The present invention relates to a device for the fluid-tight conservation of a substance to be mixed to another one contained in a container and the simultaneous opening of said container, which allows the two substances to be mixed upon use.

In the prior-art, devices of the type described above are known, which have a first concave element, which is provided with an edge that is adapted to be associated, in a fluid-tight manner, with a container, thus sealing it, and a second element, which, together with the first element, defines a chamber, which is adapted to contain the substance to be mixed with the one available in the container. The chamber has a removable closing wall to close the chamber itself when the second element slides relative to the first element.

The prior patent, namely the Italian patent no. IT1252265, in the name of the Applicant, discloses a device of this type, in which the second element comprises said closing wall and holding means, which are suited to hold said wall when it is in the removed position, so as to prevent the second element from falling into the container, are provided between said first element and said second element. This technical solution is very easy to be used by the user. The user, indeed, simply needs to exert a pressure on the top of the device in order to cause the second element to move downwards, thus removing the above-mentioned chamber closing wall. This is possible due to the fact that the second element has a stem, which connects the top of the device to the bottom wall of the chamber; hence, by pressing on the stem, said wall is disengaged.

In these types of devices, one of the most important requirements is the fluid-tight sealing of the chamber, which usually holds powder. Therefore, to this purpose, plastic materials are used, which are able to prevent humidity and other degrading agents from penetrating into the chamber. In the above-mentioned patent, a possible spot for the penetration of these agents is the area that connects the removable wall and the fixed wall of the chamber. This area is sufficiently sealed to prevent the substance contained in the chamber from coming out of it, but, in some particular unfavorable conditions, it could not be able to completely prevent said agents from penetrating into the chamber from the outside.

WO 2010/084176 A1 relates to a capsule for dispensing solid, free-flowing, or liquid active ingredients, wherein in said capsule, a penetrating plunger is attached to a curved membrane, and a chamber is formed by a capsule wall, said chamber being sealed by a destructible film at the end of the chamber opposite the membrane. In order to really destroy said film completely so that the active ingredient can also actually escape, the penetrating plunger is provided with elastic arms, which are angled from top to bottom and from the center to the periphery, or preferably curved. The penetrating plunger comprises a stem, which is open in the direction away from the membrane and is sealed at the bottom by an end wall. The elastic arms, the cross-section of which is gable shaped, and also a rod-shaped spike having a tip are formed on said end wall, wherein the rod-shaped spike first penetrates the destructible film upon actuation before the elastic arms take effect with their perforation teeth and cutting edges.

TW M 431147 U discloses a mixing cap including a cap body including a bottle connection part for connection to a bottleneck of a bottle, a blender container mounted in the bottle connection part corresponding to the bottleneck, a pressing shell pressable to deform elastically, and a seal member joined to the blender container and defining a storage chamber in the blender container to hold a blender. The pressing shell is elastically deformably pressable by an external force to impart a pressure to the seal member, making an opening in the seal member for allowing the blender to enter the bottle.

WO 2009/100544 A1 discloses a device according to the preamble of claim 1 having a fillable closure with a triggering pushbutton comprising a filler neck that is to be screwed onto or joined to a container neck as well as a closure cap which is associated to said filler neck and can be joined, pivoted and snapped-on the filler neck by means of a hinge connection. A separately fillable container can be inserted into the filler neck, said container being closed at the bottom with a sealing foil that can be pierced or cut open. The closure cap comprises a cap cover as a pusher disc, which can be pressed downward in the axial direction while deforming. By pressing said cap cover downward on the container inserted in the filler neck or on a rigid opening element accommodated therein, said opening element can be pressed downward so that the sealing foil of the container can be pierced and cut open.

US 2009/020495 A1 discloses a container cap that includes a housing having an inner thread for engaging with an outer thread of a mouth of a receptacle, and a casing extended inwardly from an upper wall and spaced from the housing for forming an inner peripheral space between the casing and the housing, and a compartment formed in the casing for receiving a liquid-dissolvable additive, a membrane attached to the casing for retaining the liquid-dissolvable additive within the compartment of the casing, and a piercing device may be used for selectively piercing the membrane to allowing the liquid-dissolvable additive to be released from the compartment of the casing and introduced into the receptacle.

US 2008/116221 A1 discloses a dispenser for a bottle adapted to contain a consumable beverage, the dispenser being adapted for a person to drink from and being adapted to engage the bottle, the dispenser comprising: a dispenser body adapted to hold a flavoring component, the dispenser body having a first dispenser end, adapted for drinking therefrom, and having a second dispenser end, adapted to be engaged with the bottle; a plunger slidably disposed at least partially within the dispenser body for movement from a first plunger position to a second plunger position, in which the plunger creates a passageway through the dispenser body, the passageway being adapted to allow the flavoring component from the dispenser body to mix with the consumable beverage in the bottle; and a cap slidably positioned on the first dispenser end of the dispenser body and defining a cap opening adapted to allow the person to drink the consumable beverage therefrom, the cap being moveable between a first cap position, in which the cap opening is proximate to the first dispenser end of the dispenser body, and a second cap position, in which the cap opening is spaced further from the first dispenser end than when the cap is in the first cap position, wherein when the plunger is in the second plunger position and the cap is in the first cap position, the plunger end cooperates with the cap to seal the cap opening so that the dispenser is adapted to prevent the consumable beverage from leaving the bottle.

The object of the present invention is to solve the drawbacks mentioned above by suggesting a device, in which the fluid-tight sealing is guaranteed for sure. An aspect of the present invention is relative to a device for the fluid-tight conservation of a substance to be mixed with another one contained in a container having the features set forth in appended claim 1.

The features and the advantages of the device according to the present invention will be best understood upon perusal of the following detailed description, which is explanatory and non-limiting, with reference to the accompanying drawings, which specifically illustrate what follows:

• figure 1 shows a prospective view of a container, which is associated with a closing device according to the present invention;
• figure 2 shows a cross section of the separation device according to the present invention;
• figure 3 shows a front view of the breaking element according to the present invention.

With reference to the figures mentioned above, the device for the fluid-tight conservation of a first substance to be mixed with a second substance contained in a container 1 and the simultaneous opening of said container comprises an outer cap 2 and a breaking element 3.

Cap 2 is concave, substantially cylindrical and comprises an edge portion 21, which is adapted to seal the mouth of the container, preferably a bottle, for example by means of an inner thread, on which the device can be mounted. In this way, mouth 11 of container 1 is protected against possible bacterial contaminations. Edge portion 21 also extends on the sides of the mouth of the container and, furthermore, is provided with means to seal the device relative to the mouth.

The cap has, on the upper side, a deformable portion 22 and, on the lower side, a conical portion 23, which can be inserted, by applying pressure, into the mouth of the container.

Both portions define the concavity that is adapted to house breaking element 3.

Conical portion 23 has a thickness that is substantially identical to the one of the edge portion and to the one of deformable portion 22, which, therefore, is properly pliable, despite having a local thickening 24, which is arranged where the greatest deformation occurs. Conical portion 23 is provided, on the inside, with a projecting element 25.

The conical portion is closed, on the lower side, by a thermowelded film 26, which is welded to the lower edge of the conical portion. In this way, a chamber C is defined, which holds said first substance. The first substance preferably is a powder, which can be both the solute and the solvent of the substance contained in the container, with which the device can be associated. The chamber is obviously filled before being closed by welding the film.

Breaking element 3 is inserted into the cap and comprises a stem 31, which is substantially arranged at its lower end, and has film breaking means, which comprise a plurality of spokes 32, which diagonally extend towards the outside, so as to end in a ring 33. The ring is provided, on the lower side, of a plurality of teeth 34, which are adapted to break the film 6. The upper end of the stem substantially strikes against the inside of the deformable portion of the cap.

The breaking element comprises, above the breaking means, preferably in an intermediate portion of the stem, a circle 35, which is connected to the stem by arms 36.

During the assembly phase, after the chamber has been filled with the first substance and the film has been welded, the device is mounted on the mouth of the container. In this way the substance contained in the chamber inside the cap is protected both against any type of tampering and against the contamination from external agents, such as humidity.

Upon use, the user presses on the top of the cap, which is properly flexible. In order to make this operation easier, indicator means I are provided, such as for example arrows that indicate the spot where the greatest pressure needs to be applied. Local thickening portion 24 is arranged in correspondence to the lower end of stem 31, with which it comes into contact, thus pushing it downwards. In this way, the entire breaking element moves towards the chamber closing film. breaking teeth 34, as a consequence, come into contact with the film, thus breaking it and causing the first substance to fall into the container, hence creating the mixture of the two substances.

The shape of the breaking element prevents it from completely coming out from the inside of the cap, possibly falling into the container. Suitable means to hold this element are made up of circle 35, which strikes against projecting element 25, thus preventing the element from moving further downwards. The shape of the breaking element, furthermore, makes it easier for the first substance to come out of the chamber, since spokes 32 and ring 33 are not solid structures, but they simply create a sort of frame, inside which large free spaces are provided, through which the substances, both liquids and powders, can easily move.

Now the user can break the sealing means and open the container by removing the device, thus using the mixture.