ES2361946T3 - CLOSURE OF CONTAINER THAT HAS A MEANS TO INTRODUCE AN ADDITIVE IN THE CONTENT OF THE CONTAINER. - Google Patents

Abstract

A closure device (10) mounted before adjustment to a container (12) to release an additive liquid (120) into a main liquid compartment (14) of the container (12) having an opening with a neck (16) , the closure device (10) comprising a cover member (20) comprising a pressurized fluid chamber (22) containing the additive liquid (120), and a casing body (40), having a member of plug (42) applicable with sealing effect in an opening (25) in a bottom wall (24) of the fluid chamber (22), including the cap member (42) a nozzle (60) directed away from the chamber of fluid (22), wherein the cover member (20) is provided with primary application means (30) which are applied with corresponding primary application means disposed on the housing (40) to allow the member of cover (20) is raised relative to the enclosure body (40) from a closed position a, in which the cap member (42) closes the opening (25), to an open position, in which the cap member (42) is at least partially removed from the opening (25) to provide a communication path, in use, from the fluid chamber (22) through the nozzle (60) to the main liquid compartment (14).

Description

Container closure that has a means to introduce an additive in the contents of the container.

The present invention relates to a closing device for releasing an additive liquid in a liquid of a container by actuation of the closing device and to a container that includes such a closing device. The invention is also refers to a method for mounting a closing device and to a method to introduce an additive liquid by means of actuation of a closing device.

In various applications, such as mixtures of different liquids, it may be necessary to release and mix a additive liquid in another liquid shortly before the liquid mixture It may not be possible or desirable to store the liquids in a premixed form, as they can react in way you don't want each other when they are stored as a mixture over a period of time. An example of this may be the case. of two component drugs that have a longer useful life in shelving when unmixed than when mixed. Do not However, it can also be applied to other liquids or mixtures of liquids and gases, such as water, alcoholic beverages, others drinks, and other solvents or solutions. The liquid in which it introduce the additive liquid can be a liquid with gas or without gas.

A set to release an additive liquid in a liquid from a container when a container closure is released is known by the prior art. The international request of WO97 / 05039 patent discloses a device for releasing a liquid in another liquid contained in a container. The known device It is for use with containers that have closures releasable The device according to the prior art comprises a fluid chamber to store a fluid. The fluid chamber is located adjacent to an opening in the container. The camera fluid comprises a fluid outlet to release fluid in the liquid.

Said known device has the disadvantage that the closure must be opened, at least partially, to allow mixing the fluid stored in the fluid chamber with the liquid in the bowl. In addition, the device is complex of manufacture and requires many pieces.

U.S. Patent No. 6,843,368 B1 describes a closing device to introduce an additive to pressure for liquid in a container through a tube or a conduit submerged. The described closure can only be mounted when It is being adjusted to the container.

The international patent application WO 01/83313 A describes a closure device that releases dust in a Bottle when open. The device is not under pressure and it simply relies on gravity to allow dust to enter in the container when the closure is opened.

According to a first aspect of the present invention, a closing device is provided mounted before its fit to a container, which has a main compartment of liquid and an opening with a neck,

comprising the mounted closing device a cover member, which defines a pressurized fluid chamber that it contains an additive liquid, and an enveloping body, which has a Applicable cap member with sealing effect in an opening in a bottom wall of the fluid chamber,

including the cap member a nozzle directed away from the fluid chamber, in which the cap member it is provided with primary means of application that apply with corresponding primary means of application arranged on the wrapping body to allow the cover member to be raised relative to the enclosure from a position closed, in which the cap member closes the opening, until a open position, in which the cap member is removed, at less partially, of the opening to provide a path of communication, in use, from the fluid chamber through the nozzle to the main liquid compartment.

The enveloping body can include a wall inside of the enclosure adapted to fit inside the opening neck and closure device includes means of sealed that make a tight seal between the fluid chamber and the inner wall of the enveloping body. This keeps a seal. between the fluid chamber and the inner wall of the housing and, therefore, between the fluid chamber and the neck as the cover member and the fluid chamber are raised relative to the enclosure and the container, in both closed positions and open The contents of the fluid chamber can thus enter the main compartment of liquid and be mixed, for example shaking the container, without risking the content escape between the closing member and the container.

In a preferred embodiment, the means of Primary application on the cap member include a thread internal and primary means of application on the body envelope include an external thread, so that the member of lid is lifted relative to the body by rotation of the cover member However, other forms of media are possible. primary application, for example a bayonet type application, a friction traction application, a sliding application longitudinal or any other suitable form of application. The primary means of application may prevent the cap member It becomes completely separated.

The cover member may include a wall top of the lid, an outer wall of the lid, on which the internal thread is arranged, and an inner wall of the cover, extending from the top wall of the lid to the wall bottom and that is arranged inside the outer wall of the lid The bottom wall can be formed independently of the rest of the cover member, which can be realized as a Unique molded element.

The fluid chamber may be defined by the top wall of the lid, the inner wall of the lid and the wall lower.

The enveloping body can comprise a wall outside of the wrapping body on which the thread is arranged external The thread can have an angle with a slope relatively strong, so that the cover member rises quickly when it spins.

The outer wall of the surrounding body can be provided with an internal secondary thread adapted to be applied, in use, with an external secondary thread arranged on a neck of a container opening. Therefore, in use, the outer wall of the surrounding body may be screwed into the outside of the neck

In one embodiment, the means of application primaries on the enveloping body may comprise a thread outer disposed on an upper portion of the enveloping body which, in use, extends above the neck of the opening.

The enveloping body may further comprise a inner wall of the enclosing body arranged inside the outer wall of the enclosure body and provided with sealing means internal to close tightly against an outer surface of the inner wall of the lid and external sealing means for tightly close against an inner surface of the neck of the opening. The inner wall of the surrounding body may be connected to the outer wall of the enclosure by means of a band that, in use, sits on the top of the neck. The band it can be an open, closed, solid or any other construction suitable construction to connect the inner wall of the body envelope to the outer wall of it.

The enveloping body may further comprise a frame that supports the cap member, so that said member It is arranged inside the inner wall of the body envelope and, in use, extends upward towards the fluid chamber The frame may include openings that allow passage of fluid through it, to avoid creating vacuum between the fluid chamber and the enveloping body, so that the body envelope is free to slide relative to the cover member when said member is introduced into the enveloping body or removed from it. The openings also prevent the provision liquid in the frame after discharge, which minimizes any liquid residue in said frame.

The cap member includes a nozzle directed away from the fluid chamber.

The cap member may include a surface cylindrical exterior that is applied with sealing means arranged in the bottom wall. The sealing means must be capable of retaining pressurized fluid in the fluid chamber when said fluid is at a pressure higher than the content of the container.

The sealing means may comprise a upper sealing element that closes tightly against the cylindrical outer surface of the cap member when the cover member is in the closed position and it allows the passage of fluid between the upper sealing element and the cap member when the cover member is in the open position.

The sealing means may comprise a lower sealing element that closes tightly against the cylindrical outer surface of the cap member when the Cap member is in closed and open positions. This ensures that, in the open position, the pressurized fluid only can escape entering the vessel through the path communication and nozzle, and does not leak around the member of cap.

The cap member may include a passage internal fluid that extends to the outer surface cylindrical in a position below the upper element of sealed when the cover member is in the closed position, the internal fluid passage being in communication with the nozzle.

The cover member may include a strip of anti-tamper disposed on said member to prevent rotation of the cover member relative to the housing without the withdrawal, at least partially, of the anti-tampering strip.

The anti-tampering strip may comprise a extension of the outer wall of the cover connected to said wall by a portion of the neck thinner than the outer wall of the cover, the extension being provided with a flange that apply below the outer wall of the wrapping body to prevent the lifting of the cover member in relation to said body. The strip can have a pin on which you can exercise traction to tear the strip from the outer wall of the Cap along the neck.

The member's primary means of application of cover and of the enclosure body can include reliable means mutually applicable to prevent rotation of the cover member in relation to the enveloping body beyond a limiting angle Default rotation. When the lid member is rotated, it will do so initially in relation to the enveloping body, but once that the securing means, the cover member and the body are applied envelope rotate together.

The enveloping body may include a anti-tamper device that prevents rotation of the limb of cover and of the surrounding body in relation to the neck of the vessel until a predetermined torque is applied to the cover member

The anti-tamper device can understand an extension of the outer wall of the body envelope connected to the outer wall of said body by means of the minus a portion of the neck of reduced area in cross section in relation to the outer wall of the surrounding body, the extension provided with reliable means adapted to be applied, in use, with reliable means arranged on the container neck, to prevent body lift envelope in relation to the neck without breaking said bliss at least one neck portion

The fluid chamber may contain a liquid additive and a superior space of gas under pressure.

According to a second aspect of the present invention, a container having a compartment is provided main liquid, an opening that has a neck, and a closing device that closes said opening, in which the closure device is mounted before fitting it to the container, The mounted closure device comprises a cover member, which defines a pressurized fluid chamber that contains a liquid additive, and an enveloping body, which has a cap member applicable with sealing effect in an opening of a wall bottom of the fluid chamber, including the cap member a nozzle directed away from the fluid chamber, in which the member cover is provided with primary means of application that apply with corresponding primary means of application arranged on the enveloping body to allow the member of cover is raised relative to the enclosure body from a closed position, in which the cap member closes the opening, to an open position, in which the cap member is removed, at least partially, from the opening to provide a communication path, in use, from the fluid chamber to through the nozzle to the main liquid compartment, and in which the enclosure body of the closure device is secured to the neck of the container.

The enveloping body can include a wall inside the body wrapped inside the neck of the opening and closing device includes sealing means that perform a tight seal between the fluid chamber and the wall inside of the enveloping body. This keeps the seal between the fluid chamber and the inner wall of the enveloping body in both closed and open positions.

The primary means of application on the cap member may include an internal thread and the means of Primary application on the enveloping body include a thread external, to allow the cover member to be lifted with relation to the housing by rotation of the cover member.

The main liquid compartment can contain a primary liquid, which may contain water or be a drink. However, the primary liquid could be a drink alcoholic, a cosmetic preparation, a pharmaceutical product, a dairy product, an agricultural food or other product, or any other suitable liquid or suitable semi-liquid substance.

The fluid chamber contains an additive liquid and may contain a higher pressure gas space.

The cover member may include a wall top of the lid, an outer wall of the lid, on which the internal thread is arranged, and an inner wall of the cover, extending from the top wall of the lid to the wall bottom and that is arranged inside the outer wall of the lid

The fluid chamber may be defined by the top wall of the lid, the inner wall of the lid and the wall lower.

The enveloping body can comprise a wall outside of the wrapping body on which the thread is arranged external The outer wall of the enclosure can be located on the outside of the neck of the container and may be provided with an internal secondary thread applied with a secondary thread outer arranged on the neck of the container.

In one embodiment, the means of application primaries on the enveloping body may comprise a thread outer disposed on an upper portion of the enveloping body that extends above the neck of the container.

The enveloping body may further comprise a inner wall of the enclosure body disposed inside the container neck and provided with internal sealing means for tightly close against an exterior surface of the wall inside of the lid and external sealing means to close tightly against an inner surface of the neck of the opening.

The enveloping body may further comprise a frame that supports the cap member, so that said member It is arranged inside the inner wall of the body envelope and, in use, extends upward towards the fluid chamber

The cap member includes a nozzle directed away from the fluid chamber.

The cap member may include a surface cylindrical exterior that is applied with sealing means arranged in the bottom wall.

The sealing means may comprise a upper sealing element that closes tightly against the cylindrical outer surface of the cap member when the cover member is in the closed position and it allows the passage of fluid between the upper sealing element and the cap member when the cover member is in the open position. The means of sealing may comprise a lower sealing element that is tightly close against the cylindrical outer surface of the cap member when the cap member is in the positions closed and open.

The cap member may include a passage internal fluid that extends to the outer surface cylindrical in a position below the upper element of sealed when the cover member is in the closed position, the internal fluid passage being in communication with the nozzle.

The cover member may include a strip of tamper-proof to prevent rotation of the cover member with relation to the enveloping body without the withdrawal, at least partially, of the tamper strip. The tamper strip can comprise an extension of the outer wall of the lid connected to said wall by a thinner neck portion that the outer wall of the lid, being the extension provided of a flange that is applied below the outer wall of the wrapping body to prevent the lifting of the cover member with relationship to that body.

The member's primary means of application of cover and of the enclosure body can include reliable means mutually applicable to prevent rotation of the cover member in relation to the enveloping body beyond a limiting angle Default rotation.

The wrapping body may include an anti-tampering device that prevents rotation of the lid member and of the wrapping body relative to the neck of the container until a predetermined torque is applied to the lid member. The anti-tamper device may comprise an extension of the outer wall of the enclosure body connected to the outer wall of said body by means of at least a portion of the neck of reduced area in cross section relative to the outer wall of the enclosure body, the extension being provided of sure means adapted to be applied, in use, with sure means arranged on the neck of the container, to prevent the elevation of the wrapping body relative to the neck without breaking said at least a portion of the
neck.

According to a third aspect of the invention, it has been provided a method to mount a closure device containing additive liquid for introduction into a main compartment of liquid from a container, the method comprising the following stages:

arrange a cover member,

secure a lower wall to said member of lid to define a fluid chamber that can be set to Pressure,

invert the cover member and enter a additive liquid in the fluid chamber through an opening in the bottom wall,

arrange a wrapping body that has a cap member, including the cap member a nozzle directed away from the fluid chamber,

fix the enclosure body to the cover member by the relative axial movement of the enveloping body and the member cap, both having primary means of application corresponding for this purpose, so that the cap member enters and closes the opening in the bottom wall of the chamber of fluid,

pressurize the fluid chamber, and

store the closing device with the camera under pressure containing the additive liquid for later adjustment to the vessel

An inner wall of the surrounding body can enclose the fluid chamber and close tightly against the same.

The relative axial movement of the cover member and the enveloping body can be achieved by application of a external thread on the housing with an internal thread on The cover member.

The method may include the additional stage of purge the fluid chamber before introducing the additive liquid, for example purging with nitrogen or any other gas suitable.

The pressure stage can be achieved providing pressurized fluid at a passage in said plug member, the passage being in communication with valve means that prevent the release of pressurized fluid from the chamber of fluid. The valve means may comprise an element of seal that is applied with the cap member when it closes The opening. The upper sealing element is arranged to function as a butterfly valve so as to allow introduction of pressurized fluid into the fluid chamber, but a once it is under pressure, the sealing element is pushed against the cap member to leave the fluid chamber sealed.

The pressurized fluid can be a gas that forms a superior space in the fluid chamber between 0% and 60% of the volume of said camera.

The stage of securing the wall below the cap member may include sealing the bottom wall to a free edge of an inner cylindrical wall of the member of top.

The method may include the additional stage of secure the closure device to a neck of a container that it has a main liquid compartment by application of a internal thread on the housing with an external thread on the neck of the vessel

The closing device can be an adjustment with press on the neck of a container to block said device on the container.

According to a fourth aspect of the invention, it has been provided a method to introduce an additive liquid into a main liquid compartment of a container that has a opening with a neck, with the neck fixed to it a closure device comprising a wrapping body fixed to the neck and a cap member, which defines a fluid chamber to pressure fixed to the enclosure body, in which the device closure is mounted and filled with the additive liquid before its neck fixation, the method comprising the stages of

raise the cover member with respect to the body envelope, both having primary means of application corresponding for this purpose,

make a stopper member arranged on said wrapping body moves relative to the cover member from a closed position, in which an opening arranged in a bottom wall of said fluid chamber is closed by said cap member, to an open position, in which the member cap is removed, at least partially, from the opening for provide a communication path from the chamber of fluid through a nozzle disposed in the cap member and directed away from the fluid chamber to the compartment main liquid, and

release the additive liquid under pressure from said fluid chamber along said communication path to said main liquid compartment.

Optionally, during camera elevation of fluid relative to the enclosure, the seal is maintained between the fluid chamber and an inner wall of the housing arranged in the neck of the container.

The cover member can be lifted by making rotate said member, so that the fluid chamber rises by screw thread action in relation to the body envelope

The cover member can be rotated a first angle between 0º and 90º, optimally approximately 45º, from the closed position to the open position. A rotation Additional cover member may be limited to one second angle between 0º and 90º, optimally approximately 45º, by the mutual application of surety means arranged on the member of Cap and body wrap. The second angle is predetermined. by the position of the surety means. Said angle is selected so that it is sufficient to ensure the opening of the member of cap and the consequent mixture of the additive liquid, allowing manufacturing tolerances

Lifting said cover member with relation to the enveloping body can be achieved by application of an internal thread on the cover member with an external thread on the enveloping body.

The internal thread may be arranged on a outer wall of the lid member lid.

The fluid chamber may be defined by a top wall of the lid, a bottom wall and an interior wall of the lid, which extends from the top wall of the lid to the bottom wall and that is arranged inside the wall outside of the lid.

The external thread can be arranged on the outer face of an outer wall of the enveloping body.

The rotation of the cover member, additionally to remove said member and the wrapper body from the container, can be achieved by applying an internal secondary thread on the enveloping body with an external secondary thread arranged on a neck of a container opening.

The internal secondary thread can be arranged on the inner face of the outer wall of the body envelope

The inside wall of the lid can be extended inside the neck of the container.

The enveloping body can include a wall inside of the enveloping body, arranged inside the neck of the container and provided with sealing means for sealing between a outer surface of the inner wall of the shell and a inner surface of the neck of the container.

Optionally, during the lifting of said cover member in relation to the housing, means of sealed perform a tight seal between an outer surface of the inner wall of the lid and an internal surface of the wall inside of the enveloping body.

Optionally, the communication path includes a nozzle on the cap member and an internal passage of fluid that extends from the nozzle to a position on the surface of said member that is in communication with the camera of fluid when the cap member is in position open

The method may also include the stage of remove, at least partially, a tamper strip arranged on the outer wall of the lid, thereby allowing the rotation of the cover member relative to the housing.

The method may also include the stage of apply enough torque to the cap member, during the stage of making rotate the cover member further to remove the member from lid and wrapper body of the container, in order to extract a anti-tamper device

The invention will be described, only by way of example, with reference to the drawings, in which:

Figure 1 shows a cross section through a closure device, according to the invention, secured to the neck of a container;

Figure 2 shows a side elevation of the closure device of figure 1;

Figure 3 is a cross section through the line III-III in figure 2;

Figures 4A, 4B, 4C and 4D are drawings sequential in cross section showing the drive of the closure device of figure 1 for introducing liquid additive in a container and to remove from it the device closing;

Figures 5A and 5B are sequential drawings in cross section showing the assembly and filling of the closure device of figure 1;

Figures 6A and 6B are seen from below and from above, respectively, of the components of a device modified closure, according to figure 1;

Figure 7 is a bottom view of another embodiment of a closing device according to the invention;

Figure 8 is a cross section through a example of a bottom wall of the cover member of the device closure of figure 1;

Figure 9 is a perspective view from one side of an additional alternative housing;

Figure 10 is a cross section through a closure device that includes the enclosure of the figure 9;

Figure 11 is a schematic view of the closure of figure 10 in a bottle;

Figure 12 is a cross-sectional view. by a further embodiment of a closing device;

Figure 13 is a schematic view of the closure of figure 12 in a bottle; Y

Figure 14 is a schematic view of another additional embodiment more than one closing device in a bottle.

With reference to figures 1 to 3, it is shown a closure device 10 together with the top of a container 12. The container is a standard PET bottle that It has a main liquid compartment 14 and a standard neck 16 of 30 mm with an external thread 18. With the objectives of this invention, the thread is described as a secondary thread 18.

The closing device 10 comprises two parts main, a cover member 20, which defines a fluid chamber 22, and a wrapping body 40. The cover member 20 includes a bottom wall 24 which, although it may be made of a material different, it is secured to the rest of the cover member 20 to form a unitary member An opening 25 is arranged in the bottom wall 24. The cover member 20 includes an upper wall 26 of the lid, an outer wall 28 of the lid and an inner wall 32 of the lid, which can all be formed as a single element molded from polypropylene or any other suitable plastic. The outer wall of the lid includes a thread internal primary 30 adapted to apply to a primary thread corresponding external on the enclosure 40, as will describe below. The internal and external primary threads together, they are part of the primary means of application that allow cap member 20 to be lifted relative to enclosure 40. The outer wall 28 of the lid includes also surface depressions 34 on the outer surface to help hold the outer wall of the lid. Any suitable surface feature may be arranged instead of the depressions 34 shown.

The wrapping body 40 is also formed preferably, as a unit molded element of polypropylene, although it can be formed from any other suitable material. Said body comprises a cap member 42 arranged on the central axis of the closure member 10, a wall outer 44 of the housing adapted to fit in the outside of neck 16, a band 45 that sits on the side upper neck 16, an inner wall 46 of the wrapping body, extending downward from the band 45 inside the neck and that closes tightly against neck 16, and a frame 48 extending from the inner wall 46 of the body envelope and supports the cap member 42.

The outer wall 44 of the housing has an external primary thread 50 that is applied to the primary thread internal 30 on the cover member as part of the means of primary application. This wall also has a thread internal secondary 52 that applies to external secondary thread 18 on the neck 16 of the container.

Internal sealing means 54 are provided for seal between the inner wall 32 of the lid and the inner wall 44 of the enveloping body. In the illustrated example, the means of Internal sealing 54 are formed as ribs on the surface outside of the inside wall of the lid, but they could be formed as nerves on the inner surface of the wall inside the enveloping body, or like any other suitable means sealing. The internal sealing means 54 prevents the contents of the container 12 pass between the inner wall 32 of the lid and inner wall 44 of the enclosure body during storage and while the lid member 20 is lifted with relation to the enclosure 40, as will be described more ahead.

External sealing means are provided in the form of an inclination 56 and a rib 58 to seal between the wall inside 44 of the housing and neck 16 of the container 12. Such sealing elements are well known in the art and serve to prevent the contents of the container 12 from passing between the wall inside 44 of the enveloping body and neck during storage. Also, an inclination sealing element is can be used for internal sealing means 54.

The plug member 42 has a nozzle 60 which It extends below it. A step 61 of the nozzle is arranged to transport liquid under pressure from the chamber of fluid 22 when the closing device is opened. The member of plug 42 is formed with a cylindrical outer surface 62, which applied with sealing effect with sealing means 64 arranged in the opening 25 in the bottom wall 24. In the example, the means of sealing comprise a top sealing element 66 which, when the cap member 42 is in the closed position of Figure 1, it is applied with the cylindrical outer surface 62 above a internal fluid passage 70, while a lower element of sealed 68 is applied with cylindrical outer surface 62 by below the internal fluid passage 70.

The upper surface 76 of the lower wall 24 leans toward the plug member 42, so that all the liquid is drained from the fluid chamber 22 when the member of Stopper is in the open position. The bottom sealing element 68 is held by a collar 72 arranged on the frame 48 that pushes the lower sealing element 68 against the member of cap 42.

In the illustrated example, the bottom wall 24 includes a tab 74 that locks on a tab corresponding on the edge of the inner wall 32 of the lid when the cover member is mounted. However, it can be used any other suitable method of vapor tight connection, such as laser welding.

An anti-tamper strip 80 is on the edge bottom of the outer wall 28 of the lid, with a pin 81 of which can be pulled to remove the strip. The strip is a extension 82 of the outer wall 28 of the cover, connected by a portion 84 of the neck, and which is applied to the lower side 88 of the outer wall 44 of the housing by means of a locking flange 86. Such anti-tamper strips are known in the art and not They are described further. Until the tamper strip 80 is removed, at least partially, the cover member 20 does not It can be unscrewed from the enclosure 40. Once the strip of anti-tamper 80 is withdrawn, at least partially, the cover member 20 can be unscrewed from the enclosure 40 by interaction of the internal thread 30 on the cover and the thread external 50 on the enveloping body. Threads include means mutual application fasteners 90, 92, as best seen in the figure 4, which serve to limit the relative rotation of the cover member 20 and the enveloping body 40. It should be understood that any form or appropriate outgoing mutual application can be used to Limit this movement. The tamper strip can be replace with any other suitable anti-tamper means, or It can be omitted.

An additional anti-tamper device 100 is disposed at the bottom edge of the outer wall 44 of the enveloping body The device is an extension 102 of the outer wall 44 of the housing, connected by one or more portions 104 of the neck, and includes a flange 106 which is it applies to corresponding sure means 108 arranged on the neck 16 of the container. Such anti-tamper devices They are known in the art and are not further described. A pair default force applied to cap member 20 is required to break portions 104 of the neck and allow the body envelope 40 be lifted over the secondary threads 18, 52 with relation to the neck 16. The anti-tamper device 100 is keeps on the neck 16 of the container 12 below the catch 108. On the other hand, any other device of adequate antimanipulation, or it can be omitted in certain circumstances.

Figures 4A to 4D show the drive of the closure device of the invention.

In Figure 4A, the closing device 10 is secured to a container 12 containing a primary liquid (not shown), for example water, in its main compartment of liquid 14. The fluid chamber 22 in the cover member contains a liquid additive 120 and a space 122 at the top of gas a Pressure. The closing device 10 is in the closed position, in which the fluid chamber 22 is left sealed by the member of plug 42 which is applied in the opening 25 in the bottom wall 24. The wrapping body 40 is screwed completely into the neck 16 through the secondary threads 18, 52, and the cover member 20 it is completely screwed into the outer wall 44 of the body envelope through the internal and external primary threads 30, 50. The contents of container 12 may be under pressure. atmospheric, or it can be set at a pressure lower than that of the fluid chamber 22. There is a sealing element 54 arranged between the fluid chamber 22 and the inner wall 46 of the body envelope, and additional sealing elements are arranged between the inner wall 46 of the housing and the neck 16 of so that the contents of the container are sealed with respect to the outside atmosphere

To activate the discharge of liquid additive 120 in the main liquid compartment 14 of the container 12, the cap member 20 must be unscrewed in relation to the body envelope 40 to the position shown in Figure 4B, a first 45º angle according to the preferred embodiment. However, it is due understand that this first angle can be any desired angle for proper selection of thread and pitch. First, the strip of anti-tamper 80 is removed, at least partially, so that the outer wall 28 of the lid is free to be lifted in relation to the outer wall 44 of the housing. TO The cap member 20 is then grasped and rotated. primary threads 30, 50 have a relatively threaded angle large, so that a vertical shift is made relatively large by a relatively small rotation. TO as the cover member rises, the fluid chamber 22 is lifts away from cap member 42. When the upper element sealing 66 of the bottom wall 24 passes over the part upper of the cap member 42, as shown in Figure 4B, the main liquid compartment 14 enters communication from fluid with fluid chamber 22, and pressure additive liquid 120 is free to pass between the upper sealing element 66 and the outer surface 62 of the plug member 42, entering the internal fluid passage 70, along the passage 61 of the nozzle and leaving the nozzle 60 to the main liquid compartment 14. The lower sealing element 68 in the lower wall 24 follows making a tight seal between the bottom wall 24 and the cap member 42, so that the additive liquid 120 is not may leak to the main liquid compartment 14 along any other trajectory Typically, the primary thread 30, 50 is a standard thread of PET bottle 30/25 with a pitch of 9 mm, from type used with PET water bottles, and the device closure 10 is arranged so that the additive liquid 120 is discharge into the main liquid compartment 14 when the lid member is rotated 45 ° from the closed position under optimal tolerances In practice, this angle could be more smaller or larger, in the range of 0º to 90º.

The volume of space 122 at the top is chosen to be large enough so that all the additive liquid 120 is ejected to the main liquid compartment 14. The upper surface 76 of the lower wall 24 tilts down towards the opening 25, so that by gravity all the additive liquid circulates to the opening. The extreme upper of the cap member 42 is also shaped to ensure that any amount of liquid on it drains up to the perimeter of the cap member 42.

Referring below to the figure 4C, after the release of additive liquid 120, the member of lid 20 is further rotated a second angle of 45 ° according to the preferred embodiment, until the securing means 90, 92 mutually applicable on the cover 20 and the housing 40 apply to each other and prevent additional relative rotation. Typically, this happens when the cover member 20 is rotated a total of 90º from the closed position. At this point, the pair on the cover member 20 is transferred to the outer wall 44 of the enveloping body and enveloping body 40 begins to rotate with relation to the neck 16 of the container. In the illustrated embodiment, an anti-tamper device 100 is arranged in the body envelope 40, so an increased torque must be applied to break first portions 104 of the neck of the device 100 anti-tamper before the enveloping body can be raised in relation to the container 12 by application of the threads Secondary 18, 52. Secondary threads 18, 52 are typically MCA2 threads of a 3.2 mm pitch. Figure 4C shows the closing device in a partially raised position. TO as the cover member 20 is rotated, the entire device closure 10 is lifted from the container 12, until it is as shown in figure 4D, removed from container 12.

If required, the closing device 10 will be you can screw it back into the container 12, to close it. Custom that the cover member is rotated, the cover member 20 will rotate back to its original position in relation to the enveloping body 40 and then the cover member 20 and the housing 40 will rotate together on the external secondary thread 18 arranged in neck 16, until they can no longer be turned and the container 12 left sealed.

Referring to Figures 5A and 5B, shows a method for mounting a closing device 10 according to the invention. The cover member 20, without the bottom wall 24, is formed by molding, for example, polypropylene. The body envelope 40 is also independently formed by molding of, for example, polypropylene.

The bottom wall 24 is shown in more detail in figure 8. Said wall may be formed by any suitable material and is formed so that it can be secured easily to the inner wall 32 of the lid member lid 20 to form the fluid chamber 22. Although it may be formed by a single material, in figure 8 it is shown formed by two materials, a frame 77 of a relatively rigid plastic and a sealing portion of relatively flexible material. In the example of figure 8 there is a first sealing portion 64 of material softer sealing to provide superior elements and bottom seal 66, 68 that are applied with the cap member 42. There is also a second sealing portion 78 that provides a secure sealing element against the inner face of the inner wall 32 of the lid. Frame 77 provides the required structural strength and stiffness of the lower wall 24 to resist the pressure that arises from the fluid chamber a pressure 22 in use. Since the material of the frame 77 is relatively resistant and rigid, the weight can be reduced forming trimmed areas 79. A suitable technique for manufacturing the bottom wall 24 is insert molding, in which the frame 77 It is first formed by molding and then placed in a second mold and has the sealing portions 64, 78 formed around the same. Suitable materials for the sealing portion are rubber natural or synthetic or thermoplastic elastomers. materials Suitable for the frame are metal or rigid plastics.

The bottom wall 24 is secured to the wall inside 32 of the lid by any appropriate technique, for example by applying a flange flange 74 in a groove corresponding on the outer face of the inner wall 32 of the cap, or by laser welding, ultrasonic welding or rotary rub welding. The fluid chamber 22 is defined then by the lower wall 24, the upper wall 26 of the lid and the inner wall 32 of the lid.

The cover member 20 is placed in the inverted position shown in Figure 5A and, after purging with nitrogen or other suitable purge means to remove impurities, the additive liquid 120 is then introduced into the chamber of fluid 22 through the opening 25 in the bottom wall 24.

The enveloping body 40 is then placed on the cover member 20 by application of the primary thread external 50 on the enclosure 40 with the primary thread internal 30 on the cover member 20 so that the member of stopper 42 enters and closes the opening 25 in the bottom wall 24, thereby sealing the additive liquid 120 in the fluid chamber 22, as shown in Figure 5B.

The fluid chamber 22 can be put under pressure at the time of filling or at any other time before use the closure device 10 to close a container 12. The pressure stage can be achieved by providing gas to pressure to step 61 of the nozzle. Step 61 of the nozzle is in communication with an internal fluid passage 70 that exits on the cylindrical outer surface 62 of the cap member 42 and, thus, is in communication with volume 63 between the upper elements 66 and lower sealing 68. The lower sealing element 68 is held against the cap member 42 by means of a collar 72 on the enveloping body 40, and still closing tightly against the cap member 42 even when volume 63 is pressed. The upper sealing element 66 provides means one-way valves to allow fluid chamber 22 to be under pressure The upper sealing element 66 functions as a butterfly valve. When the pressure in volume 63 is greater than the pressure in the fluid chamber 22, the upper element of sealing is pushed away from the cap member 42 so that the Pressurized gas can circulate from volume 63 to beyond upper sealing element 66 to the fluid chamber 22. When eliminates the source of gas under pressure, and the pressure in volume 63 and step 61 of the nozzle returns to atmospheric pressure, the element upper seal 66 is pushed against the cap member 42 to leave the fluid chamber 22 sealed.

Typically, the gas forms a space 122 in the upper part of the fluid chamber 22 between 0% and 60% of the volume of the fluid chamber 22.

After the chamber has been pressed of fluid 22, the closure device 10 is secured to the neck 16 of a container 12 by application of the internal secondary thread 52 on the enclosure 40 with the external secondary thread 18 on the neck 16 of the container, to seal the contents of the container.

In an alternative embodiment, which does not form part of the invention, when used with a pressure vessel 10, for example a container containing a carbonated beverage, the fluid chamber does not have to be under pressure before securing it to the bowl neck The internal pressure of a carbonated beverage it can be typically 310 kPa (45 psi), and the one-way valve described above will allow fluid chamber 22 to reach The same pressure. If the pressure in the main compartment of liquid 14 is temporarily increased further, for example to 480 kPa (70 psi) by pasteurization, then, the pressure in the fluid chamber 22 will also reach this pressure by eliminating pressure from space upper of the main liquid compartment 14 through the one way valve. However, when the pressure in the main liquid compartment 14 returns to its previous pressure, say 310 kPa (45 psi), the pressure in the fluid chamber 22 is will keep at the highest pressure, say 480 kPa (70 psi), set that the sealing element 66 will impede the flow of fluid from the fluid chamber 22. If the space 122 at the top of the fluid chamber 22 is large enough, this difference in pressure will be sufficient to discharge the liquid additive to the actuate the closing device.

Although the cap member 42 may be formed as a unit molded element with the rest of the body envelope 40, figures 6A and 6B illustrate an embodiment alternative in which the cap member 142 is formed independently and inserted by an elastic jump adjustment in an opening 143 disposed in the housing. Others components of the closing device are the same as those illustrated with respect to figures 1 to 5 and therefore not describe further. The cap member 142 may be formed by a material different from the rest of the enveloping body 142. This is beneficial if the envelope body material is incompatible with liquid additive 120, and it is desired to perform the cap member 142 of a different material that is compatible, since that the cap member 142 remains in contact with the additive liquid 120 during storage. Cap member 142 may be made of metal or any molded plastic material suitable.

Figure 7 shows another embodiment of the invention similar to that of figures 1 to 5. The parts that are the same as those described with reference to figures 1 to 5 are indicated by the same reference signs. They differ in that the internal primary thread 30 on the cover member 20 and the thread external primary 50 over the enclosure 40 are replaced by a pair of pushing elements 458 on the inside of the member of cover 20 and a pair of bayonet slots 450 arranged on the outer wall 44 of the surrounding body. The thrust elements 458 they are applied in slots 450 to form the means of application primaries that allow cap member 20 to be lifted with relation to the enclosure 40.

Although only one element of push and a groove, it will be understood that two or more may be arranged around the circumference of the cover member 20 and of the enclosure 40. If required, the thrust element can be arranged on the enclosure and the grooves on The cover member. Each bayonet slot includes a first horizontal section 452 that allows relative rotation of the member of cover 20 and of the enclosure 40 in the closed position, a vertical section 454 allowing the sliding of the member of cover 20 relative to the enclosure 40 from the position closed to the open position, and a second horizontal section 456 which allows the relative rotation of the cover member 20 and the enveloping body 40 in the open position. Vertical section 454 and the pushing elements 458 form guiding means longitudinal.

The first horizontal section 452 can be omit, so that when the tamper strip is removed 80 no rotation of the cover member 20 is required to allow that the cover member 20 slides relative to the housing 40 from the closed position to the open position. In fact, the internal pressure in the fluid chamber 22 acting on the part upper of the cap portion 42 may be sufficient to Automatically perform this movement.

The second horizontal section 456 can be omit, if required, so that the cover member 20 and the body 40 envelope rotate together to immediately remove from container 12 the closing member 10. The pushing element 458 and the slot 450 will act as well as reliable means of mutual application to rotatably lock the cover member 20 and the body envelope 40 each other.

Figures 9 to 14 show embodiments of the invention in which parts that are the same as those described with reference to figures 1 to 8 are indicated by The same reference signs.

Figures 9 to 11 illustrate an embodiment in which achieves a similar reduction in the diameter of the member of lid providing an upper portion 401 of the wrapping body that has an area of reduced diameter above the band 45 of the enveloping body The upper portion of the enveloping body can be integrally formed with the rest of the enveloping body 40. In this embodiment, the primary means of application are a external thread 404 over the reduced diameter area of the body envelope and a corresponding internal thread 405 on the wall outside of the lid.

In this embodiment, the tamper strip 80 of the outer wall 28 of the lid extends downwards in direction to the container 12 in the form of a skirt.

Figures 12 and 13 show an embodiment of the invention similar to that of Figures 8 to 11, in the that the height of the lid is increased to accommodate the means of primary application between the lid and the enveloping body in the upper part of the housing 401 above the band 45. In this embodiment, the enveloping body is similar in shape to the shown in figure 9 with the primary means of application provided by an external thread 404 on the upper portion of reduced diameter of the housing and an internal thread 405 on the outer wall of the lid. Increasing member height from the lid, the volume of the fluid chamber can be increased, from so that additional additive can be carried within the member of top.

The outer surface of the cover member is staggered in this embodiment. The upper part of the member of lid 20a surrounding the upper part of the housing 401 has a reduced diameter with respect to the main part of the member of cover 20b reflecting the reduced diameter of the upper part of the enveloping body.

The anti-tampering strip 80 has a diameter increased relative to the main part of the cover member 20b and may be raised towards the container 12 as in the previous embodiment. After removing the tamper strip, I would leave a skirt around container 12.

Figure 14 shows an embodiment of the present invention which is a further development of the embodiment of Figures 12 and 13. In this embodiment, the outer wall 281 of the lid is gradually narrowed from the upper surface to the bottom of the tamper strip 80 to provide a more aesthetic closure that can be stacked to reduce the storage space within an installation of bottling. The drive of this embodiment would be similar to shown in the embodiments of figures 12 and 13.

The present invention provides a device closure that requires fewer components than the devices in the prior art The closing device is simple to manufacture, since in one embodiment it requires only three components molded; the cap member 20, the bottom wall 24 of the member cover and body 40. The closing device is mounted and it is filled with liquid additive 120 and then stored or transported before use in a standard container 12. Said device does not require an independent filling in place bottling

The closing device allows the introduction and mixing the additive liquid 120 in the contents of the compartment main of liquid 14 from a container 12 without removing from container 12 the closing device 10.

The closing device can be used with any standard container 12, of any shape or volume, of any material, for example PET, glass, metal or any suitable plastic. External secondary thread 18 on neck 16 of the container 12 can be any standard thread.

The closing device optimizes the use of the volume inside the neck 16 of the container 12, since the chamber of fluid extends throughout the entire available neck area 16. The internal diameter of the fluid chamber 22 is limited only for the thickness of the inner wall 46 of the body envelope and inner wall 32 of the lid. The volume of the fluid chamber 22 can be modified by varying the length of the fluid chamber

The closing device cannot be operated to introduce liquid additive 120 into the main compartment of liquid 14 unless the tamper strip 80 is removed, at least partially, thereby providing security to consumer that the additive has not been mixed prematurely with the contents of the container, for example while sitting in a Store shelf.

The inner shape of the fluid chamber 22, which it has an upper surface 76 of the lower wall 24 which is tilts down towards the opening 25 and the member of cap 42, ensures that only a minimum amount of additive residual liquid is kept in the fluid chamber after the release of the additive. Therefore, the closing device 190 can be removed and placed on a surface without a significant deposition of additive on it. The shape inclined allows the full amount of additive to be supplied liquid 120 even if the container tilts with respect to the vertical during actuation of the closing device for Download the additive.

The closing device materials are can select to avoid any compatibility problem with liquid additive 120. During storage, the additive liquid is only in contact with the cover member 20 and the cap member 42. If required, the cap member may be made independently from a material other than rest of the enveloping body. If required, a coating interior, for example stainless steel, can be used in the inside the fluid chamber to avoid any contact with molded lid member 20. Certain flavoring additives or Dyes are not compatible with sealing materials. Therefore, the bottom wall 24 may be manufactured, for example by molding by insertion, so that the upper surface 76 of the wall lower 24 is polypropylene or other suitable inert material, while sealing elements 64, 78 are protected by under the upper surface material.

The closure device of the invention offers a simplified procedure to fill and assemble the device closure, and can be mounted in a container and adjusted without Need for adhesive. The fluid chamber 22 can be placed easily pressurized, using any appropriate source of gas to pressure, which you can simply adjust to the nozzle 60 on the enclosure 40 once the device has been mounted closing. No aerosol technology is necessary specialized. Liquid additive 120 may be denser or more viscous, and the area of step 61 of the nozzle and step 70 of the Internal fluid can be increased, if required, to improve the flow of a more viscous additive. They can be used with the closure device of the invention additives that require agitation for dissolution, since it allows agitation of the container after unloading, no risk of spillage through thereof between the closing device and the container, since The closure device is kept sealed to the neck.

The closing device is maintained in a piece when removed, and can be recycled. The character is improved recyclable if the closure and the enclosure are made of same material.

Modifications and variations are possible without out of the scope of the invention. In addition to the modifications and variations described above, the liquid additive can be replace with a gel or a free flowing powder or similar. Wall lower 24 may be integrally formed with the rest of the cover member 20. The closure member can be used with a container containing a carbonated beverage, provided that the pressure of the main liquid compartment 14 is less than the pressure of the fluid chamber 22. Primary threads 30, 50 may have any suitable thread design and be arranged so that the closing device unloads, that is, it ejects the additive liquid 120 to the main liquid compartment 14, after any suitable rotation angle, for example 45 °, and allow removal of the closure device from the container after any additional suitable rotation angle, for example 270 ° at 450º.

Claims (28)

1. A locking device (10) mounted before of its adjustment to a container (12) to release an additive liquid (120) in a main liquid compartment (14) of the container (12) having an opening with a neck (16), the closure device (10) mounted a cover member (20), which defines a pressurized fluid chamber (22) that contains the liquid additive (120), and an enveloping body (40), which has a member of plug (42) applicable with sealing effect in an opening (25) in a bottom wall (24) of the fluid chamber (22), including the cap member (42) a nozzle (60) directed away from the chamber of fluid (22), in which the cover member (20) is provided with primary means of application (30) that are applied with corresponding primary means of application arranged on the casing body (40) to allow the cover member (20) to be raised relative to the enclosure body (40) from a position closed, in which the cap member (42) closes the opening (25), to an open position, in which the cap member (42) is removed, at least partially, from the opening (25) for provide a communication path, in use, from the fluid chamber (22) through the nozzle (60) to the main liquid compartment (14). 2. The closing device according to the claim 1, wherein the shell (40) includes a inner wall (46) of the surrounding body adapted to adjust inside the neck (16) of the opening and in which the device closure (10) includes sealing means (54) that make a closure tight between the fluid chamber (22) and the inner wall (46) of the enveloping body, and in which the primary means of application on the cover member (20) include an internal thread (30) and the primary means of application on the enveloping body (40) include an external thread (50). 3. The closing device (10) according to the claim 2, wherein the cover member (20) includes a upper wall (26) of the lid, an outer wall (28) of the lid, on which the internal thread (30) is arranged, and a wall inside (32) of the cover, which extends from the upper wall (26) from the cover to the bottom wall (24) and which is arranged in the inside of the outer wall (28) of the lid, being defined the fluid chamber (22) by the upper wall (26) of the lid, the inner wall (32) of the lid and the bottom wall (24), and in which the wrapping body (40) comprises an outer wall (44) of the wrapping body on which the external thread is arranged (fifty). 4. The closing device according to the claim 3, wherein the outer wall (44) of the body envelope is provided with an internal secondary thread (52) adapted to be applied, in use, with an external secondary thread (18) arranged on the neck (16) of the opening of the container (12). 5. The closing device according to any of claims 3 to 4, wherein the enveloping body (40) further comprises a frame (48) that supports the cap member (42), so that the cap member (42) is disposed in the interior of the interior wall (46) of the enclosure and, in use, extends upward towards the fluid chamber (22). 6. The closing device according to any preceding claim, wherein the cap member (42) includes an internal fluid passage (70) that is sealed with respect to the fluid chamber (22) in the closed position and which is in fluid communication with the fluid chamber (22) in position open 7. The closing device according to the claim 6, wherein the cap member (42) includes a cylindrical outer surface (62) that is applied with means of sealed arranged on the bottom wall (24). 8. The closing device according to the claim 7, wherein the sealing means comprises: a top sealing element (66) that is tightly close against the cylindrical outer surface (62) of the cap member (42) when the cap member (20) is in the closed position and allowing the passage of fluid between the element upper seal (66) and cap member (42) when the cover member (20) is in the open position, and a lower sealing element (68) that is tightly close against the cylindrical outer surface (62) of the cap member (42) when the cap member (20) is in the closed and open positions. 9. The closing device according to the claim 8, wherein the stopper member (42) includes a passage internal fluid (70) extending to the outer surface cylindrical (62) in a position below the upper element of sealed (66) when the cover member (20) is in position closed, the internal fluid passage (70) being in communication with the nozzle (60). 10. The closing device according to any preceding claim, wherein the means of application Primary of the cover member (20) and of the housing (40) include mutually applicable guarantor means (86; 88) to prevent the rotation of the cover member (20) relative to the body envelope (40) beyond a limiting angle of rotation predetermined. 11. The closing device according to any preceding claim, wherein the fluid chamber (22) It contains an upper space of gas under pressure. 12. A container (12) that has a main liquid compartment (14), an opening that has a neck (16), and a closure device (10) according to any preceding claim, which closes said opening, wherein the enclosure body (40) of the closure device is secured to the neck (16) of the container (12). 13. The container according to claim 12, in which the enclosure body (40) comprises an outer wall (44) of the enveloping body located outside the neck (16) of the container (12) and provided with an internal secondary thread (52) applied with an external secondary thread (18) arranged on the neck (16) of the container (12). 14. The container according to any of the claims 12 to 13, wherein the enveloping body (40) further comprises an inner wall (46) of the enclosure arranged inside the neck (16) of the container (12) and provided with internal sealing means (54) for sealing against an outer surface of the inner wall (32) of the lid and external sealing means (56; 58) for sealing against an internal surface of the neck (16) of the opening. 15. A method to mount a device closure (10) containing additive liquid for introduction into a main liquid compartment (14) of a container (12), the method comprising the following steps: arrange a cover member (20), secure a bottom wall (24) to said member of cover (20) to define a fluid chamber (22) that can be put pressure invert the cover member (20) and introduce a additive liquid (120) in the fluid chamber (22) through a opening (25) in the bottom wall (24), disposing a wrapping body (40) that has a stopper member (42), including stopper member (42) a nozzle (60) directed away from the fluid chamber (22), fix the enclosure body (40) to the member of cover (20) by the relative axial movement of the housing (40) and of the cover member (20), both having means of corresponding primary application (30, 50) for this purpose, of so that the cap member (42) enters and closes the opening (25) on the bottom wall (24) of the fluid chamber (22), pressurize the fluid chamber (22), and store the closing device (10) with the pressure chamber (22) containing the additive liquid (120) for its post adjustment to the container (12). 16. The method according to claim 15, by the that the relative axial movement of the housing (40) and the cover member (20) is achieved by application of an external thread (50) on the housing (40) with an internal thread (30) on the cover member (20). 17. The method according to claim 15 or 16, in which the pressure stage is achieved by providing pressurized fluid at a passage (61) in said cap member (42), the passage (61) being in communication with valve means that prevent the release of pressurized fluid from the fluid chamber (22). 18. The method according to claim 17, in the that the valve means comprise a sealing element that is applied with the cap member (42), when the cap member (42) close the opening (25). 19. The method according to claim 17 or 18, in which the pressurized fluid is a gas and the gas forms a space upper in the fluid chamber (22) between 0% and 60% of the volume of said chamber (22). 20. The method according to any of the claims 15 to 19, including the additional step of ensuring the closing device (10) to a neck (16) of a container (12) which has a main liquid compartment (14) per application of an internal thread (30) on the housing (40) with a external thread (50) on the neck (16) of the container (12). 21. The method according to any of the claims 15 to 20, wherein the closure device is a closing device according to any of claims 1 to eleven. 22. A method of introducing an additive liquid (120) into a main liquid compartment (14) of a container (12) having an opening with a neck (16), the neck (16) having a device attached thereto closure (10) comprising a casing body (40) fixed to the neck (16) and a cover member (20), which defines a pressurized fluid chamber (22) fixed to the casing body (40), in which the closing device (10) is mounted and filled with the additive liquid (120) before fixing it to the neck (16), the method comprising the steps of raising the cover member (20) with respect to the housing (40), both having corresponding primary application means (30, 50) for this purpose, causing a plug member (42) disposed on said housing (40) to move relative to the cover member (20) from a closed position, wherein an opening (25) disposed in a bottom wall (24) of said fluid chamber (22) is closed by said cap member (42), to an open position, in which the cap member (42) is at least partially removed from the opening (25) to provide a communication path from the fluid chamber ( 22) through a nozzle (60) disposed in the plug member (42) and directed away from the fluid chamber (22) to the main fluid compartment (14), and release the additive liquid under pressure (120) from said fluid chamber (22) along said communication path (61) to said main compartment of
liquid (14). 23. The method according to claim 22, in the that during the lifting of the fluid chamber (22) in relation to the Enveloping body (40) keeps the seal between the chamber of fluid (22) and an inner wall (46) of the housing (40) arranged in the neck (16) of the container (12). 24. The method according to claim 22 or 23, wherein the cover member (20) is lifted by rotating said member (20) a first angle, so that the fluid chamber (22) is lifted by screw thread action in relation to enveloping body (40). 25. The method according to claim 24, in the that additional rotation of the cover member (20) is prevented more beyond the first angle in relation to the enveloping body (40) by the mutual application of surety means (86; 88) arranged on the cover member (20) and the enveloping body (40). 26. The method according to any of the claims 22 to 25, wherein the elevation of said member of lid (20) in relation to the housing (40) is achieved by application of an internal thread (30) on the cover member (20) with an external thread (50) on the housing (40). 27. The method according to any of the claims 22 to 26, which includes the additional step of making rotate the cover member (20) additionally to remove said member (20) and the casing body (40) of the container (12), by application of an internal secondary thread (52) on the body envelope with an external secondary thread (18) arranged on the neck (16) of the opening of the container (12). 28. The method according to any of the claims 22 to 27, wherein the communication path includes an internal fluid passage (70) in the cap member (42) extending from the nozzle (60) to a position on the surface of said cap member (42) that is in communication with the fluid chamber (22) when the cap member (42) is in The open position.