- a housing (9) of the piston (5) arranged to receive the piston (5) and guide it during an axial movement (11) of said piston (5) in the housing, the piston or the housing being formed at least in part by at least part of the movable wall, and / or:

- the piston or the housing being in direct contact with a wall forming the bearing surface; or

- the piston or the housing being formed at least in part by at least part of the bearing surface.

2. Device according to claim 1, characterized in that the pocket (2) further comprises an outer pocket (22), said inner pocket (2i) being located at least partly in the outer pocket (22), said inner pockets. and outer (2i, 22) each having an inner volume arranged to contain the fluid, said inner volume of the outer pocket (22) being delimited at least in part by the movable wall (3), said movable wall (3) being arranged for, under the exertion of the support pressure (18), reduce the internal volume of the outer pocket (22) by deforming and / or moving.

3. Device according to claim 2, characterized in that the junction wall (7) and / or the bottom wall (21) at least partially defines the internal volume of the external pocket (22).

4. Device according to claim 2 or 3, characterized in that it comprises braking means (15) arranged to block an axial movement (11) of the piston (5) in the housing (9) reducing the internal volume of the inner pocket (2i) and outer pocket (22) when the movable wall (3) is subjected to a bearing pressure (18) less than a threshold force.

5. Device according to the preceding claim, characterized in that:

- the braking means (15) are integral with the piston (5) and preferably comprise at least one tongue (17) inclined towards the outside of the piston (5), and / or

- The braking means (15) are integral with the housing (9) of the piston (5) and preferably comprise at least one inclined tongue (17) towards the inside of the housing (9).

6. Device according to any one of claims 2 to 4, characterized in that it comprises a reservoir (6) communicating with the outer pocket (22) via a supply port (8), said reservoir (6) comprising an interior volume arranged to contain the fluid, said interior volume being delimited at least in part by a deformable envelope (56).

7. Device according to any one of claims 2 to 5, characterized in that the device is arranged to guide the fluid according to a circuit comprising:

- a first route, passing:

o from the inside of the outer pocket (22) to the inside of the inner pocket (2i) via at least one connecting hole (13) connecting the inner volume of the outer pocket (22) to the inside of the inside pocket (2i), and

- a second path, passing from the inside of the interior pocket (2i) to the outlet (24).

8. Device according to claim 7, characterized in that the device is arranged to guide the fluid along the second path, at each bearing pressure (18) on the movable wall (3) greater than the threshold force and / or at each reduction of the internal volume of the internal pocket (2i) and of the external pocket (22) for which the connection orifice (13) is closed.

9. Device according to any one of claims 7 to 8, characterized in that the device is arranged to guide the fluid along the first path, after an end of each support pressure (18) greater than the threshold force, and / or on each increase in the interior volume of the interior pocket (2i) and of the exterior pocket (22) for which the connection orifice (13) is open.

10. Device according to any one of claims 7 to 9, characterized in that the connection orifice (13):

- is formed at a junction (19) between one end of the piston (5) and one end of the housing (9) of the piston (5), and / or

- Includes a hole (23) located in the housing (9) of the piston (5).

11. Device according to any one of claims 7 to 10, characterized in that the connecting orifice (13) is arranged for:

- close when the piston (5) moves, reducing the internal volume of the pocket (2),

- open during movement of the piston (5) increasing the internal volume of the pocket (2).

12. Device according to claim 1, characterized in that it further comprises an outer pocket (22), said inner pocket (2i) being located at least partly in the outer pocket (22), the inner pocket (2i). having an interior volume arranged to contain the fluid, the exterior pocket (22) having an interior volume which is not arranged to contain the fluid, said interior volume of the exterior pocket (22) being delimited at least in part by the wall movable (3), said movable wall (3) being arranged to, under the exertion of the bearing pressure (18), reduce the internal volume of the outer pocket (22) by deforming and / or by moving, the device being arranged to guide the fluid according to a circuit comprising a path passing directly from a reservoir (6) and / or from the interior of the piston (5) to the interior of the interior pocket (2i), without go through the inside of the outer pocket (22).

13. Device according to any one of the preceding claims, characterized in that it further comprises a distribution channel (20) arranged to conduct the fluid coming from the inner bag (2i) to the outlet (24).

14. Device according to claim 13, characterized in that the device comprises a distribution valve (28) located in the distribution channel (20) and arranged to lead the fluid from the inner bag (2i) to the outlet (24). .

15. Device according to the preceding claim, characterized in that it further comprises:

- the distribution valve (28),

- a mixer (25) arranged to receive different separate streams of fluid and mix them in the form of a spray at the outlet (24), one end of the dispensing valve (28) being integral with a rod ( 27) arranged to sink into the mixer (25) so as to form different channels arranged to lead the different separate flows of fluid to the mixer (25).

16. Device according to any one of the preceding claims, characterized in that the movable wall (3) comprises or is a deformable wall.

17. Device according to any one of the preceding claims, characterized in that the movable wall (3) comprises the junction wall (7).

18. Device according to any one of claims 1 to 16, characterized in that the movable wall (3) is separated from the junction wall (7).

19. Device according to the preceding claim, characterized in that the movable wall (3) comprises or is a rigid wall.

20. Device according to the preceding claim, characterized in that the deformable casing (56) of the reservoir (6) comprises successive radial corrugations (562) about an axis.

21. Device according to any one of the preceding claims, characterized in that it further comprises braking means (15) arranged to block an axial movement (11) of the piston (5) in the housing (9) reducing the interior volume of the interior pocket (2i) when the movable wall (3) is subjected to a bearing pressure (18) less than a threshold force, the braking means (15) preferably comprising: - a lug or tab located on the outside of the piston (5) and / or the inside of the housing (9), this lug or tab being arranged to rub or be blocked by a surface respectively inside the housing (9) ) and / or from the outside of the piston (5), and / or

- a lug or tongue located on the outside of the housing (9) and / or the inside of a wall (303) arranged around the housing (9), this lug or tongue being arranged to rub or be blocked by a surface respectively inside the wall (303) and / or outside the housing (9).

22. Device according to any one of the preceding claims, characterized in that the inner pocket (2i) is located under an outer surface of the device less than 10mm from this outer surface.

23. Device according to any one of the preceding claims considered as dependent on claim 6, characterized in that the exercise of a bearing pressure (18) allows a lateral exit of the product through the exit and a displacement of the movable wall (3) towards the tank or next to the tank.

24. Device according to any one of the preceding claims considered as dependent on claim 2 or 6, characterized in that, in planes perpendicular to the direction of axial movement (11) of the piston (5) relative to the housing (9) , the inner pocket (2i) has a section smaller than the section of the outer pocket (22) and / or the area of the bearing surface (26) arranged to receive the bearing pressure (18) from the 'exterior of the device and / or a section of the reservoir (6).

25. Device according to any one of the preceding claims, characterized in that the pocket (2) is located:

- directly under the bearing surface (26) arranged to receive the bearing pressure (18) from outside the device, or

- directly under an assembly formed by the bearing surface (26) arranged to receive the bearing pressure (18) from outside the device and a channel comprising a valve.

26. Device according to any one of the preceding claims, characterized in that it comprises return means (307), preferably non-metallic, arranged to raise the piston (5) from its housing (9).

7. Device according to any one of the preceding claims, characterized in that the area (S2) of an internal section of the housing (9) is divided at least by two with respect to the area (SI) of the surface. support (26) arranged to receive the support pressure (18) from outside the device.