US20200047987A1 - A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device - Google Patents

A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device Download PDF

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Publication number
US20200047987A1
US20200047987A1 US16/340,092 US201716340092A US2020047987A1 US 20200047987 A1 US20200047987 A1 US 20200047987A1 US 201716340092 A US201716340092 A US 201716340092A US 2020047987 A1 US2020047987 A1 US 2020047987A1
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US
United States
Prior art keywords
capsule
preparation device
beverage preparation
enclosing member
projection
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US16/340,092
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English (en)
Inventor
Ralf Kamerbeek
Arend Hendrik Groothornte
Hielke Dijkstra
Erik Pieter van Gaasbeek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Douwe Egberts BV
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Koninklijke Douwe Egberts BV
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Application filed by Koninklijke Douwe Egberts BV filed Critical Koninklijke Douwe Egberts BV
Priority claimed from PCT/NL2017/050659 external-priority patent/WO2018067009A1/en
Assigned to KONINKLIJKE DOUWE EGBERTS B.V. reassignment KONINKLIJKE DOUWE EGBERTS B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIJKSTRA, HIELKE, Groothornte, Arend Hendrik, VAN GAASBEEK, ERIK PIETER, KAMERBEEK, RALF
Publication of US20200047987A1 publication Critical patent/US20200047987A1/en
Abandoned legal-status Critical Current

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    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents
    • B65D85/8064—Sealing means for the interface with the processing machine
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F5/00—Coffee; Coffee substitutes; Preparations thereof
    • A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
    • A23F5/26—Extraction of water-soluble constituents
    • A23F5/262—Extraction of water-soluble constituents the extraction liquid flows through a stationary bed of solid substances, e.g. in percolation columns
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3623—Cartridges being employed
    • A47J31/3628—Perforating means therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3623—Cartridges being employed
    • A47J31/3633—Means to perform transfer from a loading position to an infusing position
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/40—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea
    • A47J31/407—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea with ingredient-containing cartridges; Cartridge-perforating means
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/24—Inserts or accessories added or incorporated during filling of containers
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package

Definitions

  • the invention relates to a capsule containing a substance for the preparation of a potable beverage by extracting and/or dissolving the substance by means of supplying a fluid under pressure into the capsule, wherein the capsule comprises an aluminum capsule body having a central capsule body axis, said aluminum capsule body being provided with a capsule body bottom, a side wall and an outwardly extending flange comprising a curled outer edge, said outwardly extending flange extending transverse to the central capsule body axis, the capsule further comprising an aluminum cover attached to the outwardly extending flange, the cover hermetically closing the capsule, wherein the capsule further comprises a sealing member at the outwardly extending flange for providing a fluid sealing contact with an enclosing member of a beverage preparation device if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of a closing member of the beverage preparation device, such as an extraction plate of the beverage preparation device, such that the outwardly
  • the invention also relates to a system for preparing a potable beverage from a capsule using a fluid supplied under pressure into the capsule comprising:
  • a beverage preparation device comprising an enclosing member for receiving the capsule, wherein the enclosing member comprises fluid injection means for supplying fluid under pressure into the capsule, wherein the beverage preparation device further comprises a closing member, such as an extraction plate, for closing the enclosing member of the beverage preparation device, wherein the enclosing member of the beverage preparation device further comprises an annular element having a central annular element axis and a free contact end, the free contact end of the annular element being provided with a plurality of radially extending open grooves;
  • a capsule containing a substance for the preparation of a potable beverage by extracting and/or dissolving the substance by means of supplying a fluid under pressure into the capsule wherein the capsule comprises an aluminum capsule body having a central capsule body axis, said aluminum capsule body being provided with a capsule body bottom, a side wall and an outwardly extending flange comprising a curled outer edge, said outwardly extending flange extending transverse to the central capsule body axis, the capsule further comprising an aluminum cover attached to the outwardly extending flange, the cover hermetically closing the capsule, wherein the capsule further comprises a sealing member at the outwardly extending flange for providing a fluid sealing contact with an enclosing member of a beverage preparation device if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of a closing member of the beverage preparation device.
  • the invention relates to the use of a capsule in a beverage preparation device comprising an enclosing member for receiving the capsule, wherein the enclosing member comprises fluid injection means for supplying fluid under pressure into the capsule, wherein the beverage preparation device further comprises a closing member, such as an extraction plate, for closing the enclosing member of the beverage preparation device, wherein the enclosing member of the beverage preparation device further comprises an annular element having a central annular element axis and a free contact end, the free contact end of the annular element being provided with a plurality of radially extending open grooves; wherein the capsule contains a substance for the preparation of a potable beverage by extracting and/or dissolving the substance by means of the fluid supplied under pressure into the capsule by the fluid injection means of the beverage preparation device, wherein the capsule comprises an aluminum capsule body having a central capsule body axis, said aluminum capsule body being provided with a capsule body bottom, a side wall and an outwardly extending flange comprising a curled outer
  • Such a capsule, system and use are e.g. known from EP-B-1 700 548.
  • the capsule is provided with a sealing member having the shape of a step, i.e. a sudden increase of the diameter of the side wall of the capsule, and the enclosing member of this known system has a sealing surface acting on the sealing member to provide deflection of the sealing member, the sealing surface being inclined so that the deflection of the sealing member is an inwards and downwards deformation of the step.
  • the enclosing member comprises a capsule holder and a manually operated or an automatic mechanism for relative displacement of the enclosing member and the capsule holder.
  • the manually operated or an automatic mechanism applies a force on the sealing member of the capsule when the enclosing member closes on the capsule holder. This force should ensure the fluid tight seal between the enclosing member and the capsule. Because the manually operated or an automatic mechanism is arranged to be moved relative to the base, the sealing capabilities of the system can depend on the pressure of the fluid injected by the fluid injection means. If the pressure of the fluid increases, the force between the sealing member of the capsule and the free end of the enclosing member increases too and thereby the force between the sealing member of the capsule and the free end of the enclosing member increases also. Such a system is described further on.
  • the sealing member of the capsule must be arranged such that upon reaching the maximum fluid pressure in the enclosing member the sealing member should still provide a fluid sealing contact between the enclosing member and the capsule.
  • the sealing member must also be arranged such that prior to, or at the start of, brewing when the pressure of the fluid in the enclosing member outside the capsule is relatively low, the sealing member also provides a fluid sealing contact between the enclosing member and the capsule. If at the start of brewing, there would not exist a fluid sealing contact between the capsule and the enclosing member, leakage will occur.
  • this increased fluid pressure outside the capsule also provides an increased fluid pressure inside the capsule which is essential if the capsule is provided with a cover which is arranged to tear open on relief members of the capsule holder (also called an extraction plate or closing member) of the beverage preparation device under the influence of fluid pressure in the capsule.
  • the sealing member is a member which is very critical in design. It should be able to provide a fluid sealing contact between the enclosing member and the capsule at a relatively low fluid pressure if only a relatively small force is applied on the sealing member by means of the free end of the enclosing member but it should also provide a fluid sealing contact at a much higher fluid pressure in the enclosing member outside the capsule if a higher force is applied by means of the free end of the enclosing member to the sealing member of the capsule.
  • the sealing member In particular when the free contact end of the enclosing member is provided with racially extending open grooves which act as air inlet passage once the force between the enclosing member and the capsule holder is released so that it is easier for a user to take out the capsule, the sealing member must also be able to ‘close’ the racially extending open grooves to provide an effective seal.
  • the invention has also as an object to provide an alternative system for preparing a potable beverage from a capsule and to provide an alternative use of a capsule in a beverage preparation device.
  • the sealing member is integral with the outwardly extending flange and includes an annular projection including a projection top projecting axially towards the capsule body bottom from an inner projection foot radially outside of an inner sealing member portion and an outer projection foot racially inside of an outer flange portion, and the flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body; or the flat outer flange portion and the flat inner flange portion are in line and a racially outer wall of said projection is oriented transverse to the flat outer flange portion, the sealing member is relatively easy to manufacture and provides a satisfactory sealing to the free contact end provided with racially extending open grooves.
  • a transition from the projection to the flat outer flange portion of the outwardly extending flange may for instance have an internal radius of less than 0.15 mm or less than 0.12 mm.
  • the bottom of the annular trough axially spaced from the outer projection foot away from the bottom of the capsule body allows the flat outer flange portion to be pushed towards the closing member which causes the projection to be forced outwardly due to tilting and “rolling off” of the projection, thereby increasing the racial contact pressure exerted against the free contact end of the annular element, which contributes to achieving a satisfactory seal.
  • the flat outer flange portion and the flat inner flange portion are in line and that the racially outer wall of said projection is oriented transverse to the flat outer flange portion, also causes the projection to be forced outwardly due to tilting and “rolling off” of the projection, thereby increasing the racial contact pressure exerted against the free contact end of the annular element, which contributes to achieving a satisfactory seal.
  • a sealing member in which a flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body.
  • this known capsule is made from a laminate material comprising a ductile structural layer formed from aluminum or an aluminum alloy and a further resilient layer formed from a polymer. During compression (i.e. during closing of the enclosing member) the polymer layer aids the conforming of the sealing member to the shape of the annular element of the enclosing member.
  • the outer wall of the projection comprises three distinct sections—an upper section which, prior to insertion, is perpendicular to the flat inner flange portion, a mid-section that is angled at an angle 6 of from 20 to 80°, preferably 60°, to the central capsule body axis and a lower section that includes the flat outer flange portion before merging into the curled outer edge of the flange.
  • This geometry of the outer wall of the projection helps to stiffen the distal end of the side wall but also at least to some extent prevents the projection being urged outwardly.
  • a sealing member is disclosed (with reference to FIGS. 4 and 5 thereof) in which a flat outer flange portion and a flat inner flange portion are in line.
  • this known capsule is made from a laminate material comprising a ductile structural layer formed from aluminum or an aluminum alloy and a further resilient layer formed from a polymer. During compression (i.e. during closing of the enclosing member) the polymer layer aids the conforming of the sealing member to the shape of the annular element of the enclosing member.
  • the projection of the capsule according to this known embodiment has a generally triangular shape, such that the outer wall of the projection encloses an obtuse angle with regard to the flat outer flange portion. Due to this known geometry during closing of the enclosing member the projection is driven downwards, such that the projection is not urged outwardly.
  • the projection is configured such that its projection top exerts an outward radial force on the free contact end of the annular element if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of the closing member of the beverage preparation device.
  • a fluid sealing contact means that 0-6%, preferably 0-4%, more preferably 0-2.5% of the total fluid supplied to the enclosing member for preparing the beverage may leak away due to leakage between the free contact end and the sealing member of the capsule.
  • the sealing member is deformable such that, in use, closure of the enclosing member causes the axial spacing between the flat outer flange portion and the flat inner flange portion to be reduced in particular the sealing member is deformable such that, in use, closure of the enclosing member causes the axial spacing between the flat outer flange portion and the flat inner flange portion to be eliminated.
  • the axial distance between the flat inner flange portion and the flat outer portion is between 0.5 and 0.7 mm or is 0.6 mm or is half of the largest dimension of the curled outer edge.
  • a radially inner wall of said projection is preferably oriented at an angle between 93° and 110°, preferably between 95° and 98°, and most preferably at an angle of 97° with regard to the flat inner flange portion. If the flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body, it is preferred that a radially outer wall of said projection is oriented at an angle between 93° and 110°, preferably between 95° and 98°, and most preferably at an angle of 97° with regard to the flat outer flange portion. In this manner, upper portions of the projection are effectively supported against collapsing and inward “rolling off” of the projection, similar to a deep drawing operation is facilitated.
  • a transition from the projection to a radially outwardly projecting portion of the outwardly extending flange has an internal radius of less than 0.15 mm and preferably less than 0.12 mm. Compressive movement induces plastic buckling of the projection, increasing the outward contact force applied to the free end of the enclosing member.
  • the invention is in particular advantageous when in an embodiment of a capsule the capsule contains an extractable product as substance for the preparation of a potable beverage, the extractable product preferably being 5-20 grams, preferably 5-10 grams, more preferably 5-7 grams of an extractable product, such as roasted and ground coffee.
  • the outer diameter of the outwardly extending flange of the capsule is larger than the diameter of the bottom of the capsule.
  • the outer diameter of the outwardly extending flange is approximately 37.1 mm and the diameter of the bottom of the capsule is about 23.3 mm.
  • the invention is in particular advantageous when in an embodiment of a capsule the thickness of the aluminum capsule body is between 20 to 200 micrometer, preferably between 80 and 110 micrometer, most preferably 90 or 100 micrometer, such that it is deformed easily if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of a closing member of the beverage preparation device.
  • the invention is in particular advantageous when in an embodiment of a capsule the thickness of the aluminum cover is 15 to 65 micrometer, preferably 30-45 micrometer and more preferably 39 micrometer.
  • the wall thickness of the aluminum cover is smaller than the wall thickness of the aluminum capsule body.
  • the cover can be attached to the flat inner flange portion and/or to the flat outer flange portions.
  • the aluminum cover is arranged to tear open on a closing member of the beverage preparation device, such as an extraction plate of the beverage preparation device under the influence of fluid pressure in the capsule.
  • the curled outer edge of the outwardly extending flange has a largest dimension of about 1.2 millimeter.
  • the invention is in particular beneficial for capsules of which the inner diameter of the free end of the side wall of the aluminum capsule body is about 29.5 mm.
  • the distance between the free end of the side wall of the aluminum capsule body and an outermost edge of the outwardly extending flange can be about 3.8 millimeter.
  • the preferred height of the aluminum capsule body is about 28.4 mm.
  • the aluminum capsule body is truncated, wherein preferably the side wall of the aluminum capsule body encloses an angle with a line transverse to the central capsule body axis of about 97.5°.
  • the bottom of the aluminum capsule body has a largest inner diameter of about 23.3 mm. It is preferred that the bottom of the aluminum capsule body is truncated, preferably having a bottom height of about 4.0 mm and that the bottom further has a generally flat central portion opposite the cover having a diameter of about 8.3 mm.
  • the height of the sealing member portion to be contacted first by the free end of the enclosure member when the enclosure member is closed is at least about 0.1 mm, more preferably at least 0.2 mm and most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm.
  • the capsule comprises an inner surface, and wherein on the inner surface of at least the side wall of the capsule an inner coating is provided.
  • an inner coating is provided on the inner surface of at least the side wall of the capsule.
  • the inner coating facilitates the deep drawing process.
  • the aluminum cover of the capsule is attached to the outwardly extending flange by means of a sealing lacquer it is then in particular advantageous when the inner coating being composed of the same material as the sealing lacquer.
  • the sealing member is free from an inner coating in order to prevent crumbling off of the inner coating from the sealing member.
  • the capsule comprises an outer surface, wherein on the outer surface of the capsule a color lacquer is provided.
  • a color lacquer is provided on the outer surface of the capsule.
  • an outer coating is provided on an outer surface of the color lacquer.
  • the sealing member is free from a color lacquer (and consequently the outer coating) in order to prevent crumbling off of the color lacquer/outer coating from the sealing member.
  • the projection has an extreme top end extending around the capsule axis at a diameter of 31.9 to 32.4 mm.
  • an outer edge area of the free end of the enclosing member is firmly pressed against the projection.
  • the flat inner flange portion preferably has a racial width that is substantially larger than the radial thickness of the free contact end portion of the annular element, so that a clearance is left between said free contact end portion of the annular element and the side wall of the capsule body.
  • the projection top may constitute a portion of the projection, for instance a half, a third or a quarter of the projection that is axially most distal from the feet of the projection.
  • the invention is particularly suitable for use in a system according to the invention wherein, in use, the maximum fluid pressure in the enclosing member of the beverage preparation device is in the range of 6-20 bar, preferably between 12 and 18 bar. Even at such high pressures a satisfactory seal between capsule and beverage preparation device can be obtained.
  • the system is arranged such that, in use, during brewing, a free end of the enclosing member of the beverage preparation device exerts a force F 2 on the sealing member of the capsule to provide a fluid sealing contact between the outwardly extending flange of the capsule and the enclosing member of the beverage preparation device, wherein F 2 is in the range of 500-1500 N preferably in the range of 750-1250 N when the fluid pressure P 2 in the enclosing member of the beverage preparation device outside the capsule is in the range of 6-20 bar, preferably between 12 and 18 bar.
  • the system is arranged such that, in use, prior to or at the start of brewing, a free end of the enclosing member of the beverage preparation device exerts a force F 1 on the sealing member of the capsule to provide a fluid sealing contact between the outwardly extending flange of the capsule and the enclosing member of the beverage preparation device, wherein F 1 is in the range of 30-150 N preferably in the range of 40-150 N, more preferably 50-100 N, when the fluid pressure P 1 in the enclosing member of the beverage preparation device outside the capsule is in the range of 0.1-4 bar, preferably between 0.1-1 bar.
  • the longest tangential width of each groove (top to top, i.e. equal to the groove to groove pitch) is 0.9-1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, wherein a maximal height of each groove in an axial direction of the enclosing member of the beverage preparation device is 0.01-0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm, most preferred 0.05 mm and wherein the number of grooves is 90 to 110, preferably 96.
  • the radial width of the annular end surface at the location of the grooves may for instance be 0.05-0.9 mm, preferably 0.2-0.7 mm and more preferably 0.3-0.55 mm.
  • the invention is in particular suitable when applied to an embodiment of a system according to the invention in which during use when the closing member of the beverage preparation device closes the enclosing member of the beverage preparation device at least the free contact end of the enclosing member of the beverage preparation device can move relative to the closing member of the beverage preparation device under the effect of the pressure of the fluid in the enclosing member of the beverage preparation device towards the closing member of the beverage preparation device for applying the maximum force between the flange of the capsule and the free end of the enclosing member of the beverage preparation device.
  • the enclosing member may comprise a first part and a second part wherein the second part comprises the free contact end of the enclosing member wherein the second part can move relative to the first part between a first and second position.
  • the second part can move from the first positon towards the second position in the direction of the closing member under the influence of fluid pressure in the enclosing member.
  • the force F 1 as discussed above may be reached if the second part is in the first position with a fluid pressure P 1 .
  • the force F 2 as discussed above may be reached if the second part is moved towards the second position under the influence of the fluid pressure P 2 in the enclosing member.
  • FIG. 1 shows a schematic representation of an embodiment of a system according to the invention
  • FIG. 2 in a perspective view, shows an embodiment of a beverage preparation device of a system according to the invention showing the free contact end of the enclosing member of the beverage preparation device with the plurality of radially extending open grooves;
  • FIG. 3A in schematic cross section, shows an embodiment of a capsule according to the invention before use
  • FIG. 3B schematically shows an enlarged detail of a the capsule of FIG. 3A showing the outwardly extending flange and the sealing member;
  • FIG. 3C schematically shows an enlarged detail of the outwardly extending flange of the capsule in FIGS. 3A and 3B after use;
  • FIG. 4 is an enlarged cross-sectional view of an embodiment of a sealing member at the outwardly extending flange of a capsule according to the invention in which the flat outer flange portion is axially spaced from the flat inner flange portion towards the bottom of the capsule body, and wherein a transition from the projection to the flat outer flange portion of the outwardly extending flange has an internal radius of less than 0.15 mm, preferably less than 0.12 mm, in combination with an end portion of the enclosing member and a closing member of a beverage making apparatus; and
  • FIG. 5 is an enlarged cross-sectional view of an embodiment of a sealing member at the outwardly extending flange of a capsule according to the invention in which the flat outer flange portion and the flat inner flange portion are in line and wherein a radially outer wall of said projection is oriented transverse to the flat outer flange portion, in combination with an end portion of the enclosing member and a closing member of a beverage making apparatus.
  • FIG. 1 shows a schematic representation, in cross sectional view, of an embodiment of a system 1 for preparing a potable beverage from a capsule using a fluid supplied under pressure into the capsule.
  • the system 1 comprises a capsule 2 , and a beverage preparation device 4 .
  • the device 4 comprises enclosing member 6 for holding the capsule 2 .
  • the device 4 further comprises a closing member, such as an extraction plate, 8 for supporting the capsule 2 .
  • the beverage preparation device 4 further comprises a fluid injection means 10 for supplying an amount of a fluid, such as water, under a pressure in the range of 6-20 bar, preferably between 12 and 18 bar, to the exchangeable capsule 2 .
  • a fluid such as water
  • the exchangeable capsule 2 comprises an aluminum capsule body 12 having a central capsule body axis 12 A and an aluminum cover 14 .
  • the meaning of ‘aluminum’ is understood to also include aluminum alloy.
  • the aluminum capsule body 12 comprises a side wall 16 , a bottom 18 closing the side wall 16 at a first end, and a outwardly extending flange 20 extending outwardly of the circumferential wall 16 at a second end opposite the bottom 18 .
  • the side wall 16 , the bottom 18 and the cover 14 enclose an inner space 22 comprising a substance for the preparation of a potable beverage by extracting and/or dissolving the substance.
  • the substance is an extractable product for the preparation of a potable beverage, the extractable product preferably being 5-20 grams, preferably 5-10 grams, more preferably 5-7 grams of roasted and ground coffee for the preparation of a single beverage.
  • the capsule is initially sealed, i.e. is hermetically closed prior to use.
  • the system 1 of FIG. 1 comprises bottom piercing means 24 for piercing the bottom 18 of the capsule 2 for creating at least one entrance opening 25 in the bottom 18 for supplying the fluid to the extractable product through the entrance opening 25 .
  • the system 1 of FIG. 1 further comprises cover piercing means 26 , here embodied as protrusions of the closing member 8 , for piercing the cover 14 of the capsule 2 .
  • the cover piercing means 26 may be arranged to tear the cover 14 once a (fluid) pressure inside the inner space 22 exceeds a threshold pressure and presses the cover 14 against the cover piercing means 26 with sufficient force.
  • the aluminum cover 14 thus is arranged to tear open on the closing member 8 of the beverage preparation device under the influence of fluid pressure in the capsule.
  • the capsule 2 further comprises a sealing member 28 integral with the outwardly extending flange, in FIGS. 1, 3A and 3B indicated as a general box but more detailed described with regard to FIG. 4 , which sealing member 28 is arranged for providing a fluid sealing contact with the enclosing member 6 if the capsule 2 is positioned in the enclosing member 6 and the enclosing member 6 is closed by means of the extraction plate 8 , such that the outwardly extending flange 20 of the capsule 2 and at least a portion of the sealing member 28 are sealingly engaged between the enclosing member 6 and the extraction plate 8 .
  • the enclosing member 6 of the beverage preparation device comprises an annular element 41 having a central annular element axis 41 A and a free contact end 30 .
  • the free contact end 30 of the annular element 41 is provided with a plurality of radially extending open grooves 40 .
  • the plurality of radially extending open grooves 40 are uniformly spaced relative to each other in tangential direction of the free contact end 30 of the annular element 41 .
  • each groove 40 is 0.9-1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, wherein a maximal height of each groove 40 in an axial direction of the enclosing member 6 is 0.01-0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm, and most preferred 0.05 mm.
  • the number of grooves 40 lies in the range of 90 to 110, preferably 96.
  • the radial width of the free end at the location of the grooves is 0.05-0.9 mm, more specifically 0.2-0.7 mm, more specifically 0.3-0.55 mm.
  • FIGS. 3A and 3B An embodiment of a capsule according to the invention is shown more detailed in FIGS. 3A and 3B .
  • the outer diameter ODF of the outwardly extending flange 20 is larger than the diameter DB of the bottom 18 of the capsule 2 .
  • the outer diameter ODF of the outwardly extending flange 20 is approximately 37.1 mm and the diameter DB of the bottom 18 is about 23.3 mm.
  • the thickness of the aluminum capsule body 12 is such that it is deformed easily if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of a closing member of the beverage preparation device, preferably the thickness of the aluminum capsule body is 100 micrometer, but in other embodiments the thickness can be 20 to 200 micrometer.
  • the wall thickness of the aluminum cover 14 is 39 micrometer.
  • the wall thickness of the aluminum cover 14 is preferably smaller than the thickness of the aluminum capsule body 12 .
  • the side wall 16 of the aluminum capsule body 12 has a free end 42 opposite the bottom 18 .
  • the inner diameter IDF of the free end 42 of the side wall 16 of the aluminum capsule body 12 is about 29.5 mm.
  • the outwardly extending flange 20 extends from that free end 42 in a direction transverse to the central capsule body axis 12 A.
  • the outwardly extending flange 20 comprises a curled outer edge 43 which is beneficial for obtaining a seal between the capsule and the enclosing member.
  • the curled outer edge 43 of the outwardly extending flange 20 has a largest dimension of about 1.2 millimeter and axially extends at both sides of a flat outer flange portion 56 .
  • the axial distance between the flat inner flange portion 52 and the flat outer flange portion 56 preferably is about half of the largest dimension of the curled outer edge 43 .
  • the distance DIF between the free end 42 of the side wall 16 of the aluminum capsule body 12 and an inner edge 43 A of the curled outer edge 43 is about 2.7 mm, while the distance DOF between the free end 42 of the side wall 16 of the aluminum capsule body 12 and an outermost edge 43 B of the outwardly extending flange 20 is about 3.8 millimeter.
  • the radius about the central capsule body axis of the inner edge 43 A of the curled outer edge 43 is preferably at least 32 mm.
  • the sealing member 28 is positioned between the free end 42 of the side wall 16 of the aluminum capsule body 12 and the inner edge 43 A of the curled outer edge 43 of the outwardly extending flange.
  • the sealing member 28 is indicated as a general box, but will be described in more detail below.
  • the height of the sealing member portion to be contacted first by the free end of the enclosure member when the enclosure member is closed is at least about 0.1 mm, more preferably at least 0.2 mm and most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm for providing a correct seal.
  • the aluminum capsule body 12 is truncated.
  • the side wall 16 of the aluminum capsule body 12 encloses an angle A with a line transverse to the central capsule body axis 12 A of about 97.5°.
  • the bottom 18 of the aluminum capsule body 12 has a largest inner diameter DB of about 23.3 mm.
  • the bottom 18 of the aluminum capsule body 12 is also truncated, and in the shown embodiment has a bottom height BH of about 4.0 mm.
  • the bottom 18 further has a generally flat central portion 18 A opposite the cover 14 , which central portion 18 A has a diameter DEE of about 8.3 mm and in which central portion 18 A the entrance opening(s) 25 may be made.
  • the entrance openings may also be made in the truncated portion between the central portion 18 A and the side wall 16 .
  • the total height TH of the aluminum capsule body 12 of the capsule is about 28.4 mm.
  • the system 1 shown in FIG. 1 is operated as follows for preparing a cup of a potable beverage, in the present example coffee, wherein the substance is roasted and ground coffee.
  • the capsule 2 is placed in the enclosing member 6 .
  • the extraction plate 8 is brought into contact with the capsule 2 .
  • the bottom piercing means 24 pierce the bottom 18 of the capsule 2 for creating the entrance openings 25 .
  • the fluid here hot water under pressure, is supplied to the extractable product in the inner space 22 through the entrance openings 25 .
  • the water will wet the coffee grounds and extract the desired substances to form the coffee beverage.
  • the pressure inside the capsule 2 will rise.
  • the rise in pressure will cause the cover 14 to deform and be pressed against the lid piercing means 26 of the extraction plate.
  • the tear strength of the cover 14 will be surpassed and the cover 14 will rupture against the lid piercing means 26 , creating exit openings.
  • the prepared coffee will drain from the capsule 2 through the exit openings and outlets 32 (see FIG. 1 ) of the extraction plate 8 , and may be supplied to a container such as a cup (not shown).
  • the system 1 is arranged such that prior to or at the start of brewing, the free end 30 of the enclosing member 6 exerts a force F 1 on the sealing member 28 of the capsule 2 to provide a fluid sealing contact between the outwardly extending flange 20 of the capsule 2 and the enclosing member 6 of the beverage preparation device, wherein F 1 is in the range of 30-150 N preferably 40-150 N, more preferably 50-100 N, when the fluid pressure P 1 in the enclosing member of the beverage preparation device outside the capsule is in the range of 0.1-4 bar, preferably 0.1-1 bar.
  • the free end 30 of the enclosing member 6 exerts a force F 2 on the sealing member 28 of the capsule 2 to provide a fluid sealing contact between the outwardly extending flange 20 of the capsule 2 and the enclosing member 6 , wherein the force F 2 is in the range of 500-1500 N, preferably in the range of 750-1250 N, when the fluid pressure P 2 in the enclosing member 6 of the beverage preparation device outside the capsule 2 is in the range of 6-20 bar, preferably between 12 and 18 bar.
  • the free contact end of enclosing member 6 can move relative to the extracting plate 8 under the effect of the pressure of the fluid in the enclosing member 6 device towards the extraction plate 8 for applying the maximum force F 2 between the outwardly extending flange 20 and the free end 30 of the enclosing member 6 .
  • This movement can take place during use, i.e. in particular at the start of brewing and during brewing.
  • the enclosing member 6 has a first part 6 A and a second part 6 B wherein the second part comprises the free contact end 30 .
  • the second part 6 B can move relative to the first part GA between a first and second position.
  • the second part 6 B can move from the first positon towards the second position in the direction of the closing member 8 under the influence of fluid pressure in the enclosing member 6 .
  • the force F 1 as discussed above may be reached if the second part 6 B is in the first position with a fluid pressure P 1 .
  • the force F 2 as discussed above may be reached if the second part GB is moved towards the second position under the influence of the fluid pressure P 2 in the enclosing member 6 .
  • the sealing member 28 of the capsule according to the invention undergoes a plastic deformation and closely conforms to the grooves 40 of the free contact end 30 and thus provides a fluid sealing contact between the enclosing member 6 and the capsule 3 at a relatively low fluid pressure during start up of brewing but also provides a fluid sealing contact at the much higher fluid pressure in the enclosing member outside the capsule during brewing.
  • This close conformation to the grooves 40 of the enclosing member is indicated in FIG. 3C which shows the capsule 2 of the invention after use, and which clearly indicates that the outwardly extending flange 20 comprises deformations 40 ′ which conform to the grooves 40 of the enclosing member.
  • the axial distance between the flat inner flange portion 52 and the flat outer flange portion 56 is between 0.5 and 0.7 mm, preferably the axial distance is 0.6 mm.
  • a sealing member 28 forms an additional bearing at the outwardly extending flange 20 of the capsule body 12 .
  • the sealing member 28 and the remainder of the capsule body 12 are made of the same plate material.
  • the sealing member 28 has a single projection 50 , projecting axially from inner and outer foot portions 53 , 54 in an axial direction 55 towards the bottom of the capsule body 12 .
  • a trough having a flat inner flange portion 52 is located inwardly adjacent to the projection 50 .
  • the flat inner flange portion 52 of the trough is positioned at an axial distance from the outer foot 54 of the projection 50 in a direction away from the bottom of the capsule body 12 and also at an axial distance away from a flat outer flange portion 56 of the outwardly extending flange 20 between the sealing member 28 and the curled outer edge 43 .
  • the projection 50 and the flat inner flange portion 52 of the trough are arranged such that the free contact end 60 of the annular element 41 is contacted by the flat inner flange portion 52 of the trough if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by the closing member 8 .
  • the distance between the projection 50 and a side wall 16 of the capsule body 12 is preferably 0.9-1.25 mm, which allows the inner ridge or free contact end 60 of the enclosing member 6 of widely used and commercially available beverage preparation devices (such as the Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) to be reliably squeezed against the projection 50 with the side wall 16 in close proximity thereto, but slightly spaced from the side wall 16 .
  • beverage preparation devices such as the Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza
  • the projection 50 has a projection top constituting a portion of the projection, for instance a half, a third or a quarter of the projection that is axially most distal from the feet 53 , 54 of the projection 50 .
  • the projection 50 is configured such that its projection top exerts a radial force on the free contact end 30 of the annular element 41 if the capsule is positioned in the enclosing member 6 of the beverage preparation device and the enclosing member is closed by means of the closing member 8 of the beverage preparation device.
  • the free contact end 30 of the enclosing member 6 contacts the projection 50 .
  • This causes the capsule to be centered relative to the enclosing member 6 together with the contact between the free contact end 60 and the projection.
  • a large contact force is exerted as projection 50 is deformed.
  • Hoop stress in the projection 50 causes counter forces to be evenly distributed circumferentially so that an evenly distributed sealing pressure is achieved.
  • the free contact end 60 of the enclosing member 6 has an inner circumferential surface portion 71 and an outer circumferential surface portion 70 contacting the projection 50 .
  • the radially extending open grooves 40 are deeper in the inner surface portion 71 than in the outer surface portion 70 or the grooves may be absent in the outer surface portion 70 .
  • the projection 50 is firmly and accurately pressed against the relatively smooth outer surface portion 70 of the free contact end 60 .
  • the flat outer flange portion 56 is axially spaced from the inner projection foot 53 in an axial direction 55 towards the bottom of the capsule body 12 , the flat outer flange portion 56 can be pushed towards the closing member 8 relative to the outside foot 53 of the projection, which causes the projection 50 to be forced outwardly due to tilting and deformation of the projection 50 , thereby increasing the radial contact pressure exerted against the free contact end 30 of the annular element 41 . Simultaneously, the flat outer flange portion 56 is lowered and may contact the closing member 8 .
  • the closure and further compression of the brew chamber onto the sealing ring is supported by the build-up of hydraulic pressure.
  • the compressive force builds, the flat outer flange portion 56 is pushed downwards by the mechanical and hydraulic loading until the flat outer flange portion 56 touches the closing member 8 .
  • Motion of the sealing member 28 as well as deformation of the sealing member shape result in additional contact pressure being transferred to the primary sealing face. Since much of the deformation occurs plastically, the contact region conforms effectively to sealing area of the enclosure member and allows some misalignment and manufacturing tolerances to be accommodated.
  • a further increase of the axial (here vertical) force causes a slight further deformation of the sealing member 28 .
  • the cover 14 is attached to the flat inner flange portion 52 .
  • This (preferably aluminum) cover 14 also contributes to the sealing properties of the sealing member 28 , since it tries to retain the projection 50 axially inwards against racially outward forces exerted thereon by the free end 30 of the enclosing member 6 .
  • the radially inner wall 50 A of the projection 50 is oriented at an angle between 93° and 110° preferably between 95° and 98°, and most preferably at an angle of 97° with regard to the flat inner flange portion 52 and a racially outer wall 50 B of the projection 50 is also oriented at an angle between 93° and 110°, preferably between 95° and 98°, and most preferably at an angle of 97° with regard to the flat outer flange portion 56 .
  • the transition from the projection 50 to the flat inner flange portion 52 of the outwardly extending flange 20 has an internal radius of less than 0.15 mm, preferably less than 0.12 mm.
  • the racially inner wall 50 A of the projection 50 is oriented substantially parallel to the capsule body axis, so that upper portions of the projection 50 are effectively supported against collapsing and inward “rolling off” of the projection 50 , similar to a deep drawing operation is facilitated.
  • the transition from the projection 50 to the radially outwardly projecting portion 56 of the outwardly extending flange 20 has the said small internal radius, e.g. of less than 0.15 mm and preferably less than 0.12 mm.
  • the capsule body 12 can be manufactured efficiently, in particular when deep drawing the capsule from plate material.
  • some enclosing members can have one or more bridges between outer and inner ridges 80 , 81 of the annular element 41 .
  • Such bridges constitute an interruption of an annular head space 62 into which the projection 50 is wedged during the third stage. Leakage in particular at the transitions where, in circumferential sense, a bridge begins and ends is diminished since the projection 50 is shaped to roll and buckle racially outwards, so that excess sealing member material is locally displaced away from the seal between the projection 50 and the annular element 6 , thereby reducing interference with this seal and allowing a substantially continuous seal along a line passing underneath the bridge.
  • FIG. 5 a further embodiment of a sealing member 28 at the outwardly extending flange 20 of the capsule 2 according to the invention, in which the flat outer flange portion 56 and the flat inner flange portion 52 are in line and wherein the radially outer wall 50 B of the projection 50 is oriented transverse to the flat outer flange portion 56 will be described in more detail with regard to FIG. 5 .
  • the axial distance between the flat inner flange portion 52 and the flat outer flange portion 56 in this embodiment is thus zero.
  • FIG. 5 shows a second embodiment of a sealing member 28 forming an additional bearing at the outwardly extending flange 20 of the capsule body 12 .
  • the sealing member 28 and the remainder of the capsule body 12 are made of the same plate material.
  • the sealing member 28 has a single projection 50 , projecting axially from inner and outer foot portions 53 , 54 in an axial direction 55 towards the bottom of the capsule body 12 .
  • a trough having a flat inner flange portion 52 is located inwardly adjacent to the projection 50 .
  • the flat inner flange portion 52 of the trough is positioned at the same height as the outer foot 54 of the projection 50 and also at the same height as the flat outer flange portion 56 of the outwardly extending flange 20 between the sealing member 28 and the curled outer edge 43 .
  • the projection 50 and the flat inner flange portion 52 of the trough are arranged such that the free contact end 60 of the annular element 41 is contacted by the flat inner flange portion 52 of the trough if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by the closing member 8 .
  • the distance between the projection 50 and a side wall 16 of the capsule body 12 is preferably 0.9-1.25 mm, which allows the inner ridge or free contact end 60 of the enclosing member 6 of widely used and commercially available beverage preparation devices (such as the Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) to be reliably squeezed against the projection 50 with the side wall 16 in close proximity thereto, but slightly spaced from the side wall 16 .
  • beverage preparation devices such as the Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza
  • the projection 50 has a projection top constituting a portion of the projection, for instance a half, a third or a quarter of the projection that is axially most distal from the feet 53 , 54 of the projection 50 .
  • the projection 50 is configured such that its projection top exerts a radial force on the free contact end 30 of the annular element 41 if the capsule is positioned in the enclosing member 6 of the beverage preparation device and the enclosing member is closed by means of the closing member 8 of the beverage preparation device.
  • the free contact end 60 of the enclosing member 6 contacts the projections 50 .
  • This causes the capsule to be centered relative to the enclosing member 6 , while the projection 50 exerts a large contact force as it is deformed.
  • the relatively high counter pressure provides a particularly reliable seal with high pressure resistance.
  • the exerted radial load is counteracted by hoop stress in the projection 50 , which is evenly distributed circumferentially so that an evenly distributed sealing pressure is achieved.
  • the free contact end 60 of the enclosing member 6 has an inner circumferential surface portion 71 and an outer circumferential surface portion 70 contacting the projection 50 .
  • the racially extending open grooves 40 are deeper in the inner surface portion 71 than in the outer surface portion 70 or the grooves may be absent in the outer surface portion 70 .
  • the projection 50 is firmly and accurately pressed against the relatively smooth outer surface portion 70 of the free contact end 60 .
  • the closure and further compression of the brew chamber onto the sealing ring is supported by the build-up of hydraulic pressure.
  • the inner wall 50 A of the projection 50 is bent. This tilting and deformation of the sealing member shape result in additional contact pressure being transferred to the primary sealing face. Since much of the deformation occurs plastically, the contact region conforms effectively to sealing area and allows some misalignment and manufacturing tolerances to be accommodated.
  • the cover 14 extends to the flat outer flange portion 56 and is attached to both the flat inner flange portion 52 and the flat outer flange portion 56 .
  • the (preferably aluminum) cover 14 also contributes to the sealing properties of the sealing member 28 , since it tries to retain the projection 50 in its position against radially outward forces exerted thereon by the free end 60 of the enclosing member 6 .
  • the cover 14 could in another embodiment be attached to the flat outer flange portion 56 only. In a further embodiment the cover 14 could only extend to the flat inner flange portion 52 and be attached thereto.
  • the radially inner wall 50 A of the projection 50 is oriented at an angle between 93° and 110°, preferably between 95° and 98°, and most preferably at an angle of 97° with regard to the flat inner flange portion 52 .
  • the racially inner wall 50 A of the projection 50 can also be oriented substantially parallel to the capsule body axis, so that upper portions of the projection 50 are effectively supported against collapsing and inward “rolling off” of the projection 50 , similar to a deep drawing operation is facilitated.
  • the transitions from the projection 50 to the flat inner flange portion 52 and/or to the flat outer flange portion 56 as of the outwardly extending flange 20 has an internal radius of less than 0.15 mm, preferably less than 0.12 mm.
  • the capsule body 12 can be manufactured efficiently, in particular when deep drawing the capsule from plate material.
  • some enclosing members can have one or more bridges between outer and inner ridges 80 , 81 of the annular element 41 . Such bridges constitute an interruption of an annular head space 62 into which the projection 50 is wedged during the third stage.

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US16/340,092 2016-10-07 2017-10-06 A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device Abandoned US20200047987A1 (en)

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NL2017592 2016-10-07
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NL2019254A NL2019254B9 (en) 2016-10-07 2017-07-14 A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
PCT/NL2017/050659 WO2018067009A1 (en) 2016-10-07 2017-10-06 A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device

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US17/517,590 Active 2037-10-10 US11866249B2 (en) 2016-10-07 2021-11-02 System for preparing a potable beverage
US17/993,812 Pending US20230087885A1 (en) 2016-10-07 2022-11-23 Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device

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US10940995B2 (en) 2015-05-15 2021-03-09 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US11198556B2 (en) 2015-05-15 2021-12-14 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US11198557B2 (en) 2016-10-07 2021-12-14 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage
US11352199B2 (en) 2015-05-15 2022-06-07 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US11540659B2 (en) 2017-07-14 2023-01-03 Koninklijke Douwe Egberts B.V. Assembly of a capsule and a brew chamber
US11673738B2 (en) 2016-05-13 2023-06-13 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US11679929B2 (en) 2016-05-13 2023-06-20 Koninklijke Douwe Egberts B.V. Capsule and a system for preparing a potable beverage from such a capsule
US11760561B2 (en) 2015-05-15 2023-09-19 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US11772883B2 (en) 2015-05-15 2023-10-03 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device

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ES1222909Y (es) * 2018-12-05 2019-04-04 Gisbertplast S L Cápsula para la preparación de una bebida
NL2022269B1 (en) 2018-12-20 2020-07-15 Douwe Egberts Bv System for preparing a beverage from a capsule using a fluid supplied under pressure into the capsule and a capsule for use in such a system
USD911319S1 (en) * 2019-01-04 2021-02-23 Samsung Electronics Co., Ltd. Modular display unit
EP3702298A1 (de) * 2019-03-01 2020-09-02 Delica AG Kapsel und system für die zubereitung eines flüssigen lebensmittels
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US11760561B2 (en) 2015-05-15 2023-09-19 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
US10940995B2 (en) 2015-05-15 2021-03-09 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
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US11198557B2 (en) 2016-10-07 2021-12-14 Koninklijke Douwe Egberts B.V. Capsule, a system for preparing a potable beverage
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