WO2024108282A1

WO2024108282A1 - Fluid transfer device

Info

Publication number: WO2024108282A1
Application number: PCT/BR2023/050389
Authority: WO
Inventors: Rafael JUSTUS; David Baissero; Marcelo Santarelli
Original assignee: Aptar Do Brasil Embalagens Ltda.
Priority date: 2022-11-21
Filing date: 2023-11-14
Publication date: 2024-05-30
Also published as: WO2024108276A1

Abstract

"FLUID TRANSFER DEVICE" discloses a liquid transfer device comprising a first part and a second part, wherein the first part comprises a cylindrical main nozzle and the second part comprises another nozzle, said device comprises a rotation system for closing or opening a passage of viscous liquids, this rotation system is configured by fixing the second part on the first part.

Description

FLUID TRANSFER DEVICE

Field of Application

[001] The present invention falls within the field of application concerning the transfer of fluids in general, more precisely, liquid products for filling empty containers. In particular, the present invention provides a device with a rotation system for refilling an empty container with a fluid or fluent substance, such as liquid detergents, lotions, creams, shampoos, granules, powders, gels and different types of oils. Said rotation system is rotated over the target container to open it and, thus, starts the flow of the source bottle liquid to the target bottle.

Background of the Invention

[002] As it is widely known by the general consumer market, there are several types of containers for storing fluids in general. In particular, there are containers that commonly present a luxurious character due to the aesthetic appeal and often with an aesthetic motif that is relatively difficult to manufacture. In addition, it is also common for said containers to be made of materials such as glass or similar, something that can further increase the cost of the container. Besides, the luxurious character of a container adds value to the content, which is often also costly, and enhances the image and reputation of the product, as it occurs in perfume bottles. Accordingly, the use of a refilling container of less value than the liquid product makes it possible to refill and reuse the container of a luxurious character which, because of its quality, is usually perceived as a non-disposable object.

[003] Furthermore, there is also packaging with the potential to be reusable and also maintain the value of the packaging, avoiding the disposal of the primary packaging, as in the case of liquid soaps, which have a valued packaging, often due to the presence of a pump-type valve, which can be reused after being filled by a refill of another plastic packaging of lower value; it is something that even changes the concept of purchase of the consumer market, as it allows the reuse of durable packaging with different characteristics such as durability and usefulness. More specifically, the said refill has a sachet shape and an extraction nozzle at one of the top ends of this sachet, or, instead of this extraction nozzle, there is only one perforation that must be cut to open the sachet and extract the content thereof. It is something that causes several inconveniences such as always having any scissors around and maybe cutting it wrong and spilling the liquid. This sachet also has no flow control, so part of the product may be left inside it, as well as it does not have any easy closing means.

[004] There is also currently a concern in reusing materials to avoid the use of virgin raw material in the manufacture of products in general. Therefore, there is a demand in ways of reusing a container, in particular containers of liquids that can easily be reused to store another liquid after said container has completely emptied of its original liquid. Thus, one cannot deny the usefulness of decanting a liquid from a relatively basic container into a more expensive one or to address an environmental concern, particularly if the refill can be recycled, or even to address economic concerns.

[005] Viscous liquid containers, such as shampoos and liquid detergents, typically have a main body that stores the liquid with a threaded neck to which a liquid distribution cap is attached. Thus, a simple way to recharge an empty container is simply to remove the top and decant the content of a refill manually, just as in the aforementioned example of liquid soaps with sachet refills. Such packaging may also alternatively use a pump rather than a top.

[006] However, this form of manual refilling has several disadvantages, such as removing the top from the container, as these tops are usually locked in such a way that they are extremely difficult to be removed manually. In addition, often the neck of the container has small size and some manual skill or dexterity is required to transfer liquid from a refill bottle to the target container. Except for highly skilled persons, the usual consequences of such a manner of transfer are the loss of the product contained in the refill, often a costly product, as well as the risk of soiling the user’s clothes or hands. Due to the nature of viscous liquids, in particular cosmetic liquids, if this liquid is spilled, the place where it is spilled is impregnated with a persistent odor and consistency, something that causes great inconvenience.

[007] In this sense, the state of the art provides some solutions to facilitate the transfer of liquids so that a user does not have to do it manually, such as, more specifically, devices in the form of funnels, which are basically conical instruments, terminated by a tube, and mainly used to pour not only liquids but also powders, or pasty substances into a container with a smaller opening.

[008] An example using a funnel for transferring liquids is disclosed by document JP2004306982, which describes a holding cylindrical part of a refill funnel formed by a rectangular or circular cylindrical shape of the inner circumferential length substantially equal to that of the refill bag and of the length of about 1/3 to 1/4 thereof, and a horizontal annular vent part is provided in a mouth-touch part of a funnel bottom part.

[009] However, the use a funnel still does not change the fact that the entire liquid transfer process remains in a manual way; therefore, the user may still spill liquid during the transfer.

[010] The State of the Art also provides for the use of more complex devices, as exemplified by document FR2867761 , which disclose a device for refilling a container provided with a threaded neck comprising: a) a first container intended to contain a product to be transferred into the second container; b) cooperation means intended to form a connection of said first and second containers; c) means for closing off the second container; and d) means for transferring the product contained in the first container to the second container. This device enables the transfer from a full bottle (refill) to an empty bottle to be filled with the same capacity as the refill.

[01 1] Another example is disclosed by document EP2500277B1 , which deals with a device for refilling a bottle with liquid, which includes a refill containing the liquid and a decanting system, selectively adapted to pass the liquid from the refill to the bottle, the decanting system including: a first part fixed to the refill which has a first liquid passage and a first air passage in communication with the refill; a second part connected to the first part and designed to be fixed to the bottle, the second part including a second liquid passage and a second air passage designed to communicate with the bottle, the first and second parts structured to move together in translation and free to rotate between an open configuration, in which the first and second liquid and air passages are aligned, providing liquid and air passage between the refill and the bottle, and a closed configuration, in which they are not aligned, avoiding the passage of both liquid and air.

[012] However, the devices mentioned by the two documents found in the art allow only the transfer of low viscosity liquids; therefore, they are designed only for cosmetic liquids such as perfumes, and do not allow their use in more viscous or dense cosmetic products, such as shampoos and liquid soaps. In particular, the system disclosed by document EP2500277B1 is designed for liquids, such as a perfume, as described in its specification.

[013] Considering the above, the state of the art would clearly benefit from the introduction of a device with a rotation system that allows the refilling of an empty container with fluid, in particular a liquid product such as liquid detergents, lotions, creams, shampoos, gels, different types of oils, through the transfer of said fluid to the target container, and also with a rotation system for closing the system, which also removes the device. Therefore, the user does not need to make any additional movement to open or close the device.

Description of the Invention

[014] In order to solve the troubles of the state of the art, an object of the present invention is to present a device with a rotation system, wherein said device is fixed in a refill container and, when in use, must be screwed onto the target container.

[015] Another object of the present invention is to provide constructiveness to the device so that it can transfer fluids or fluent substances such as granules or powders in general.

[016] Another object of the present invention is to encourage reuse and sustainability through a system of simple operation and usability.

[017] It is also an object of the invention to provide the user with a refilling experience that is efficient, clean, easy to handle.

[018] Finally, the object of the present invention is to present a device of simple application and use, so that it encourages a user to reuse a container and replenish it with new types of fluids.

Summary of the Invention

[019] In order to achieve said objects, the present invention comprises a new fluid transfer device which provides a facilitated and efficient way of refilling a target container with fluids in general, in particular, liquid products such as liquid detergents, lotions, creams, shampoos, gels, different types of oils, wherein this device avoids all of the problems and inconveniences of the state of the art.

[020] For this purpose, the device comprises:

- a first part, which comprises a fluid passage form;

- a second part, which comprises a way of opening and closing the fluid passage of said first part.

[021] More specifically, the first part comprises a main body with a cylindrical shape and laminar walls, as well as a base with an inner threaded section. This base extends upward to a horizontal narrowing that forms a cylindrical main nozzle, which, in turn, comprises an opening and an internal reservoir. In addition, the main nozzle is surrounded by laminar side walls supported and developed by said base of the first part, more specifically in the portion of the beginning of the narrowing of the base.

[022] The main nozzle also comprises a laminar inner structure in its mouth that supports a closing element, which, in turn, comprises an inlet in its lower portion of larger size.

[023] The second part comprises a cylindrical nozzle with a circular opening in its upper portion, said opening corresponding to the closing element of the first part. The said nozzle is contoured (i.e., surrounded) by a cylindrical base which, in turn, comprises threaded sections in its inner and outer portion.

[024] In this way, the first and second parts of the device of the present invention configure a rotation system through the fitting of both parts, wherein this fitting is carried out through the second part to cover the upper portion of the first part, in particular, the nozzle of the second part covers completely the nozzle of the first part; and the threaded section of the base of the second part is fixed to the side walls supported on the base of the first part.

[025] In addition, to carry out the correct transfer of viscous liquids from a refill container to a target container, the first part is fitted to the refill container mouth through the threaded section of the base of the first part, and the second part is fixed to the target container mouth through the fitting of the inner threaded section of the base of the second part.

[026] This sets up the rotation system, which is rotated on the target container, in which the first and second parts perform an up and down movement, to then open and start the flow of the fluid to the target bottle.

[027] The dispensing of the fluent substance from the refill container into the target container may be accomplished by gravity alone, by pressurizing the refill container, or by a combination of gravity and pressurizing the refill container. It will be understood that the pressurization of the refill container may be performed manually by a user of the present invention or automatically by a machine that compresses the walls of the refill container or otherwise decreases the internal volume of the refill container.

Brief Description of the Drawings

[028] The subject matter of the present invention will be completely clear in its technical aspects from the detailed description that will be made based in the following figures, which refer to:

- Figure 1 shows an exploded perspective view of the fluid transfer device, in order to illustrate both parts comprised by the device of the present invention;

- Figure 2 shows a top view of the first part of the fluid transfer device;

- Figure 3 shows a bottom perspective view of the first part of the fluid transfer device;

- Figure 4 shows a top view of the second part of the fluid transfer device;

- Figure 5 shows a bottom perspective view of the second part of the fluid transfer device;

- Figure 6 shows a cross-sectional front view of the fluid transfer device in a closed configuration, with the first part fitted to the second part;

- Figure 7 shows a cross-sectional front view of the fluid transfer device in an open configuration, with the first part fitted to the second part;

- Figure 8 shows a cross-sectional front view of the transfer device in a closed configuration, taken through the air passage and exchange tube;

- Figure 9 shows a cross-sectional front view of the transfer device in an open configuration, taken through the air passage and exchange tube;

- Figure 10 shows a cross-sectional front view of the fluid transfer device in an open configuration and installed upon a fragmentary portion of a refill container and a fragmentary portion of a target container;

- Figure 11 shows a cross-sectional front view of the fluid transfer device in a closed configuration, and Figure 11 shows the engagement of the reliefs of the first part engaged with the outer threaded section of the second part;

- Figure 12 shows a cross-sectional front view of the fluid transfer device in an open configuration, and Figure 1 1 shows the engagement of the reliefs of the first part engaged with the outer threaded section of the second part; and

- Figure 13 shows a top perspective view of the second part of the fluid transfer device.

Detailed Description

[029] In accordance with the objects mentioned and the figures presented, the present invention refers to a fluid transfer device, as illustrated by Figures 1 to 13, and which comprises a fluid transfer device (1 ), made from thermoplastic material, and which provides a facilitated and efficient way of replenishing a target container with fluids in general, in particular, liquid products such as liquid detergents, lotions, creams, shampoos, gels, different types of oils. While the portions of the containers illustrated have the form of a neck of a rigid or semi-rigid bottle, it will be understood that the device (1 ) may be installed upon or utilized with other types of containers such as flexible pouches, vessels, and other rigid or flexible structures. In the context of the present invention, the term "container", when referring to the refill container or target container, may encompass flexible pouches, vessels, and other rigid or flexible structures, like bottles.

[030] In one aspect of the present invention, the device (1 ) of the present invention comprises:

- a first part (2), which comprises a fluid passage way;

- a second part (3), which comprises a way of opening and closing the fluid passage of the first part (2).

[031] As illustrated by Figures 1 to 4 of the present invention, the first part (2) comprises:

- a main body (21 ) of cylindrical shape and laminar walls;

- a base (22) comprising a product structure (i.e., supporting structure) on its outer portion, a lower contoured flap or plug seal (21 a) and an inner threaded section (22a) or a snap-type fitting section (not illustrated);

- a main nozzle (4), wherein the main body (21 ) comprises side walls (23) supported on the base (22). This base (22) extends upward to a horizontal narrowing, which supports the side walls (23) and configures the cylindrical main nozzle (4), which is contoured or surrounded by the laminar side walls (23). In addition, the inner portion of the base (22) comprises a geometry that narrows and configures the opening of the inner area for passage of liquids from the main nozzle (4).

[032] In a further alternative aspect of the present invention, the side walls (23) comprise at least two hollow sections (23a) and at least two laminar elements (24) of trapezoidal shape with one of their corners rounded, in which each laminar element (24) is located next to each of said hollow sections (23a), which configure rectangular reliefs (25) with rounded corners, as illustrated by Figures 1 and 3. The laminar elements (24) function as a mechanical barrier to halt movement between the first part (2) and the second part (3) when closing the device (1 ). It has been found by the inventors that the laminar elements (24) prevent or minimize the risk of the device (1 ) failing due to over application of torque by a user of the device (1 ). With reference to Figure 2, it can be seen that the laminar elements (24) and the reliefs (25) are located at different angular locations relative to a central axis of the device (1 ). The base (22) further comprises an annular sealing wall (26) that has a tapered upper end and which is located around the main nozzle (4) and around the opening of an air passage and exchange tube (5) (which may also be referred to as a vent tube).

[033] In a further aspect of the present invention, the main nozzle (4) comprises a mouth (41 ) and an internal area for passage of fluids that is configured by the side walls of the cylindrical body of the main nozzle (4). Also, as illustrated by Figure 2 and 3, the main nozzle (4) comprises an inner laminar structure in its mouth that supports a closing element (42), in which this inner structure does not block the mouth (41 ).

[034] In a further aspect of the present invention, the closing element (42) comprises an inlet in its lower portion of larger diameter. In particular, the closing element (42) does not block completely the mouth (41 ).

[035] In another aspect of the present invention, the inner portion of the base (22) also comprises, in addition to the threaded section (22a), a circular fitting for securing any mouth of containers that are fitted to the threaded section (22a), wherein the said circular fitting narrows and configures the opening of the inner reservoir of the main nozzle (4), being the inner area of the first part (2), more specifically in the portion above the threaded section, an air passage and exchange tube (5). As can be seen in FIGS. 2-3, the tube (5) has an elongate, racetrack cross-sectional shape and is spaced laterally from the central axis of the device (1 ) toward the perimeter of the first part (2). Terms such as axially or laterally used throughout this specification are taken relative to the central axis of the device (1 ) which extends through the geometric center of the opening (32) and the main nozzle (4). [036] In a further aspect of the present invention, the second part (3) comprises:

- a main body (30);

- a nozzle (31 ) with an opening (32) in its upper portion;

- a base (33).

[037] Furthermore, the opening (32) corresponds to the closing element (42) of the first part (2). In addition, the nozzle (31 ) comprises a cylindrical main body with an upper portion, which includes the slightly bulging opening (32), and the nozzle (31 ) is surrounded by a cylindrical base (33) with a smaller height and larger diameter. The base (33) comprises an inner threaded section (33a) and an outer threaded section (33b). More specifically, the outer threaded section (33b) extends upward to an upper contouring narrowing (34), which is also present in the inner threaded section (33a) and configures an upper contouring rim (35). In addition, the outer threaded section (33b) also comprises at least two recesses (34a), which are configured to receive and are corresponding to the reliefs (25).

[038] In particular, the outer threaded section (33b) comprises a constructive form to allow the reliefs (25) to slide on said outer threaded section (33b), in order to allow the second part (3) to perform an upward (i.e., axial) movement. This upward movement of the second part (3) would open the main nozzle (4) and, thus, open the passage of fluids from the device (1 ). The base (33) includes an annular sealing wall (36) having a tapered lower end surface and which is configured to seal against the annular sealing wall (26) of the first part (2) with the device (1 ) is in a closed, non-dispensing configuration. The contact of the annular sealing walls (26, 36) of the first part (2) and the second part (3) also seals the opening of the air exchange tube (5) of the first part (2) with the device (1 ) is in a closed, non-dispensing configuration.

[039] In a main aspect of the present invention, the device (1 ) configures a rotation system for safe and leak-free transfer of fluids, in particular, liquid products from a refill container (60) to a target container (50), which are visible in Figure 10 only, through the fitting of the first part (2) with the second part (3), wherein this fitting is performed through the second part (3) covering the upper portion of the first part (2), in particular so that the nozzle (31 ) covers completely the main nozzle (4), this fitting being secured with the fixing of the outer threaded section (33b) in an internal area defined by the side walls (23), so that the rim (35) is flush with the upper portion of the side walls (23). While the term “refill container” is used throughout this specification, it will be understood that this term encompasses any type of container of a fluent substance and need not be limited to a container for refilling purposes per se, and that the term encompasses any type of container that supplies or transfers a fluent substance to a target container.

[040] More specifically, when the rim (35) is flush with the upper portion of the side walls (23), it means that the rotation system of the device (1 ) is in a closed configuration, as illustrated in Figure 2.

[041] After fitting the first part (2) with the second part (3), the device (1 ) can be fitted to the mouth of the refill container (60), which contains the liquid for transfer, and to the mouth of the target container (50), which will be filled with the liquid contained in the refill container (60). To do this, the neck (52) that defines the mouth of the target container (50) is positioned upwards and then screwed via external threads (54) onto the inner threaded section (33a) of the second part (3), so that the opening of the nozzle (31 ) and the main nozzle (4) are positioned downwards. After this attachment to the mouth of the target container (50), the neck (62) which defines the mouth of the refill container (60) is screwed via external threads (64) onto the threaded section (22a) or snap-fit if provided as an alternative means of connection , so that the opening of said mouth of the refill container (60) is pointed downwards and is secured in the circular fitting in such a way as to avoid possible leaks. [042] The refill container (60) is, thus, configured above the target container (50), and the mouths of both containers (50,60) are interconnected through the device (1 ), which remains closed. In the closed configuration of the device (1 ), the rim (35) is flush with the upper portion of the side walls (23) and the opening (32) is completely closed by the closing element (42).

[043] For opening the device (1 ), the second part (3) must be partially unscrewed from the first part (2), via the rotation system or means, so that the opening (32) is above the closing element (42), and the rim (35) is also above (i.e. , axially beyond) the upper portion of the side walls (23). With this, the opening (32) is free to pass the stored liquid, due to the arrangement of the containers described above, in the internal reservoir of the main nozzle (4). Furthermore, this movement is facilitated due to the aforementioned sliding of the reliefs (25) in the outer threaded section (33b) in a camming mechanism.

[044] In this way, to perform the transfer of fluids from a refill container to a target container, the first part (2) is fitted on the refill container mouth and the second part (3) is fixed on the target container mouth, wherein the user rotates the device (1 ), in particular the second part (3) on the target container (50), to then open and start the flow of the fluid to the target container (50).

[045] In this way, the rotation system is configured by fixing the first part (2) on the second part (3), in which said system is opened or closed through the relative rotating movement between the second part (3) and the first part (2), with said relative movement between the second part (3) and the first part (2) starting once the assembly has been fully screwed onto the target container (50). This relative movement would be axially upward, for opening the device (1 ), and an axially downward movement, for closing the device (1 ).

[046] In a main aspect of the present invention, the relative movement between the second part (3) and the first part (2) closes only slightly the device (1 ), wherein the first part (2) and the second part (3) are configured such that said relative movement is initiated once the device (1 ) is fully screwed onto the target container (50) only.

[047] Besides, the device (1 ) is configured so that friction between the first part (2) and the second part (3) is selected so that when coupling the device (1 ) to the target container (50) the opening for the transfer only occurs after complete screwing in said target container (50). More specifically, when the device is being screwed onto the target container (50), the friction between the first part (2) and the second part (3) must be greater than the friction between the second part (3) and the target container; and when it is unscrewed, the friction between the second part (3) and the target container (50) must be less than the friction between the first part (2) and the second part (3).

[048] In addition, during uncoupling, the unscrewing in the target container (50) only occurs after the closing of the device (1 ) for transfer. The static friction between the device (1 ) and the neck of the target container (50) is greater than the static and dynamic friction between the first part (2) and the second part (3) which makes it easier for a user to overcome the static friction of the device (1 ) with the neck of the target container (50) once the device (1 ) is fully closed. This promotes intuitive usability and without the need for the user to follow unintuitive steps to carry out the replenishing.

[049] In a further aspect of the present invention, the device (1 ) comprises a hydraulic brake mechanism or functionality that automatically stops the passage of fluids when the target container (50) is full. More specifically, after the target container (50) is completely filled such that the liquid level of the target container (50) reaches the nozzle (4), the flow of air between the target container (50) and the refill container (60) is interrupted, therefore the air passage through the tube (5) is interrupted, which causes the device (1 ) to automatically interrupt the flow of liquid between the containers (50,60), even if the target container (50) still contains liquid, and without the user needing to close the device (1 ). In other words, the interruption causes no fluent product to be dispensed from the refill container (60) and no air drawn or pulled into the refill container (60) through the tube (5). The inventors have found that the small gap or space between the external surface of the nozzle (4) and the internal diameter of the neck (52) of the target container (50) functions as a sealed container in a state of equilibrium when the liquid column inside of the device (1 ) comes into contact with the dispensed liquid in the target container (50).

[050] The device (1 ) allows the perfect transfer of liquids of different viscosities, such as:

- Just by the action of gravity, with the liquid descending through the main nozzle (4) and the air ascending through the tube (5). This example occurs with low viscosity liquids.

- With the user squeezing (with elastic deformation) the refill container (50), making the liquid to drop faster through the main nozzle (4), and after that, with the refill container (60) returning to its original shape, the passage of liquid through the main nozzle (4) is interrupted while the air is pulled through the tube (5). This example occurs with low viscosity liquids.

- With the user squeezing (with elastic deformation) the refill container (60), making the liquid to drop through the main nozzle (4), and after that, with the refill container (60) returning to its original shape, the passage of liquid is interrupted while the air is pulled by the main nozzle (4) itself. This example occurs with medium/high viscosity liquids.

[051] Furthermore, the nozzle (31 ) comprises at least two lateral longitudinal grooves (6) in its construction that serve for air passage if the diameters of the refill container (60) and the target container (50) are close to each other.

[052] For cases where the device (1 ) presents the tube (5) for the air passage, the passage may be continuous to the bottom of the refill container (60), either by extending the tube (5) or by coupling a pump tube (i.e., dip tube) to the tube (5). This configuration facilitates the entry of air into the refill container (60), since the air does not need to break the surface tension of the liquid present in the refill for the formation of air bubbles that will rise, wherein said pump tube is prolonging and takes the air to the end of the target container (50), in order to avoid problems with the surface tension of the liquid.

[053] In addition, the tube (5) makes gaseous compensation in low viscosity liquids, in which the liquid enters through the main entrance and the air is exchanged by the tube (5). In addition, the hydraulic brake is caused by the liquid reaching the expected level and no longer being able to drop.

[054] In an alternative aspect of the present invention, the tube (5) may be missing from the device (1 ), or in disuse. In this case, the liquid goes down and the air rises through the main nozzle (4), in the air passage area, and the opening (32). The squeezing movement makes the liquid go down and the air go up.

[055] As noted in device (1 ) disclosed herein, it advantageously presents a way of filling a target container (50) with a liquid from a refill container (60) for fluids with different viscosities, with an intuitive usability for the user, without spill in an easy way, which improves the user experience when using a refill, encouraging such practice.

[056] It is to be understood that the present description does not limit the application to the details described herein and that the invention is suitable for other embodiments and can be practiced or performed in a variety of ways, within the scope of the claims. Although specific terms have been used, such terms should be interpreted in a generic and descriptive sense, and not for the purpose of limitation.

Claims

1. A FLUID TRANSFER DEVICE, which presents a fluid transfer device (1 ) comprising a first part (2) for being connected to an opening of a refill container (60) and a second part (3) for being connected to an opening of a target container (50), characterized in that the first part (2) comprises a main nozzle (4) and an air passage and exchange tube (5), wherein the second part (3) comprises a nozzle (31), and the device (1 ) comprises a rotation system for closing or opening a fluid passage, said rotation system configured by fixing the second part (3) on the first part (2), wherein said system performs a relative up-and-down rotating movement between the second part (3) and the first part (2), said relative movement between the second part (3) and the first part (2) being initiated only once the device (1 ) is fully screwed onto a target container (50).

2. A FLUID TRANSFER DEVICE, which presents a fluid transfer device (1 ) comprising a first part (2) for being connected to an opening of a refill container (60) and a second part (3) for being connected to an opening of a target container (50), characterized in that the first part (2) comprises a main nozzle (4) with a mouth (41 ) having a first diameter that supports a closing element (42) having a second diameter smaller than said first diameter and extending axially outwardly beyond said mouth (41), wherein the second part (3) comprises a nozzle (31 ), and the device (1 ) comprises a rotation system for closing or opening a fluid passage, said rotation system configured by fixing the second part (3) on the first part (2), wherein said system performs a relative up- and-down rotating movement between the second part (3) and the first part (2), said relative movement between the second part (3) and the first part (2) being initiated only once the device (1) is fully screwed onto a target container (50).

3. A FLUID TRANSFER DEVICE, which presents a fluid transfer device (1 ) comprising a first part (2) for being connected to an opening of a refill container (60) and a second part (3) for being connected to an opening of a target container (50), characterized in that the first part (2) comprises a main nozzle (4) connected to a base (22) having at least one laminar element (24) extending outwardly axially therefrom and the first part (2) having side walls (23) extending from said base (22) and having at least one relief (25) extending laterally inwardly therefrom, wherein the second part (3) comprises a nozzle (31 ) and a base (33) surrounding said nozzle (31 ), the second part (3) comprises at least one recess (34a) in said base (33) for receiving said at least one relief (25), and said at least one laminar element (24) is located laterally inwardly of said base (33), and the device (1 ) comprises a rotation system for closing or opening a fluid passage, said rotation system configured by fixing the second part (3) on the first part (2), wherein said system performs a relative up-and-down rotating movement between the second part (3) and the first part (2), said relative movement between the second part (3) and the first part (2) being initiated only once the device (1 ) is fully screwed onto a target container (50).

4. The DEVICE (1), according to any one of the preceding claims, characterized in that the first part (2) comprises:

- a main body (21 ) of cylindrical shape and laminar walls;

- a base (22) that comprises a product structure on its outer portion, a lower contoured flap (21 a) and an inner threaded section (22a) or a snap-type fitting section; wherein the main body (21 ) comprises side walls (23) supported on the base (22), said base (22) extends upward to a horizontal narrowing, which supports the side walls (23) and also configures the cylindrical main nozzle (4), which is contoured by the laminar side walls (23), which comprise at least two hollow sections (23a) and at least two laminar elements (24) and of rectangular shape with one of their corners being rounded, each laminar element (24) being packed close to each of said hollowed sections (23a), which configure rectangular and rounded corner reliefs (25).

5. The DEVICE (1), according to any one of the preceding claims, characterized in that the main nozzle (4) comprises a mouth (41 ) and an inner area for passage of liquids, this inner area is configured by the side walls of its cylindrical main body, wherein the main nozzle (4) comprises a laminar internal structure in its mouth that supports a closing element (42), wherein the inner structure does not block the mouth (41 ) and the closing element (42) comprises an inlet in its lower portion of larger diameter.

6. The DEVICE (1), according to any one of the preceding claims, characterized in that the inner portion of the base (22) also comprises a geometry that narrows and configures the opening of the inner area for passage of liquids from the main nozzle (4).

7. The DEVICE (1), according to any one of the preceding claims, characterized in that the second part (3) comprises:

- a main body (30);

- a cylindrical nozzle (31 ) with an opening (32);

- a base (33); wherein the opening (32) corresponds to the closing element (42) of the first part (2), wherein the nozzle (31 ) is contoured by the cylindrical base (33), said base (33) comprises an inner threaded section (33a), which allows to bind the device (1 ) in the target container (50), and an outer threaded section (33b), which extends upward to an upper contouring narrowing (34) that configures an upper contouring rim (35), and the outer threaded section (33b) also comprises at least two recesses (34a), which are corresponding to the reliefs (25).

8. The DEVICE (1), according to any one of the preceding claims, characterized in that, when the device (1 ) is being screwed onto the target container (50), the friction between the first part (2) and the second part (3) must be greater than the friction between the second part (3) and the target container (50); and when the device (1 ) is being unscrewed, the friction between the second part (3) and the target container (50) must be greater than the friction between the first part (2) and the second part (3).

9. The DEVICE (1), according to any one of the preceding claims, characterized in that the nozzle (31 ) comprises at least two lateral longitudinal grooves (6) for air passage.

10. The DEVICE (1), according to any of the preceding claims, characterized in that the device (1 ) comprises a hydraulic brake configuration that automatically stops the passage of fluids when the target container (50) is full.

11. The DEVICE (1), according to claim 1 , characterized in that said tube (5) for the air passage can be continuous to the bottom of the refill container (60), either by extending the tube (5) or by coupling a pump tube to the tube (5).

12. The DEVICE (1), according to claim 1 , characterized in that said tube (5) for the air passage is laterally spaced from a central axis of said device (1 ) and has an elongate cross-sectional shape in a plane normal to said central axis.

13. The DEVICE (1), according to any of the preceding claims, characterized in that said device (1 ) is in combination with a container (50,60) of a fluent substance.

14. The DEVICE (1), according to any of the preceding claims, characterized in that said first part (2) comprises an annular sealing wall (26) and said second part (3) comprises an annular sealing wall (36), wherein in a closed configuration of said device (1 ) said annular sealing walls (26, 36) are engaged to seal an air passage and exchange tube (5) of said first part (2).

15. The DEVICE (1), according to any of the preceding claims, characterized in that said first part (2) comprises a pair of opposing laminar elements (24) extending axially outwardly therefrom and said first part (2) comprises a pair of opposing reliefs (25) extending laterally inwardly therefrom, wherein said laminar elements (24) and said reliefs (25) are located at different angular locations relative to a central axis of the device (1 ).

16. A METHOD OF USING THE FLUID TRANSFER DEVICE (1), according to any of the preceding claims, characterized in that the method includes the steps of: connecting said first part (2) to an opening of a refill container (60); connecting said second part (3) to an opening of a target container (50) wherein said main nozzle (4) of said first part (2) and said nozzle (31 ) of said second part (3) are located within the opening of the target container (50); and rotating said second part (3) relative to said first part (2) to effectuate axial movement therebetween to open the fluid passage of the device (1 ) to permit dispensing of a fluent substance from the refill container (60) into the target container (50).

17. THE METHOD OF USING THE FLUID TRANSFER DEVICE (1), according to claim 16, characterized in that the method includes the further step of: dispensing a fluent substance from the refill container (60) into the target container (50) by gravity alone, by pressurizing the refill container (60), or by a combination of gravity and pressurizing the refill container (60).