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Title:
DISPOSABLE DEVICE FOR PREPARING HOT BEVERAGES
Document Type and Number:
WIPO Patent Application WO/2010/067326
Kind Code:
A1
Abstract:
Disposable device for the extemporaneous preparation of hot beverages by infusion of a product (5) in powder or fragments into hot water comprising a can container (2), a capsule (3) containing the product in powder or fragments slidingly arranged sealed inside the can container (2) and delimiting therein a lower chamber (7) for containing an amount of water corresponding to the dose of beverage to prepare, and an upper chamber (8) for receiving the produced beverage. The device also comprises a first conduit (9) and a second conduit (10) extending from the capsule (3) respectively in the lower chamber (7) and in the upper chamber (8) and provided with flow intercepting means (11) removable from the outside when the beverage has to be prepared.

Inventors:
BALDACCI LAPO (IT)
Application Number:
PCT/IB2009/055662
Publication Date:
June 17, 2010
Filing Date:
December 10, 2009
Export Citation:
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Assignee:
B & B STUDIO DI FRANCESCO BALD (IT)
BALDACCI LAB SPA (IT)
International Classes:
B65D81/34; A47J31/30; A47J36/02; B65D85/804; B65D85/816
Domestic Patent References:
WO2004073468A12004-09-02
Foreign References:
US4167899A1979-09-18
US20050109213A12005-05-26
JPH09322856A1997-12-16
Other References:
None
Attorney, Agent or Firm:
BARDINI, Marco Luigi et al. (Corso dei Tintori 25, Firenze, IT)
Download PDF:
Claims:
CLAIMS

1. Disposable device for the extemporaneous preparation of hot beverages by infusion in hot water of a product (5) in powder or fragments characterized in that it comprises: - a can container (2) comprising a bottom section (2a) and a cap section (2b);

- a capsule containing said product sealingly arranged in said can container (2) and delimiting therein a lower chamber (7) for containing an amount of water corresponding to the dose of beverage to prepare, and an upper chamber (8) for receiving the produced beverage; - a first conduit (9) and a second conduit (10) extending from said capsule (3) respectively in said lower chamber (7) and said upper chamber (8), and provided with flow intercepting means (11) removable from the outside when the beverage has to be prepared.

2. Device according to claim 1 , wherein said flow intercepting means comprise a seal (11) removably placed at the inlet side and/or at the outlet side of said first (9) and second conduit (10) and means (12, 13) for removing said seal (11) are provided operable for the outside to place into communication said lower chamber (7) and said upper chamber (8) with the inner chamber (4) of said capsule (3) at the moment in which the hot beverage has to be prepared. 3. Device according to claim 2, wherein said means for removing said seal (11) comprise respective punches (12, 13), slidable within said first (9) and/or second conduit (10) having a cross section shaped in such a way not to block the liquid flow through said conduits. 4. Device according to claim 3, wherein the punch (12) associated to said first conduit (9) is fixed to the bottom (2a) of said can container (2) and the punch (13) associated to said second conduit (10) comprises push means (17) for axially abutting on said second conduit to cause the assembly (18) formed by second conduit (10), said capsule (3) and said first conduit (9) to slide within said can container (3) toward the bottom (2a) thereof. 5. Device according to anyone of the previous claims, wherein a tubular guide (15) extends from said cap section (2b) in said upper chamber (8), a pushbutton (14) being slidably engaged in said guide (15), the punch (13) associated to said second conduit (10) and said push means (17) being fixed to said pushbutton (14), said pushbutton (14) being movably fixed to said cap section (2b).

6. Device according to claim 5, wherein said pushbutton (14) is engaged in a plate (16) arranged on the cap section (2b) of said can container (2) and is disengageable from said plate following a sliding of said plate along said cap section.

7. Device according to any of the claims 1 to 4, wherein a pushbutton (26) slidable along the wall of said container (2) is housed therein, said pushbutton (26) bearing the punch (13) associated to said second conduit (10) and said push means (17), accessible from the outside following the pull of a tab (27) from said cap section (2b). 8. Device according to claim 1, wherein said first conduit (9) and said second conduit (10) each comprises at least one diametrical hole (64, 68) and are axially engaged within respective sleeves (66, 62) extending from the bottom section (2a) of the container (2) and from a turnable cover (60) of the container (2), said sleeves being formed with at least one diametrical hole (67, 63) to be put into alignment with the corresponding hole formed on said first and second conduit following an angular displacement of said cover (60).

9. Device according to claim 8, wherein said second conduit (10) is formed with a radial rib (65) for abutting, during the angular displacement of said cover (60), with said sleeve (62), whereby a further angular displacement of said cover (60) causes the capsule (3) and said first conduit (9) to rotate so as to put the hole (68) of said first conduit (9) into alignment to the corresponding hole (67) of said sleeve (66) coaxially engaged therewith.

10. Device according to any of the previous claims, wherein said capsule is equipped with a safety valve (19) for putting said lower chamber (7) into communication to said upper chamber (8).

11. Device according to anyone of the previous claims, wherein a vent (21) is formed on said cap section (2b), said vent comprising a seal breakable in case of over pressure in said container (2).

12. Device according to anyone of the previous claims, wherein the bottom section (2a) of said container (2) is formed with an access port (80) with removable plug (81) for filling up water by the user.

13. Device according to any one of the previous claims, further comprising a pot (23) in which said container is housable for heating water contained in said lower chamber

(7).

14. Device according to any one of the previous claims, wherein a thermosensitive paint sensing element (52) changing from a color to another color when the beverage reaches a prefixed level in said upper chamber (8) is arranged on the side surface of said can container (2) close to said cap section (2b).

Description:
TITLE

DISPOSABLE DEVICE FOR PREPARING HOT BEVERAGES

DESCRIPTION Field of the Invention The present invention relates to a disposable device for the extemporaneous preparation of hot beverages through infusion of a product in powder or fragments into boiling water, for example coffee, tea or other products in powder, suitable for preparing infusions.

Background art Canned beverages including tea based beverages have been widespread for a long time, and in more recent times so have coffee based beverages. Of course, tea and coffee based beverages do not have the organoleptic properties and the typical flavours of the corresponding beverages conventionally prepared, both because they are available cold, and due to the way they are prepared, which especially in the case of coffee, is unable to keep the flavour and the aroma of coffee prepared on the spot through a conventional coffee machine or moka machine. On the other side, it is well known how useful it is to have canned beverages, which can be used in any moment or situation, even where a teapot or coffee machine cannot be used.

Objects and Summary of the Invention The object of the present invention is to allow the advantages offered by can containers, such as handiness and immediate availability of beverages, to be exploited without losing the benefits of an extemporaneous preparation of these beverages in a substantially conventional way,.

A particular object of the present invention is to provide a can container for beverages, such as tea or coffee based beverages, that allows the extemporaneous preparation of such beverages.

Another object of the present invention is to provide a disposable can container of the aforementioned type which is cost-effective and easy to use.

A further object of the present invention is to provide a can container of the aforementioned type which has maximum safety of use.

These purposes are achieved with the disposable device for the extemporaneous preparation of hot beverages according to the present invention whose essential features are set forth in claim 1. The disposable device according to the invention comprises a can container and a capsule containing a product in powder or fragments sealingly arranged in the can container and delimiting therein a lower chamber for containing an amount of water corresponding to the dose of beverage to prepare, and an upper chamber for receiving the produced beverage. A first and a second conduit extend from the capsule respectively in the lower chamber and in the upper chamber, and at least the conduit extending in the lower chamber is provided with flow intercepting means removable from the outside when the beverage has to be prepared. Further important characteristics are outlined in the dependent claims.

Brief description of the drawings

The characteristics as well as the advantages of the disposable device for the preparation of hot beverages according to the present invention will be apparent from the following description of its embodiments, given as non-limiting examples purposes with reference to the attached drawings in which: figure 1 a is a sectional view of the disposable device for the extemporaneous preparation of hot beverages according to the present invention, shown in its use condition; figure 1 b shows a partial view of the device of figure 1 a in its sealed condition; figure 1c shows a perspective view of a conduit of the upper chamber and a punching pushbutton; figure 2 shows a sectional view of a variation of the device according to the present invention; - figure 3 shows a section view of another variation of the device of figures

1a, 1 b and 1c; figure 4 shows a section view of a second embodiment of the device according to the present invention; figure 5 shows a partial section view of a third embodiment of the device according to the present invention; figure 6 shows a section view of a fourth embodiment of the device according to the present invention; figure 7 is a perspective view of the inner capsule of the device according to the present invention; figures 8a and 8b are section views of two possible variations of a fifth embodiment of the device according to the present invention; - figure 9 is a perspective view of the device according to the present invention, arranged in a dedicated heating pot; figure 10 is a perspective view from below of the pot of figure 9; figure 11 is a section view of a sixth embodiment of the device according to the present invention; - figure 12 is a variation of the device according to figure 11 ; figure 13 is a section view of a seventh embodiment of the device according to the present invention; figure 14 is a section view of a eighth embodiment of the device according to the present invention, the figures 14a, 14b and 14c showing construction details thereof.

Detailed description of the Invention

With reference to figures 1a and 1b, the disposable device for the extemporaneous preparation of beverages according to the invention, generically indicated with reference numeral 1 , is formed by a can container 2, externally similar to conventional cans for soft drinks, with a bottom 2a and a cap 2b fixed to the upper edge of the container 2 in a conventional way. In particular, in the example illustrated, the bottom 2a is formed by an outer wall 40 forming a single piece with the container 2 and an inner wall 41 that is raised from and fixed to the wall of the container 2, in any known way. A capsule 3 is positioned in the can container 2. The capsule 3 defines an inner chamber 4 containing a product in powder or fragments, possibly closed in a cartridge or a filtering bag, indicated with reference numeral 5. The capsule 3, which in the present embodiment of the invention has a substantially ellipsoidal configuration, is sealingly mounted within the container 2 by means of a perimetrical gasket 6, which still allow.s it to slide axially or to rotate around the axis of the container 2.

The capsule 3 divides the container 2 into two chambers: a lower chamber 7, comprised between the capsule 3 and the inner wall 41 of the bottom 2a of the container 2, and an upper chamber 8, comprised between the capsule 3 and the cap 2b of the container 2. The two chambers are hermetically separated from one another through the capsule 3 and the relative sealing gasket 6.

A first axial conduit 9 extends in the lower chamber 7 from the capsule 3 towards the inner wall 41 of the bottom 2a of the container 2. A second axial conduit 10 extends in the upper chamber 8 from the capsule 3 towards the cap section 2b of the container 2. The two conduits 9 and 10 are closed at their inlet side by means of respective perforable diaphragms 11 , whereby, before use, the lower chamber 7 and the upper chamber 8 do not communicate with the inner chamber 4 of the capsule 3. A first punch 12 extends from the inner wall 41 of the bottom 2a of the container

2 and is axially aligned to the first conduit 9. A second punch 13 extends from the cap 2b of the container 2 and is axially aligned with the second conduit 10. Whereas the first punch 12 is fixed with respect to the bottom 2a of the container 2, the second punch 13 extends from a pushbutton 14 slidingly housed in a tubular guide 15 fixed to the cap section 2b and extending from it inside the upper chamber 8 in axial alignment with the second conduit 10. The unwanted sliding of the pushbutton 14 is prevented by a plate 16 frictionally slidable in a guide 24 formed on the outer face of the cap 2b and engaged in a perimetrical groove 14a of the pushbutton 14. The plate 16 has two holes 16a intersecting each other, one of which has a smaller diameter than that of the pushbutton 14, so that, when the pushbutton is aligned with this hole, the plate is engaged in the groove 14a and the sliding of the pushbutton 14 is prevented. The other hole has a greater diameter, whereby by making the plate 16 slide so that the pushbutton 14 is aligned with this second hole, the pushbutton 14 is free to slide axially. When pushbutton 14 is pressed from outside by an user, its sliding causes the punch 13 to move inside the second conduit 10. When the tip of the punch reaches the diaphragm 11 , it is perforated or in any case removed. The pushbutton 14 also has a push surface 17, which through the effect of its sliding, abuts against the end of the second conduit 10 pushing the assembly 18 formed by the second conduit 10, the capsule 3 and the first conduit 9, integrally connected to one another towards the bottom 2a. The movement of the assembly 18 causes the relative axial sliding between the punch 12 and the first conduit 9, whereby, when the tip of the punch 12 reaches the diaphragm 11 , the latter is perforated or in any case removed from the inlet side of the first conduit 9.

In this way the lower chamber 7 and the upper chamber 8 are placed in communication with the inner chamber 4 of the capsule 3. The section of the punches 12 and 13 is configured so as not to hinder the flow into the conduits 9 and 10. For example, as shown in the figures, the punches 12 and 13 have a substantially cross or star-shaped section.

The use of the device according to the invention is very easy and handy. In one of its possible variants, the lower chamber 7 contains a quantity of water which is sufficient to produce the dose or the doses of beverages corresponding to the quantity of product in powder or fragments arranged in the capsule. By providing heat to the device, in the ways discussed hereafter, the boiling of the water in the lower chamber 7 causes there to be an increase in pressure, whereby the boiling water rises through the first conduit 9. The boiling water reaches the inner chamber 4 and passes through the layer of product in powder or fragments contained in the capsule 3. The infusion thus produced rises through the second conduit 10 and is discharged in the upper chamber 8. To enable the user to realize when the beverage is ready, a bar 52 of thermosensitive paint, for example changing from black colour to red colour, (shown in figures 1 and 9 only) is provided on the container 2 near cap 2b. The change of colour occurs when the liquid beverage reaches a prefixed level in the container.

If the device is intended for preparing a sweet beverage, a layer of a sweetening substance (sugar, saccharin or the like) not shown in the drawings is provided inside the upper chamber 8.

In order to avoid that the pressure in the lower chamber 7 causes an excess sliding of the assembly 18 towards the cap 2b, which would prevent the beverage from coming out from the second conduit 10, said conduit is equipped with outer radial fins 25, as shown in figure 1c, suitable for abutting against the free end of the tubular guide 15 to ensure the communication with the upper chamber 8 through perimeter slits 15a formed on the tubular guide. As an alternative to the radial fins 25, a perimetrical inward projection can be foreseen in the wall of the container 2 against which the gasket 6 abuts, preventing the unwanted sliding of the assembly 18 towards the cap 2a. Such a solution is not shown in the figures as being obvious to a man skilled in the art.

As shown in figure 7, the capsule 3 is provided with a safety valve 19, housed, for example, in a side recess 20 of the capsule 3, suitable for creating an emergency communication between the lower chamber 7 and the upper chamber 8 in the case of accidental blockage of one of the two conduits 9 or 10. In turn, on the cap 2b of the container 2, a small vent 21 is provided, visible in figures 3, 8a and 8b, equipped with a sealing film suitable for easily breaking in the case of an excessive pressure increase inside the upper chamber 8.

Of course the container 2 is sealed in a conventional way with an aluminium film 42 heat-sealed to its upper end, to be torn off at the moment of use of the device to open the container and to be able to access the inside to pour the prepared beverage, through an opening 22 formed on the cap 2b.

The administering of heat for heating the water contained in the lower chamber

7 can occur by directly placing the device 1 onto a heat source, for example, a gas flame or an electric heating plate, or it may be useful and convenient to use a dedicated pot, shown in figure 9 and indicated with reference numeral 23, equipped with an insulating handle 39. The pot 23 can in turn be placed on a heat source or can be equipped with its own internal heat source, such as an electrical resistance, and thus be provided with the necessary connectors for the electric connection to the mains power grid or to an electric circuit of a transport means, for example a motor car.

If the pot 23 is intended for use with a direct flame as its heat source, it can be useful for its bottom to be configured as illustrated in figure 10, so as to convey the flame along the sides of the container through lateral slits 53. This solution is particularly useful when a can container is used with a cap section which can be opened at the bottom as described later on.

In a variation of the disposable device of figures 1a,b,c, shown in figure 2, the punches 12 and 13 can extend for the entire length of the conduits 9 and 10 and the relative removable diaphragms 11 can be positioned at the sections of the first conduit 9 and of the second conduit 10 opening out into the chamber 4 of the capsule 3.

An alternative way of putting the inner chamber 4 of the capsule 3 in communication with the lower chamber 7 and the upper chamber 8 is illustrated in figure 3. In this case, from the inner wall 41 of the bottom 2a and from the cap 2b, two sleeves 30 and 31 provided with slits 30a and 31a extend internally and axially aligned. The first conduit 9, which slidingly engages into the sleeve 30, extends in the lower chamber 7 from the capsule 3, whereas the punch 13, intended to perforate a diaphragm 11 positioned at the outlet of the second conduit 10, as seen in figure 2, slidingly extends in the second conduit 10. By supplying heat from the bottom 2a of the container, the assembly 18 is pushed towards the cap 2b by the pressure which is generated in the lower chamber 7. The sliding continues until the free end of the second conduit 10 goes into abutment against the end of the sleeve 31. In the same way, the sliding of the first conduit 9 into the sleeve 30 frees the slits 30a placing the lower chamber 7 into communication with the inner chamber 4 of the capsule 3 through the first conduit 9. Similarly, the communication between the inner chamber 4 of the capsule 3 and the upper chamber 8 through the second conduit 10 is obtained through the slits 31a of the sleeve 31. Another alternative way of putting the inner chamber 4 of the capsule 3 into communication with the lower chamber 7 and upper chamber 8 of the container 2 is illustrated in figure 4. According to this solution, an inner pushbutton 26 is foreseen that is able to slide by pushing along the inner walls of the container 2 and can be accessed with a finger by removing, in a conventional way, a tab 27 to form an access hole 28 on the cap section 2b to push the pushbutton 26 and to activate the punches 12 and 13 which perforate the diaphragms 11 as previously described. Of course, the pushbutton 26 is provided with the passages 29 to allow the container 2 to be emptied once the beverage has been prepared.

Figure 5 illustrates an embodiment of the disposable device according to the present invention which again foresees that the lower chamber 7 be placed in communication with the inner chamber 4 of the capsule 3 through the effect of the external action of the heating which increases the pressure in the lower chamber 7. In this case, from the inner wall 41 of the bottom 2a of the container 2, a cap section, made from rubber 43 which sealingly engages in the first conduit 9, extends. The cap section 43 is fixed in any way to the inner wall 41. By supplying heat, the pressure which is created in the lower chamber 7 pushes the assembly 18 towards the cap 2b making the capsule 3 slide with its sealing gasket 6 along the wall of the container 2 and separating the cap section made from rubber 43 from the first conduit 9 so as to free the inlet and thus placing the lower chamber 7 in communication with the inner chamber 4 of the capsule 3. The sliding of the assembly 18, as a result of the internal pressure, finishes when the end of the second conduit 10 abuts against the cap 2b of the container 2. In this case a diaphragm 11 on the second conduit 10 and the relative punch 13 extending from the cap 2b can be provided as in the embodiments previously described, or the second conduit 10 may also not be sealed, but in such a case it is suggested to fill the container with inert gas to preserve the aroma of the product, in particular when it is coffee powder. Figure 6 illustrates a further alternative embodiment for placing the chamber 4 of the capsule 3 into communication with the inner chamber 7 and upper chamber 8 of the container. According to this solution the capsule 3 is not intended to slide in the container 2, but rather it is set in rotation to carry out an angular movement of a suitable width by acting on a tumable cover 60 provided with a handle 61 to make the rotation easier. A sleeve 62, coaxial to the second conduit 10, extends from the cover 60 towards the inside of the upper chamber 7. The sleeve 62 is equipped with one or more holes 63 that, after a first angular movement, can be brought into alignment with corresponding holes 64 formed on the second conduit 10. At the base of the second conduit 10 a rib 65 is provided serving as an abutment for the sleeve 62. By continuing the rotation of the cover 60 a corresponding rotation of the capsule 3 is induced. A sleeve 66, coaxially engaged in the first conduit 9, extends from the bottom 2a of the container 2. The first conduit 9 has one or more holes 67 suitable for aligning themselves with corresponding holes 68 formed on the sleeve 66 after the rotation of the capsule 3, thus placing the lower chamber 7 into communication with the inner chamber 4 of the capsule 3. The overall rotation of the cover 30 also aligns one of its holes 68 with a corresponding access hole 69 formed in the cap section 2a of the container 2 through which the produced beverage can finally be poured.

In the embodiments of the invention described above the necessary dose of water is put in the lower chamber 7 of the container 2 at the time of its packaging. In the two embodiments illustrated in figures 8a and 8b however, it is foreseen that the user himself pours the necessary dose of water into the lower chamber 7 through an access port 80 closed by a plug 81. In the embodiment of figure 8a a rubber plug 82 extends from the plug 81 and closes the first conduit 9. Rubber plug 82 is removed when the plug 81 is unscrewed at the moment of use. In the embodiment of figure 8b the first conduit 9 has slits 83 and is closed at the bottom. In both cases the second conduit 10 ends at the top with a cover 84 which abuts against the cap 2b of the container.

Advantageously, as in the example shown in figure 3, the container 2 can be provided with a collar 43 made from insulating material, for example thermoplastic material, which makes it possible to handle the can so as to pour its contents after it has been heated without hands being burnt, in the case in which it is heated without using the dedicated pot.

In another embodiment of the invention, shown in figure 11 , no mobile components are present. The lower chamber 7 and the upper chamber 8 are defined in the container 2 by two glass-shaped members 33 and 34 with respective bottom sections 33a and 34a axially facing against each other an configured to form the capsule 3 delimiting the inner chamber 4. The lower and upper conduits 9 and 10 axially extend from the bottom sections 33a an 34a within chambers 7 and 8. The product in powder or fragments 5 is housed in the chamber 4 and arranged between two filters 35, one of which is clamped between the bottom sections 33a and 34a of the two glass-shaped members 33 and 34. In order to keep inner chamber 4, housing the powder 5, sealed from lower chamber 7 and upper chamber 8, tear-off valves 36 and 37, for example made of an adhesive tin foil attached to the inlet of the conduits 9 and 10. The valves 36 and 37 break at prefixed points when the pressure due to the heat supply increases.

In a variation of the previous embodiment shown in figure 12, the capsule 3, defined by the bottom sections 33a and 34a of the two glass-shaped members 33 and 34, is designed to contain a cartridge or a filtering bag not shown.

In another embodiment shown in figure 13, the capsule 3 delimiting the inner chamber 4 is formed by two plates 38 and 30 with perimetrical flanges and convex in the direction of the respective conduits 9 and 10 extending therefrom. The perimetrical flange of one of the two plates crimps the flange of the other plate and the edges of two filtering elements 35 enclosing the product in powder 5. The crimping flange abuts on a inwardly projecting rib 45 formed on the side wall of the container 2. In the embodiments of figures 11 , 12 and 13 the seal between the lower chamber 7 and the upper chamber 8 is ensured by the forced connection between the side walls of the glass-shaped members 33 and 34, o the flange crimping, and the side wall of the container 2. In this way the use of a rubber seal is avoided, making the device fully recyclable. In a further embodiment of the invention shown in figure 14 the use of a rubber seal between the lower chamber 7 and the upper chamber 8 is made unnecessary. In this solution a glass-shaped member 46 is crimped to the upper edge of the container 2 through a bent-down edge of the cap 2b, which clamps the upper edge of the container 2 and the free edge of the glass-shaped member 46, as shown in the exploded view of figure 14a. The upper chamber 8 therefore is enclosed between the glass-shaped member 46 and the cap 2b of the container 2. The capsule 3 is defined by the convex bottom 46a of the glass-shaped member 46 and by a convex plate 48 coupled to the bottom 46a, the lower conduit 8 extending therefrom. The convex plate 48 is formed with a flange 48a abutting on the convex bottom 46a of the glass-shaped bottom 46 and is fixed thereto by bending a perimetrical flap 46b of the glass-shaped member against said plate, as shown in detail in figures 14b and 14c.

Even it is not shown, it is understood that the embodiments of figures 12, 13 and 14 are equipped with tear-off valves to ensure the separation between the inner chamber 4 and the lower chamber 7 and upper chamber 9 or other equivalent openable blocking means, for example as described for the other embodiments of the invention.

In order to also allow direct use of the product in powder or fragments, instead of having cartridges or bags, in the inner chamber 4 of the capsule 3 a perforated casing can be foreseen, for example a strainer, schematically indicated with reference numeral 44 in some of the figures. Moreover, instead of filtering bags or cartridges, conventional packages which can be perforated can also be arranged in the inner chamber 3 of the capsule 4. In such a case the punches will also be provided with perforating plates suitable for opening the packages at the moment of use. The device according to the invention is particularly suitable for the extemporaneous preparation of coffee, but of course it can also be used for the preparation of any other infusion of vegetable matter available in powder, in fragments, ground or chopped. It allows the purposes of the invention to be fully achieved, being a common can for beverages of a thickness of about 0.1 mm, which in any case comprises everything necessary to prepare a hot beverage without altering the aroma of the product contained, in particular coffee, thanks to the seal 11 or to the presence of inert gas, and without any risks to the user thanks to the safety valve 19 and to the vent 21 which is equipped with.

Further variations and/or modifications can be made to the disposable device for the extemporaneous preparation of hot beverages according to the present invention without departing from the scope of the invention itself as set forth in the attached claims.