US20140178538A1 - Beverage filter cartridge - Google Patents
Beverage filter cartridge Download PDFInfo
- Publication number
- US20140178538A1 US20140178538A1 US14/195,662 US201414195662A US2014178538A1 US 20140178538 A1 US20140178538 A1 US 20140178538A1 US 201414195662 A US201414195662 A US 201414195662A US 2014178538 A1 US2014178538 A1 US 2014178538A1
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- United States
- Prior art keywords
- cup
- cartridge
- filter
- pod
- interior
- 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.)
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Classifications
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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
- B65D85/8055—Means for influencing the liquid flow inside the package
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- 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
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4403—Constructional details
- A47J31/446—Filter holding means; Attachment of filters to beverage-making apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
- B65B29/022—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into capsules
-
- 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
- B65D85/8046—Pods, i.e. closed containers made only of filter paper or similar material
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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
- B65D85/8061—Filters
Definitions
- the present disclosure relates generally to the field of beverage filter cartridges, and more specifically, to disposable beverage filter cartridges usable with coffee machines or similar brewing devices to produce beverages such as coffee and the like.
- One embodiment relates to a beverage filter cartridge comprising a cup having at least one sidewall; a cover sealed to the cup to form an interior; and a filter pod provided within the interior and having a substance provided therein suitable for brewing a beverage; wherein at least a portion of the sidewall comprises a helical channel extending about the cup.
- a beverage filter cartridge comprising a cup having an open top, a closed bottom, and a sidewall extending between the top and the bottom, the top, bottom, and sidewall defining an interior; a filter disposed within the interior such that a space is maintained between the filter and the bottom; and a lid coupled to the top and configured to retain the filter within the interior; wherein the filter is not coupled to the cup or the lid.
- FIG. 1 is an exploded perspective view of a beverage filter cartridge according to an exemplary embodiment.
- FIG. 2 is a cutaway perspective view of a cup for a beverage filter cartridge according to an exemplary embodiment.
- FIG. 3 is a cross-sectional view of a beverage filter cartridge according to an exemplary embodiment.
- FIG. 4 shows various filter pods according to exemplary embodiments.
- FIG. 5 is a cutaway perspective view of a beverage filter cartridge according to an exemplary embodiment.
- FIG. 6 is a schematic representation of a process for making beverage filter cartridges according to an exemplary embodiment.
- FIGS. 7-14 are schematic representations of beverage filter cartridges and beverage filter cartridge components according to various exemplary embodiments.
- Some commercially available brewing devices are configured to receive a disposable filter cartridge.
- the cartridge is inserted into a brewing cavity of the brewing device.
- the brewing device includes a brewing chamber to receive the cartridge, and access to the brewing chamber may be via a moveable handle, a cover, etc.
- a user places the cartridge into the brewing chamber of the brewing device and initiates the brewing process.
- a first piercing member of the brewing device penetrates the top of the cartridge and introduces a fluid, such as hot water, into the interior of the cartridge, which typically contains a substance such as coffee granules. The hot water passes through the coffee granules, extracting coffee flavoring from the coffee granules before passing through a filter material within the cartridge.
- a second piercing member of the brewing device pierces the bottom of the cartridge and provides an exit path for the brewed beverage to leave the cartridge and be directed to a cup or other container used for consumption by users.
- beverage filter cartridges usable with brewing devices such as coffee machines to make, for example, single servings of coffee or other beverages (e.g., tea, etc.).
- beverage filter cartridges of the present disclosure may provide several advantages over more conventional cartridges.
- a beverage filter cartridge 10 (e.g., a container, package, canister, pod, etc.) is shown according to an exemplary embodiment.
- Cartridge 10 is configured for use with a coffee machine or similar brewing device 20 such that, as further discussed herein, a top piercing member 22 of brewing device 20 pierces the top of cartridge 10 and provides a supply of a liquid (e.g., hot, pressurized water or other liquid, etc.), and a bottom piercing member 24 of brewing device 20 pierces the bottom of cartridge 10 and is configured to receive the brewed liquid (e.g., a coffee beverage) after passing through the interior of cartridge 10 .
- a liquid e.g., hot, pressurized water or other liquid, etc.
- Cartridge 10 may be usable with a variety of brewing machines, and is generally a disposable cartridge configured for one-time usage. Alternatively, cartridge 10 or one or more components thereof may be configured to be re-used by consumers (e.g., a reusable cup, etc.).
- cartridge 10 includes a cup 12 (e.g., a container, holder, etc.), a filter bag, or pod 14 (e.g., a filter pod, filter assembly, etc.), and a lid 16 (e.g., a cover, top, film, foil, etc.).
- pod 14 holds a substance 18 (e.g., coffee grounds, tea, an additive, etc.) and is sealed within cup 12 by way of lid 16 .
- cup 12 and lid 16 are sealed together such that they provide a sealed interior (e.g., via a hermetic seal, etc.) that maintains the freshness of substance 18 within pod 14 .
- the pod may be “compacted” within the interior of cup 12 when lid 16 is sealed to cup 12 .
- Substance 18 may include substances such as coffee grounds/granules, tea, an additive (e.g., creamer, sugar, etc.) and the like, which are usable to extract flavorings, etc. into a liquid such as hot water to produce a brewed beverage.
- the substance may partially or totally dissolve in the liquid during the brewing cycle.
- Lid 16 is a generally flat, planar member that is configured to seal, or adhere, to the upper portion of cup 12 .
- lid 16 may be or comprise a metal foil (e.g., aluminum, etc.), while in other embodiments, lid 16 may be or comprise a paper-based lid (e.g., cardboard, etc.).
- a polymer material is integrated in with paper-based materials to facilitate melting/bonding (e.g., welding, etc.) of lid 16 to cup 12 .
- lid 16 has an outer shape that generally conforms to or follows the shape of the upper portion of cup 12 .
- one or more portions of lid 16 may overhang cup 12 , e.g., to provide a pull tab, label, or other feature.
- lid 16 and/or cup 12 may include alignment features such as indents, detents, tabs, etc. configured to align cartridge 10 within device 20 .
- Pod 14 includes a filter 28 and substance 18 .
- Filter 28 may be any suitable filter material used in brewing coffee and similar beverages (e.g., a paper-based filter material or the like). Filter 28 may be provided with a generally cylindrical shape to conform to the interior of cup 12 .
- Substance 18 may include coffee grounds or any other suitable substance usable in brewing a beverage for consumption. Generally, as hot water passes through substance 18 , a flavor (e.g., a coffee flavor, etc.) is extracted from the substance.
- pod 14 includes a basket-shaped portion that receives the coffee grounds or other substance, and a generally flat top that is sealed to the basket portion.
- pod 14 may be inserted into cup 12 “top down” to help ensure a relatively flat surface for top piercing member 22 to penetrate.
- pod 14 may be partitioned to include separate compartments for different substances.
- pod 14 may be configured such that a first compartment is filled with coffee grounds or granules, and a second compartment may be filled with an additive such as a creamer, sugar, etc.
- the shapes, relative sizes, and positioning of the compartments may be varied according to various alternative embodiments.
- Cup 12 includes a top 30 and a bottom 32 with an annular sidewall 34 extending between top 30 and bottom 32 .
- Top 30 may include a lip or flange portion 35 suitable for providing a surface to which lid 16 may be sealed, bonded, etc.
- Top 30 may be designed to facilitate insertion/removal of cartridge 10 to/from an appropriate brewing device (e.g., by providing a graspable portion, by providing alignment features, etc.).
- Bottom 32 may have a generally flat surface 33 surrounding a center stand-off 36 (e.g., a post, dimple, projection, raised portion, etc.).
- Sidewall 34 may include an annular rib 38 (e.g., an extension, a ridge, protrusion, etc.) and a helix portion 42 (e.g., a helical gallery or portion, spiraling portion, etc.) extending from below top 30 to above rib 38 .
- annular rib 38 e.g., an extension, a ridge, protrusion, etc.
- helix portion 42 e.g., a helical gallery or portion, spiraling portion, etc.
- void 40 it is desirable to maintain an empty space, or void 40 between the bottom of pod 14 and bottom surface 33 of cup 12 .
- Void 40 permits hot water provided by top piercing member 22 to flow through and exit from pod 14 , and further prevents bottom piercing member 24 from piercing pod 14 , which could result in unwanted portions of substance 18 (e.g., coffee grounds) becoming mixed with the brewed beverage.
- substance 18 e.g., coffee grounds
- void 40 comprises approximately 20 percent of the interior volume of cup 12 , while pod 14 takes up the remaining 80 percent of the interior volume of cup 12 .
- the relative volumes of pod 14 and void 40 may be varied to suit a particular substance being brewed, a desirable strength of beverage, etc.
- cup 12 is configured to support pod 14 offset from surface 33 by way of center standoff 36 and/or annular rib 38 to provide void 40 .
- pod 14 does not need to be coupled (e.g., sealed, etc.) to cup 12 or lid 16 in order to provide the appropriate space between the bottom of pod 14 and surface 33 of cup 12 to form void 40 .
- standoff 36 is sized to have cross-section large enough to not act like a needle and puncture pod 14 , and small enough to allow a sufficient volume of brewed beverage to enter void 40 and not interfere with bottom piercing member 24 .
- annular rib 38 may extend about the perimeter of cup 12 to assist in maintaining the position of pod 14 within cup 12 .
- annular rib may extend about cup 12 at a height such that pod 14 tends to rest on, or abut, annular rib 38 , and the top of pod 14 is substantially even with top 30 of cup 12 .
- annular rib 38 is shown to have a generally rounded profile, other shapes and/or profiles may be used according to other exemplary embodiments (e.g., squared-off profiles, etc.).
- the position of annular rib 38 along the height of sidewall 34 may vary according to various exemplary embodiments.
- helical portion 42 may extend from below/adjacent top 30 to above/adjacent annular rib 38 .
- helical portion 42 may extend along the entire height of sidewall 34 .
- the number of “revolutions” of the channel forming the helical portion may vary according to various exemplary embodiments.
- helical portion 42 may provide several benefits to the brewing process, including generation of a cyclonic-pressure system around the perimeter of cup 12 that promotes even fluid distribution through substance 18 .
- sidewall 34 comprises a series of annular channels arrayed vertically along the sidewall rather than a single helical channel.
- helical portion 42 extends along sidewall 34 along the entire height of pod 14 when pod 14 is positioned within cup 12 .
- pod 14 may extend slightly below helical portion 42 .
- Helical portion 42 is configured such that as hot water or other fluid passes through pod 14 , the sides of pod 14 do not “stick” to, or completely conform to the grooves, or channels 44 , of helical portion 42 .
- the channels 44 of helical portion 42 are sufficiently deep that a fluid path is formed between pod 14 and sidewall 34 of cup 12 as hot water passes down through pod 14 and cup 12 .
- portions of fluid e.g., hot water/coffee extract
- helical portion 42 creates a lower pressure region toward the outer portions of cup 12 (e.g. a “cyclonic pressure system” around the perimeter of the cup), thereby promoting a more even distribution/flow of liquid through the granules of substance 18 .
- a “cyclonic pressure system” around the perimeter of the cup
- more efficient extraction from substance 18 may result relative to more traditional brewing techniques, providing a “stronger” beverage while using the same amount of substance/granules.
- the initial pressure of the fluid forces the fluid toward the sidewalls of cup 12 .
- Pod 14 tends to “swell” due the introduction of the fluid, and pod 14 then tends to “grip” the helical portion of cup 12 such that the fluid flows in a circular motion (e.g., a circumferential flow path) around the helical portion of cup 12 . Fluid may thus exit through the side and/or bottom of pod 14 .
- the helical portion of the cup provides a “crushable” cartridge that is configured to be crushed, or compacted post-use, thereby minimizing the volume of waste material for consumers.
- cup 12 may slightly compress during use, providing a visual indication to users that the filter has been used and may be discarded.
- cup 12 may be made from a polymer material (e.g., polypropylene, etc.), such that cup 12 provides a barrier from moisture, oxygen, carbon dioxide, etc. during transportation, sale, etc. of cartridge 10 and maintains the freshness of substance 18 within pod 14 .
- Bottom surface 33 of cup 12 is configured to be pierceable by an appropriate piercing member, or needle, such as bottom piercing member 24 .
- cup 12 may be a blow-molded or thermoformed component. In other embodiments, any other suitable manufacturing technique may be utilized in making cup 12 (e.g., injection molding, other forming processes, or combinations thereof).
- pod 14 is shown according to an exemplary embodiment, and includes a basket 41 and a cover 43 that form filter 28 (discussed above) when holding substance 18 .
- Basket 41 is a generally basket shaped member configured to hold a volume of substance 18 such as coffee grounds or granules, etc.
- Cover 43 is a generally flat member configured to be sealed to basket 41 to seal the substance within filter 28 .
- basket 41 and cover 43 may be made from the same or similar filter material (e.g., a paper-based filter material, etc.). As indicated above, the size, shape, and/or material of pod 14 may be varied to suit a particular application.
- cup 12 is formed.
- cup 12 is formed from a polymer sheet of material in a forming machine.
- cup 12 may be manufactured by injection molding, by injecting molding a perform that is then blow molded, or “stretched,” to its final shape, by extrusion blow molding, pressure thermoforming, combinations thereof, or other suitable processes.
- the formed cups are then transferred to a first, nested conveyor with recesses configured to receive the cups.
- a second conveyor may then be positioned to “drop” the pods (after being formed, filled with substance, and sealed) into the cups.
- the filled cups may then be sealed with an appropriate lid material (e.g., utilizing a sheet of lid material such as a foil or paper-based product), and the individual cartridges may then be individually trimmed for final packaging, labeling, etc.
- an appropriate lid material e.g., utilizing a sheet of lid material such as a foil or paper-based product
- additional and/or different steps may be performed in producing beverage filter cartridges than those shown in FIG. 6 .
- Cartridge 110 is generally similar to cartridge 10 except as described herein.
- Cartridge 110 includes a cup 112 and a lid 116 sealed to cup 112 and having an aperture 115 .
- a compacted filter 128 may be inserted into the interior of cup 112 and heat staked or otherwise bonded to the perimeter of aperture 115 .
- Granules may then be inserted to the interior of the filter 128 such that the filter expands within the interior of cup 112 .
- the top of cartridge 110 may be sealed with a sealing member 113 (e.g., a foil or paper seal).
- Cartridge 120 is generally similar to cartridge 10 except that cartridge 120 does not utilize an annular rib on the cup, but rather utilizes a number of discrete standoffs 121 to support the pod. Further, cartridge 120 does not include a central standoff or post extending upward from the bottom of the cup.
- Cartridge 130 is similar to cartridge 120 , in that the cup includes a number of standoffs 131 .
- Cartridge 130 further includes a central standoff or post 133 .
- Standoffs 131 , 133 are intended to support a pod (not shown).
- a cup 52 may be an injection molded polymer component having a pair of finger tabs 54 extending outward from the top portion of the cup. Finger tabs 54 may facilitate orientation of the cup within a cavity of a brewing device. A plurality (e.g. 4 ) of standoffs 56 may extend upward from the bottom to assist in supporting a pod.
- Utilizing finger tabs 54 to locate cup 52 within a brewing device may ensure that the location of the bottom piecing nozzle of the brewing device can be approximated and standoffs 56 may be properly sized/located so as not to interfere with the bottom piercing function of the brewing device.
- An asymmetric helical portion 57 may aid in ejection from a suitable tool cavity (e.g., an injection molding tool), and the angle of the bottom edge of each channel of the helical portion may provide better gripping/support for pod 14 .
- a suitable tool cavity e.g., an injection molding tool
- This embodiment provides a one-piece construction having integrated standoffs that support the pod without the need for any additional filter supports.
- Appropriate barrier properties e.g., moisture, oxygen, etc. barriers
- EVOH ethylene vinyl alcohol
- cup 62 is shown according to an exemplary embodiment.
- Cup 62 may be similar to cup 52 shown in FIG. 10 except cup 62 does not include any finger tabs and has a substantially flat bottom without any standoffs.
- a filter support 64 having a recessed central portion 68 may be disposed within cup 62 and support a pod to avoid penetration by the lower piecing member.
- Filter support 64 may be an injection molded component formed to support the pod and have a plurality of apertures 66 that permit the beverage to flow out of the pod. Utilizing filter support 64 may allow for a larger/deeper compartment usable for beverage preparation.
- cup 72 is shown according to an exemplary embodiment.
- Cup 72 may be similar to cup 62 shown in FIG. 11 , except that cup 72 includes a helical portion that tapers at a greater rate than other embodiments disclosed herein.
- the bottom portions of the channels 77 forming the helical portion may have a sharper bottom portion to improve gripping of the pod and lower the risk of the filter material blocking the free channel down.
- the cup taper and shape of the helical portion may enable cup 72 to be injection molded and subsequently removed from the injection molding tool cavity without having to “unscrew” the molded component from the tool, as may be the case with other cup designs.
- cup 82 is shown according to an exemplary embodiment.
- cup 82 is formed by initially injection molding a preform 84 and subsequently blow-molding cup 82 into its final shape.
- Cup 82 may be formed with a number of standoffs 86 (e.g., 4, etc.) such that a pod may be supported without any additional filter support components.
- cup 82 may be “stackable” prior to receiving a pod, which may save storage space during production of the cartridges.
- Cup 92 may be made using a pressure thermoforming process (e.g., a plug-assisted thermoforming process, etc.) and includes a central standoff or post 94 extending from the center of the bottom.
- a generally flat filter support 96 (a disc-shaped member, etc.) having apertures 98 may rest upon post 94 and provide support for a pod and prevent puncturing of the pod by a piercing member of a brewing device.
- the various embodiments of the cartridges disclosed herein may provide various advantages to users, including providing a package envelop that comfortably fits into, functions without leakage, and is removable from, various brewing devices; a cartridge that holds an appropriate volume of substance/granules (e.g. coffee), while being sealed against oxygen, moisture, and/or other undesirable elements; and a cartridge that further permits fluid to flow in a controlled environment and at a controlled flow rate (i.e., maintaining a sufficient brew chamber during operation) while preventing beverage granules from exiting the cartridge and entering the beverage.
- the cartridges further have a robust design for transportation and storage, are safe for handling (e.g., do not include any sharp edges or hot surfaces), and provide a beverage that is safe for consumption.
- Various embodiments may further provide a barrier to protect the substance/granules from contamination and degradation prior to and during use, while providing top and/or bottom surfaces that are pierceable by appropriate brewing devices.
- the helical features of the cup evenly distribute fluid throughput across the substance/granules while providing a non-turbulent fluid exit flow from the cup into the machine.
Abstract
Description
- This Application is a continuation of International Patent Application No. PCT/NL2012/050596, filed on Aug. 31, 2012, which claims the benefit of priority to U.S. Provisional Application No. 61/530,682, filed on Sep. 2, 2011, all of which are hereby incorporated herein by reference in their entireties.
- The present disclosure relates generally to the field of beverage filter cartridges, and more specifically, to disposable beverage filter cartridges usable with coffee machines or similar brewing devices to produce beverages such as coffee and the like.
- One embodiment relates to a beverage filter cartridge comprising a cup having at least one sidewall; a cover sealed to the cup to form an interior; and a filter pod provided within the interior and having a substance provided therein suitable for brewing a beverage; wherein at least a portion of the sidewall comprises a helical channel extending about the cup.
- Another embodiment relates to a beverage filter cartridge comprising a cup having an open top, a closed bottom, and a sidewall extending between the top and the bottom, the top, bottom, and sidewall defining an interior; a filter disposed within the interior such that a space is maintained between the filter and the bottom; and a lid coupled to the top and configured to retain the filter within the interior; wherein the filter is not coupled to the cup or the lid.
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FIG. 1 is an exploded perspective view of a beverage filter cartridge according to an exemplary embodiment. -
FIG. 2 is a cutaway perspective view of a cup for a beverage filter cartridge according to an exemplary embodiment. -
FIG. 3 is a cross-sectional view of a beverage filter cartridge according to an exemplary embodiment. -
FIG. 4 shows various filter pods according to exemplary embodiments. -
FIG. 5 is a cutaway perspective view of a beverage filter cartridge according to an exemplary embodiment. -
FIG. 6 is a schematic representation of a process for making beverage filter cartridges according to an exemplary embodiment. -
FIGS. 7-14 are schematic representations of beverage filter cartridges and beverage filter cartridge components according to various exemplary embodiments. - Some commercially available brewing devices are configured to receive a disposable filter cartridge. The cartridge is inserted into a brewing cavity of the brewing device. The brewing device includes a brewing chamber to receive the cartridge, and access to the brewing chamber may be via a moveable handle, a cover, etc. A user places the cartridge into the brewing chamber of the brewing device and initiates the brewing process. A first piercing member of the brewing device penetrates the top of the cartridge and introduces a fluid, such as hot water, into the interior of the cartridge, which typically contains a substance such as coffee granules. The hot water passes through the coffee granules, extracting coffee flavoring from the coffee granules before passing through a filter material within the cartridge. A second piercing member of the brewing device pierces the bottom of the cartridge and provides an exit path for the brewed beverage to leave the cartridge and be directed to a cup or other container used for consumption by users.
- Referring to the FIGURES generally, various embodiments disclosed herein are directed to beverage filter cartridges usable with brewing devices such as coffee machines to make, for example, single servings of coffee or other beverages (e.g., tea, etc.). As discussed in detail herein, the beverage filter cartridges of the present disclosure may provide several advantages over more conventional cartridges.
- Referring now to
FIGS. 1-5 , a beverage filter cartridge 10 (e.g., a container, package, canister, pod, etc.) is shown according to an exemplary embodiment. Cartridge 10 is configured for use with a coffee machine orsimilar brewing device 20 such that, as further discussed herein, atop piercing member 22 ofbrewing device 20 pierces the top ofcartridge 10 and provides a supply of a liquid (e.g., hot, pressurized water or other liquid, etc.), and abottom piercing member 24 ofbrewing device 20 pierces the bottom ofcartridge 10 and is configured to receive the brewed liquid (e.g., a coffee beverage) after passing through the interior ofcartridge 10. Cartridge 10 may be usable with a variety of brewing machines, and is generally a disposable cartridge configured for one-time usage. Alternatively,cartridge 10 or one or more components thereof may be configured to be re-used by consumers (e.g., a reusable cup, etc.). - According to an exemplary embodiment,
cartridge 10 includes a cup 12 (e.g., a container, holder, etc.), a filter bag, or pod 14 (e.g., a filter pod, filter assembly, etc.), and a lid 16 (e.g., a cover, top, film, foil, etc.). Generally,pod 14 holds a substance 18 (e.g., coffee grounds, tea, an additive, etc.) and is sealed withincup 12 by way oflid 16. According to some embodiments,cup 12 andlid 16 are sealed together such that they provide a sealed interior (e.g., via a hermetic seal, etc.) that maintains the freshness ofsubstance 18 withinpod 14. In some embodiments, the pod may be “compacted” within the interior ofcup 12 whenlid 16 is sealed tocup 12.Substance 18 may include substances such as coffee grounds/granules, tea, an additive (e.g., creamer, sugar, etc.) and the like, which are usable to extract flavorings, etc. into a liquid such as hot water to produce a brewed beverage. The substance may partially or totally dissolve in the liquid during the brewing cycle. -
Lid 16 is a generally flat, planar member that is configured to seal, or adhere, to the upper portion ofcup 12. In some embodiments,lid 16 may be or comprise a metal foil (e.g., aluminum, etc.), while in other embodiments,lid 16 may be or comprise a paper-based lid (e.g., cardboard, etc.). In some embodiments, a polymer material is integrated in with paper-based materials to facilitate melting/bonding (e.g., welding, etc.) oflid 16 tocup 12. - In some embodiments,
lid 16 has an outer shape that generally conforms to or follows the shape of the upper portion ofcup 12. Alternatively, one or more portions oflid 16 may overhangcup 12, e.g., to provide a pull tab, label, or other feature. Furthermore,lid 16 and/orcup 12 may include alignment features such as indents, detents, tabs, etc. configured to aligncartridge 10 withindevice 20. -
Pod 14 includes afilter 28 andsubstance 18.Filter 28 may be any suitable filter material used in brewing coffee and similar beverages (e.g., a paper-based filter material or the like).Filter 28 may be provided with a generally cylindrical shape to conform to the interior ofcup 12.Substance 18 may include coffee grounds or any other suitable substance usable in brewing a beverage for consumption. Generally, as hot water passes throughsubstance 18, a flavor (e.g., a coffee flavor, etc.) is extracted from the substance. In some embodiments,pod 14 includes a basket-shaped portion that receives the coffee grounds or other substance, and a generally flat top that is sealed to the basket portion. In some embodiments,pod 14 may be inserted intocup 12 “top down” to help ensure a relatively flat surface fortop piercing member 22 to penetrate. In further embodiments,pod 14 may be partitioned to include separate compartments for different substances. For example,pod 14 may be configured such that a first compartment is filled with coffee grounds or granules, and a second compartment may be filled with an additive such as a creamer, sugar, etc. The shapes, relative sizes, and positioning of the compartments may be varied according to various alternative embodiments. -
Cup 12 includes atop 30 and abottom 32 with anannular sidewall 34 extending betweentop 30 andbottom 32. Top 30 may include a lip orflange portion 35 suitable for providing a surface to whichlid 16 may be sealed, bonded, etc. Top 30 may be designed to facilitate insertion/removal ofcartridge 10 to/from an appropriate brewing device (e.g., by providing a graspable portion, by providing alignment features, etc.).Bottom 32 may have a generallyflat surface 33 surrounding a center stand-off 36 (e.g., a post, dimple, projection, raised portion, etc.).Sidewall 34 may include an annular rib 38 (e.g., an extension, a ridge, protrusion, etc.) and a helix portion 42 (e.g., a helical gallery or portion, spiraling portion, etc.) extending from belowtop 30 to aboverib 38. - In some embodiments, it is desirable to maintain an empty space, or
void 40 between the bottom ofpod 14 andbottom surface 33 ofcup 12.Void 40 permits hot water provided bytop piercing member 22 to flow through and exit frompod 14, and further preventsbottom piercing member 24 frompiercing pod 14, which could result in unwanted portions of substance 18 (e.g., coffee grounds) becoming mixed with the brewed beverage. In some embodiments,void 40 comprises approximately 20 percent of the interior volume ofcup 12, whilepod 14 takes up the remaining 80 percent of the interior volume ofcup 12. In other embodiments, the relative volumes ofpod 14 andvoid 40 may be varied to suit a particular substance being brewed, a desirable strength of beverage, etc. - According to an exemplary embodiment,
cup 12 is configured to support pod 14 offset fromsurface 33 by way ofcenter standoff 36 and/orannular rib 38 to providevoid 40. In this way,pod 14 does not need to be coupled (e.g., sealed, etc.) tocup 12 orlid 16 in order to provide the appropriate space between the bottom ofpod 14 andsurface 33 ofcup 12 to formvoid 40. In some embodiments,standoff 36 is sized to have cross-section large enough to not act like a needle and puncture pod 14, and small enough to allow a sufficient volume of brewed beverage to entervoid 40 and not interfere withbottom piercing member 24. - In some embodiments,
annular rib 38 may extend about the perimeter ofcup 12 to assist in maintaining the position ofpod 14 withincup 12. For example, annular rib may extend aboutcup 12 at a height such thatpod 14 tends to rest on, or abut,annular rib 38, and the top ofpod 14 is substantially even withtop 30 ofcup 12. Whileannular rib 38 is shown to have a generally rounded profile, other shapes and/or profiles may be used according to other exemplary embodiments (e.g., squared-off profiles, etc.). Furthermore, the position ofannular rib 38 along the height ofsidewall 34 may vary according to various exemplary embodiments. - According to an exemplary embodiment, helical portion 42 (e.g., a single helical or spiraling channel extending along all or a portion of the height of
sidewall 34, a series of adjacent protrusions or channels, etc.) may extend from below/adjacent top 30 to above/adjacentannular rib 38. In some embodiments,helical portion 42 may extend along the entire height ofsidewall 34. The number of “revolutions” of the channel forming the helical portion may vary according to various exemplary embodiments. According to various embodiments,helical portion 42 may provide several benefits to the brewing process, including generation of a cyclonic-pressure system around the perimeter ofcup 12 that promotes even fluid distribution throughsubstance 18. According to an alternative embodiment,sidewall 34 comprises a series of annular channels arrayed vertically along the sidewall rather than a single helical channel. - In some embodiments,
helical portion 42 extends alongsidewall 34 along the entire height ofpod 14 whenpod 14 is positioned withincup 12. In other embodiments,pod 14 may extend slightly belowhelical portion 42.Helical portion 42 is configured such that as hot water or other fluid passes throughpod 14, the sides ofpod 14 do not “stick” to, or completely conform to the grooves, or channels 44, ofhelical portion 42. In other words, the channels 44 ofhelical portion 42 are sufficiently deep that a fluid path is formed betweenpod 14 andsidewall 34 ofcup 12 as hot water passes down throughpod 14 andcup 12. As such, portions of fluid (e.g., hot water/coffee extract) may move downward through the pod/cup in a circular motion. - Furthermore,
helical portion 42 creates a lower pressure region toward the outer portions of cup 12 (e.g. a “cyclonic pressure system” around the perimeter of the cup), thereby promoting a more even distribution/flow of liquid through the granules ofsubstance 18. As a result, more efficient extraction fromsubstance 18 may result relative to more traditional brewing techniques, providing a “stronger” beverage while using the same amount of substance/granules. In some embodiments, as fluid enterscartridge 10, the initial pressure of the fluid forces the fluid toward the sidewalls ofcup 12.Pod 14 tends to “swell” due the introduction of the fluid, andpod 14 then tends to “grip” the helical portion ofcup 12 such that the fluid flows in a circular motion (e.g., a circumferential flow path) around the helical portion ofcup 12. Fluid may thus exit through the side and/or bottom ofpod 14. - According to some embodiments, the helical portion of the cup provides a “crushable” cartridge that is configured to be crushed, or compacted post-use, thereby minimizing the volume of waste material for consumers. Furthermore,
cup 12 may slightly compress during use, providing a visual indication to users that the filter has been used and may be discarded. - According to some embodiments,
cup 12 may be made from a polymer material (e.g., polypropylene, etc.), such thatcup 12 provides a barrier from moisture, oxygen, carbon dioxide, etc. during transportation, sale, etc. ofcartridge 10 and maintains the freshness ofsubstance 18 withinpod 14.Bottom surface 33 ofcup 12 is configured to be pierceable by an appropriate piercing member, or needle, such asbottom piercing member 24. In some embodiments,cup 12 may be a blow-molded or thermoformed component. In other embodiments, any other suitable manufacturing technique may be utilized in making cup 12 (e.g., injection molding, other forming processes, or combinations thereof). - Referring now to
FIG. 4 ,pod 14 is shown according to an exemplary embodiment, and includes abasket 41 and acover 43 that form filter 28 (discussed above) when holdingsubstance 18.Basket 41 is a generally basket shaped member configured to hold a volume ofsubstance 18 such as coffee grounds or granules, etc.Cover 43 is a generally flat member configured to be sealed tobasket 41 to seal the substance withinfilter 28. In some embodiments,basket 41 and cover 43 may be made from the same or similar filter material (e.g., a paper-based filter material, etc.). As indicated above, the size, shape, and/or material ofpod 14 may be varied to suit a particular application. - Referring to
FIG. 6 , a schematic representation of a process for producing a beverage filter cartridge such ascartridge 10 is shown according to an exemplary embodiment. First,cup 12 is formed. In some embodiments,cup 12 is formed from a polymer sheet of material in a forming machine. According to various other embodiments,cup 12 may be manufactured by injection molding, by injecting molding a perform that is then blow molded, or “stretched,” to its final shape, by extrusion blow molding, pressure thermoforming, combinations thereof, or other suitable processes. The formed cups are then transferred to a first, nested conveyor with recesses configured to receive the cups. A second conveyor may then be positioned to “drop” the pods (after being formed, filled with substance, and sealed) into the cups. The filled cups may then be sealed with an appropriate lid material (e.g., utilizing a sheet of lid material such as a foil or paper-based product), and the individual cartridges may then be individually trimmed for final packaging, labeling, etc. According to various alternative embodiments, additional and/or different steps may be performed in producing beverage filter cartridges than those shown inFIG. 6 . - Referring to
FIG. 7 , a cartridge 110 is shown according to an alternative embodiment. Cartridge 110 is generally similar tocartridge 10 except as described herein. Cartridge 110 includes a cup 112 and a lid 116 sealed to cup 112 and having an aperture 115. A compacted filter 128 may be inserted into the interior of cup 112 and heat staked or otherwise bonded to the perimeter of aperture 115. Granules may then be inserted to the interior of the filter 128 such that the filter expands within the interior of cup 112. After inserting the granules, the top of cartridge 110 may be sealed with a sealing member 113 (e.g., a foil or paper seal). - Referring to
FIG. 8 , a portion of acartridge 120 is shown according to an alternative embodiment.Cartridge 120 is generally similar tocartridge 10 except thatcartridge 120 does not utilize an annular rib on the cup, but rather utilizes a number ofdiscrete standoffs 121 to support the pod. Further,cartridge 120 does not include a central standoff or post extending upward from the bottom of the cup. - Referring to
FIG. 9 , a portion of acartridge 130 is shown according to an alternative embodiment.Cartridge 130 is similar tocartridge 120, in that the cup includes a number ofstandoffs 131.Cartridge 130 further includes a central standoff or post 133.Standoffs 131, 133 are intended to support a pod (not shown). - Referring to
FIGS. 10-14 , alternative embodiments of cartridges are shown according to various exemplary embodiments, and may generally include similar features to the other cartridges discussed herein except as noted. For example, referring toFIG. 10 , acup 52 may be an injection molded polymer component having a pair offinger tabs 54 extending outward from the top portion of the cup.Finger tabs 54 may facilitate orientation of the cup within a cavity of a brewing device. A plurality (e.g. 4) ofstandoffs 56 may extend upward from the bottom to assist in supporting a pod. Utilizingfinger tabs 54 to locatecup 52 within a brewing device may ensure that the location of the bottom piecing nozzle of the brewing device can be approximated andstandoffs 56 may be properly sized/located so as not to interfere with the bottom piercing function of the brewing device. - An asymmetric helical portion 57 (e.g., such that the each individual groove or channel has a cross-section that “sags” or “slumps” downward) may aid in ejection from a suitable tool cavity (e.g., an injection molding tool), and the angle of the bottom edge of each channel of the helical portion may provide better gripping/support for
pod 14. This embodiment provides a one-piece construction having integrated standoffs that support the pod without the need for any additional filter supports. Appropriate barrier properties (e.g., moisture, oxygen, etc. barriers) may be achieved by adding additives to an injection molding material, by spray-coating the internal surface with ethylene vinyl alcohol (EVOH), etc. - Referring to
FIG. 11 , acup 62 is shown according to an exemplary embodiment.Cup 62 may be similar tocup 52 shown inFIG. 10 exceptcup 62 does not include any finger tabs and has a substantially flat bottom without any standoffs. Afilter support 64 having a recessedcentral portion 68 may be disposed withincup 62 and support a pod to avoid penetration by the lower piecing member.Filter support 64 may be an injection molded component formed to support the pod and have a plurality ofapertures 66 that permit the beverage to flow out of the pod. Utilizingfilter support 64 may allow for a larger/deeper compartment usable for beverage preparation. - Referring to
FIG. 12 , acup 72 is shown according to an exemplary embodiment.Cup 72 may be similar tocup 62 shown inFIG. 11 , except thatcup 72 includes a helical portion that tapers at a greater rate than other embodiments disclosed herein. Further, the bottom portions of thechannels 77 forming the helical portion may have a sharper bottom portion to improve gripping of the pod and lower the risk of the filter material blocking the free channel down. The cup taper and shape of the helical portion may enablecup 72 to be injection molded and subsequently removed from the injection molding tool cavity without having to “unscrew” the molded component from the tool, as may be the case with other cup designs. - Referring to
FIG. 13 , acup 82 is shown according to an exemplary embodiment. According to one embodiment,cup 82 is formed by initially injection molding apreform 84 and subsequently blow-molding cup 82 into its final shape.Cup 82 may be formed with a number of standoffs 86 (e.g., 4, etc.) such that a pod may be supported without any additional filter support components. Furthermore,cup 82 may be “stackable” prior to receiving a pod, which may save storage space during production of the cartridges. - Referring to
FIG. 14 , acup 92 is shown according to an exemplary embodiment,Cup 92 may be made using a pressure thermoforming process (e.g., a plug-assisted thermoforming process, etc.) and includes a central standoff or post 94 extending from the center of the bottom. A generally flat filter support 96 (a disc-shaped member, etc.) havingapertures 98 may rest uponpost 94 and provide support for a pod and prevent puncturing of the pod by a piercing member of a brewing device. - The various embodiments of the cartridges disclosed herein may provide various advantages to users, including providing a package envelop that comfortably fits into, functions without leakage, and is removable from, various brewing devices; a cartridge that holds an appropriate volume of substance/granules (e.g. coffee), while being sealed against oxygen, moisture, and/or other undesirable elements; and a cartridge that further permits fluid to flow in a controlled environment and at a controlled flow rate (i.e., maintaining a sufficient brew chamber during operation) while preventing beverage granules from exiting the cartridge and entering the beverage. The cartridges further have a robust design for transportation and storage, are safe for handling (e.g., do not include any sharp edges or hot surfaces), and provide a beverage that is safe for consumption.
- Various embodiments may further provide a barrier to protect the substance/granules from contamination and degradation prior to and during use, while providing top and/or bottom surfaces that are pierceable by appropriate brewing devices. The helical features of the cup evenly distribute fluid throughput across the substance/granules while providing a non-turbulent fluid exit flow from the cup into the machine.
- It is important to note that the construction and arrangement of the elements of the beverage filter cartridges as shown in the exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in the various embodiments. Accordingly, all such modifications are intended to be included within the scope of the present disclosure as defined in the appended claims. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes, and/or omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the spirit of the present disclosure.
Claims (16)
Priority Applications (1)
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US14/195,662 US20140178538A1 (en) | 2011-09-02 | 2014-03-03 | Beverage filter cartridge |
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US201161530682P | 2011-09-02 | 2011-09-02 | |
PCT/NL2012/050596 WO2013032330A1 (en) | 2011-09-02 | 2012-08-31 | Beverage filter cartridge |
US14/195,662 US20140178538A1 (en) | 2011-09-02 | 2014-03-03 | Beverage filter cartridge |
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PCT/NL2012/050596 Continuation WO2013032330A1 (en) | 2011-09-02 | 2012-08-31 | Beverage filter cartridge |
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US11684197B2 (en) * | 2018-04-20 | 2023-06-27 | Resolute Patents, Llc | Portable beverage system and assembly |
US20220169439A1 (en) * | 2019-04-18 | 2022-06-02 | Aroma System S.R.L. | Capsule |
US11805934B1 (en) * | 2020-10-21 | 2023-11-07 | Adrian Rivera | Brewing material lid and container for a beverage brewer |
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WO2013032330A1 (en) | 2013-03-07 |
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