Reusable water botttle

Abstract

A system 100 for resealing a beverage container 10 having a lid 101, the lid comprising a top part 150 and a bottom part 120 releasably attachable by threads 260, 270. A support 102 secures the bottom

Description

Reducing product waste has become an area of increased importance and focus in recent years. Although recycling rates have been increasing, many products are still single-use products. For example, the process of converting an old product into a reusable one requires energy and creates pollution. As a result, it may be that in certain instances recycling represents only a minor improvement over the incineration of garbage or landfills. In this regard, it may be desirable to maximise the reusability of the product before being sent for further processing. One such example is a conventional beverage container (e.g., an aluminium or steel drinking can), which is destined for waste after its initial use. Thermos-type containers, where a beverage container may be inserted, are designed to maintain the temperature of the beverage in the container but are not configured for resealing the container, i.e., providing a new sealing mechanism that is not an original component of the beverage container, in a leak-free manner. Replaceable caps, covering a top portion of the beverage container, may be used to reseal a beverage container. However, these caps are not sufficiently well attached to the beverage container and cannot withstand the pressure that may arise in the container, especially when the container is shaken. Such conventional caps easily pop off and lead to the beverage container leaking. The present invention aims to ameliorate these problems by providing a system for beverage containers to maximise their reusability. SUMMARY OF THE INVENTION According to a first aspect of the present invention, there is provided a system for resealing a beverage container, said system comprising: a lid configured to receive a beverage container and engage with an outer surface of said beverage container to secure the lid against the beverage container. The lid comprises a top part and a bottom part, configured to be releasably attached to each other in a threaded connection, such that in a closed state of the lid, the top part of the lid covers an opening at an end surface of the beverage container. The lid further comprises a support configured to secure the bottom part of the lid against the beverage container; and at least one seal configured to be arranged at an inner surface of the lid, such that in a closed state of the lid, the opening of the beverage container is covered by the lid and sealed from the atmosphere. The lid may also be referred to as a replaceable cap or top. In some examples, the lid is configured to receive a beverage container and engage with an outer side surface of the beverage container to secure the lid against the beverage container. Such an outer side surface may be any suitable peripheral external surface of the container, such as an envelope surface of a substantially cylindrically shaped beverage container and / or an outer side surface of a frustoconical, or spherical cap shaped, portion of a beverage container. In some examples, the lid may be configured to rest against the outer side surface of the beverage container along the full circumference of the beverage container. In other examples, the lid may be configured to rest against the outer surface of the beverage container along a portion of the circumference of the beverage container. In some examples, the bottom part of the lid is configured to rest against an outer side surface of the beverage container. In examples where the beverage container is a conventional beverage can of the type commonly used for carbonated beverages, the lid may be configured to extend downward from a top surface of the can, where the opening of the beverage can is arranged, and rest against the outer cylindrical surface along at least a portion of the circumference of the can. Thus, an inner surface of the lid, such as an inner surface of the bottom part of the lid, may be shaped such that it corresponds to the shape of the outer surface of the beverage can. In some examples, the bottom part of the lid comprises a first portion and a second portion. The first and second portion may be shaped as a monolithic piece, for example through additive manufacturing. The first portion may be frustoconical or shaped as a spherical cap, while the second portion is essentially cylindrical. Thereby, the bottom part of the lid may be adapted to conform to the shape of conventional beverage containers, such as beverage cans, such that the first portion may rest against an outside surface of a substantially frustoconical (or spherical cap shaped) top portion of the beverage container while the second portion rests against an outside surface of a cylindrical adjacent portion of the beverage container. In such examples, the first portion of the bottom part of the lid may be said to be arranged at an angle with respect to the second portion of the bottom part of the lid. The threads of the threaded connection on the bottom part of the lid are beneficially arranged on the second portion of the bottom part of the lid. The system as disclosed herein allows for efficiently resealing a beverage container. When used herein, the term resealing, or re-sealing, refers to the process of providing a new sealing mechanism to an opened container, which sealing mechanism is not an original component of the beverage container. For example, a beverage container such as a can containing a beverage is generally sealed with a metal or plastic strip that covers an opening. When opened, such a container has no means for closing the container again in a leak-free manner. Thus, an additional mechanism is needed if a user wants to reseal that container. Thus, resealing refers to sealing a conventional beverage container that does not in itself comprise a sealing mechanism, such as a lid or a detachable and re-attachable cup. The beverage container, when sealed with the system herein, maintains the freshness of the beverage, as well as any carbonation or other fizzincss. The beverage container, resealed using the system as disclosed herein, is both airtight and liquid tight. The configuration of the system, and in particular of the lid, ensures that the resealed container is leak-free, even when the resealed container is subjected to unfavourable conditions, such as being shaken. In addition, the system is configured to be easily closed and reopened. The threaded connection between the parts of the lid allows the lid to be closed and reopened in a secure manner. Furthermore, the system, and the two parts of the lid in particular, is durable due to its configuration, and will not deform, thereby ensuring that the beverage container remains leak-free when resealed. In addition, the system disclosed herein does not include small or otherwise fragile and / or complex components. Thereby, the system is not only durable, but also easy to clean and maintain. The support configured to secure the bottom part of the lid against the beverage container offers additional support compared to caps that pop off under pressure and / or shift due to movement of the beverage container. The seal may seal the lid against a circumferential rim of the end surface of the beverage container and thereby enclose the opening of the beverage container. The seal may be any suitable seal ensuring an airtight seal between the beverage container and the atmosphere. The circumferential rim of the beverage container may be a circumferential rim that protrudes from an upper surface of the beverage container, as is common in conventional beverage can. In such examples, a cavity may be maintained between the top surface of the beverage container and the lid, even when the seal rests against the circumferential rim. Advantageously, the seal may be configured so that it provides two points of contact between the beverage container rim (or surface) and the lid, thereby increasing the liquid and gas tightness of the system. The system may comprise a feedback mechanism, providing an indication to a user that the lid has reached the closed state. The feedback mechanism may be any suitable mechanism capable of communicating to the user that a closed state has been reached, i.e., providing feedback to the user indicating that lid is sufficiently tightened. Conveying to the user that the closed state has been reached is beneficial since it ensures proper handling of the resealable lid and asserts to the user that an air and liquid tight fit has been achieved. In the closed state, pressure loss in the beverage container is prevented. Beneficially, the feedback mechanism also prevents excessive friction between the top and bottom parts of the lid, increasing the technical life span of the screw threads of the threaded connection. In some examples, the feedback mechanism may be a visual alignment guide. In other examples, the feedback mechanism may be created by including a wall in the screw thread, which prevents the screw thread, and thereby the lid, from being tightened past a certain point. Advantageously, the feedback mechanism may be an auditory feature, such as a ’’click" feature where an audible click sound is produced when the lid has reached the closed state. Alternatively or additionally, the feedback mechanism may be a tactile ’’click” where the “click” is felt by the user when the closed state has been reached. Such a click feature may be achieved in any suitable manner. In some examples, the feedback mechanism comprising the click feature is achieved by arranging a protrusion in the screw thread, which creates the sound of a click, or a feeling of a click, when the screw thread has been tightened sufficiently to reach the closed state. The protrusion may also be referred to as a bump, a bulge, a projection, a knob, a hump, a protuberance, etc. The threaded connection may comprise multi-start threads, preferably two-start threads. Multi-start threads, such as two-start threads require less power for tightening and untightening the lid. The two-start thread may also be referred to as a double thread. In the threaded connection, each of the threads is arranged as multi-threads, i.e., the threads arranged on the bottom part and the top part of the lid, respectively, are multi-threads. Thereby, a user-friendly system is achieved, which does not require excessive force from the user. The multi-start thread is beneficially used in combination with a feedback mechanism, such as that described herein, to avoid excess tightening of the lid. The essentially effortless attachment achieved with a threaded connection employing multi-start threads may lead to a novice user being unsure of whether the lid has reached a closed state. In such a scenario, the feedback mechanism complements the multi-start thread by conveying to the user that the system is indeed properly sealed, despite an effortless tightening of the lid. The bottom part of the lid may comprise a first section and a second section, forming a hollow cylinder when connected. Such a configuration provides for a simplified manufacturing process, and decreased manufacturing costs. In such examples, each section may comprise a respective first portion, which is shaped as a truncated cone or dome, and a respective second portion, which is essentially cylindrical. The bottom part of the lid may comprise a cylindrical through-hole. The cylindrical through-hole may be configured to receive the beverage container. This configuration allows for a close fit between the bottom part of the lid and the beverage container in a scenario where the beverage container is cylindrical in shape, which is often the case for beverage containers without resealable lids. Aluminium cans for carbonated drinks, for example, are generally cylindrically shaped. Advantageously the system comprises a pump assembly configured to pressurise air within the beverage container. Such a pump assembly, which may be any suitable pump assembly, is preferably arranged at the top part of the lid. The beverage container in which air is to be pressurised is suitably a thin-walled metal beverage container, such as an aluminium can. The pump assembly may be arranged in the top part of the lid, within the top part of the lid, or in connection with the top part of the lid. The pump assembly may be arranged to be inserted into the top part of the lid. To ensure optimal function, the pump assembly is suitably arranged in fluid connection with the beverage container. The pump assembly may comprise any suitable components. In some embodiments the pump assembly comprises a pump actuator and one or more valves for regulating airflow through the pump button, thereby controlling airflow into and out from the beverage container. In some embodiments, the top part of the lid may comprise an inner cylindrical blind hole comprising threads of the threaded connection arranged at an external surface of the blind hole; and the bottom part of the lid may comprise threads of the threaded connection arranged at an external surface of the bottom part; such that, in use, the top part of the lid may be screwed onto the bottom part of the lid to reach the closed state of the lid. In some embodiments, the support may be a sleeve arranged to be attached to an external surface of the bottom part of the lid, or to an external surface of the beverage container to secure the bottom part of the lid to the beverage container. Thereby the top part of the lid may cover the opening, and the bottom part is firmly attached to the beverage container by means of the support. The sleeve may be made of any suitable material, preferably an elastic, or rubber, material providing a friction grip against the external surface of the bottom part of the lid or the external surface of the beverage container. The seal may be a top part seal configured to be arranged at an inner base of the top part, such that the top part seal makes contact with the circumferential rim of the beverage container in a closed state of the lid. In embodiments where the top part of the lid comprises an inner cylindrical blind hole, the inner base of the top part of the lid may also be described as an inner base, or bottom, of the blind hole. The top part seal may then be arranged to face the circumferential rim of the end surface of the beverage container, and the inner base of the top part of the lid coincides with the inner base of the inner cylindrical blind hole of the top part of the lid, such that when the threaded connection is tightened toward the closed state, the base of the inner cylindrical blind hole covers the end surface of the beverage container and the seal is pressed against the circumferential rim of the beverage container. Thereby, the base of the inner cylindrical blind hole covers the opening of the beverage container, and the seal seals the opening of the beverage container from the atmosphere. In some embodiments, the bottom part of the lid may comprise a male thread, and optionally or preferably, the top part of the lid may comprise a female thread, such that the top part of the lid can be screwed onto the bottom part of the lid. In some embodiments, the bottom part of the lid may be threaded on an inner surface of the cylindrical through-hole. Thereby the top part of the lid may be screwed into the bottom part of the lid. In embodiments of the system where the system comprises a pump assembly, a cavity may be formed between the lid and the beverage container, in a closed state of the lid. The pump assembly may comprise the pump button, acting as a pump actuator that is configured to be inserted into the lid to pressurise air within the cavity; a spring configured to resiliently bias the pump button away from the lid; a first valve configured to attach to a sidewall of the pump button for regulating flow of air between the cavity and the atmosphere; and a second valve configured to attach to a base of the top part of the lid for regulating flow of air between the cavity and the beverage container via an opening in the upper surface of the beverage container; wherein the second valve is configured to open to pressurise air within the beverage container. Such embodiments allow a conventional beverage container to be tightly sealed in a liquid tight as well as airtight manner, by allowing a user to pump air into the container. This provides structural rigidity to a typically thin-walled aluminium or steel can or beverage container by pressurising the air within the container, allowing the normally disposable container to be reused and refilled and / or to be transported without risk of spillage or the like. Moreover, such embodiment ensure that the container is resealed without the carbonation level of the beverage in the container decreasing (i.e., losing its fizziness). When the pump button is inserted into the top part of the lid, an internal air cavity and an external or circumferential air cavity may be formed. The first valve may be in an open position and the second valve may be in a closed position when the pump button is in an idle position; and the first valve may be in a closed position and the second valve may be in an open position when the pump button is pressed. This allows air to be freely exchanged between both cavities, and thus pressuring / filling the internal air cavity with air ready to be pumped into the container. When the user presses the pump button, the first valve closes, such that no air from the internal cavity can escape to the external cavity due to the pressurization of the air within the internal cavity (as a result of decrease in volume of the internal cavity). The pressurisation of the air causes the second valve to open, thus allowing the air from the internal cavity to enter into the container. Simultaneously, air from the outside is able to enter the external cavity to replenish the air delivered into the internal cavity. The system may further comprise a pump button O-ring configured to be attached to a base of the pump button. The pump button O-ring prevents air from being exchanged between the cavities (i.e., creates an airtight seal), apart from at the point of the first valve. When the user releases the pump button, the volume within the internal cavity increases causing depressurization of the remaining air within it. This prompts the second valve to close (i.e., one way valve) to prevent air from the container entering the internal cavity again; and the first valve to open to replenish the lost air within the internal cavity from the external cavity. Thus, the user is able to pump the container as many times as desired until the container is pressurised to the required amount. The pump button may further comprise a plurality of panels extending perpendicularly from an exterior wall of the pump button, and configured to be in contact with an interior wall of the top part of the lid. When the pump button is inserted into the top part of the lid, the panels are in contact with an interior wall of the top part of the lid. This prevents lateral movement of the pump button within the top part of the lid, but at the same time allows the pump button to move freely in the axial direction when the user presses the pump button to pressurise the container. The system may further comprise a pump button retainer configured to be attached to a top of the top part of the lid. Since the pump button is biased to move axially and out of the top part of the lid as a result of the tension in the spring, the pump button retainer holds the pump button within the top part of the lid. In some embodiments, the support may be a base component configured to receive a base portion of the beverage container; and the system may further comprise a plurality of retainer arms hingedly attached to the bottom part of the lid to secure the beverage container between the base component and the bottom part of the lid. Such embodiments encapsulate the whole of the container to allow optimal fitment of the parts on to the container to increase durability. The base component may comprise a circumferential lip. Each retainer arm may comprise a retainer arm lip, such that the retainer arms may be attached to the circumferential lip of the base component. This allows the container to be securely fastened between the base component and the bottom part of the lid. In some embodiments, the bottom part of the lid may comprise a female thread, and optionally or preferably, the top part of the lid may comprise a male thread, such that the top part of the lid can be screwed into the bottom part of the lid. This can happen subsequent to the when the container is securely fastened between the base component and the bottom part of the lid. This design allows the user to easily remove the top part of the lid when the container needs to be replaced / disposed of. In yet another embodiment, the system may further comprise an O-ring configured to be placed between the threads of the top part of the lid and the threads of the bottom part of the lid. This prevents air from the outside and within the container from being exchanged at the point where the threads of the bottom part of the lid and top part of the lid are in contact. In some embodiments, the seal may be a bottom part seal configured to be placed at a base of the bottom part, such that the circumferential rim of the beverage container makes contact with a bottom surface of the bottom part seal. This arrangement prevents the rim of the container from being damaged, especially when encountering forces exerted by a user during pressurisation of the container, in examples where the system comprises a pump assembly. According to a second aspect of the present invention, there is provided a method for resealing a beverage container. The method comprises the steps of: providing a system according to embodiments disclosed herein; arranging the top part of the lid to at least partly surround the beverage container; connecting the top part of the lid with the bottom part of the lid in a threaded connection; and tightening the threaded connection to reach a closed state of the lid, wherein the lid comprising the seal covers the opening of the beverage container and reseals the beverage container. In embodiments where the system comprises a feedback mechanism, and the method may further comprise the step of tightening the threaded connection until the feedback mechanism indicates to the user performing the method that a closed state of the lid has been reached. According to a third aspect of the present invention, there is provided a method of pressurising air within a beverage container. The method comprises the steps of: providing a system according to embodiments disclosed herein; engaging the first valve to isolate air within the cavity from the atmosphere; and depressing the pump button against the spring to pressurise air within the cavity and, via opening of the second valve, air within the beverage container to increase the pressure inside the beverage container to provide increased structural rigidity to the outer surface of the container. The method according to the third aspect is particularly suitable for pressurising air within a thin-walled beverage container, such as a thin-walled metal container such as an aluminium or steel can. Although the disclosure herein is particularly suitable for a beverage container, the system is suitable for use with containers containing any liquid. Thus, the system itself is not affected by the content of the container. The system is, however, particularly suitable for beverages, especially carbonated beverages. BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the invention shall now be described in detail by way of example and with reference to the accompanying drawings in which: Figure la shows a system for resealing a beverage container according to some embodiments / examples. Figure lb shows a top view of a beverage container suitable for use with the system. Figure 2a shows an exploded view of the system according to some embodiments / examples. Figure 2b shows the system according to some embodiments / examples fitted to a beverage container. Figure 3 is a cross-section view of the system fitted to a beverage container according to some embodiments / examples. Figure 4 shows an exploded view of the system according to some embodiments / examples. Figure 5 is a cross-section view of the system fitted to a beverage container according to some embodiments / examples. Figure 6 shows a cross-section view of a top part of the system according to some embodiments / examples. Figure 7a schematically illustrates a method for resealing a beverage container according to some embodiments / examples. Figure 7b schematically illustrates a method of pressurising air within a beverage container according to some embodiments / examples DETAILED DESCRIPTION Figure la schematically illustrates a system 100 for resealing a beverage container 10 according to some embodiments / examples. Figure lb is a top view of a schematically illustrated beverage container 10, suitable for use with the resealing system 100. For intelligibility, the relative dimensions of the components of the system 100 illustrated in the figures herein have been adjusted and do not necessarily reflect the actual spatial relationships between the components of the system, and / or between the system and the beverage container. For example, in Fig. la, the lid 101 appears to cover a large portion of the beverage container 10, which is not a necessary feature of the invention as disclosed herein. In some embodiments of the invention, the lid 101 may indeed cover a significant portion of the beverage container, such that it extends along more than 50 % of the height of the beverage container, as illustrated in Fig. 3. In other embodiments, however, the lid 101 may cover only a smaller portion of the beverage container, such as in the example illustrated in Fig. 6. Any suitable dimensions of the lid 101 are perceivable and remain within the scope of this application. The system comprises a lid 101 configured to receive a beverage container 10 and engage with an outer surface of said beverage container 10 to secure the lid 101 against the beverage container 10. The lid 101 comprises a top part 150 and a bottom part 120, configured to be releasably attached to each other in a threaded connection 260, 270. Fig. la shows the lid 101 in a closed state, where the top part 150 of the lid 101 covers an opening 11 at an end surface 12 of the beverage container 10 (see Fig. lb). The system 100 further comprises a support 102 configured to secure the bottom part 120 of the lid 101 to, and / or against, the beverage container 10, and at least one seal 140, 160, configured to be arranged at an inner surface 101’ of the lid 101, such that in a closed state of the lid 101, the opening 11 of the beverage container 10 is covered by the lid 101 and sealed from the atmosphere. Advantageously, the lid 101 is arranged so that the seal 140, 160 seals the lid 101 against a circumferential rim 13 of the end surface 12 of the beverage container 10 and thereby encloses the opening 11 of the beverage container 10 (see Fig. lb). As shown in Fig. la, the lid 101 covers the end surface 12 of the beverage container 10, and at least partly extends downward along an outer circumferential external side surface 15 of the beverage container. The bottom part 120 of the lid 101 rests against the external circumferential side surface 15 along all, or a portion, of the circumference of the beverage container 10. Thereby, an increased stability in the connection of the lid 101 to the beverage container 10 is achieved, which contributes to keeping the lid 101 in place on the beverage container 10 in a leak-free manner. In some embodiments, the system comprises a feedback mechanism 103, providing an indication to a user that the lid 101 has reached the closed state. Any suitable mechanism that provides feedback to the user as to when the lid 101 is sufficiently tightened may be employed. Conveying to the user that the closed state has been reached is beneficial since it ensures proper handling of the resealable lid 101 and asserts to the user that an air- and liquid tight fit has been achieved. In the closed state, pressure loss in the beverage container 10 is prevented. Beneficially, the feedback mechanism 103 also prevents excessive friction between the top 150 and bottom parts 120 of the lid 101, increasing the technical lifespan of the screw threads of the threaded connection 260, 270. In some examples, the feedback mechanism may be a visual alignment guide. In other examples, the feedback mechanism may be created by including a wall in the screw thread, which prevents the screw thread, and thereby the lid 101, from being tightened past a certain point. Advantageously, the feedback mechanism is an auditory feature, such as a ’’click" feature where an audible click sound is produced when the lid 101 has reached the closed state. Alternatively or additionally, the feedback mechanism may be a tactile click feature so that the “click” is felt by the user when the closed state has been reached. Such a click feature may be achieved in any suitable manner. In some examples, the feedback mechanism comprising the click feature is achieved by arranging a protrusion in the screw thread, which creates the sound of a click, or a feeling of a click, when the screw thread has been tightened sufficiently to reach the closed state. The protrusion may also be referred to as a bump, a bulge, a projection, a knob, a hump, a protuberance, etc. Optimising the shape of the protrusion is important in providing a clear 'click' feeling for the user while also considering factors such as preventing excessive friction between the lid 101 and the protrusion since the excessive friction may induce wear over time. Selecting a suitable position for the 'click' ensures that the beverage container was sealed without an excessive tightening or untightening force. In some examples, a protrusion may be arranged on each of the top part 150 and the bottom part 120 of the lid 101. In use, the protrusion on the top 150 and bottom 120 parts of the lid 101, respectively, slides across the screw threads of the threaded connection 260, 270 of the lid 101 when the lid 101 is tightened. When the protrusion reaches the first gap between the sections of the screw thread, a 'click' feeling and / or sound is created by the protrusion dropping into this gap. Thereby, an increased resistance is achieved if the user tries to tighten the lid 101 any further. Thus the user is alerted to the fact that the lid 101 is sufficiently closed while prevented from overtightening the lid 101. In some embodiments, the threaded connection 260, 270 comprises multi-start threads, preferably two-start threads. Thereby, the lid 101 may be turned half as many (or fewer) times, in order to fully reach the closed state. Advantageously, the respective screw threads of the top part 150 and the bottom part 120 of the lid 101 may be identical, thereby reducing the manufacturing costs as only one mould tool is required to produce both parts. Additionally, or alternatively, the screw thread may be split into sections rather than being one continuous thread profile. The horizontal gap between the inside and outside threads may be adapted to reduce the friction between the screw threads and subsequently, for example by increasing the horizontal gap. Reducing the friction decreases the tightening and untightening force required to seal and unseal the cap. Furthermore, the corner radius of the threads may be adapted, e.g., increased. In addition, the angle of the thread may be adapted, e.g., increased, so that fewer rotations of the lid 101 are required to fully tighten the lid 101. Although illustrated as a single component in Fig. la, the bottom part 120 of the lid 101 may be composed of a plurality of components, such as a first section 120’ and a second section 120” (an example of which is shown in Fig. 2a). In such an example, the components of the bottom part 120 of the lid 101 may beneficially be joined together to form a hollow cylinder when connected. In some embodiments, the bottom part 120 of the lid 101 may comprise a cylindrical through-hole 121 (not shown) configured to receive the beverage container 10. The beverage container 10 used with the system is suitably cylindrically shaped, such as that schematically illustrated in Fig lb. The system shown in Fig. la may advantageously comprise a pump assembly 200, which is configured to pressurise air within the beverage container 10. The system comprising the pump assembly is advantageously used to pressurise the air in a thin-walled beverage container 10 such an aluminium can. The pump assembly 200 may be any suitable pump assembly. The pump assembly may preferably be arranged at the top part 150 of the lid 101. The pump assembly may be arranged in the top part 150 of the lid 101, or within the top part 150 of the lid 101, or in connection with the top part 150 of the lid 101. The pump assembly 200 may be arranged in direct or indirect fluid connection with the beverage container 10. The pump assembly 200 may comprise any suitable components. In some embodiments the pump assembly 200 comprises a pump actuator and one or more valves for regulating air flow through the pump button, thereby controlling airflow into and out from the beverage container. Figure 2a shows an exploded view of the system 100 according to some examples. In Fig. 2a, the top part 150 of the lid 101 comprises an inner cylindrical blind hole 151 comprising threads 260 of the threaded connection 260, 270 arranged at an internal surface of the blind hole 151. The bottom part 120 of the lid 101 comprises threads 270 of the threaded connection 260, 270 arranged at an external surface of the bottom part 120. In use, the top part 150 of the lid 101 can therefore be screwed onto the bottom part 120 of the lid 101, to reach the closed state of the lid 101. As shown in Fig. 2a, the bottom part of the lid 120 may comprise the first section 120’ and the second section 120”. In such examples, each of the first section 120’ and the second section 120” may comprise a first portion 120a and a second portion 120b. The first portion 120a may be frustoconical or shaped as a spherical cap and the second portion 120b may be essentially cylindrical. The threads 270 of the threaded connection 260, 270 are beneficially arranged on the second portion 120b of the bottom part 120 of the lid 101, as shown in Fig. 2a. Figure 2b shows the system 100 according to some embodiments / examples fitted to a beverage container 10. The lid 101 of the system 100 shown in Fig. 2b comprises atop part 150 and a bottom part 120. The system may also comprise a pump assembly 200. As shown in Fig. 2b, the system 100 has been fitted to the beverage container and the top part 150 and the bottom part 120 have been connected so that a closed state of the lid 101 has been reached. The system 100 does not cover or otherwise contact a bottom part 14 of the beverage container. Thereby, a flexible design is achieved, where the system 100 may be fitted to any beverage container 10 regardless of the height of the beverage container 10. In the examples shown in Figs. 2a and 2b, the support 102 is a sleeve arranged to be attached to an external surface of the bottom part 120 of the lid 101 to secure the bottom part 120 of the lid 101 to the beverage container 10. Thereby the top part 150 of the lid 101 may cover the opening 11, and the bottom part 120 is firmly attached to the beverage container 10 by means of the support 102. Although not shown in Figs. 2a and 2b, the sleeve may be arranged to be attached to an external surface of the beverage container 10 to secure the bottom part of the lid to the beverage container. The sleeve may be made of any suitable material, preferably an elastic material providing a friction grip against the external surface of the bottom part 120 of the lid 101 or the external surface of the beverage container 10. Figure 3 is a cross-section view of the system fitted on a beverage container according to some examples. In the example shown in Fig. 3, the seal 160 is a top part seal 160 configured to be arranged at an inner base of the top part 150. When the lid 101 is in a closed state, the top part seal 160 makes contact with the circumferential rim 13 of the beverage container 10. In embodiments such as those illustrated in Fig. 3 where the top part 150 of the lid 101 comprises the blind hole 151, the inner base of the top part 150 of the lid 101 may also be described as the base, or bottom, of the blind hole 151. The top part seal 160 may then be arranged to face the circumferential rim 13 of the end surface 12 of the beverage container 10 and the inner base of the top part 150 of the lid 101 coincides with the base of the inner cylindrical blind hole 151 of the top part 150 of the lid 101. When the threaded connection 260, 270, is tightened toward the closed state, the base of the inner cylindrical blind hole 151 covers the end surface 12 of the beverage container 10 and the seal 160 is pressed against the circumferential rim 13 of the beverage container 10 (see Fig. lb). Thereby, the base of the inner cylindrical blind hole 151 covers the opening and the seal 160 seals the opening 11 of the beverage container 10 from the atmosphere. Conversely, in embodiments where the top part 150 of the lid 101 comprises a through-hole (not shown in Fig. 3), the inner base may be described as a circumferential surface, configured so that a pump assembly 200 (not shown in Fig. 3) may be fitted into the top part 150 of the lid 101 to cover the opening I 1 of the beverage container (see Fig. lb) while the inner base exerts a downward pressure to ensure an intact seal between the top part seal 160 and the circumferential rim 13 of the beverage container 10. When the threaded connection 260, 270, is tightened toward the closed state of the lid 101, the inner base of the top part 150 of the lid 101 covers the end surface 12 of the beverage container 10 and the seal 160 is pressed against the circumferential rim 13. Thereby, the opening 11 of the beverage container 10 is covered by the lid 101 and sealed from the atmosphere by means of the seal 160. In the example illustrated in Fig. 3, the lid is configured to receive the beverage container 10 and engage with an outer side surface 15 of the beverage container 10 to secure the lid 101 against the beverage container 10. Such an outer side surface 15 may be any suitable peripheral external surface of the container 10, such as an envelope surface of a substantially cylindrically shaped beverage container, as in Fig. 3. The lid 101 in Fig. 3 is configured to rest against the outer side surface 15 of the beverage container 10 along the full circumference of the beverage container 10. In other examples, the lid may be configured to rest against the outer surface 15 of the beverage container along a portion of the circumference of the beverage container 10. In Fig. 3, the bottom part 120 of the lid is configured to rest against the outer side surface 15 of the beverage container 10. In examples such as that illustrated in Fig. 3, where the beverage container is a conventional beverage can of the type commonly used for carbonated beverages, the lid 101 is advantageously configured to extend downward from the top surface 13 of the can, where the opening 11 of the beverage can is arranged, and rest against the outer cylindrical surface 15 along at least a portion of the circumference of the can. Thus, an inner surface of the lid 101, such as an inner surface of the bottom part 120 of the lid 101, may be shaped such that it corresponds to the shape of the outer surface 15 of the beverage can, as in the illustrated example. In the illustrated example in Fig. 3, the bottom part 120 of the lid 101 comprises a first portion 120a and a second portion 120b. The first portion 120a and the second portion 20b may be shaped as a monolithic piece, for example through additive manufacturing. The first portion 120a is advantageously substantially frustoconical, as shown in Fig. 3b, while the second portion 120b is substantially cylindrical. The first portion may alternatively be shaped as a spherical cap, i.e., a truncated dome Thereby, the bottom portion 120 of the lid 101 may be adapted to conform to the shape of conventional beverage containers, such as beverage cans, such that the first portion 120a may rest against an outside surface 15 of a substantially frustoconical, or spherical cap shaped, top portion of the beverage can while the second portion rests against an outside surface of a cylindrical adjacent portion of the beverage container 10. In such examples, the first portion 120a of the bottom part 120 of the lid 101 may be said to be arranged at an angle with respect to the second portion 120b of the bottom part 120 of the lid 101. Figure 4 shows an exploded view of a system 100 designed to be fitted around a conventional beverage container. Fig. 4 shows the lid 101 comprising the top part 150 and the bottom part 120, configured to be releasably attached to each other by means of the threaded connection 260, 270. As shown in Fig. 4, the top part 150 comprises threads 260 configured to be connected to the threads 270 arranged on the bottom part 120 of the lid 101. The threads 270 of the bottom part 120 are arranged on an inner surface of the cylindrical through-hole 121. In the example shown in Fig. 4, the support 102 is a base component 110 configured to receive a base portion 14 of the beverage container 10 (not shown in Fig. 4). The example shown in Fig. 4 also comprises a plurality of retainer arms 130 hingedly attached to the bottom part 120 of the lid 101 to secure the beverage container 10 (not shown in Fig. 4) between the base component 110 and the bottom part 120 of the lid 101. The retainer arms 130 may advantageously be hingedly attached to hinges 240 located on either side of the bottom part 120 of the lid 101. In the example shown in Fig. 4, the base component 110 comprises a circumferential lip 250. Each retainer arm comprises a retainer arm lip, such that the retainer arms 130 can be attached to the circumferential lip 250 of the base component 110. In the example shown in Fig. 4, the seal is a bottom part seal 140 configured to be placed at a base of the bottom part 120, such that the circumferential rim 13 of the beverage container 10 (not shown in Fig. 4) makes contact with a bottom surface of the bottom part seal 140. The system 100 shown in Fig. 4 also comprises atop part 150 O-ring 161. In Fig. 4, an example embodiment of the pump assembly 200 is shown, comprising a spring 180, a pump button 190, a first (or pump button) valve 230, a pump button seal (such as an O-ring) 210, and a pump button retainer 220. The components of the system may be made of a plastic material. All the components of the system illustrated herein, apart from the O-rings and springs, can be formed by injection moulding and / or additive manufacturing. Figure 5 shows the system 100 fitted on a beverage container 10, in the example shown as an aluminium can or the like. The retainer arms 130 are hingedly attached to the hinges 240 located on either side of the bottom part 120 of the lid 101. The base component 110 is designed to receive an end section, such as the bottom 14, of the beverage container 10, and further comprises the circumferential lip 250 to which the retainer arm lips 251 of the retainer arms 130 are clipped. The retainer arm lips 251 may be configured as clips. By clipping the lips 251 of the retainer arms 130 to the circumferential lip 250 of the base component 110, the beverage container 10 can securely be placed in between the bottom part 120 of the lid 101 and the base component 110 as shown in Fig. 5. If the user wants to remove the beverage container 10, the lips 251 of the retainer arms 130 are subsequently disengaged from the circumferential lip 250 of the base component 110 to release the beverage container 10. The bottom part seal 140 is configured to sit at near the base of the bottom part 120 of the lid 101 as shown, such that only the circumferential rim 13 of the beverage container 10 makes contact with the bottom surface of the seal 140. This ensures that the circumferential rim 13 of the beverage container 10 does not become damaged. As shown in Fig. 5, a first cavity 310 is formed within the lid 101 and arranged in fluid connection with the beverage container 10, in a closed state of the lid 101. The first cavity 310 may also be referred to as an internal cavity. The pump button 190 is configured to be inserted into the lid 101 to pressurise air within the first cavity 310. Such a configuration may be achieved by designing the pump button 190 with a diameter that is smaller than that of the top part 150 of the lid 101, such that the pump button 190 can be inserted into the top part 150 of the lid 101, as shown in Fig. 5. The pump button 190 and the top part 150 of the lid 101 preferably both have a hollow cylindrical shape. When the pump button 190 is inserted into the top part 150 of the lid 101, the first, or internal, cavity 310 as well as a second cavity 320 are formed. The second cavity 320 may also be referred to as an external or circumferential cavity. The second cavity 320 results from the gap formed between the interior wall of the top part 150 of the lid 101 and the exterior wall of the pump button 190, whereas the first cavity 310 is formed by an internal space within the pump button 190 and the top part 150 of the lid 101. In the example of Fig. 5, the pump button seal 210, which may be an O-ring, is positioned between the two cavities 310, 320, to form an air-tight seal, such that no air is exchanged between the cavities 310, 320 (apart from at the position of a first valve 230, as explained below). Subsequently, the top part 150 of the lid 101 (now containing the pump button 190) can be screwed securely into the bottom part 120 of the lid 101 by the user. This is enabled by male 260 and female 270 threads located, respectively, on or within the top part 150 of the lid 101 and the bottom part 120 of the lid 101, as shown in Fig. 5. The top part O-ring 160 sits in between the top part 150 and the bottom part 120 of the lid 101 and ensures that no air can pass to / from the can 10 and the environment. Furthermore, the spring 180 connects a middle portion of the top part 150 of the lid 101 to a middle portion 300 of the pump button 190, such that the pump button 190 is compressible when pressed from above by a user. The spring 180 is configured to resiliently bias the pump button 190 away from the lid 101. Due to the tension in the spring 180, the pump button 190 is biased to move axially and out of the top part 150 of the lid 101. Figure 6 shows a cross-section view of the top part of the system 100 for resealing a beverage container 10, according to some example embodiments. As shown in Fig. 6, the system 100 comprises a first valve 230, configured to attach to a sidewall of the pump button 190 for regulating flow of air between the first cavity 310 and the atmosphere. The first valve 230 may also be referred to as a pump button valve. In the illustrated embodiment, the system also comprises a second valve 170 configured to attach to a base of the top part 150 of the lid 101, for regulating flow of air between the first cavity 310 and the beverage container 10, via an opening 11 in the upper surface 12 of the beverage container 10 (see Fig. lb). The second valve is configured to open to pressurise air within the beverage container 10. Fig. 6 shows that the pump button valve 230 inserted fully into the wall of the pump button 190. The first valve 230 is in an open position and the second valve 170 is in a closed position when the pump button 190 is in an idle position. Thereby, air from the second cavity 320 can travel into the first cavity 310. The first valve 230 is in a closed position and the second valve 170 is an open position when the pump button 190 is pressed. Thereby, no air from the internal cavity 320 can pass into the beverage container 10. A plurality of panels 280 protrude perpendicularly from the top of an exterior surface of the pump button 190. When the pump button 190 is inserted into the top part 150 of the lid 101, the panels 280 make contact with an interior wall of the top part 150 of the lid 101, such that the pump button 190 is unable to move laterally within the bottom part 120 of the lid 101, but is able to move in the axial direction. In the example of Fig. 6, a pump button retainer 220 is used to contain the pump button 190 within the top part 150 of the lid 101 when in the idle position (not pressed by the user), as demonstrated in Fig. 6. When the user wants to fill the beverage container 10 with air, the pump button 190 is pressed from the top by the user, which decreases the volume inside the first cavity 310 and thus pressurises the air within the first cavity 310. Simultaneously, the first valve 230 is closed such that air from the first cavity 310 cannot escape into the second cavity 320. The pressurization of the air within the first cavity 310 prompts the second valve 170 to open, thus allowing air to travel from the first cavity 310 into the beverage container 10, as a result of the difference in pressure (lower air pressure within of the beverage container 10). Simultaneously, the pressing action replenishes the second cavity 320 with air by allowing air from the environment to enter into the second cavity 320. When the user releases the pump button 190, the volume within the first cavity 310 increases because the pump button 190 is biased to move out of, or away from, the top part 150 of the lid 101 due to the force exerted by the biasing spring 180. The increase in the volume of the first cavity 310 de-pressurises the remaining air within it. This prompts the second valve 170 to close, preventing air within the beverage container 10 (which is now at a higher pressure than in the first cavity 310) from travelling back into the internal cavity 320. Simultaneously, the releasing of the pump button 190 opens the first valve 230, allowing air from the second cavity 320 to travel into the first cavity 310 again, thus replenishing the first cavity 310 for the next pumping cycle. Thus, by repeatedly operating the pump button 190, the beverage container 10 is pressurized to the desired level. This provides structural rigidity to the beverage container 10, which typically is made from a thin sheet or metal such as aluminium or steel and lacks the structural rigidity of thicker walled reusable metal walled beverage containers. When the user wants to drink from the beverage container 10, the top part 150 of the lid 101 (containing the pump button 190) can be unscrewed from the bottom part 120 of the lid 101. As shown in Fig. 6, the bottom part 120 of the lid 101 is configured to receive the beverage container 10 and engage with an outer side surface 15 of the beverage container 10 to secure the lid 101 against the beverage container 10. Such an outer side surface 15 may be any suitable peripheral external surface of the container 10, such as an outer side surface of an essentially frustoconical portion, or spherical cap portion, of the beverage container, as shown in Fig. 6. Figure 7a schematically illustrates a method for resealing a beverage container 10. The method comprises the steps of: providing slOl a system 100 according to any embodiment described herein; arranging si02 the bottom part 120 of the lid 101 to at least partly surround the beverage container 10; connecting sl03 the top part 150 of the lid 101 with the bottom part of the lid 101 in a threaded connection 260, 270; and tightening si04 the threaded connection to reach a closed state of the lid 101. As a result of performing the method according to the steps above, taken in any suitable order, the lid 101 comprising the seal 140, 160, covers the opening of the beverage container 10 and reseals the beverage container 10. As discussed above, the system may advantageously comprise a feedback mechanism 103. In such an example, the method may suitably comprise a step of tightening s 105 the threaded connection 260, 270, until the feedback mechanism 103 indicates to the user that a closed state of the lid 101 has been reached. Figure 7b schematically illustrates a method of pressurising air within a beverage container 10. The method comprises the steps of: providing s201 a system 100 according to any embodiment described herein comprising a pump assembly 200; engaging s202 the first valve 230 to isolate air within the first cavity 310 from the atmosphere; and depressing s203 the pump button 190 against the spring 180 to pressurise air within the first cavity 310 and, via opening of the second valve 170, air within the beverage container 10. Advantageously, the beverage container 10 is a thin-walled beverage container, such as an aluminium can. The user may repeat s204 the step of depressing s203 the pump button 190 against the spring 180 until a desired pressure has been reached in the beverage container. As a result of performing the method according to the steps above, taken in any suitable order, the pressure inside the beverage container 10 increases and, thereby, an increased structural rigidity is provided to the outer surface of the container. The components of the system may be manufactured in a plastic material. All the components of all embodiments described herein, apart from the O-rings, can be formed by injection moulding and / or additive manufacturing. Additive manufacturing of components herein may preferably be performed using an SLA 3D printer. Alternatively, an FDM printer may be used. Advantageously, the print material used in the additive manufacturing should be non-porous, producing a more durable product. From reading the present disclosure, other variations and modifications will be apparent to the skilled person. Such variations and modifications may involve equivalent and other features which are already known in the art of resealable containers and which may be used instead of, or in addition to, features already described herein. Although the appended claims are directed to particular combinations of features, it should be understood that the scope of the disclosure of the present invention also includes any novel feature or any novel combination of features disclosed herein either explicitly or implicitly or any generalisation thereof, whether or not it relates to the same invention as presently claimed in any claim and whether or not it mitigates any or all of the same technical problems as does the present invention. Reference may be made herein to the spatial relationships between various components and to the spatial orientation of various aspects of components as the devices are depicted in the attached drawings. However, as will be recognized by those skilled in the art after a complete reading of the present disclosure, the devices, members, apparatuses, etc. described herein may be positioned in any desired orientation. Thus, the use of terms such as “above,” “below,” “upper,” “lower,” or other like terms to describe a spatial relationship between various components or to describe the spatial orientation of aspects of such components should be understood to describe a relative relationship between the components or a spatial orientation of aspects of such components, respectively, as the device described herein may be oriented in any desired direction. Features which are described in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, various features which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination. The applicant hereby gives notice that new claims may be formulated to such features and / or combinations of such features during the prosecution of the present application or of any further application derived therefrom. For the sake of completeness it is also stated that the term "comprising" does not exclude other elements or steps, the term "a" or "an" does not exclude a plurality, a single processor or other unit may fulfil the functions of several means recited in the claims and reference signs in the claims shall not be construed as limiting the scope of the claims.

Claims

1. A system (100) for resealing a beverage container (10), said system (100) comprising: a lid (101) configured to receive a beverage container (10) and engage with an outer surface of said beverage container (10) to secure the lid (101) against the beverage container (10), the lid (101) comprising:a top part (150) and a bottom part (120), configured to be releasably attached to each other in a threaded connection (260, 270), such that in a closed state of the lid (101), the top part (150) of the lid (101) covers an opening (11) at an end surface (12) of the beverage container (10);a support (102) configured to secure the bottom part (120) of the lid (101) against the beverage container (10); andat least one seal (140, 160) configured to be arranged at an inner surface (101’) of the lid (101), such that in a closed state of the lid (101), the opening (11) of the beverage container (10) is covered by the lid (101) and sealed from the atmosphere.

2. The system (100) according to claim 1, wherein the seal (140, 160) seals the lid (101) against a circumferential rim (13) of the end surface (12) of the beverage container (10) and thereby encloses the opening (11) of the beverage container (10).

3. The system (100) according to claim 1 or 2, further comprising a feedback mechanism (103), providing an indication to a user that the lid (101) has reached the closed state.

4. The system (100) according to any of the preceding claims, wherein the lid (101) is configured engage with an outer side surface (15) of the beverage container (10) to secure the lid (101) against the beverage container (10).

5. The system (100) according to any of the preceding claims, wherein the threaded connection (260, 270) comprises multi-start threads, preferably two-start threads.

6. The system (100) according to any of the preceding claims, wherein the bottom part (120) of the lid (101) comprises a first section (120’) and a second section (120”), forming a hollow cylinder when connected.

7. The system (100) according to any of the preceding claims, wherein the bottom part (120) of the lid (101) comprises a substantially cylindrical through-hole (121).

8. The system (100) according to claim 7, wherein the cylindrical through-hole (121) is configured to receive the beverage container (10).

9. The system (100) according to any of the preceding claims, further comprising a pump assembly (200) configured to pressurise air within the beverage container (10) preferably arranged at the top part (150) of the lid (101).

10. The system (100) according to any of the claims 1 to 8, whereinthe top part (150) of the lid (101) comprises an inner cylindrical blind hole (151) comprising threads (260) of the threaded connection (260, 270) arranged at an internal surface of the blind hole (151); andthe bottom part (120) of the lid (101) comprises threads (270) of the threaded connection (260, 270) arranged at an external surface of the bottom part (120);such that, in use, the top part (150) of the lid (101) is screwed onto the bottom part (120) of the lid (101) to reach the closed state of the lid (101).

11. The system (100) according to any of the preceding claims, wherein the support (102) is a sleeve arranged to be attached to an external surface of the bottom part (120) of the lid (101), or to an external surface of the beverage container (10), to secure the bottom part (120) of the lid (101) to the beverage container (10).

12. The system (100) according to any of the preceding claims, wherein the seal (160) is a top part seal (160) configured to be arranged at an inner base of the top part (150), such that the top part seal (160) makes contact with the circumferential rim (13) of the beverage container (10) in a closed state of the lid (101).

13. The system (100) according to claim 10 and 12, wherein the top part seal (160) is arranged to face the circumferential rim (13) of the end surface (12) of the beverage container (10) and the inner base of the top part (120) coincides with the inner base of the inner cylindrical blind hole (151), such that when the threaded connection (260, 270) is tightened toward the closed state, the base of the inner cylindrical blind hole (151) of the top part (150) of the lid (101) covers the end surface (12) of the beverage container (10) and the seal (160) is pressed against the circumferential rim (13), thereby covering and sealing the opening (11) of the beverage container (10).

14. The system (100) according to claim 9, wherein a first cavity (310) is formed within the lid (101) and arranged in fluid connection with the beverage container (10), in a closed state of the lid (101), and wherein the system (100) further comprises:a pump button (190) configured to be inserted into the lid (101) to pressurise air within the first cavity (310);a spring (180) configured to resiliently bias the pump button (190) away from the lid (101);a first valve (230) configured to attach to a side wall of the pump button (190) for regulating flow of air between the first cavity (310) and the atmosphere; and a second valve (170) configured to attach to a base of the top part (150) of the lid (101) for regulating flow of air between the first cavity (310) and the beverage container (10) via the opening (11) in the upper surface (12) of the beverage container (10);wherein the second valve (170) is configured to open to pressurise air within the beverage container (10).

15. The system (100) according to claim 14, wherein an internal air cavity (320) and an external or circumferential air cavity (310) are formed when the pump button (190) is inserted into the top part (150) of the lid (101).

16. The system (100) according to claim 14 or 15, wherein:the first valve (230) is in an open position and the second valve (170) is in a closed position when the pump button (190) is in an idle position; andthe first valve (230) is in a closed position and the second valve (170) is in an open position when the pump button (190) is pressed.

17. The system (100) according to any of claims 14 to 16, wherein the pump button (190) further comprises a plurality of panels (280) extending perpendicularly from an exterior wall of the pump button (190), and are configured to be in contact with an interior wall of the top part (150) of the lid (101).

18. The system (100) according to any of claims 14 to 17, wherein the system further comprises a pump button retainer (220) configured to be attached to a top of the top part (150) of the lid (101).

19. The system (100) according to any of the claims 1 to 9 and / or 14 to 18, wherein the support (102) is a base component (110) configured to receive a base portion (14) ofthe beverage container (10); and the system further comprises a plurality of retainer arms (130) hingedly attached to the bottom part (120) of the lid (101) to secure the beverage container (10) between the base component (110) and the bottom part (120) of the lid (101).

20. The system (100) according to claim 19, wherein the base component (110) comprises a circumferential lip (250).

21. The system (100) according to claim 19 or 20, wherein each retainer arm comprises a retainer arm lip, such that the retainer arms (130) can be attached to the circumferential lip (250) of the base component (110).

22. The system (100) according to any of the of the claims 1 to 9 and / or 14 to 21, wherein the seal (140) is a bottom part seal (140) configured to be placed at a base of the bottom part (120), such that the circumferential rim (13) of the beverage container (10) makes contact with a bottom surface of the bottom part seal (140).

23. A method for resealing a beverage container (10), said method comprising the steps of:providing a system (100) according to any of claims 1 to 23;arranging the bottom part (120) of the lid (101) to at least partly surround the beverage container (10);connecting the top part (150) of the lid (101) with the bottom part (120) of the lid (101) in a threaded connection (260, 270); andtightening the threaded connection (260, 270) to reach a closed state of the lid (101), wherein the lid (101) comprising the seal (140, 160) covers the opening (11) of the beverage container (10) and reseals the beverage container (10).

24. The method according to claim 23, wherein the system comprises a feedback mechanism (103), and the method further comprises the step of:tightening the threaded connection (260, 270) until the feedback mechanism (103) indicates to the user performing the method that a closed state of the lid (101) has been reached.

25. A method of pressurising air within a beverage container (10), said method comprising the steps of:providing a system (100) according to any of claims 14 to 22;engaging the first valve (200) to isolate air within the first cavity (310) from the atmosphere; anddepressing the pump button (190) against the spring (180) to pressurise air within the cavity (310) and, via opening of the second valve (170), air within5 the beverage container (10) to increase the pressure inside the beveragecontainer (10) to provide increased structural rigidity to the outer surface of the beverage container (10).10

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