Improved priming product dispensing device and associated filling process.

Abstract

The invention relates to a product dispensing device, comprising: an orifice communicating with the outside of the device, a stopper, a stopper housing; the device being arranged to, at least in the absence of the stopper, evacuate the fluid and / or gas through the stopper housing from a fluid pocket and / or reservoir to the orifice.The stopper housing comprises at least one principal part, and the stopper comprises at least one principal part. The principal part of the stopper housing is arranged to accommodate the principal part of the stopper, such that in a first insertion position of the stopper into the stopper housing from the orifice, fluid and / or gas can escape from the stopper housing through the orifice along and / or around the stopper. In a second insertion position of the stopper into the stopper housing from the orifice, in which the stopper is inserted or displaced further within the stopper housing than in the first insertion position, fluid and / or gas can no longer escape from the stopper housing through the orifice along and / or around the stopper. See Figure 5 for abbreviations.

Description

Title of the invention: Improved priming product dispensing device and associated filling method. technical field

[0001] The present invention relates to a product dispensing device. It also relates to an associated filling method. Prior art

[0002] Devices for distributing product or fluid are known.

[0003] However, filling these devices according to the state of the art can pose certain priming problems in that it can be difficult to expel a maximum of gas or air during filling before first use.

[0004] The object of the present invention is to solve this problem. Description of the invention

[0005] This objective is achieved with a product dispensing device, comprising: - An opening communicating with the outside of the device, - A cork, - A plug housing,

[0006] the device being arranged to, at least in the absence of the cap, evacuate the fluid and / or gas through the cap housing from a fluid pocket and / or reservoir to the orifice

[0007] characterized in that:

[0008] the plug housing comprises at least one main part,

[0009] the stopper comprises at least one main part,

[0010] the main part of the stopper housing being arranged to accommodate the main part of the stopper, such that: - in the initial insertion position of the cap into the cap housing from the opening, fluid and / or gas may escape from the cap housing through the opening along and / or around the cap, and - in a second insertion position of the cap in the cap housing from the orifice, for which the cap is pushed further into the cap housing than in the first insertion position, fluid and / or gas can no longer escape from the cap housing through the orifice along and / or around the cap.

[0011] The main part of the stopper housing may include a large section and a small section smaller than the large section, the large section being oriented towards the orifice and the small section being oriented towards the pouch and / or reservoir.

[0012] The main part of the stopper may include a lateral cavity arranged for the passage of fluid and / or gas along and / or around the stopper in the first insertion position of the stopper and for airtight storage of fluid and / or gas in the second insertion position of the stopper.

[0013] The lateral cavity can be defined between two sealing rings carried by the main part of the cap.

[0014] According to the invention: - The plug housing may comprise the following two communicating parts: • its main part oriented towards the opening • a thinned part oriented towards the pouch and / or reservoir, the thinned part having a smaller cross-section than the main part of the cap housing.

[0015] and / or - The cap may comprise two adjoining parts: • its main part • a finger, the finger having a smaller cross-section than the main part of the cork.

[0016] Preferably, the finger of the cap can be arranged to fit into the thinned part of the cap housing, so that, at least in the first position of insertion of the cap, the finger expels fluid and / or gas from the thinned part towards the orifice.

[0017] According to the invention: - the opening can be an outlet of the device - the main part of the cap may carry a dispensing valve and / or the The main part of the cap housing houses a dispensing valve, which in an open state allows fluid to pass from inside the bag and / or reservoir to the outlet, and, in a closed state, does not allow fluid to pass from inside the bag and / or reservoir to the outlet.

[0018] The device according to the invention may include the pouch and a distribution orifice which connects the internal volume of the pouch to the internal volume of a channel.

[0019] The bag can be a deformable bag having an internal volume arranged to contain the fluid.

[0020] The cap housing may include clipping or snapping means arranged to hold the cap in its first insertion position.

[0021] The device according to the invention may include the pouch and the reservoir, and may further include a feed orifice that connects the internal volume of the pouch to the internal volume of the reservoir, and a feed valve that in a state When open, it allows fluid to pass from the reservoir into the inside of the bag, and, when closed, it does not allow fluid to pass from the reservoir into the inside of the bag.

[0022] The device according to the invention may further include a vent directly connecting the internal volume of the reservoir to the housing without passing through the pouch. The cap may include a vent stopper arranged to close the vent when the cap is in its second insertion position. The vent stopper may be arranged so as not to close the vent when the cap is in its first insertion position.

[0023] According to yet another aspect of the invention, a method for filling a device according to the invention is proposed, in which: - The bag and / or reservoir is filled with fluid while the cap is inserted in its first insertion position in the cap housing or is not inserted in the cap housing at all, and: • Fluid and / or gas is drawn up from the bag or reservoir towards the orifice, preferably by squeezing the bag and / or reservoir to reduce its volume and / or by injecting fluid into the reservoir, and / or • The cap is pushed in or moved in the cap housing so as to move it from its first insertion position to its second insertion position.

[0024] According to the invention: • Fluid and / or gas can be drawn up from the pouch or reservoir towards the orifice, • Then, a level of fluid or plug in the plug housing can be detected by a sensor, preferably optical or ultrasonic, above a predefined threshold. • then the cap can be pushed in or moved in the cap housing so as to move it from its first insertion position to its second insertion position.

[0025] According to the invention: • Fluid and / or gas can be drawn up from the pouch or reservoir towards the orifice, preferably by squeezing the pouch and / or reservoir to reduce its volume and / or by injecting fluid into the reservoir, preferably when the stopper is not inserted into the stopper housing at all. • Then, a fluid level can be detected in the cap housing by a sensor, preferably optical or ultrasonic, above a predefined threshold. preferably when the cap is not inserted into the cap housing at all • then the stopper can be pushed in or moved within the stopper housing so as to move it from outside the housing to its first insertion position, so that the volume of gas in the housing replaced by the volume of the stopper and / or of fluid in the housing escapes from the stopper housing through the orifice along and / or around the stopper, • then the cap can be pushed in or moved in the cap housing so as to move it from its first insertion position to its second insertion position.

[0026] According to the invention: • Fluid and / or gas can be drawn up from the pouch or reservoir towards the orifice, preferably by squeezing the pouch and / or reservoir to reduce its volume and / or by injecting fluid into the reservoir, while the stopper is inserted in its first insertion position in the stopper housing, so that the volume of gas in the housing replaced by the volume of the stopper and / or of fluid in the housing escapes from the stopper housing through the orifice along and / or around the stopper, • Then, a sensor, preferably optical or ultrasonic, can detect the level of the cap above a predefined threshold when the cap is inserted in its initial position in the cap housing. • then the cap can be pushed in or moved in the cap housing so as to move it from its first insertion position to its second insertion position.

[0027] According to yet another aspect of the invention, a manufacturing method is proposed (possibly combinable with a filling method according to the invention) for a product dispensing device comprising a reservoir with a variable volume achieved by movement of a piston within walls which, together with the piston, at least partially delimit the internal volume of the reservoir, said filling method comprising the following steps: - The piston is placed or inserted into the walls at an inlet of the tank, so as to maintain a gas passage zone between the piston and the walls; then, - a gas vent from the tank to the outside of the product dispensing device through the passageway; then - The piston enters the tank deeper than when it was positioned at the tank inlet.

[0028] The passage zone may include at least one escape means formed in the walls on the piston side, such as at least one recess or relief formed in the walls on the piston side and / or by microstructures on at least a portion of the walls in contact with the piston, and / or,

[0029] includes at least one escape means on at least a portion of the piston in contact with the walls, such as at least one hollow or relief formed in the piston on the side of the walls and / or microstructures on at least a portion of the piston in contact with the walls,

[0030] The passage area may include at least one exhaust means formed in the walls on the side of the piston only on a limited area of ​​the walls so that this limitation of the limited area limits the extent of the air passage area.

[0031] Evacuation can be carried out by suction or vacuum or by creating a vacuum in a space located outside the product distribution device by means of a tool.

[0032] The tool may include a sealing gasket which, during suction or depression or vacuum, is positioned on the outer perimeter of the reservoir inlet where the piston is flush or partially protrudes.

[0033] The arrival of the piston deeper in the reservoir than when it was positioned at the inlet of the reservoir can be obtained by pressing, with a part of the tool while maintaining the suction or depression or vacuum, on the piston.

[0034] When the piston arrives deeper in the tank than when it was positioned at the inlet of the tank, the piston may have passed beyond the gas passage zone and so that the gas can no longer pass between the piston and the walls.

[0035] The piston may include a lip arranged to ensure a seal against the gas and / or fluid to be distributed between the piston and the walls outside the area.

[0036] The piston may include another lip, the two lips being oriented towards the inlet of the reservoir through which the piston was inserted into the reservoir.

[0037] The inlet of the reservoir through which the piston was inserted into the reservoir can, after insertion of the piston into the reservoir, be hidden by a cover.

[0038] The cover can be disposed at the inlet of the tank simultaneously with the insertion of the piston into the tank, a part of the piston receiving this cover by passing through a hole formed in the cover preferably so that this part of the piston is clamped in this hole and thus carries the cover.

[0039] According to yet another aspect of the invention, a product dispensing device is proposed comprising a reservoir and a piston, the reservoir being arranged to have a variable volume by movement of the piston within walls which, together with the piston, at least partially delimit the internal volume of the reservoir, said device comprising several positions of the piston within the walls, including: - An inlet position at the reservoir inlet, the piston's inlet position allowing for a gas passage zone between the piston and the walls, - a deep position which is positioned deeper in the tank than when the piston is positioned in its tank entry position.

[0040] The passage zone can be formed:

[0041] By an exhaust element formed in the walls on the side of the piston and each exhaust element is formed on the walls only on a limited area of ​​the walls so that this limitation of the limited area limits the extent of the air passage area.

[0042] According to yet another aspect of the invention, a product dispensing device is proposed comprising:

[0043] a pouch connected to a reservoir,

[0044] an exit,

[0045] a distribution valve which, in an open state, allows fluid to pass from inside the bag or reservoir to the outlet, and, in a closed state, does not allow fluid to pass from inside the bag or reservoir to the outlet.

[0046] a supply valve which, in an open state, allows fluid to pass from the reservoir into the inside of the bag, and, in a closed state, does not allow fluid to pass from the reservoir into the inside of the bag

[0047] The device comprises a valve arranged to press against a nozzle surrounding the outlet so as to block the outlet. The valve comprises a first part equipped with a movable nipple by means of a hinge relative to a second part that is fixed relative to the nozzle or that can only be translated relative to the nozzle. The second part is equipped with a housing or a spout oriented towards the outlet of the nozzle, arranged respectively to fit into a spout or a housing of the nozzle.

[0048] The device according to the invention may include means arranged to, when the piston has reached its deep position ensuring a seal to the product between the piston and the walls, prevent or limit the return of the piston 52 to the non-sealing zone.

[0049] Preferably the device is arranged to prevent the piston from returning to the non-sealing zone under a depression of 0.8 bar relative to atmospheric pressure. Description of the figures and methods of implementation

[0050] Other advantages and features of the invention will become apparent upon reading the detailed description of implementations and embodiments, which are by no means limiting, and the following accompanying drawings:

[0051] [Fig-1] [Fig. 1] is a cross-sectional profile view of a first embodiment of the device according to the invention assembled,

[0052] [Fig.2] [Fig.2] is a cross-sectional profile view of the first embodiment of the device according to the invention during assembly according to a first embodiment of the filling process according to the invention,

[0053] [Fig.3] [Fig.3] is a cross-sectional profile view of the first embodiment of the device according to the invention during assembly according to the first embodiment of the filling process according to the invention,

[0054] [Fig.4] [Fig.4] a detailed perspective view of the cap of a second embodiment of the device according to the invention, which is the preferred embodiment of the invention,

[0055] [Fig.5] [Fig.5] is a cross-sectional profile view of the second embodiment of the device according to the invention during assembly according to a second embodiment of the filling process according to the invention,

[0056] [Fig.6] [Fig.6] is a cross-sectional profile view of the second embodiment of the device according to the invention during assembly according to the second embodiment of the filling process according to the invention,

[0057] [Fig.7] [Fig.7] is a cross-sectional profile view of the second embodiment of the device according to the invention during assembly according to the second embodiment of the filling process according to the invention,

[0058] [Fig.8] [Fig.8] is a cross-sectional profile view of a third embodiment of the device according to the invention assembled,

[0059] [Fig.9] [Fig.9] is a cross-sectional profile view of a fourth embodiment of the device according to the assembled invention,

[0060] [Fig. 10] [Fig. 10] is a cross-sectional profile view of the fourth embodiment of the device according to the invention during assembly according to the first embodiment of the filling process according to the invention,

[0061] [Fig. 11] [Fig. 11] is a cross-sectional profile view of the fourth embodiment of the device according to the invention during assembly according to the second embodiment of the filling process according to the invention,

[0062] [Fig. 12] [Fig. 12] is a cross-sectional profile view of the first embodiment of the device according to the invention being filled with a cane through orifice 13,

[0063] [Fig. 13] [Fig. 13] is a front view of the first embodiment of the device according to the invention being filled with a cane through orifice 13,

[0064] [Fig. 14] [Fig. 14] is a perspective view of a fifth embodiment of the device according to the invention being filled with a cane through vent 133,

[0065] [Fig. 15] [Fig. 15] is a front view of the fifth embodiment of the device according to the invention being filled with a cane through the vent 133,

[0066] [Fig. 16a] [Fig. 16a] is a front view of the preceding devices according to the invention when the plug is separated from the outlet,

[0067] [Fig. 16b] [Fig. 16b] is a front view of the preceding devices according to the invention when the stopper is separated from the outlet and without the pouch,

[0068] [Fig. 16c] [Fig. 16c] is a zoom of figures 16a and 16b at the level of the stopper,

[0069] [Fig. 17] [Fig. 17] is a cross-sectional profile view of a tank in a variant of previous devices according to the invention,

[0070] [Fig.18a] [Fig.18a] is a perspective view of a piston without an escape mechanism according to the invention,

[0071] [Fig. 18b] [Fig. 18b] is a perspective view of a piston with a microstructure according to the invention,

[0072] [Fig.18c] [Fig.18c] is a perspective view of a piston with hollows or reliefs according to the invention,

[0073] [Fig. 19] [Fig. 19] is a cross-sectional profile view of the piston positioned at the inlet of the reservoir according to the invention,

[0074] [Fig. 20] [Fig. 20] is a profile cross-sectional view of the tank with a tool evacuation system according to the invention,

[0075] [Fig. 21] [Fig. 21] is a cross-sectional profile view of the tank with a piston inserted according to the invention,

[0076] [Fig. 22] [Fig. 22] is a cross-sectional profile view of the reservoir with a piston equipped of a second lip according to the invention,

[0077] [Fig. 23a] [Fig. 23a] is a cross-sectional view of the reservoir equipped with hollows or reliefs according to the invention,

[0078] [Fig.23b] [Fig.23b] is a cross-sectional view of the non-circular tank and of the piston according to the invention,

[0079] [Fig.24] [Fig.24] is a cross-sectional profile view of a device 106 with a flap inserted according to the invention,

[0080] [Fig.25] [Fig.25] is a cross-sectional profile view of the device 106 with the flap dislocated according to the invention,

[0081] [Fig. 26] [Fig. 26] is a flat cross-sectional view of device 106 according to another according to the invention,

[0082] [Fig.27] [Fig.27] is a perspective view of piston 52 illustrating a first variant of the middle 44 of the piston 52,

[0083] [Fig.28] [Fig.28] is a perspective view illustrating a first variant of average 44 of the lid 66,

[0084] [Fig.29] [Fig.29] is a side cross-sectional view illustrating the first variant of means 44 of the piston and the cover arranged so that, when the piston 52 has reached the sealing zone which is deeper than the zone 65 towards the pocket 2, the return of the piston 52 into the non-sealing zone 65 of the piston 52,

[0085] [Fig.30] [Fig.30] is a side cross-sectional view illustrating the first variant of means 44,

[0086] [Fig. 31] [Fig. 31] is a cross-sectional view illustrating a second variant of means 44,

[0087] [Fig.32] [Fig.32] is a side cross-sectional view illustrating the second variant of means 44 arranged to, when the piston 52 has reached the sealing zone which is deeper than the zone 65 towards the pocket 2, prevent the return of the piston 52 into the non-sealing zone 65 of the piston 52,

[0088] [Fig. 33] [Fig. 33] is a side sectional view illustrating part of the device including this second variant of means 44, as well as passage 56,

[0089] [Fig.34] [Fig.34] is a perspective view illustrating a third variant of means 44,

[0090] [Fig. 35] [Fig. 35] is a side section view comprising this third variant of means 44,

[0091] [Fig. 36] [Fig. 36] is a cross-sectional profile view of the third variant illustrating in another plane, the legs 45 of the rod 64,

[0092] [Fig. 37] [Fig. 37] is a side section view of the third variant of means 44 arranged to, when the piston 52 has reached the sealing zone which is deeper than the zone 65 towards the pocket 2, prevent the return of the piston 52 into the non-sealing zone 65 of the piston 52,

[0093] These embodiments being in no way limiting, variants of the invention may be considered, in particular, comprising only a selection of features described or illustrated hereafter, isolated from the other described or illustrated features (even if this selection is isolated within a sentence including these other features), if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the prior art. This selection includes at least one preferably functional feature without structural details, and / or with only a portion of the structural details if this portion alone is sufficient to confer a technical advantage or to differentiate the invention from the prior art.

[0094] We will first describe, with reference to figures 1 to 3, a first embodiment of device 101 according to the invention and its first embodiment of filling process.

[0095] Device 101 comprises: - An opening 10 communicating with the outside of the device 101, - A 23mm cork, - A housing unit with 13 traffic jams.

[0096] The device 101 is arranged to, at least in the absence of the plug 23, evacuate the fluid 7 and / or gas through the plug housing 13 from a pocket 2 or a reservoir 6 of fluid 7 to the orifice 10.

[0097] Fluid 7 is a dispensing fluid, preferably comprising a liquid and / or a gel and / or a cream and / or an oil and / or an emulsion.

[0098] The gas is preferably air.

[0099] The plug housing 13 includes at least one main part 131.

[0100] The plug 23 comprises at least one main part 231.

[0101] The main part 131 of the plug housing 13 is arranged to accommodate the main part 231 of the plug 23, such that: - in a first insertion position (illustrated in [Fig. 3]) of the plug 23 in the plug housing 13 from the orifice 10, fluid 7 and / or gas may escape from the plug housing 13 through the orifice 10 along and / or around the plug 23, and - in a second insertion position (illustrated in [Fig.1]) of the plug 23 in the plug housing 13 from the orifice 10, for which the plug 23 is pushed further into the plug housing 13 than in the first insertion position, fluid 7 and / or gas can no longer escape from the plug housing 13 through the orifice 10 along and / or around the plug 23.

[0102] In this description, all sections are areas defined in cutting planes perpendicular to a direction of insertion of the plug 23 into the housing 13.

[0103] The main part 131 of the stopper housing 13 comprises a large section 141 and a small section 142 smaller than the large section 141, the large section 141 being oriented towards the orifice 10 and the small section 142 being oriented towards the pocket 2 or reservoir 6. Preferably the area of ​​the section 141 is at least 3% larger than the area of ​​the section 142, preferably the sections 141 and 142 are cylindrical and the difference between the average diameter of the sections 141 and 142 is at least 0.1mm.

[0104] The main part 231 of the plug 23 includes a lateral cavity 1 arranged for the passage of fluid 7 and / or gas along and / or around the plug 23 in the first insertion position of the plug 23 and for hermetic storage of fluid 7 and / or gas in the second insertion position of the plug 23.

[0105] The volume of the lateral cavity 1 is preferably greater than 10 microliters, preferably greater than 20 microliters, or even greater than 30 microliters. The The ratio between the volume of the lateral cavity 1 expressed in microlitres and the surface area of ​​the large section 141 expressed in mm2 is preferably greater than 0.4, and even preferably greater than 1.

[0106] The lateral cavity 1 is defined between two sealing rings or grooves 11,12 carried by the main part 231 of the plug 23.

[0107] These two rings 11,12 are separated by a distance d of at least 2 or 3 mm and / or at least one third of the average diameter of the plug 23 and / or the diameter of the opening or the largest dimension of the section (perpendicular to its direction of elongation) of the opening 10.

[0108] Among these two rings or gadroons 11 and 12, the ring or gadroon 12 is arranged to be inserted into the housing 13 before the ring or gadroon 11.

[0109] The plug housing 13 comprises the following two communicating parts: • its main part 131 oriented towards the orifice 10 • a thinned portion 132 oriented towards the pocket 2 or reservoir 6, the portion thinned 132 having a smaller cross-section than the main part 131 of the plug housing 13.

[0110] The plug 23 comprises the following two adjoining parts: • its main part 231 • a finger 232, the finger 232 having a smaller cross-section than the main part 231 of the plug 23.

[0111] The finger 232 of the plug 23 is arranged to fit into the thinned part 132 of the plug housing 13, so that, at least in the first insertion position of the plug 23, the finger 232 expels fluid 7 and / or gas from the thinned part 132 towards the orifice 10.

[0112] Device 101 includes an output 24.

[0113] The device 101 includes a distribution valve 5 which, in an open state, allows fluid 7 to pass from inside the pocket 2 or reservoir 6 to the outlet 24, and, in a closed state, does not allow fluid 7 to pass from inside the pocket 2 or reservoir 6 to the outlet 24.

[0114] In the particular case of device 101, the orifice 10 is provided with the outlet 24 of the device when the plug 23 is in its second insertion position.

[0115] In the particular case of device 101, the main part 231 of the cap 23 carries the distribution valve 5 and / or the main part 131 of the cap housing 13 houses the distribution valve 5.

[0116] The pocket 2 is a deformable pocket having an internal volume arranged to contain the fluid 7.

[0117] The reservoir 6 is arranged to contain fluid 7.

[0118] The reservoir 6 is also flexible and includes a flexible wall 14. Thus, the reservoir 6 is arranged to deform by decreasing its volume as it empties of fluid 7.

[0119] The wall 14 (which forms a pouch) is fixed (preferably welded, for example by thermal or ultrasonic welding) to a nozzle 89 after filling the reservoir 6 with product 7, which leaves gas in the reservoir 6 and / or the pouch 2 just after or during the welding.

[0120] To save time and / or simplify the manufacturing process or device:

[0121] - this fixing or welding can be carried out at the same time as the support on the pocket 2 and / or reservoir 6 (by force 18) so as to reduce its volume and bring fluid 7 and / or gas up from pocket 2 or reservoir 6 towards orifice 10 described below, and / or

[0122] - this fixing or welding can be carried out at the same time, by the same means of welding, on two bags of two dispensing devices according to the invention manufactured in parallel.

[0123] This end piece 89 is the part which includes the housing 13.

[0124] This end piece 89 is the part which includes the bottom wall 21.

[0125] The cap housing 13 includes clipping or snapping means arranged to hold the cap 23 in its first insertion position.

[0126] The device 101 includes a distribution orifice 51 which connects the internal volume of the pocket 2 to the internal volume of a channel (this channel being the housing 13 in the particular case of the device 101):

[0127] - housing valve 5 (as illustrated in [Fig. 1]) and / or is sealed by a operculum removable or removable shutter (case not illustrated), and

[0128] - ending with outlet 24 (which can therefore be blocked by a cover or removable shutter).

[0129] The device 101 includes a feed port 41 which connects the internal volume of the pouch 2 to the internal volume of the reservoir 6.

[0130] The device 101 includes a supply valve 4 which, in an open state, allows fluid 7 to pass from the reservoir 6 into the inside of the bag 2, and, in a closed state, does not (or almost does not) allow fluid 7 to pass from the reservoir 6 into the inside of the bag 2 (preferably, this supply valve 4 is not perfectly sealed and may allow a slight backflow in its closed state.).

[0131] The deformable pocket 2 comprises: - a deformable or movable wall 22 that can be pressed to reduce the internal volume of the pouch, and - a rigid and non-deformable bottom wall 21.

[0132] Pocket 2 is arranged to: - when pressure is applied to wall 22: • decrease the internal volume of pocket 2, • by overpressure, open the distribution valve 5 and / or release fluid 7 from bag 2 towards outlet 24, • In case of overpressure, close the supply valve 4 if present - when pressure is stopped on wall 22: • increase the internal volume of pocket 2 to its maximum equilibrium internal volume in the absence of force exerted on wall 22, • by vacuum, open the supply valve 4 if present and / or draw fluid 7 from the reservoir 6 into the internal volume of the bag 2, • by vacuum, close the distribution valve 5

[0133] The outlet 24 of the device 101 is equipped with a spray nozzle 26.

[0134] This nozzle 26 is carried inside the cap 23.

[0135] Outlet 24 is located in the vertical axis connecting the pouch to the reservoir.

[0136] In other words, the device 101 is arranged so that the fluid 7 exits vertically from the outlet 24.

[0137] In addition, device 101 includes at least one orifice or hole or vent 133 connecting the internal volume of the reservoir 6:

[0138] - either directly to housing 13 and without going through pocket 2,

[0139] - either outside device 101 without passing through housing 13 and without passing through pocket 2.

[0140] Figures 1 to 3 describe the particular case of at least one vent 133 (exactly one for the example in these figures) connecting the internal volume of the reservoir 6 to the housing 13. In this case, the plug 23 includes, for each vent 133, a vent stopper 233 arranged to stop the vent 133 with which it is associated (i.e., not to allow air to pass through this vent 133) when the plug 23 is in the second insertion position of the plug 23 (preferably, each vent stopper 233 is arranged so as not to stop the vent 133 with which it is associated when the plug 23 is in the first insertion position of the plug 23).

[0141] With further reference to Figures 1 to 3, a first embodiment of the filling process for device 101 comprises the following steps: - The pouch 2 and / or the reservoir 6 are filled with fluid 7, while the cap 23 is inserted in its first insertion position in the cap's housing 13 or is not inserted at all into the cap's housing 13 (this filling can be carried out (by a filling tube or needle)). 77 or other) either through a vent 133 connecting the reservoir 6 to the housing 13, or through a vent connecting the reservoir 6 to the outside of the device 101 without passing through the housing 13, or through the housing 13 (more precisely through part 131 and / or 132 of the housing 13) particularly in the absence of vent 133, or before closing or sealing the reservoir 6 and / or before assembling the reservoir 6 to the nozzle 89 or housing 13, then: • The pouch 2 is squeezed to reduce its volume and / or the reservoir 6 is squeezed (in the case of a flexible reservoir, for example in the form of a sachet) to reduce its volume and / or (in the case of the existence of at least one vent 133) the fluid 7 is injected either through a vent 133 connecting the reservoir 6 to the housing 13, or through a vent connecting the reservoir 6 to the outside of the device 101 without passing through the housing 13, or through the housing 13 (more precisely through part 131 and / or 132 of the housing 13) so as to draw fluid 7 and / or gas from the pouch 2 or reservoir 6 up towards the orifice 10, by exerting a direct or indirect force 18 on the pouch 2 or reservoir 6 or a force 18 caused by pressure of the fluid 7 for its injection, and / or • The plug 23 is pushed in or moved into the plug housing 10 so as to move it from its first insertion position to its second insertion position.

[0142] More precisely: • pressure is applied to the pouch 2 in order to reduce its volume and / or pressure is applied to the reservoir 6 (by force 18) in order to reduce its volume and / or (in the case of the existence of at least one vent 133) the fluid 7 is injected either through a vent 133 connecting the reservoir 6 to the housing 13, or through a vent connecting the reservoir 6 to the outside of the device 101 without passing through the housing 13, or through the housing 3 (more precisely through part 131 and / or 132 of the housing 13)

[0143] so as to draw fluid 7 and / or gas from the pouch 2 or reservoir 6 up to the orifice 10, preferably when the plug 23 is not inserted at all into the plug housing 13, • The fluid 7 and / or gas from the previous step (i.e., the support or injection of the previous step) is drawn up until a fluid 7 level is detected in the plug housing 13 by a sensor 9 or visually (the inside of the housing 13 and / or the plug 23 including a level line marking or a visual level indicator), preferably optical or ultrasonic, above a predefined threshold, preferably while the plug 23 is not inserted into the housing 13 of the cap at all; as illustrated in [Fig.2], this threshold is preferably reached when the fluid 7 has completely filled part 132 and begins to fill part 131. In practice, the sensor 9 is arranged to detect this threshold by targeting a surface 15 and detecting a transformation of this initially bare surface 15 which becomes covered with the fluid 7 coming from the pocket 2 or the reservoir 6; the sensor 9 detects the level of fluid 7 through the orifice 10; In another embodiment, the support or injection of the previous step is carried out for a determined time corresponding to a certain quantity of fluid 7 and / or gas rising from the pocket 2 or reservoir 6 towards the orifice 10 (and thus a sensor can be dispensed with); • then the plug 23 is pushed or moved into the housing 13 (by an insertion force 19 of the plug 23) so as to move it from outside the housing 13 to its first insertion position as illustrated in [Fig.3], so that the volume of gas in the housing 13 is replaced by the volume of the plug 23 (more precisely the volume of the part of the plug 23 that enters the plug housing 13) and / or fluid 7 in the housing 13 and escapes from the plug housing 13 through the orifice 10 along and / or around the plug 23, • then, once this threshold is reached and / or detected, we stop pressing on the bag 2 or on the reservoir 6 or we stop the injection of fluid 7, and we push or move the plug 23 into the plug housing 13 (by force 19) so as to move it from its first insertion position to its second insertion position as illustrated in [Fig. 1].

[0144] The passage of the plug 23 from its first insertion position to its second insertion position includes a crossing, by the ring or groove 12, of a step or transition 143 separating the large section 141 from the small section 142. When the ring or groove 12 reaches the level of this step or transition 143, the ring or groove 12 is preferably in contact with the fluid 7.

[0145] It is noted that for the first insertion position and for the second insertion position of the plug 23, the finger 232 is at least partially inserted into the thinned part 132, which allows;

[0146] - a guide for the cap, and

[0147] - a backflow of fluid 7 towards outlet 24 and / or the orifice during the passage of the plug from its first insertion position to its second insertion position.

[0148] For the first insertion position of the plug 23, the finger 232 is partially inserted into the thinned part 132.

[0149] For the second insertion position of the plug 23, the finger 232 is completely inserted into the thinned part 132.

[0150] The sensor 9 is preferably an optical sensor and may include transmitting and receiving optical fibers or even a camera, but can generally use any suitable technical means (LIDAR, ultrasound, etc.).

[0151] In an unshown variant, the bag 2 and / or the reservoir 6 are filled through the orifice 10 from outside the device with filling means so as to bring fluid 7 up towards the orifice 10.

[0152] We will now describe, with reference to Figures 4 to 7, a second embodiment of device 102 according to the invention and its second embodiment of filling process, solely for their differences from the first embodiment of device 101 and process of Figures 1 to 3.

[0153] Device 102 differs from device 101 in that it includes at least one stop 27, 28 on the plug 23 and / or on a wall delimiting the internal volume of the housing 13.

[0154] Typically, device 102 comprises: - a stop 27 (preferably mounted on a wall delimiting the internal volume of the housing 13) arranged to prevent the plug from moving from its first insertion position to its second insertion position as long as the force 19 (directed downwards in [Fig.5]) is not beyond an insertion force threshold, - a stop 28 (preferably carried by the plug 23, as illustrated in [Fig.4]) arranged to prevent the plug 23 from moving from its first insertion position to a position where it is completely out of the housing 13 as long as the force 19 (which this time would be directed upwards in [Fig.5]) is not beyond an extraction force threshold.

[0155] The second embodiment of the filling process according to the invention comprises the following steps: • the plug 23 is inserted into its first insertion position (by force 19), as illustrated in [Fig.5], the plug 23 being prevented from fully entering the housing 13 until its second insertion position by the stop 27 because at this stage the force 19 exerted on the plug 23 is less than the insertion force threshold, • then pressure is applied to the pouch 2 to reduce its volume and / or pressure is applied to the reservoir 6 (by force 18) to reduce its volume and / or (in the case of the existence of at least one vent 133) the fluid 7 is injected either through a vent 133 connecting the reservoir 6 to the housing 13, or through a vent connecting the reservoir 6 to the outside of the device 101 without passing through dwelling 13, or through dwelling 3 (more precisely through part 131 and / or 132 of dwelling 13)

[0156] so as to bring fluid 7 and / or gas from the pouch or reservoir up to the orifice 10, while the plug 23 is inserted in its first insertion position into the plug housing 13, so that the volume of gas in the housing 13 is replaced by the volume of the plug 23 (more precisely the volume of the part of the plug 23 which enters the plug housing 13) and / or fluid 7 in the housing 13 and escapes from the plug housing 13 through the orifice 10 along and / or around the plug 23; the upper end of the plug 23 is detected by the sensor 9 or by sight (the inside of the housing 13 and / or the plug 23 including a marking of a level line or a visual level marker) as being at a level hl as illustrated in [Fig.5]. • The fluid 7 and / or gas from the previous step (i.e., the pressing or injection of the previous step) is drawn up until the level of the plug is detected by the sensor 9 or visually, preferably optically or ultrasonically, above a predefined threshold h2, while the plug 23 is inserted in its first insertion position in the plug's housing 13; as illustrated in [Fig. 6], pressing or injecting causes the fluid 7 to rise in the housing 13, which raises the plug 23 from its level hl to its level h2; the plug 23 is prevented from completely exiting the housing 13 by the stop 28 because the force exerted by the fluid 7 (Archimedes' pressure) on the plug 23 is less than the extraction force threshold, • Then, once the threshold h2 is reached and / or detected, we stop pressing on the bag 2 or the reservoir 6 or we stop the injection of fluid 7, and we push or move the plug 23 into the plug housing 13 (by force 19) so as to move it from its first insertion position to its second insertion position, as illustrated in [Fig.7].

[0157] In this embodiment the sensor is preferably an optical sensor and may include a transmitting fiber and a receiver, the end of the plug 23 which carries the output 24 being placed between the transmitting fiber and the receiver but can generally use any suitable technical means of measuring distance or level (LIDAR, ultrasound, etc.).

[0158] With reference to Figures 12 and 13, the wall 14 (which forms a pouch) is fixed (preferably welded, for example by thermal or ultrasonic welding). During this step, the reservoir 6 is not filled with product. It should be noted that each of the embodiments 101 or 102 described above can, in an implementation of processes according to the invention, include (before and / or during the detection of a fluid level) or a level of cap 23 previously described) filling of the reservoir 6 with fluid 7 via the tube 77 through the housing 13:

[0159] - directly to reservoir 6 (without passing through pocket 2) via at least one vent 133 and / or

[0160] - preferably towards reservoir 6 via pocket 2 (vent 133 being optional).

[0161] We will now describe, with reference to [Fig.8], a third embodiment of device 103 according to the invention and filling method, solely for their differences from the first embodiment of device 101 and method of Figures 1 to 3.

[0162] In this embodiment, parts 132 and 232 are absent.

[0163] Outlet 24 is located laterally with respect to a vertical axis connecting pocket 2 to reservoir 6.

[0164] In other words, the device 103 is arranged so that the fluid 7 exits substantially (within 20 degrees) horizontally from the outlet 24.

[0165] The wall 14 is not flexible and does not form a bag but is a rigid wall in which a piston slides which will decrease the internal volume of the reservoir 6 as the fluid 7 exits the reservoir 6.

[0166] The filling process of device 103 may include the same steps as the first embodiment of the filling process described with reference to Figures 1 to 3.

[0167] However, the sensor 9 detects the fluid level 9 not through the orifice 10, but through the part 89 (also called cap 89 in this embodiment, which forms the internal walls of the housing 13) of the device 103 which is transparent to the radiation used by the sensor 9 so as to make the surface 15 and / or the level 30 of the upper fluid surface 7 visible to the sensor 9. Preferably, within the same device 103, there is a part 89 transparent to the radiation used by the sensor 9 and a surface 15 not transparent to the radiation used by the sensor 9.

[0168] This principle is also applicable to the naked eye and to a part 89 transparent to radiation of 400 to 700 nm wavelength visible to the naked eye and a surface 15 not transparent to radiation of 400 to 700 nm wavelength visible to the naked eye.

[0169] We will now describe, with reference to Figures 9 to 11, a fourth embodiment of device 104 according to the invention and its filling method. Device 104 will be described solely for its differences from the first embodiment of device 101 shown in Figures 1 to 3.

[0170] In this embodiment, parts 132 and 232 are absent.

[0171] Outlet 24 is located laterally with respect to a vertical axis connecting pouch 2 to reservoir 6.

[0172] In other words, the device 104 is arranged so that the fluid 7 exits horizontally from the outlet 24.

[0173] In the particular case of device 104, the orifice 10 is distinct from the outlet 24 of the device.

[0174] In the particular case of device 104, the main part 231 of the cap 23 does not carry and does not house the distribution valve 5.

[0175] The method for filling device 104 may include; - As illustrated in [Fig. 10], the same steps as the first embodiment of the filling process described with reference to Figures 1 to 3; note, - As illustrated in [Fig. 1 1], the same steps as the second embodiment of the filling process described with reference to Figures 4 to 7.

[0176] We will now describe, with reference to Figures 14 and 15, a fifth embodiment of device 105 according to the invention and filling process, solely for their differences from the first embodiment of device 101 and process of Figures 1 to 3.

[0177] In this embodiment 105, the at least one vent 133 comprises several vents 133.

[0178] Each vent 133 connects the internal volume of the reservoir 6 to the outside of the device 101 without passing through the housing 13 and without passing through the pocket 2.

[0179] Each vent 133 is typically formed on a perimeter of the walls 14 delimiting the internal volume of the reservoir 6, and typically corresponds to an unwelded area of ​​two welded films or walls forming a bag.

[0180] On a cross-sectional view passing through the reservoir 6, the pocket 2, the housing 13 and each (or vent) 133, each (or vent) 133 is located on the same side as the housing 13 with respect to the internal volume of the reservoir 6.

[0181] The implementation of the method according to the invention includes (before and / or during the detection of a fluid level or a cap level 23 previously described) filling the reservoir 6 with fluid 7 through the tube 77 via at least one vent 133 connecting the internal volume of the reservoir 6 either directly to the housing 13 and without passing through the pocket 2.

[0182] It is further noted that the fifth embodiment of device 105 includes orifices 42 and 43 on the wall 22, allowing air or gas to pass through these orifices 42, 43 between, on the one hand, the volume delimited inside the wall 22 and, on the other hand, the rest of the pouch 2 or the reservoir 6 during filling from the reservoir 6 by the fluid 7 by means of the rod 77 or by any other method (for example by immersing the wall 22 in the reservoir 6 filled with fluid 7).

[0183] These openings 42, 43 include: - At least one upper opening 42 positioned as high as possible on the wall 22 relative to the position of the wall 22 during filling, preferably positioned on the wall 22 on the side of the plug 23 and / or a vent 133, and - At least one lower orifice 43 preferably positioned on the wall 22 opposite the plug 23 and / or this same vent 133.

[0184] These orifices 42, 43 allow air or gas to be removed (preferably completely) from the internal volume of the wall 22 by expelling this air or gas by a flow (typically of fluid 7) guided from one orifice 43 to another 42, and thus avoids the formation of air or gas bubbles in this internal volume of the wall 22.

[0185] These orifices 42, 43 are also present in the first embodiment of device 101, even though they are not visible in the figures of this embodiment 101 because these figures do not include a front view.

[0186] In all embodiments 101, 102, 103, 104, 105 previously described:

[0187] i) each vent 133 thus allows air to be evacuated during the filling of the reservoir with the fluid 7 and thus prevents an accumulation of air in an area located around and / or above the pouch, when the device according to the invention is oriented with its housing 13 positioned above the pouch 2, and / or

[0188] ii) with reference to [Fig. 16a], the plug 23 and its housing 13 can be separated from the outlet 24 and the valve 5; in other words, fluid can pass from the internal volume of the reservoir 6 to the outlet 24 and / or the valve 5 without passing through the plug 23 and / or the housing 13, and / or

[0189] iii) with reference to [Fig.16b] and 16c, a variant of device 101, 102, 103, 104 or 105 may not include a pouch 2 and / or a valve 5,

[0190] The reservoir 6 is refillable with product 7, the cap 23 being removable from the nozzle 89 by means of screwing means 239. The cap 23 includes a refill valve or a seal 50 (closing the channel 237 which passes through the cap 23) fixed with the closure piece 49 preventing the product from escaping when it is not connected with the connection means 238 of the cap, and / or

[0191] iv)

[0192] With reference to figures 17 to 23b and 27 to 37, a variant of the device 101, 102, 103, 104 or 105 may have its reservoir 6 with a variable volume by movement of a piston 52 inside walls 53 delimiting (at least in part with the piston 52) the internal volume of the reservoir 6.

[0193] Regarding point iv) above, an embodiment of a method for manufacturing a product dispensing device according to the invention may include (possibly in combination with the filling method described above) the following steps: - The piston 52 is placed or inserted in its entry position in the walls 53 at the inlet of the reservoir 6, as illustrated in [Fig. 19], so as to maintain a zone 56 for the passage of gas or air between the piston 52 and the walls 53 by at least one hollow or relief 55 formed in the cover 66 and / or a hollow or relief 54 at the inlet of the reservoir 6 at the level of the bottom 66 fitting and / or the exhaust means 81 formed in the walls 53 on the side of the piston and / or the exhaust means 82 formed in the piston (more precisely at the level of the lower lip 58a) described below. - Next, gas is vented from the reservoir 6 to the outside of the product distribution device through zone 56, as illustrated in [Fig.20]; this venting 67 can be carried out by suction or vacuum or by creating a vacuum (preferably a vacuum of at least 0.5 bar relative to atmospheric pressure) in a space 60 located outside the product distribution device by means of a tool 61. The tool 61 includes a sealing gasket 62 which is positioned, during suction or vacuum or vacuum, on the outer perimeter of the inlet of the reservoir 6 where the piston 52 is flush or partially protrudes. - It should be noted, however, that this suction or depression or vacuum is not always necessary; this evacuation can also be achieved by pressing on the piston 52 to push it inwards towards the reservoir 6 so as to expel the air or gas through the passage zone 56 (therefore without suction 67);

[0194] this gas passage zone 56 can be formed, for example, by at least one exhaust means 81 formed in the walls 53 on the side of the piston 52, such as: - a hollow or relief 581 at least on a part of the walls 53 on the side of the (i.e. oriented towards the) piston 52 (as illustrated in figures 17 and 23a) in contact with the piston, - microstructures 571 (preferably including frosting or microgrooves) (as illustrated in [Fig. 17]) on at least a portion of the walls 53 in contact with the piston, - a non-circular shape 591 of the walls 53 on the side of the piston 52 in a cross-sectional plane to the axis of movement of the piston 52 along the walls 53 as illustrated in figure 23b where an oval shape is noted, - and / or by at least one escape means 82 on at least a part of the piston 52 in contact with the walls 53 more precisely at the level of a lip lower 58a (the lip facing the bottom of the device closest to the inlet of the reservoir 6 through which the piston 52 was inserted into the reservoir 6) as: - a hollow or relief 582 formed in the piston (52) on the side of the walls (53) more precisely formed in at least one lip 58a of the piston 52 (as illustrated in [Fig. 18c]) typically of a size greater than 1mm, - microstructures 572 (preferably comprising a frosting or microgrooves typically smaller than 150 pm) (as illustrated in [Fig. 18b]) formed in at least one lip 58a of the piston 52, - a non-circular shape of a lip 58a of the piston 52 (typically a circularity deviation of more than 300pm),

[0195] then an arrival of the piston 52 (in its deep position) deeper into the reservoir 6 than when it was positioned at the inlet of the reservoir 6, so that at least one lip of the piston 52 has passed beyond the zone 56, as illustrated in [Fig.21], and that the gas can no longer pass between the piston 52 and the walls 53 on at least one lip 58a or 58b, the piston 52 being provided with at least one lip arranged to ensure a seal to the fluid 7 between the piston 52 and the walls 53 outside the zone 56. For this purpose, pressure can be applied (for example with a part 63 of the tool 61 while maintaining suction or depression or vacuum) to a rod 64 integral with a bottom 66 of the piston 52.

[0196] It is noted that in the case of the exhaust means 82, the zone 56 moves with the piston 52 and is therefore never overshot by the piston. Unlike the hollows and relief 54 at the inlet of the reservoir 6, the exhaust means 81 and 82 are arranged so that, by virtue of their size, they allow gas or air to pass between the piston 52 and the walls 53, but so as not to allow fluid 7 to pass, or to allow very little fluid 7 (liquid, gel, cream, etc.) to pass between the piston 52 and the walls 53, at least over a deep area at the end of the piston 52's insertion, so that when the piston 52 is inserted sufficiently into the reservoir 6 until it comes into contact with the fluid 7 to be distributed, at least one junction (at least one lip) between the piston 52 and the walls 53 becomes sealed or almost sealed to the fluid 7.Preferably, the passage zone 56 includes at least one exhaust means 81 formed in the walls 53 on the piston side, and each exhaust element 81 is formed on the walls 53 only within a limited spatial area 65 of the walls 53, such that this limitation of the limited area restricts the spatial extent of the air passage zone 56. In this case, it is preferable that the piston 52 does not include an exhaust means 82, that at least one lip of the piston 52 in contact with the walls 53 of the reservoir 6 is smooth and circular (as illustrated in [Fig. 18a]) and is airtight even beyond the area 65 (towards the pocket 2). By airtightness to gas or air by the piston 52 is meant a seal. at a minimum allowing a leakage of less than 0.05 cm³ / s of air with a pressure difference between the inside of the reservoir and the outside of the device of 0.2 bar at 20°C (with orifice 41 sealed). With the reservoir filled with air or gas, the piston is not airtight in zone 65 but is airtight in a deeper zone than zone 65 towards the pocket 2, thanks to the exhaust means 81 limited in depth within the reservoir 6. Typically, the height 65 of the exhaust means 81 from the reservoir inlet is less than 20 mm, but this height can be greater, for example, if different capacities are desired with the same reservoir height; in this case, only a part of the mold forming the reservoir (the core) is modified.

[0197] With reference to [Fig. 18a], it is noted that the piston comprises, opposite the wall 58a, a wall 58b provided with bumps 57 arranged to guide the piston by forming a passage zone 56. Air and the product can pass between the bumps when the piston 52 is pushed down. In an alternative embodiment not shown, the piston 52 comprises a lower lip 58a and an upper lip 58b that are sealed (i.e., without means of escape 82); in the pushed-down position of the piston, one lip 58a or two lips 58a and 58b may be airtight beyond the zone 65.

[0198] With reference to [Fig.22], in addition to the lower lip 58a, the piston 52 may include another lip 59 which thus improves the seal between the piston 52 and the walls 53. The two lips 58a and 59 are oriented substantially in the same direction, i.e. both towards the bottom of the product distribution device, i.e. both towards the inlet of the reservoir 6 through which the piston 52 was inserted into the reservoir 6.

[0199] The inlet of the reservoir 6 through which the piston 52 was inserted into the reservoir 6 is, after insertion of the piston 52 into the reservoir 6, concealed by a cover 66 (this cover not being airtight, gas-tight, or fluid-tight). This cover 66 can be positioned at the inlet of the reservoir 6 simultaneously with the insertion of the piston 52 into the reservoir 6. For this purpose, the rod 64 can accommodate this cover 66 by passing through a hole (preferably triangular in shape) formed in the cover 66 so that the rod 64 is clamped in this hole and thus supports the cover 66.

[0200] With reference to Figures 27 to 37, each variant of the device 101, 102, 103, 104, or 105 may include means 44 arranged to, when the piston 52 has reached the sealing zone (i.e., the deep position of the plug 52), which is deeper than the zone 65 towards the pocket 2, prevent or limit the return of the piston 52 into the zone 65 (i.e., the inlet position of the plug 52) of non-sealing of the piston 52 under a device depression of 0.4 or even 0.8 bar relative to atmospheric pressure, or at least limit the return of the piston 52 into the non-sealing zone 65, preferably to a height representing less than 30% of the height from zone 65 (height being measured along the axis of the tank) under a depression of 0.8 bar relative to atmospheric pressure.

[0201] Preferably the device is arranged to prevent a return of the piston 52 into the non-sealing zone 65 under a depression of 0.8 bar relative to atmospheric pressure.

[0202] These means 44 can take several forms.

[0203] In a first variant with reference to Figures 27 to 30 or a third variant with reference to Figures 34 to 37, these means 44 comprise: - Legs 45 supported respectively either by the cover 66 (first variant with reference to figures 27 to 30) or by the piston 52 (third variant with reference to figures 34 to 37), and - Walls 46 supported respectively either by the piston 52 (first variant with reference to figures 27 to 30) or by the cover 66 (third variant with reference to figures 34 to 37),

[0204] so that:

[0205] a) preferably, with reference to [Fig. 29] or 36, after insertion of the piston 52 through the inlet of the reservoir 6 but before the piston 52 has reached the (so-called "deep") sealing zone (for the fluid to be distributed 7), which is deeper than the zone 65 towards the pocket 2, the tabs 45 and the walls 46 are concentric with respect to an axis parallel to the direction of insertion of the piston 52 into the reservoir 6, being in contact with and deforming and / or pressing the tabs 45 and / or the walls 46 substantially perpendicular to the axis parallel to the direction of insertion of the piston 52 into the reservoir 6, and

[0206] b) with reference to [Fig.30] or 37, after insertion of the piston 52 through the inlet of the reservoir 6 but after the piston 52 has reached the sealing zone (to the fluid to be distributed 7) which is deeper than the zone 65 towards the pocket 2, the tabs 45 and the walls 46 face each other along an axis parallel to the direction of insertion of the piston 52 into the reservoir 6 so that they lock in such a way as to prevent a return of the piston 52 into the non-sealing zone 65 (to the fluid to be distributed 7). It is noted that, in the third variant of figures 34 to 37, the rod 64 carries a surface 640, and that the legs 45 and the walls 46 face each other on this surface 640 forming an angle and comprising a part parallel to the direction of insertion of the piston 52 into the reservoir 6 and a part perpendicular or oblique (but not parallel) to the direction of insertion of the piston 52 into the reservoir 6.

[0207] The characteristics of a) are not mandatory, in particular when the cover 66 is positioned after the piston 52 has reached the sealing area (for the fluid to be distributed 7) which is deeper than the area 65.

[0208] The cover 66 is preferably held (for example by clipping or snapping) to the reservoir 6.

[0209] In a second variant, with reference to Figures 31 to 33, means 44 comprise: - The lip 58a carried by the piston 52, and - Overthicknesses 47 formed on the walls 53.

[0210] The 47 overthicknesses are arranged to:

[0211] a) preferably, with reference to Figures 32 and 33, after insertion of the piston 52 through the inlet of the reservoir 6 but before the piston 52 has reached the sealing zone (called "deep") which is deeper than the zone 65 towards the pocket 2, to separate the lip 58a from the walls 53 so as to create an air passage 56 between the lip 58a and the walls 53, and

[0212] b) with reference to [Fig.34], after insertion of the piston 52 through the inlet of the reservoir 6 but after the piston 52 has reached the sealing zone (to the fluid to be distributed 7) which is deeper than the zone 65 towards the pocket 2, form a stop for the lip 58a so that the lip 58a and the overthicknesses 47 face each other along an axis parallel to the direction of insertion of the piston 52 into the reservoir 6 so that they lock in such a way as to prevent a return of the piston 52 into the non-sealing zone 65 (to the fluid to be distributed 7).

[0213] We will now describe, with reference to Figures 24 to 26, a sixth embodiment of device 106 according to the invention solely for their differences from the first embodiment of device 101 and method of Figures 1 to 3.

[0214] In this embodiment, the device comprises a valve 70 arranged to bear against the nozzle 89 surrounding and comprising the outlet 24 so as to seal the outlet 24 in a gas-tight or non-gas-tight manner. The valve 70 comprises a first part 74 provided with a nipple 72 movable by means of a hinge 73 relative to a second part 73 fixed relative to the nozzle 89 or at least capable of only translating relative to the nozzle 89. The second part 73 is provided with a housing or a spout 75 oriented towards the outlet 24 of the nozzle 89 arranged to fit together with a spout or a housing 76 of the nozzle 89, respectively. Preferably, the housing is formed in the nozzle 89 and the spout is formed on the part 73.

[0215] In a fixed version, the part 73 is fixed relative to the nozzle 89, the device is arranged to allow gas from the pouch 2 to pass out of the device (but not from the product) through a non-sealing fit of the nozzle 75 and the housing 76.

[0216] In a mobile version, part 73 can translate relative to the tip; part 73 comprises two positions:

[0217] -an open position allowing gas to pass from the pocket 2 to the outside of the device at the joint between the nozzle and the housing and, in a closed position does not allow this, making the closed position completely airtight, the closed position being maintained by clips 78.

[0218] Of course, the invention is not limited to the examples just described and many modifications can be made to these examples without departing from the scope of the invention.

[0219] For example, for all the embodiments described above:

[0220] - it is noted, with reference to [Fig. 10], that the set of embodiments can do without the surface 15; indeed, the sensor 9 can be arranged to visualize and / or monitor the fluid level 7 in the device according to the invention and to track the progression of this level, and / or

[0221] - part 89 can be made transparent to the radiation used by sensor 9 (or the eye) and a surface 15 not transparent to the radiation used by the sensor 9 (or the eye), and a sensor (or the eye) which visualizes the surface 15 through the part 89, and / or

[0222] - part 89 can be made transparent to the radiation used by sensor 9 (or the eye), and a sensor (or the eye) that visualizes the level 30 of fluid 7 through part 89, and / or

[0223] - the large section 142 is not necessarily constant and / or the small section 141 is not not necessarily constant. For example, we can have a large section 142 that is a frustum conic tapering towards the small section 141 and / or a small section 141 that is a frustum conic tapering towards the large section 142. Similarly, the transition 143 does not necessarily include a step, but can be at an angle between the large section 142 and the small section 141 if at least one of these two sections is a frustum conic, or can be perfectly straight without discontinuity if the large section 142 and the small section 141 are both frustum conics with the same apex angle, and / or

[0224] - The distribution valve 5 may be absent, in particular, valve 5 may be replaced by a removable lid or removable shutter, and / or

[0225] - the cap 23 may include a lid or a refill valve 50 (particularly if the device according to the invention forms a refill) or a lid perforator, and / or - The cap 23 can be screwed into the housing 13.

[0226] When the sensor is arranged to see the surface 15 or 30 through the orifice 10 or the outlet 24, the radiation used by the sensor 9 has any frequency which may be in the infrared, visible, ultraviolet, ultrasound, X-ray, etc.

[0227] When the sensor is arranged to see the surface 15 or 30 through the part 89, the radiation used by the sensor 9 typically has a frequency greater than 16,000 Hertz; preferably, the radiation used by the sensor 9 is typically ultrasound (typically having a frequency between 16,000 Hertz and 10,000,000 Hertz) or X-rays (typically having a frequency between 1016 Hz and 1020 Hz).

[0228] Of course, the various features, forms, variants, and embodiments of the invention can be combined with one another in various ways, provided they are not incompatible or mutually exclusive. In particular, all the variants and embodiments described above are combinable with each other.

Claims

[Claim 1] Demands Method for filling a product dispensing device comprising: - An opening (10) communicating with the outside of the device, - A cork (23), - A plug housing (13), the device being arranged to, at least in the absence of the plug, evacuate the fluid and / or gas through the plug housing from a fluid pocket (2) and / or reservoir (6) to the orifice characterized in that: the plug housing (13) includes at least one main part (131), The cap comprises at least one main part (231), the main part of the cap housing being arranged to accommodate the main part of the cap, such that: - in a first insertion position of the plug (23) in the plug housing (13) from the orifice (10), fluid and / or gas may escape from the plug housing (13) through the orifice along and / or around the plug, and - in a second insertion position of the plug (23) in the plug housing (13) from the orifice (10), for which the plug is further inserted or displaced in the plug housing (13) than in the first insertion position, fluid and / or gas can no longer escape from the plug housing (13) through the orifice along and / or around the plug (23) the device comprising the bag (2) and a distribution orifice (51) connecting the internal volume of the bag to the internal volume of a channel the bag (2) being a deformable bag having an internal volume arranged to contain the fluid. in this system: - the pouch (2) and / or the reservoir (6) is filled with fluid while the cap is inserted in its first insertion position in the cap housing (13) or is not inserted into the cap housing at all, and: • Fluid and / or gas is drawn up from the bag or reservoir towards the orifice, preferably by squeezing the bag and / or reservoir to reduce its volume, and / or, • The cap is pushed in or moved within the cap housing (13) so as to move it from its first insertion position to its second insertion position, characterized in that: • Fluid and / or gas is drawn up from the pouch or reservoir towards the orifice (10), • then a level of fluid or of the plug (23) in the plug housing (13) is detected by a sensor (9), preferably optical or ultrasonic, above a predefined threshold, • then the plug (23) is pushed or moved into the plug housing (13) so as to move it from its first insertion position to its second insertion position. • Fluid and / or gas is drawn up from the pouch or reservoir towards the orifice, preferably by pressing on the pouch and / or reservoir to reduce its volume, preferably while the stopper is not inserted into the stopper housing at all. • then a fluid level is detected in the stopper housing by a sensor (9), preferably optical or ultrasonic, above a predefined threshold, preferably when the stopper (23) is not at all inserted into the stopper housing (13), • then the plug (23) is pushed or moved into the plug housing so as to move it from outside the housing to its first insertion position so that the volume of gas in the housing (13) is replaced by the volume of the plug and / or fluid in the housing and escapes from the plug housing through the orifice along and / or around the plug (23), • then the cap is pushed in or moved into the cap housing (13) so as to move it from its first insertion position to its second insertion position. • Fluid and / or gas is drawn up from the pouch (2) or reservoir (6) towards the orifice (10), preferably by pressing on the pouch and / or reservoir so as to reduce its volume and, while the stopper is inserted in its first insertion position in the stopper housing, so that the volume of gas in the housing (13) is replaced by the volume of the stopper (23) and / or fluid in the housing and escapes from the stopper housing through the orifice along and / or around the stopper, • then a level of the cap is detected by a sensor (9), preferably optical or ultrasonic, above a predefined threshold, while the cap is inserted in its first insertion position in the cap housing • then the cap is pushed in or moved into the cap housing 13) so as to move it from its first insertion position to its second insertion position.

Images