WO2010133819A1 - Closure for beverage containers - Google Patents

Closure for beverage containers Download PDF

Info

Publication number
WO2010133819A1
WO2010133819A1 PCT/GB2010/000819 GB2010000819W WO2010133819A1 WO 2010133819 A1 WO2010133819 A1 WO 2010133819A1 GB 2010000819 W GB2010000819 W GB 2010000819W WO 2010133819 A1 WO2010133819 A1 WO 2010133819A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure
tubular portion
beverage
wall
cap
Prior art date
Application number
PCT/GB2010/000819
Other languages
French (fr)
Inventor
Matthew Eric Smith
Karl Mondszein
Original Assignee
Carbonite Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carbonite Corporation filed Critical Carbonite Corporation
Publication of WO2010133819A1 publication Critical patent/WO2010133819A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/28—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials
    • B65D51/2807—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials the closure presenting means for placing the additional articles or materials in contact with the main contents by acting on a part of the closure without removing the closure, e.g. by pushing down, pulling up, rotating or turning a part of the closure, or upon initial opening of the container
    • B65D51/2857—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials the closure presenting means for placing the additional articles or materials in contact with the main contents by acting on a part of the closure without removing the closure, e.g. by pushing down, pulling up, rotating or turning a part of the closure, or upon initial opening of the container the additional article or materials being released by displacing or removing an element enclosing it

Definitions

  • the present invention relates generally to the carbonation of beverages and more particularly to containers for beverages which are to be carbonated and specifically to closures for such beverage containers.
  • Carbonated beverages are of course well known and numerous beverages are sold in carbonated form. Such beverages are accommodated within a tough and generally rigid container, e.g. of glass or polycarbonate material, and are generally carbonated by the injection of carbon dioxide only shortly before filling of the container with the beverage. The container closure or lid is then applied and the carbon dioxide is retained within the container, largely dissolved in the beverage, by the closure and by the container itself, which is under an internal pressure and must therefore be sufficiently tough to withstand that pressure.
  • a tough and generally rigid container e.g. of glass or polycarbonate material
  • a closure for a beverage container includes a tubular portion for connection to the edge of an aperture in the beverage container and a cap which is removably connected to the tubular portion and seals it, a first depending wall being connected to the tubular portion and a second depending wall being connected to the cap, a seal member being connected in a sealed manner to the first depending wall and being in sealing contact with the second wall, wherein the first and second walls and the seal member together define a reservoir for a chemical substance which is normally closed but when the cap is removed, the second wall is moved with respect to the first wall and the reservoir is opened.
  • the present invention approaches the problem of carbonating a beverage from a quite different direction to that which is conventional.
  • the closure in accordance with the present invention permits the container to be filled with an uncarbonated beverage and carbonation occurs at the time the beverage container is first opened, i.e. immediately before it is consumed.
  • This has a number of advantages. These advantages include the fact that expensive carbonation equipment is not required in the container filling plant and that rigid, bulky and thus heavy beverage containers are no longer necessary and the beverage container can be of light flimsy construction, e.g. of very thin plastic material or waxed paper or the like.
  • the reservoir defined by the closure will contain a chemical substance, in solid or liquid form, and a further chemical substance is contained in the beverage.
  • the cap When the cap is removed from the container, the second depending wall moves with it and this results in opening of the previously sealed reservoir.
  • the chemical substance within the reservoir then falls under the action of gravity into the beverage below it.
  • the two chemical substances then come into contact and they are selected such that they react together and form carbon dioxide.
  • the instantaneous liberation of carbon dioxide throughout the volume of the beverage results in carbonation of the beverage.
  • the two chemical substances can take a wide variety of different forms and it is of course important that they are both non-toxic and that they do not impair the flavour of the beverage.
  • Two suitable chemical substances are sodium bicarbonate and citric acid.
  • the substance stored within the reservoir may be in liquid or solid form and the seal of the reservoir need not be gas-tight but merely sufficient reliably to retain the chemical substance within it.
  • the seal should be substantially liquid-tight but if the substance within it is in solid, e.g. granular or powder, form, the seal need be neither gas-tight nor liquid-tight but merely sufficient to ensure that the solid material cannot leak out into the beverage during storage of the beverage container.
  • the seal must be sufficient to prevent the ingress of the beverage into the reservoir.
  • the first and second depending walls are preferably integral with the tubular portion and the cap, respectively, and may have any desired shape and all that is essential is that the two depending walls together with the seal member define a closed reservoir. It is, however, preferred that the first and second walls are tubular and this will of course result in the reservoir being of annular shape.
  • the closure may be secured to the beverage container in any desired manner but in the preferred and simplest embodiment of the invention, the outer surface of the tubular portion carries an external screw thread and the cap includes a depending annular skirt with an internal screw thread in mesh with the external screw thread.
  • the cap will include a closure plate, which is preferably integral with the annular skirt, and which extends over the area of the tubular portion so as to close it.
  • the closure plate may extend at the level of the top of the tubular portion, whereby the closure will present a flat upper surface. It is, however, also possible for the closure plate to be positioned such that the cap affords a recess in its upper surface. This recess may be used for accommodating promotional material, free gifts or the like.
  • the closure plate is integrally connected to the annular skirt by a cylindrical portion in contact with the inner surface of the first depending wall.
  • the tubular portion will in practice extend down into the beverage container to a level significantly below that at which the aperture is formed in the upper surface of the beverage container. This would mean that when the cap is removed and the beverage container is inverted so as to dispense its contents, a small volume of the beverage would remain trapped in the space defined by the upper wall of the beverage container and the tubular portion. This can, however, be prevented by the formation of one or more openings in the tubular portion, which is normally closed by the cylindrical portion.
  • This opening will in practice be provided at a position immediately adjacent the upper wall of the beverage container in which the aperture is formed and whilst it is normally closed by the cylindrical portion of the cap, it is of course not so closed when the cap is removed and beverage within the space between the upper wall of the beverage container and the tubular portion, when the beverage container is inverted, will then flow through the or each opening in the first wall and may thus be dispensed through the tubular portion.
  • the seal member may take a variety of forms and all that is important is that the second depending walls forms a substantial seal with it when the cap is in its normal, closed position but forms no seal with it when the cap is removed. If, as preferred, the two depending walls are of tubular shape, it is preferred that the seal member is an annular member of generally U shape. The first depending wall is connected in a sealed manner to the seal member and the second depending wall is in sealing contact with it, when the cap is in the normal closed position.
  • the outer surface of the tubular portion carries an outwardly extending annular flange for connection to the upper surface of the beverage container around an aperture formed in it.
  • the tubular portion will be inserted into the aperture in the beverage container and the undersurface of the annular flange will then be connected to the upper surface of the margin of the aperture in the beverage container, e.g. by hot plate welding or by adhesive, thereby connecting the closure to the beverage container in a sealed manner.
  • the invention also embraces a beverage container with an aperture in its upper surface in which is located a closure of the type referred to above, the outer surface of the tubular portion being connected to the container around the aperture, e.g. by way of the annular flange referred to above, the reservoir containing a first chemical substance and the container containing a beverage in which there is a second chemical substance, the first and second chemical substances being selected such that they react to form carbon dioxide.
  • Figure 1 is an axial sectional view of a closure for a beverage container shortly before installation in a beverage container;
  • Figure 2 shows the closure of Figure 1 in situ in an aperture in the upper wall of a beverage container
  • Figure 3 shows the closure of Figures 1 and 2 during removal of the cap.
  • the closure shown in the drawings includes a tubular portion 2, integral with whose lower end is a first depending wall 4 of tubular shape.
  • the tubular portion 2 and the tubular wall 4 are of the same diameter and thickness in this case and thus constitute a single, unitary tubular member.
  • Formed on the external surface of the upper portion of the tubular portion 2 is an external screw thread 6.
  • Integral with the outer surface of the tubular portion 2 shortly below the screw thread 6 is a radially outwardly extending flange 8, the purpose of which will be described below.
  • Formed in the tubular portion 2 shortly below the flange 8 are two or more openings 10, the purpose of which again will be discussed below.
  • the closure also includes a cap comprising a depending annular skirt 12 and a closure plate 14, which extends across the interior of the tubular portion 2 and normally closes it. Integral with the internal surface of the skirt 12 is an internal screw thread 16 in mesh with the external screw thread 6.
  • the closure plate 14 is situated at a level significantly below that of the upper edge of the skirt 12 and is connected to it by an integral tubular or cylindrical portion 18, which is in sliding contact with at least the lower portion of the tubular portion 2 and thus normally closes the openings 10.
  • the tubular portion 18 and the closure plate 14 together define an open-topped cylindrical recess 20, in which promotional items or the like may be accommodated.
  • the walls 4 and 22 thus define an annular space for the accommodation of a chemical substance 24, which, in this case, may be citric acid in powder form.
  • the lower end of the depending wall 4 is connected in a substantially sealed manner to the outer limb of an annular seal member 26 of U shape in cross-section.
  • This connection may be effected in any desired manner but in the present case is achieved by virtue of cooperating recesses and projections formed on the opposed surfaces, which constitute a snap connection.
  • Formed in the base of the seal member 26 adjacent its inner limb is a shallow annular recess, in which the lower end of the second depending wall 22 is accommodated.
  • the lower end of the depending wall 22 is substantially sealed to the seal member 26, in this case by virtue of an annular protuberance 28 on the inner surface of the inner limb of the seal member 26, which forms a contact seal with it.
  • a beverage container of which only a very small portion is shown at 30, is filled with a beverage which contains a second chemical substance in solution.
  • This second chemical substance which should also be non-toxic and should not impair the flavour of the beverage, is selected so that it will react with the first chemical substance to produce carbon dioxide.
  • the second chemical substance may conveniently be sodium bicarbonate.
  • Formed in the upper surface 32 of the beverage container is a circular aperture.
  • the flange is then connected to the upper surface 32 in any convenient manner, such as hot plate welding or adhesive.
  • the beverage container which is preferably of thin flexible material, such as plastic material or waxed paper, is then sealed.
  • the container is preferably of the type that is unable to withstand the internal pressure that would be generated if the beverage were carbonated but this is of no consequence since the beverage is of course uncarbonated.
  • the tubular wall 22 moves out of contact with the protuberance 28 and the annular reservoir containing the chemical substance 24 is then open to the interior of the container, as shown in Figure 3.
  • the chemical substance 24 then falls under the action of gravity into the beverage.
  • the two chemical substances now come into contact and immediately react to form, in this case, sodium citrate and carbon dioxide.
  • Sodium citrate is in any event commonly used in a number of beverages and has a slightly saline and slightly acidic flavour and is thus directly compatible with many beverages.
  • the carbon dioxide that is produced instantly carbonates the beverage which may then be dispensed into a drinking vessel or drunk directly from the tubular portion.

Abstract

A closure for a beverage container includes a tubular portion (2) for connection to the edge (32) of an aperture in the beverage container (30) and a cap (12, 14) which is removably connected to the tubular portion (2) and seals it. A first depending wall (4) is connected to the tubular portion (2) and a second depending wall (22) is connected to the cap. A seal member (26) is connected in a sealed manner to the first wall (4) and is in sealing contact with the second wall (22). The first and second walls (4, 22) and the seal member (26) together define a reservoir for a chemical substance (24) which is normally closed but when the cap is removed the second wall (22) is moved with respect to the first wall (4) and the reservoir is opened. When the closure is in use closing a beverage container, the reservoir is occupied by a first chemical substance and a second chemical substance is dissolved in the beverage. When the cap is removed, a first chemical substance drops into the beverage and the two chemical substances are selected such that they then react to produce carbon dioxide, thereby carbonating the beverage.

Description

CLOSURE FOR BEVERAGE CONTAINERS
The present invention relates generally to the carbonation of beverages and more particularly to containers for beverages which are to be carbonated and specifically to closures for such beverage containers.
Carbonated beverages are of course well known and numerous beverages are sold in carbonated form. Such beverages are accommodated within a tough and generally rigid container, e.g. of glass or polycarbonate material, and are generally carbonated by the injection of carbon dioxide only shortly before filling of the container with the beverage. The container closure or lid is then applied and the carbon dioxide is retained within the container, largely dissolved in the beverage, by the closure and by the container itself, which is under an internal pressure and must therefore be sufficiently tough to withstand that pressure.
However, it is not always convenient or possible to provide a container which is capable of withstanding the relatively high pressure prevailing within a carbonated beverage container and it is not always convenient or economically possible to provide carbonation apparatus of the conventional type.
It is therefore the object of the invention to provide a beverage container and a closure for such a container which is constructed and arranged so that the beverage within the container is uncarbonated during transport and storage but which, when the closure is opened results automatically in the immediate carbonation of the beverage. According to the present invention, a closure for a beverage container includes a tubular portion for connection to the edge of an aperture in the beverage container and a cap which is removably connected to the tubular portion and seals it, a first depending wall being connected to the tubular portion and a second depending wall being connected to the cap, a seal member being connected in a sealed manner to the first depending wall and being in sealing contact with the second wall, wherein the first and second walls and the seal member together define a reservoir for a chemical substance which is normally closed but when the cap is removed, the second wall is moved with respect to the first wall and the reservoir is opened.
Thus the present invention approaches the problem of carbonating a beverage from a quite different direction to that which is conventional. Thus instead of carbonating a beverage before it is placed into its container, the closure in accordance with the present invention permits the container to be filled with an uncarbonated beverage and carbonation occurs at the time the beverage container is first opened, i.e. immediately before it is consumed. This has a number of advantages. These advantages include the fact that expensive carbonation equipment is not required in the container filling plant and that rigid, bulky and thus heavy beverage containers are no longer necessary and the beverage container can be of light flimsy construction, e.g. of very thin plastic material or waxed paper or the like. In use, the reservoir defined by the closure will contain a chemical substance, in solid or liquid form, and a further chemical substance is contained in the beverage. When the cap is removed from the container, the second depending wall moves with it and this results in opening of the previously sealed reservoir. The chemical substance within the reservoir then falls under the action of gravity into the beverage below it. The two chemical substances then come into contact and they are selected such that they react together and form carbon dioxide. The instantaneous liberation of carbon dioxide throughout the volume of the beverage results in carbonation of the beverage. The two chemical substances can take a wide variety of different forms and it is of course important that they are both non-toxic and that they do not impair the flavour of the beverage. Two suitable chemical substances are sodium bicarbonate and citric acid. When these two substances are brought into contact in the solution, they immediately react and carbon dioxide is produced. The substance stored within the reservoir may be in liquid or solid form and the seal of the reservoir need not be gas-tight but merely sufficient reliably to retain the chemical substance within it. Thus if the chemical substance within it is liquid, the seal should be substantially liquid-tight but if the substance within it is in solid, e.g. granular or powder, form, the seal need be neither gas-tight nor liquid-tight but merely sufficient to ensure that the solid material cannot leak out into the beverage during storage of the beverage container. However, if the reservoir extends into the beverage, the seal must be sufficient to prevent the ingress of the beverage into the reservoir. The first and second depending walls are preferably integral with the tubular portion and the cap, respectively, and may have any desired shape and all that is essential is that the two depending walls together with the seal member define a closed reservoir. It is, however, preferred that the first and second walls are tubular and this will of course result in the reservoir being of annular shape.
The closure may be secured to the beverage container in any desired manner but in the preferred and simplest embodiment of the invention, the outer surface of the tubular portion carries an external screw thread and the cap includes a depending annular skirt with an internal screw thread in mesh with the external screw thread. In addition to the depending annular skirt, the cap will include a closure plate, which is preferably integral with the annular skirt, and which extends over the area of the tubular portion so as to close it. The closure plate may extend at the level of the top of the tubular portion, whereby the closure will present a flat upper surface. It is, however, also possible for the closure plate to be positioned such that the cap affords a recess in its upper surface. This recess may be used for accommodating promotional material, free gifts or the like. In this event, it is preferred that the closure plate is integrally connected to the annular skirt by a cylindrical portion in contact with the inner surface of the first depending wall.
The tubular portion will in practice extend down into the beverage container to a level significantly below that at which the aperture is formed in the upper surface of the beverage container. This would mean that when the cap is removed and the beverage container is inverted so as to dispense its contents, a small volume of the beverage would remain trapped in the space defined by the upper wall of the beverage container and the tubular portion. This can, however, be prevented by the formation of one or more openings in the tubular portion, which is normally closed by the cylindrical portion. This opening will in practice be provided at a position immediately adjacent the upper wall of the beverage container in which the aperture is formed and whilst it is normally closed by the cylindrical portion of the cap, it is of course not so closed when the cap is removed and beverage within the space between the upper wall of the beverage container and the tubular portion, when the beverage container is inverted, will then flow through the or each opening in the first wall and may thus be dispensed through the tubular portion. The seal member may take a variety of forms and all that is important is that the second depending walls forms a substantial seal with it when the cap is in its normal, closed position but forms no seal with it when the cap is removed. If, as preferred, the two depending walls are of tubular shape, it is preferred that the seal member is an annular member of generally U shape. The first depending wall is connected in a sealed manner to the seal member and the second depending wall is in sealing contact with it, when the cap is in the normal closed position.
It is preferred that the outer surface of the tubular portion carries an outwardly extending annular flange for connection to the upper surface of the beverage container around an aperture formed in it. In practice, the tubular portion will be inserted into the aperture in the beverage container and the undersurface of the annular flange will then be connected to the upper surface of the margin of the aperture in the beverage container, e.g. by hot plate welding or by adhesive, thereby connecting the closure to the beverage container in a sealed manner.
The invention also embraces a beverage container with an aperture in its upper surface in which is located a closure of the type referred to above, the outer surface of the tubular portion being connected to the container around the aperture, e.g. by way of the annular flange referred to above, the reservoir containing a first chemical substance and the container containing a beverage in which there is a second chemical substance, the first and second chemical substances being selected such that they react to form carbon dioxide.
Further features and details of the invention will be apparent from the following description of one specific embodiment in accordance with the invention, which is given by way of example only with reference to the accompanying diagrammatic drawings, in which:
Figure 1 is an axial sectional view of a closure for a beverage container shortly before installation in a beverage container;
Figure 2 shows the closure of Figure 1 in situ in an aperture in the upper wall of a beverage container; and
Figure 3 shows the closure of Figures 1 and 2 during removal of the cap.
The closure shown in the drawings includes a tubular portion 2, integral with whose lower end is a first depending wall 4 of tubular shape. The tubular portion 2 and the tubular wall 4 are of the same diameter and thickness in this case and thus constitute a single, unitary tubular member. Formed on the external surface of the upper portion of the tubular portion 2 is an external screw thread 6. Integral with the outer surface of the tubular portion 2 shortly below the screw thread 6 is a radially outwardly extending flange 8, the purpose of which will be described below. Formed in the tubular portion 2 shortly below the flange 8 are two or more openings 10, the purpose of which again will be discussed below.
The closure also includes a cap comprising a depending annular skirt 12 and a closure plate 14, which extends across the interior of the tubular portion 2 and normally closes it. Integral with the internal surface of the skirt 12 is an internal screw thread 16 in mesh with the external screw thread 6. The closure plate 14 is situated at a level significantly below that of the upper edge of the skirt 12 and is connected to it by an integral tubular or cylindrical portion 18, which is in sliding contact with at least the lower portion of the tubular portion 2 and thus normally closes the openings 10. The tubular portion 18 and the closure plate 14 together define an open-topped cylindrical recess 20, in which promotional items or the like may be accommodated. Integral with the underside of the closure plate 14 is a second depending wall 22 of tubular shape with a diameter somewhat less than that of the depending wall 4. The walls 4 and 22 thus define an annular space for the accommodation of a chemical substance 24, which, in this case, may be citric acid in powder form. The lower end of the depending wall 4 is connected in a substantially sealed manner to the outer limb of an annular seal member 26 of U shape in cross-section. This connection may be effected in any desired manner but in the present case is achieved by virtue of cooperating recesses and projections formed on the opposed surfaces, which constitute a snap connection. Formed in the base of the seal member 26 adjacent its inner limb is a shallow annular recess, in which the lower end of the second depending wall 22 is accommodated. The lower end of the depending wall 22 is substantially sealed to the seal member 26, in this case by virtue of an annular protuberance 28 on the inner surface of the inner limb of the seal member 26, which forms a contact seal with it.
In use, a beverage container, of which only a very small portion is shown at 30, is filled with a beverage which contains a second chemical substance in solution. This second chemical substance, which should also be non-toxic and should not impair the flavour of the beverage, is selected so that it will react with the first chemical substance to produce carbon dioxide. In the present case, that is to say with the first chemical substance constituting citric acid, the second chemical substance may conveniently be sodium bicarbonate. Formed in the upper surface 32 of the beverage container is a circular aperture. After the filling process is complete, the closure described above is inserted through the aperture, as shown in Figure 1, until the underside of the radial flange 8 is in contact with the upper surface 32 of the container around the aperture, as shown in Figure 2. The flange is then connected to the upper surface 32 in any convenient manner, such as hot plate welding or adhesive. The beverage container, which is preferably of thin flexible material, such as plastic material or waxed paper, is then sealed. The container is preferably of the type that is unable to withstand the internal pressure that would be generated if the beverage were carbonated but this is of no consequence since the beverage is of course uncarbonated. When it is desired to consume the beverage, the cap is rotated in the conventional manner and thus moves progressively upwards to the position shown in Figure 3. As it does so, the lower end of the depending wall 22 moves upwardly also in sliding contact with the protuberance 28 on the seal member 26. However, after a certain amount of movement has occurred, the tubular wall 22 moves out of contact with the protuberance 28 and the annular reservoir containing the chemical substance 24 is then open to the interior of the container, as shown in Figure 3. The chemical substance 24 then falls under the action of gravity into the beverage. The two chemical substances now come into contact and immediately react to form, in this case, sodium citrate and carbon dioxide. Sodium citrate is in any event commonly used in a number of beverages and has a slightly saline and slightly acidic flavour and is thus directly compatible with many beverages. The carbon dioxide that is produced instantly carbonates the beverage which may then be dispensed into a drinking vessel or drunk directly from the tubular portion. When the container is fully inverted, a certain proportion of the beverage will be located in the space between the external surface of the tubular member constituted by the tubular portion 2 and the depending wall 4 and the internal surface of the container 30. This liquid will, however, flow through the openings 10, which are situated only shortly below the upper wall of the beverage container, into the interior of the tubular portion 2 and the container may therefore be completely emptied, notwithstanding the presence of the container closure.

Claims

1. A closure for a beverage container including a tubular portion for connection to the edge of an aperture in the beverage container and a cap which is removably connected to the tubular portion and seals it, a first depending wall being connected to the tubular portion and a second depending wall being connected to the cap, a seal member being connected in a sealed manner to the first depending wall and being in sealing contact with the second depending wall, wherein the first and second walls and the seal member together define a reservoir for a chemical substance which is normally closed but when the cap is removed the second wall is moved with respect to the first wall and the reservoir is opened.
2. A closure as claimed in Claim 1 in which the first and second walls are tubular and the reservoir is thus annular.
3. A closure as claimed in Claim 1 or 2 in which the outer surface of the tubular portion carries an external screw thread and the cap includes a depending annular skirt with an internal screw thread in mesh with the external screw thread.
4. A closure as claimed in Claim 3 in which the cap includes a closure plate which is integral with the annular skirt and extends over the area of the tubular portion, the closure plate being positioned such that the cap affords a recess in its upper surface.
5. A closure as claimed in Claim 4 in which the closure plate is integrally connected to the annular skirt by a cylindrical portion in contact with the inner surface of the first wall.
6. A closure as claimed in any one of the preceding claims in which an opening is formed in the tubular portion, which is normally closed by the cylindrical portion.
7. A closure as claimed in Claim 2 in which the seal member is an annular member of generally U shape.
8. A closure as claimed in any one of the preceding claims in which the outer surface of the tubular portion carries an outwardly extending annular flange for connection to the upper surface of a beverage container around an aperture formed in it.
9. A beverage container with an aperture in its upper surface in which is located a closure as claimed in any one of the preceding claims, the outer surface of the tubular portion being connected to the container around the aperture, the reservoir containing a first chemical substance and the container containing a beverage in which there is a second chemical substance, the first and second chemical substances being selected such that they react to form carbon dioxide.
PCT/GB2010/000819 2009-05-18 2010-04-23 Closure for beverage containers WO2010133819A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0908516A GB0908516D0 (en) 2009-05-18 2009-05-18 Closures for beverage containers
GB0908516.8 2009-05-18

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WO2010133819A1 true WO2010133819A1 (en) 2010-11-25

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7413077A (en) * 1974-10-03 1976-04-06 Leer Koninklijke Emballage HOLDER WITH SCREW CAP.
US20060219736A1 (en) * 2005-03-29 2006-10-05 L'oreal Device for placing two products in contact
EP1795457A1 (en) * 2004-09-29 2007-06-13 Yoshino Kogyosho Co., Ltd. Mixing vessel for two-part fluid or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7413077A (en) * 1974-10-03 1976-04-06 Leer Koninklijke Emballage HOLDER WITH SCREW CAP.
EP1795457A1 (en) * 2004-09-29 2007-06-13 Yoshino Kogyosho Co., Ltd. Mixing vessel for two-part fluid or the like
US20060219736A1 (en) * 2005-03-29 2006-10-05 L'oreal Device for placing two products in contact

Also Published As

Publication number Publication date
GB0908516D0 (en) 2009-06-24

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