EP1344724B1 - Beverage cartridge, method for fabricating it and corresponding filter - Google Patents
Beverage cartridge, method for fabricating it and corresponding filter Download PDFInfo
- Publication number
- EP1344724B1 EP1344724B1 EP03251390A EP03251390A EP1344724B1 EP 1344724 B1 EP1344724 B1 EP 1344724B1 EP 03251390 A EP03251390 A EP 03251390A EP 03251390 A EP03251390 A EP 03251390A EP 1344724 B1 EP1344724 B1 EP 1344724B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- filter element
- container
- beverage
- beverage cartridge
- 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.)
- Expired - Lifetime
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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
- B65D85/8061—Filters
Definitions
- the present invention relates to beverage dispensing machines and, in particular, to a beverage cartridge and filter assembly for use in a beverage dispensing machine.
- Single serving beverage cartridges are very popular because they provide a fresh tasting beverage quickly and conveniently.
- Beverages such as coffee are typically produced by beverage dispensing machines that use beverage cartridges holding beverage products.
- Beverage cartridges typically comprise a sealed container having a top surface, a bottom surface and a filter.
- the filter subdivides the sealed container to provide an upper brewing chamber for housing a powdered or ground beverage and a lower chamber for receiving the filtered beverage.
- Beverage cartridges of the prior art are typically comprised of plastic or metal.
- Stepped beverage cartridges such as disclosed in European Patent Application No. 1101430, can be produced using a one-step vacuum forming process when they are manufactured from plastic. Such cartridges are difficult to manufacture when they are formed from a metal, such as aluminum, however.
- the type of filter used in a beverage cartridge has significant impact on the quality of the beverage product produced.
- Paper filters produce a high quality beverage. These filters, however, lack wet strength and can remove too much of the essential coffee oils and flavour.
- Metal filters provide sufficient strength. Metal filters, however, allow higher levels of coffee oils to pass through into the brewed beverage. The high levels of produce a different taste in the coffee that is often undesirable.
- a filter is desired that has sufficient dry and wet strength to withstand the high pressures and temperatures associated with brewing but not produce a bitter tasting brewed beverage, as some synthetic filter media are known to do.
- a beverage cartridge apparatus as defined in independent claim 1.
- a filter assembly is provided that has sufficient strength to withstand high pressures.
- the sloped step allows the filter to be fused thereto more quickly and efficiently.
- the present invention provides a further advantage in that the stepped beverage cartridge can be manufactured by a single processing step regardless of the type of material that it is comprised of.
- a beverage cartridge is indicated generally by the numeral 10.
- the beverage cartridge 10 includes a container 12 and a cover 14.
- the container 12, which is shown in Figure 2, includes a generally conical shaped sidewall 16 having a sloped step 26 and a shoulder 32 formed therein.
- the sidewall 16 extends from a generally circular bottom wall 18 to an upper edge 52 of the container 12.
- a lip 40 extends outwardly from the upper edge 52 of the container 12.
- the bottom wall 18 of the container 12 includes a recess 20.
- the recess 20 is defined by a generally conical shaped wall 22 that extends upwardly from the bottom wall 18 and an offset bottom wall 24.
- the sloped step 26 which is shown in Figures 1 and 3, is inclined at an angle 28 relative to a plane parallel to the bottom wall 18 of the container 12.
- the sloped step 26 has a length 30 and extends around the circumference of the container 12.
- the angle 28 is preferably 45 degrees, however, angles of between 55 and 90 degrees may also be used.
- a filter 50 which is shown in Figure 4, is coupled to the sloped step 26 about an outer edge 60 of the filter 50.
- the filter 50 subdivides the beverage cartridge 10 into a brewing chamber 34, which is located between the cover 14 and the filter 50, and a beverage receiving chamber 36, which is located between the filter 50 and the bottom wall 18.
- the brewing chamber 34 contains a powdered beverage product 54 for mixing with a liquid. Following mixing, the liquid is passed through the filter 50 to provide a brewed beverage. The brewed beverage is retrievable from the beverage receiving chamber 36.
- the filter 50 is a laminated structure having first, second and third filter elements 56, 58 and 59, respectively, that are welded to one another about their edges, as best shown in Figures 5 and 6.
- the first filter element 56 is comprised of a blend of cellulose and polymer fibres.
- the first filter element 56 offers good particle retention, infusion and taste neutrality, all of which are desirable when producing a brewed beverage product.
- An example of a suitable material for the first filter element is Type 483402 filter paper, which is supplied by J R Crompton USA Ltd.
- the second filter element 58 is comprised of a porous layer of a relatively high strength material, such as a polymer.
- the second filter element 58 is located downstream of the first filter element 56 and provides added support thereto because it has a higher wet strength.
- the addition of the second filter element 56 enables the filter 50 to withstand high liquid pressures in excess of 3 bar and liquid temperatures of up to at least 200 degrees Fahrenheit, while maintaining the brewing characteristics of the first filter element 56.
- a suitable material for the second filter element 58 is Dupont Vexar Standard E-2082.
- the second filter element 58 is made from any non-woven polymer material that is compatible with the first filter element 56 and the cartridge.
- the second filter element 58 is a polypropylene material of sufficient strength to withstand water pressures of from 0.5 to 5 bar and water pressures of up to 210 degrees Fahrenheit.
- the second filter element 58 is made from a polypropylene diamond shaped extruded or molded material.
- the diamond shaped extruded material includes strands that are welded or joined together to inhibit separation of the strands. This is advantageous over woven filters, which tend to separate at the time of cutting.
- the diamond shaped extruded material is expandable to accommodate the first filter element 56, which expands due to the heat and pressure produced during the brewing process.
- the second filter element 58 is elastic to allow expansion, thereby increasing the gross area of the filter 50.
- the elasticity of the second filter element 58 is limited, however, to provide support for the first filter element 56, without fracture or splitting of the first filter element 56.
- the second filter element 58 therefore forms an effective supporting structure without inhibiting the ability of the first filter element 56 from performing effectively.
- the weight and/or porosity govern the extraction level of the filtered beverage. It will be appreciated by those skilled in the art that the weight and/or porosity may be varied in order to achieve the desired filtration.
- the third filter element 59 comprises a plurality of polyester threads that are laminated to a downstream side of the second filter element 58.
- the filter 50 is die stamped and the first, second and third filter elements 56, 58, 59, respectively, are welded together at respective outer edges thereof.
- the weld process is performed when the filter 50 is formed, prior to being secured inside the beverage cartridge 10.
- the second filter element 58 melts, thereby sealing to the first filter element 56 and the edges of the polyester threads of the third filter element 59 are welded to the second filter element 58, on the opposite side as the first filter element 56.
- the heat passes through the second filter element 58 to the first filter element 56 such that the first filter element 56 is not scorched.
- the third filter element 59 serves to further strengthen the resulting filter 50.
- the outer edge 60 of the filter 50 is preformed to the shape shown in Figure 4 and heat sealed to the sloped step 26.
- the melt point of the second filter element 58 is lower than the melt point of the container 12. This ensures that the edge portion of the second filter element 58 melts to the sloped step 26 in the heat sealing process.
- the length 30 of the sloped step 26 is maximized in order to provide sufficient surface area for securing the filter 50 thereto.
- the sloped step 26 provides a larger surface area for welding than a generally right angled step, which results in a higher strength welded connection.
- the stress concentration on the filter that is caused by a right angled step is reduced by the use of the sloped step 26.
- the heat sealing device contacts the container 12 on the external side of the sloped step 26. Therefore, the sloped step 26 of the container is heated and the second filter element 58 melts, thereby bonding the filter 50 to the sloped step 26.
- An additional advantage of the sloped step 26 is that the filter 50 is less likely to break at a location adjacent the fused outer edge 60 thereof. This portion of the filter 50 is in contact with a lower edge 27 of the sloped step. In a generally right-angled step, the lower edge is much sharper, which can cause damage to the filter 50.
- the filter 50 bows when in use and the offset bottom wall 24 provides a support for the filter 50 which bows downwardly when in use.
- the sloped step 26 facilitates the downward bowing of the filter 50 and the filter 50 is permitted to expand.
- the offset bottom wall 24 supports the bowed filter, inhibiting the filter from bowing down to contact a remainder of the bottom wall 18.
- the third filter element 59 is not employed.
- the filter 50 includes only the first and second filter elements 56, 58, respectively, as shown in Figure 5B. This embodiment of the filter 50 is desirable in application where the first and second filter elements 56, 58, respectively, are of sufficient strength to withstand the internal pressure in the cartridge10.
- the shoulder 32 which is shown in Figures 2 and 7, is spaced between the filter 50 and the cover 14 to create a baffle to direct liquid away from the sidewall 16 of the container 12, towards the centre of the brewing chamber 34.
- the shoulder 32 facilitates an even distribution of the liquid throughout the brewing chamber 34, which enhances the extraction or dilution process and provides a brewed beverage of a higher quality.
- the shoulder 32 further functions to increase the strength of the container 12 so that the container 12 is able to withstand internal and external pressures due to the extraction process and handling of the container 12, respectively.
- the lip 40 which is shown in greater detail in Figure 8, includes a generally flat portion 42 that extends outwardly from the upper edge 52 of the sidewall 16 and an outwardly extending coiled portion 44.
- the coiled portion 44 forms a bead, having an outer diameter 46, around the circumference of the container 12.
- the coiled portion 44 extends a distance 48 above the upper edge 52 of the container 12 to provide a recess for receiving the cover 14.
- the distance 48 is approximately equal to half of the outer diameter 46 so that the coiled portion 44 is generally centered relative to the generally flat portion 42.
- the lip 40 is used as a reference point for locating the filter 50 with respect to the container 12 and depositing the powdered beverage into the brewing chamber 34 during beverage cartridge assembly.
- the lip 40 further adds strength to the container 12 and provides surface area to facilitate ejection from a beverage brewing apparatus.
- the cover 14 includes a pair of tabs 62, 64 that extend outwardly therefrom, as shown in Figure 9. Referring to Figures 8 and 9, the cover 14 is coupled to the flat portion 42 of the lip 40 of the container 12 and the tabs 62, 64 are coupled to the coiled portion 44. The coiled portion 44 of the lip 40 protects the edge of the cover 14 from accidentally being dislodged from the container 12.
- the tabs 62, 64 of the cover 14 are used for centering the cover 14 by aligning the tabs 62, 64 with the lip 40.
- the tabs 62, 64 further facilitate proper orientation of the beverage cartridge 10 during printing at the time of assembly or thereafter, for example, so that a logo or designation is printed at the same spot on each beverage cartridge 10.
- Orientation of the beverage cartridge 10 in the beverage brewing apparatus or other applications, can also be controlled using the tabs 62, 64 as locating devices.
- the container 12 is comprised of an aluminum sheet having a polypropylene film on one side thereof.
- the film layer is directed toward the interior of the container 12.
- the aluminum sheet typically has a thickness of between 0.50 and 1.20 mm.
- the container 12 is typically formed by a stamping process.
- the container 12 may also be formed by any other suitable process, such as drop forming, hydro forming, or vacuum forming, for example.
- a suitable aluminum sheet material for the container 12 is Product Type: B 342go, provided by Alupak AG, or Alcan product no. 3175.
- the container 12 may alternatively be comprised of a plastic having an oxygen barrier.
- the filter 50 is coupled to the sloped step 26, as described herein above.
- the beverage product is deposited into the brewing chamber 34 and the cover 14 is attached to the container, thereby sealing the cartridge 10.
- the cover 14 is comprised of a similar polypropylene coated aluminum foil as the container 12 and is heat-sealed to the lip 40 of the container 12. Alternatively, any material that can be adhered to the polypropylene of the container 12 and offer an effective oxygen barrier may be used.
- the beverage cartridge 10 is able to withstand water pressures of 0.5 to 9 bar when used in conjunction with an appropriate beverage brewing apparatus.
- the beverage cartridge 10 may be produced from aluminum using a one step stamping process. When working with aluminum, defects often occur during the manufacturing process when beverage cartridges having steps disposed at angles of approximately 90 degrees, are produced.
- the sloped step 26 is advantageous and allows the beverage cartridge 10 to be produced in a single manufacturing step.
- the generally conical shaped wall 22 and the offset bottom wall 24 of the recess 20 provide structural rigidity to the container 12.
- the filter 50 is spaced from the offset bottom wall 24 prior to brewing.
- the offset bottom wall 24 provides support to the filter 50, which expands during the brewing process.
- the recess 20 functions to inhibit the filter 50 from touching the bottom wall 18 of the container 12, which is undesirable because this would inhibit the entire filter area from filtering the beverage product.
- the recess 20 further serves to limit stretching or expansion of the first filter element 56 in order to prevent the first filter element 56 from fracturing, if the second filter element 58 fails to do so. It is not necessary for the filter 50 to contact the offset bottom wall 24 provided that the second filter element 58 provides sufficient strength to suspend the filter 50 above the bottom wall 18.
- the generally conical shaped wall 22 and the offset bottom wall 24 also serve to allow the container 12 to expand by expansion of the bottom wall 18, when the beverage cartridge 10 is under pressure during use. As pressure is applied in the container 12, the bottom wall 18 expands outwardly, thereby increasing the volume of the interior of the container 12. The filter 50 also expands, bowing downwardly in the container 12.
- the injector 70 for use with a beverage brewing apparatus 100, shown in Figure 12.
- the injector 70 includes a generally cylindrical body 72 having a pointed tip 74 for piercing the beverage cartridge 10.
- the body 72 includes a bore 76 that extends partially therethough.
- the bore 76 includes an inlet 78 for receiving a liquid and an outlet 80 for delivering the liquid to the brewing chamber 34 of the beverage cartridge 10.
- the outlet 80 includes first, second and third passages 82, 84 and 86, respectively, which are spaced about the generally cylindrical body 72 of the injector 70.
- the passages 82, 84 and 86 are spaced apart by an angle of approximately 120 degrees with respect to one another.
- the injector 70 is mounted above a beverage cartridge receiving cavity 102 of the beverage brewing apparatus 100.
- the beverage cartridge receiving cavity 102 and injector 70 are movable relative to one another to pierce the beverage cartridge 10 generally from the top, through the cover 14.
- Liquid travels from the container 104 to the injector 70 through a liquid conduit 106.
- the location of the passages 82, 84 and 86 allows the liquid to be delivered laterally with respect to the injector 70 to distribute the liquid evenly throughout the beverage powder.
- the second injector includes a generally cylindrical body 92 and a truncated tip 94.
- a bore 96 extends through the length of the body 92 and includes an inlet 96 and an outlet 98 for delivering liquid to the beverage cartridge 10.
- the second injector 90 is mounted below the beverage cartridge receiving cavity 102 of the beverage brewing apparatus 100.
- the beverage cartridge receiving cavity 102 and the second injector 90 are movable relative to one another to pierce the beverage cartridge 10 generally from below, through the recess 20 and the filter 50.
- the location of the outlet 98 allows the liquid to be diffused in an upward direction to provide an equal spray over the entire powdered beverage product.
- the third injector 110 includes a generally cylindrical body 112 and a pointed tip 120.
- a bore 114 extends partially through the body 112 and includes an inlet 116 and an outlet 118.
- the outlet 118 is generally oval shaped to allow a large volume of liquid to be expelled therefrom.
- the third injector 110 is mounted adjacent to the beverage cartridge receiving cavity 102 of the beverage brewing apparatus 100.
- the beverage cartridge receiving cavity 102 and the third injector 110 are movable relative to one another to pierce the beverage brewing chamber 34 of the beverage cartridge 10 generally from the side, through the sidewall 16.
- the outlet 118 is directed upwardly to facilitate mixing of the liquid with the powdered beverage.
- the third injector 110 is particularly useful for applications in which it is desirable to agitate the powdered beverage product by allowing the injector 110 to enter the brewing chamber 34 at a location that is slightly above the filter 50.
- the third injector 110 forces the liquid upward through the powdered beverage to agitate the powdered beverage before the liquid flows through the filter 50.
- the beverage cartridge 10 is inserted into the beverage receiving cavity 102 of the beverage brewing apparatus 100.
- An example of a beverage brewing apparatus that may be used is described in U.S. Patent Application no. 10/185196, which is assigned to the assignee of the present invention and herein incorporated by reference.
- a liquid injector device having an injector 70, 90 or 110 pierces the beverage cartridge 10 to deliver hot liquid to the brewing chamber.
- the hot liquid mixes with the powdered beverage.
- the mixing in the brewing chamber is facilitated by the shoulder 32, which creates a baffle.
- the hot liquid mixture then passes through the filter 50 and prepared beverage flows into the beverage receiving chamber 36.
- An extractor device (not shown) pierces the beverage cartridge 10 to extract the prepared beverage.
- the beverage cartridge 10 is designed to facilitate entry of the injector 70, 90 or 110 and the extractor device into the container 12.
- the ideal location of liquid entry and prepared beverage exit from the beverage cartridge 10 is determined based on the powdered beverage product contained and to be extracted.
- the beverage cartridge 10 may be recycled in its entirety by an appropriate recycling authority.
- Beverage cartridges made of aluminum are more easily recycled because they do not include the variety of polymers that are typically present in plastic beverage cartridges.
- a filter 50a is welded to an offset bottom wall 24a of a recess 20a by a heat sealing process.
- the offset bottom wall 24a provides support to the filter 50a. This is particularly useful in cases where the powdered beverage product is heavy or the pressure of the water injected into the cup if very high. Brewing a beverage in the beverage cartridge 10a causes the filter area to be increased as a result of the stretching or expansion of the filter 50a. This stretching action (or bowing of the filter) is desirable and is promoted by the manner in which the filter 50a is suspended between the sloped step 26 and the offset bottom wall 24a.
- FIG. 19 Another alternative embodiment of a beverage cartridge 10b is shown in Figure 19.
- a filter 50b is welded to an offset bottom wall 24b of recess 20b. Because the offset bottom wall 24b is offset from the plane of sloped step 26b, the filter 50b is generally concave in shape. This arrangement further promotes expansion of the filter 50b to increase the overall filter area.
- the filters 50, 50a and 50b have been shown as being flat or concave, however, it will be appreciated that the filter 50 is not flat when heat sealed to the sloped step 26 of the container 12. Instead, the filters will be fixed to the sloped step 26, causing the edges of the filter 50 to be tilted upwardly. Alternatively, the filter could be conical in shape.
Abstract
Description
- The present invention relates to beverage dispensing machines and, in particular, to a beverage cartridge and filter assembly for use in a beverage dispensing machine.
- Single serving beverage cartridges are very popular because they provide a fresh tasting beverage quickly and conveniently. Beverages such as coffee are typically produced by beverage dispensing machines that use beverage cartridges holding beverage products.
- Beverage cartridges typically comprise a sealed container having a top surface, a bottom surface and a filter. The filter subdivides the sealed container to provide an upper brewing chamber for housing a powdered or ground beverage and a lower chamber for receiving the filtered beverage. Beverage cartridges of the prior art are typically comprised of plastic or metal.
- Prior art beverage cartridges are often expensive and difficult to manufacture. Reducing the number of processing steps required to form the cartridge typically results in lower item cost and reduces the manufacturing time. Stepped beverage cartridges, such as disclosed in European Patent Application No. 1101430, can be produced using a one-step vacuum forming process when they are manufactured from plastic. Such cartridges are difficult to manufacture when they are formed from a metal, such as aluminum, however.
- Installing a filter in a beverage cartridge can be time consuming as several mounting steps are typically required. The heat sealing techniques that are currently employed to fix a filter in a cartridge, have been known to damage the beverage cartridge because the amount of working space inside the cartridge is limited. Some of these production faults are not discovered until the beverage cartridge has reached the consumer.
- The type of filter used in a beverage cartridge has significant impact on the quality of the beverage product produced. Paper filters produce a high quality beverage. These filters, however, lack wet strength and can remove too much of the essential coffee oils and flavour. Metal filters, on the other hand, provide sufficient strength. Metal filters, however, allow higher levels of coffee oils to pass through into the brewed beverage. The high levels of produce a different taste in the coffee that is often undesirable. As will be appreciated, a filter is desired that has sufficient dry and wet strength to withstand the high pressures and temperatures associated with brewing but not produce a bitter tasting brewed beverage, as some synthetic filter media are known to do.
- It is therefore an object of the present invention to provide a beverage cartridge and filter assembly that obviates or mitigates at least one of the above disadvantages.
- According to one aspect of the present invention, there is provided a beverage cartridge apparatus as defined in independent claim 1.
- According to another aspect of the present invention, there is provided a laminated filter structure as defined in independent claim 8.
- It is an advantage of an aspect of the present invention that a filter assembly is provided that has sufficient strength to withstand high pressures.
- In another aspect, the sloped step allows the filter to be fused thereto more quickly and efficiently. The present invention provides a further advantage in that the stepped beverage cartridge can be manufactured by a single processing step regardless of the type of material that it is comprised of.
- Embodiments of the present invention will now be described more fully with reference to the accompanying drawings in which:
- Figure 1 is a side sectional view of a beverage cartridge according to the present invention;
- Figure 2 is an isometric view of a container of the beverage cartridge of Figure 1;
- Figure 3 is an enlarged view of detail C of Figure 1;
- Figure 4 is a side sectional view of a portion of the beverage cartridge of Figure 1 including a filter;
- Figure 5A is a top view of the filter of Figure 4;
- Figure 5B is a top view of an alternative embodiment of the filter of Figure 4;
- Figure 6 is a sectional view along 6-6 of the filter of Figure 5A;
- Figure 7 is an enlarged view of detail D of Figure 1;
- Figure 8 is an enlarged view of detail B of Figure 1;
- Figure 9 is a top view of a cover of the beverage cartridge of Figure 1;
- Figure 10 is a side view of an injector according to an embodiment of the present invention;
- Figure 11 is a view of 9-9 of Figure 8;
- Figure 12 is a schematic side view of a beverage brewing apparatus and a beverage cartridge according to an embodiment of the present invention;
- Figure 13 is a side view of an injector according to another embodiment of the present invention;
- Figure 14 is a schematic side view of a beverage brewing apparatus and a beverage cartridge according to another embodiment of the present invention;
- Figure 15 is a top view of an injector according to still another embodiment of the present invention;
- Figure 16 is a side view of the injector of Figure 14;
- Figure 17 is a schematic side view of a beverage brewing apparatus and a beverage cartridge according to another embodiment of the present invention;
- Figure 18 is a side sectional view of a portion of a beverage cartridge according to another embodiment of the present invention; and
- Figure 19 is a side sectional view of a portion of a beverage cartridge according to yet another embodiment of the present invention.
- Referring to Figure 1, a beverage cartridge is indicated generally by the
numeral 10. Thebeverage cartridge 10 includes acontainer 12 and acover 14. Thecontainer 12, which is shown in Figure 2, includes a generally conicalshaped sidewall 16 having asloped step 26 and ashoulder 32 formed therein. Thesidewall 16 extends from a generallycircular bottom wall 18 to anupper edge 52 of thecontainer 12. Alip 40 extends outwardly from theupper edge 52 of thecontainer 12. Thebottom wall 18 of thecontainer 12 includes arecess 20. Therecess 20 is defined by a generally conicalshaped wall 22 that extends upwardly from thebottom wall 18 and anoffset bottom wall 24. - The
sloped step 26, which is shown in Figures 1 and 3, is inclined at anangle 28 relative to a plane parallel to thebottom wall 18 of thecontainer 12. Thesloped step 26 has alength 30 and extends around the circumference of thecontainer 12. Theangle 28 is preferably 45 degrees, however, angles of between 55 and 90 degrees may also be used. - A
filter 50, which is shown in Figure 4, is coupled to thesloped step 26 about anouter edge 60 of thefilter 50. Thefilter 50 subdivides thebeverage cartridge 10 into abrewing chamber 34, which is located between thecover 14 and thefilter 50, and a beverage receiving chamber 36, which is located between thefilter 50 and thebottom wall 18. Thebrewing chamber 34 contains a powderedbeverage product 54 for mixing with a liquid. Following mixing, the liquid is passed through thefilter 50 to provide a brewed beverage. The brewed beverage is retrievable from the beverage receiving chamber 36. - The
filter 50 is a laminated structure having first, second andthird filter elements first filter element 56 is comprised of a blend of cellulose and polymer fibres. Thefirst filter element 56 offers good particle retention, infusion and taste neutrality, all of which are desirable when producing a brewed beverage product. An example of a suitable material for the first filter element is Type 483402 filter paper, which is supplied by J R Crompton USA Ltd. - The
second filter element 58 is comprised of a porous layer of a relatively high strength material, such as a polymer. Thesecond filter element 58 is located downstream of thefirst filter element 56 and provides added support thereto because it has a higher wet strength. The addition of thesecond filter element 56 enables thefilter 50 to withstand high liquid pressures in excess of 3 bar and liquid temperatures of up to at least 200 degrees Fahrenheit, while maintaining the brewing characteristics of thefirst filter element 56. A suitable material for thesecond filter element 58 is Dupont Vexar Standard E-2082. Thesecond filter element 58 is made from any non-woven polymer material that is compatible with thefirst filter element 56 and the cartridge. In the present embodiment, thesecond filter element 58 is a polypropylene material of sufficient strength to withstand water pressures of from 0.5 to 5 bar and water pressures of up to 210 degrees Fahrenheit. - In a preferred embodiment, the
second filter element 58 is made from a polypropylene diamond shaped extruded or molded material. The diamond shaped extruded material includes strands that are welded or joined together to inhibit separation of the strands. This is advantageous over woven filters, which tend to separate at the time of cutting. The diamond shaped extruded material is expandable to accommodate thefirst filter element 56, which expands due to the heat and pressure produced during the brewing process. Thus, thesecond filter element 58 is elastic to allow expansion, thereby increasing the gross area of thefilter 50. The elasticity of thesecond filter element 58 is limited, however, to provide support for thefirst filter element 56, without fracture or splitting of thefirst filter element 56. Thesecond filter element 58 therefore forms an effective supporting structure without inhibiting the ability of thefirst filter element 56 from performing effectively. - In both the first and
second filter elements - The
third filter element 59 comprises a plurality of polyester threads that are laminated to a downstream side of thesecond filter element 58. - The
filter 50 is die stamped and the first, second andthird filter elements filter 50 is formed, prior to being secured inside thebeverage cartridge 10. During the weld process, thesecond filter element 58 melts, thereby sealing to thefirst filter element 56 and the edges of the polyester threads of thethird filter element 59 are welded to thesecond filter element 58, on the opposite side as thefirst filter element 56. The heat passes through thesecond filter element 58 to thefirst filter element 56 such that thefirst filter element 56 is not scorched. Thethird filter element 59 serves to further strengthen the resultingfilter 50. - The
outer edge 60 of thefilter 50 is preformed to the shape shown in Figure 4 and heat sealed to thesloped step 26. In order for a good seal to be provided in thebeverage cartridge 10, the melt point of thesecond filter element 58 is lower than the melt point of thecontainer 12. This ensures that the edge portion of thesecond filter element 58 melts to thesloped step 26 in the heat sealing process. Thelength 30 of the slopedstep 26 is maximized in order to provide sufficient surface area for securing thefilter 50 thereto. Thesloped step 26 provides a larger surface area for welding than a generally right angled step, which results in a higher strength welded connection. Advantageously, the stress concentration on the filter that is caused by a right angled step is reduced by the use of the slopedstep 26. - During the heat sealing process, the heat sealing device contacts the
container 12 on the external side of the slopedstep 26. Therefore, thesloped step 26 of the container is heated and thesecond filter element 58 melts, thereby bonding thefilter 50 to thesloped step 26. An additional advantage of the slopedstep 26 is that thefilter 50 is less likely to break at a location adjacent the fusedouter edge 60 thereof. This portion of thefilter 50 is in contact with alower edge 27 of the sloped step. In a generally right-angled step, the lower edge is much sharper, which can cause damage to thefilter 50. - Advantageously, the
filter 50 bows when in use and the offsetbottom wall 24 provides a support for thefilter 50 which bows downwardly when in use. Thesloped step 26 facilitates the downward bowing of thefilter 50 and thefilter 50 is permitted to expand. The offsetbottom wall 24 supports the bowed filter, inhibiting the filter from bowing down to contact a remainder of thebottom wall 18. - In an alternative embodiment, the
third filter element 59 is not employed. Thus, thefilter 50 includes only the first andsecond filter elements filter 50 is desirable in application where the first andsecond filter elements - The
shoulder 32, which is shown in Figures 2 and 7, is spaced between thefilter 50 and thecover 14 to create a baffle to direct liquid away from thesidewall 16 of thecontainer 12, towards the centre of thebrewing chamber 34. Theshoulder 32 facilitates an even distribution of the liquid throughout thebrewing chamber 34, which enhances the extraction or dilution process and provides a brewed beverage of a higher quality. Theshoulder 32 further functions to increase the strength of thecontainer 12 so that thecontainer 12 is able to withstand internal and external pressures due to the extraction process and handling of thecontainer 12, respectively. - The
lip 40, which is shown in greater detail in Figure 8, includes a generallyflat portion 42 that extends outwardly from theupper edge 52 of thesidewall 16 and an outwardly extendingcoiled portion 44. The coiledportion 44 forms a bead, having anouter diameter 46, around the circumference of thecontainer 12. The coiledportion 44 extends adistance 48 above theupper edge 52 of thecontainer 12 to provide a recess for receiving thecover 14. Thedistance 48 is approximately equal to half of theouter diameter 46 so that the coiledportion 44 is generally centered relative to the generallyflat portion 42. - The
lip 40 is used as a reference point for locating thefilter 50 with respect to thecontainer 12 and depositing the powdered beverage into thebrewing chamber 34 during beverage cartridge assembly. Thelip 40 further adds strength to thecontainer 12 and provides surface area to facilitate ejection from a beverage brewing apparatus. - The
cover 14 includes a pair oftabs cover 14 is coupled to theflat portion 42 of thelip 40 of thecontainer 12 and thetabs portion 44. The coiledportion 44 of thelip 40 protects the edge of thecover 14 from accidentally being dislodged from thecontainer 12. - The
tabs cover 14 are used for centering thecover 14 by aligning thetabs lip 40. Thetabs beverage cartridge 10 during printing at the time of assembly or thereafter, for example, so that a logo or designation is printed at the same spot on eachbeverage cartridge 10. Orientation of thebeverage cartridge 10 in the beverage brewing apparatus or other applications, can also be controlled using thetabs - The
container 12 is comprised of an aluminum sheet having a polypropylene film on one side thereof. The film layer is directed toward the interior of thecontainer 12. The aluminum sheet typically has a thickness of between 0.50 and 1.20 mm. Thecontainer 12 is typically formed by a stamping process. Thecontainer 12 may also be formed by any other suitable process, such as drop forming, hydro forming, or vacuum forming, for example. A suitable aluminum sheet material for thecontainer 12 is Product Type: B 342go, provided by Alupak AG, or Alcan product no. 3175. Thecontainer 12 may alternatively be comprised of a plastic having an oxygen barrier. - After forming the
container 12, thefilter 50 is coupled to thesloped step 26, as described herein above. Next, the beverage product is deposited into thebrewing chamber 34 and thecover 14 is attached to the container, thereby sealing thecartridge 10. - The
cover 14 is comprised of a similar polypropylene coated aluminum foil as thecontainer 12 and is heat-sealed to thelip 40 of thecontainer 12. Alternatively, any material that can be adhered to the polypropylene of thecontainer 12 and offer an effective oxygen barrier may be used. Thebeverage cartridge 10 is able to withstand water pressures of 0.5 to 9 bar when used in conjunction with an appropriate beverage brewing apparatus. - The
beverage cartridge 10 may be produced from aluminum using a one step stamping process. When working with aluminum, defects often occur during the manufacturing process when beverage cartridges having steps disposed at angles of approximately 90 degrees, are produced. Thesloped step 26 is advantageous and allows thebeverage cartridge 10 to be produced in a single manufacturing step. - The generally conical shaped
wall 22 and the offsetbottom wall 24 of therecess 20 provide structural rigidity to thecontainer 12. In this embodiment, thefilter 50 is spaced from the offsetbottom wall 24 prior to brewing. The offsetbottom wall 24 provides support to thefilter 50, which expands during the brewing process. Therecess 20 functions to inhibit thefilter 50 from touching thebottom wall 18 of thecontainer 12, which is undesirable because this would inhibit the entire filter area from filtering the beverage product. Therecess 20 further serves to limit stretching or expansion of thefirst filter element 56 in order to prevent thefirst filter element 56 from fracturing, if thesecond filter element 58 fails to do so. It is not necessary for thefilter 50 to contact the offsetbottom wall 24 provided that thesecond filter element 58 provides sufficient strength to suspend thefilter 50 above thebottom wall 18. - The generally conical shaped
wall 22 and the offsetbottom wall 24 also serve to allow thecontainer 12 to expand by expansion of thebottom wall 18, when thebeverage cartridge 10 is under pressure during use. As pressure is applied in thecontainer 12, thebottom wall 18 expands outwardly, thereby increasing the volume of the interior of thecontainer 12. Thefilter 50 also expands, bowing downwardly in thecontainer 12. - Referring now to Figure 10, there is shown an
injector 70 for use with abeverage brewing apparatus 100, shown in Figure 12. Theinjector 70 includes a generallycylindrical body 72 having a pointedtip 74 for piercing thebeverage cartridge 10. Thebody 72 includes abore 76 that extends partially therethough. Thebore 76 includes aninlet 78 for receiving a liquid and anoutlet 80 for delivering the liquid to thebrewing chamber 34 of thebeverage cartridge 10. As shown in Figure 11, theoutlet 80 includes first, second andthird passages cylindrical body 72 of theinjector 70. In a preferred embodiment, thepassages - As shown in Figure 12, the
injector 70 is mounted above a beveragecartridge receiving cavity 102 of thebeverage brewing apparatus 100. The beveragecartridge receiving cavity 102 andinjector 70 are movable relative to one another to pierce thebeverage cartridge 10 generally from the top, through thecover 14. Liquid travels from thecontainer 104 to theinjector 70 through aliquid conduit 106. The location of thepassages injector 70 to distribute the liquid evenly throughout the beverage powder. - Referring to Figure 13, a second embodiment of an
injector 90 is generally shown. The second injector includes a generallycylindrical body 92 and atruncated tip 94. A bore 96 extends through the length of thebody 92 and includes aninlet 96 and anoutlet 98 for delivering liquid to thebeverage cartridge 10. - As shown in Figure 14, the
second injector 90 is mounted below the beveragecartridge receiving cavity 102 of thebeverage brewing apparatus 100. The beveragecartridge receiving cavity 102 and thesecond injector 90 are movable relative to one another to pierce thebeverage cartridge 10 generally from below, through therecess 20 and thefilter 50. The location of theoutlet 98 allows the liquid to be diffused in an upward direction to provide an equal spray over the entire powdered beverage product. - Referring to Figures 15 and 16, a third embodiment of an
injector 110 is shown. Thethird injector 110 includes a generallycylindrical body 112 and apointed tip 120. Abore 114 extends partially through thebody 112 and includes aninlet 116 and anoutlet 118. Theoutlet 118 is generally oval shaped to allow a large volume of liquid to be expelled therefrom. - As shown in Figure 17, the
third injector 110 is mounted adjacent to the beveragecartridge receiving cavity 102 of thebeverage brewing apparatus 100. The beveragecartridge receiving cavity 102 and thethird injector 110 are movable relative to one another to pierce thebeverage brewing chamber 34 of thebeverage cartridge 10 generally from the side, through thesidewall 16. Theoutlet 118 is directed upwardly to facilitate mixing of the liquid with the powdered beverage. Thethird injector 110 is particularly useful for applications in which it is desirable to agitate the powdered beverage product by allowing theinjector 110 to enter thebrewing chamber 34 at a location that is slightly above thefilter 50. Thethird injector 110 forces the liquid upward through the powdered beverage to agitate the powdered beverage before the liquid flows through thefilter 50. - In use, the
beverage cartridge 10 is inserted into thebeverage receiving cavity 102 of thebeverage brewing apparatus 100. An example of a beverage brewing apparatus that may be used is described in U.S. Patent Application no. 10/185196, which is assigned to the assignee of the present invention and herein incorporated by reference. A liquid injector device having aninjector beverage cartridge 10 to deliver hot liquid to the brewing chamber. The hot liquid mixes with the powdered beverage. The mixing in the brewing chamber is facilitated by theshoulder 32, which creates a baffle. The hot liquid mixture then passes through thefilter 50 and prepared beverage flows into the beverage receiving chamber 36. An extractor device (not shown) pierces thebeverage cartridge 10 to extract the prepared beverage. - The
beverage cartridge 10 is designed to facilitate entry of theinjector container 12. The ideal location of liquid entry and prepared beverage exit from thebeverage cartridge 10 is determined based on the powdered beverage product contained and to be extracted. - Once the
beverage cartridge 10 has been ejected from thebeverage brewing apparatus 100, following beverage preparation, thebeverage cartridge 10 may be recycled in its entirety by an appropriate recycling authority. Beverage cartridges made of aluminum are more easily recycled because they do not include the variety of polymers that are typically present in plastic beverage cartridges. - Referring to Figure 18, an alternative embodiment of a
beverage cartridge 10a is shown. In this embodiment, afilter 50a is welded to an offsetbottom wall 24a of arecess 20a by a heat sealing process. The offsetbottom wall 24a provides support to thefilter 50a. This is particularly useful in cases where the powdered beverage product is heavy or the pressure of the water injected into the cup if very high. Brewing a beverage in thebeverage cartridge 10a causes the filter area to be increased as a result of the stretching or expansion of thefilter 50a. This stretching action (or bowing of the filter) is desirable and is promoted by the manner in which thefilter 50a is suspended between thesloped step 26 and the offsetbottom wall 24a. - Another alternative embodiment of a
beverage cartridge 10b is shown in Figure 19. Afilter 50b is welded to an offsetbottom wall 24b ofrecess 20b. Because the offsetbottom wall 24b is offset from the plane ofsloped step 26b, thefilter 50b is generally concave in shape. This arrangement further promotes expansion of thefilter 50b to increase the overall filter area. - The
filters filter 50 is not flat when heat sealed to thesloped step 26 of thecontainer 12. Instead, the filters will be fixed to thesloped step 26, causing the edges of thefilter 50 to be tilted upwardly. Alternatively, the filter could be conical in shape. - The many features and advantages of the invention are apparent from the detailed specification and, thus, it is intended by the appended claims to cover all such features and advantages of the invention that fall within the true spirit and scope of the invention. Further, since numerous modifications and changes may occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.
Claims (16)
- A beverage cartridge (10) comprising:a container (12) having a sidewall (16) extending from a first surface (18) and a lip (40) provided at an open end of the container (12);a cover (14) coupled to the lip (40) of the container (12) to cover the open end and seal the container (12);a step (26) formed in the sidewall (16);a laminated filter structure (50) coupled to the step (26), the laminated filter structure (50) subdividing the container (12) to form a brewing chamber (34) and a beverage receiving chamber (36), the laminated filter structure (50) having a first filter element (56) with a first edge portion, a beverage powder (54) contained in the brewing chamber (34),wherein the container (12) is pierceable to allow injection of liquid into the brewing chamber (34) and to allow prepared beverage to be extracted from the container (12); characterised in thatthe first filter element (56) is comprised of cellulose fibres, and the laminated filter structure (50) further comprises; a second filter element (58) with a second edge portion, the second filter element (58) being comprised of strands of extruded polypropylene fibres that are joined together to inhibit separation of the strands; a seal provided between the first edge portion (56) and the second edge portion (58); and wherein the second filter element (58) has a higher wet strength than the first filter element (56), the second filter element (58) being located downstream of the first filter element (56) such that the elasticity of the second filter element (58) permits expansion of the second filter element (58) under pressure while providing support for the first filter element (56).
- The beverage cartridge according to claim 1, further comprising a support (20), offset from the first surface (18) for supporting a portion of the laminated filter structure (50) during brewing.
- The beverage cartridge according to claim 2, wherein the support (20) comprises a generally conical recess having an offset wall (24) spaced from the first surface (18).
- The beverage cartridge according to any preceding claim, wherein the step (26) is sloped.
- The beverage cartridge according to claim 4 when dependent on claim 1, wherein said laminated filter structure (50) is heat sealed to the sloped step (26).
- The beverage cartridge according to any preceding claim, further comprising a shoulder (32) formed in the sidewall (16) in the brewing chamber (34), for facilitating distribution of the liquid in the brewing chamber (34).
- The beverage cartridge according to any preceding claim, wherein the cover (14) includes at least one tab (62,64) for orienting the beverage cartridge (10) in a preferred orientation.
- A laminated filter structure (50) for subdividing a beverage cartridge (10) to form a brewing chamber (34), said structure comprising:a first filter element (56) having a first outer edge portion, characterised in thatthe first filter element (56) is comprised of cellulose fibres and the structure further comprises; a second filter element (58) having a second outer edge portion, the second filter element (58) being comprised of strands of extruded polypropylene fibres that are joined together to inhibit separation of the strands; a seal provided between said first outer edge portion and said second outer edge portion; and wherein said second filter element (58) has a higher wet strength than said first filter element (56), and said second filter element (58) is located downstream of said first filter element (56) such that the elasticity of the second filter element (58) permits expansion of the second filter element (58) under pressure while providing support for the first filter element (56).
- The beverage cartridge according to claim 1 or 2, or the laminated filter structure according to claim 8, wherein said first filter element (56) is comprised of a blend of cellulose and polymer fibres.
- The beverage cartridge according to claim 1 or 2, or the laminated filter structure according to claim 8, further comprising a third filter (59) element comprising a third material fixed to one of said first (56) and said second filter (58) elements.
- The beverage cartridge or the laminated filter structure according to claim 10, wherein said third filter element (59) is comprised of polyester.
- The beverage cartridge or the laminated filter structure according to claim 10, wherein said third filter element (59) is comprised of polyester threads fixed to said second filter element (58).
- A process for fabricating the beverage cartridge (10) of claim 1, comprising:forming the container (12);coupling the filter (50) to the step (26) of the container (12) by applying a heating device to an exterior of said container (12), at said step (26); depositing said beverage powder (54) in said brewing chamber (34) of said container (12); andheat sealing said cover (14) to said lip (40) of said container (12).
- The process according to claim 13, wherein forming the container (12) includes stamping said container (12) from an aluminum sheet having a polypropylene film on one side thereof.
- The process according to claim 14, wherein said stamping is a one-step stamping process.
- The process according to claim 14, further comprising:stamping said first (56) and said second (58) filter elements; andwelding said first (56) and second (58) filter elements together at outer edges thereof, prior to the step of coupling the filter (50) to the step (26) of the container (12).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36494002P | 2002-03-14 | 2002-03-14 | |
US364940P | 2002-03-14 | ||
US42431202P | 2002-11-07 | 2002-11-07 | |
US424312P | 2002-11-07 |
Publications (2)
Publication Number | Publication Date |
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EP1344724A1 EP1344724A1 (en) | 2003-09-17 |
EP1344724B1 true EP1344724B1 (en) | 2006-05-10 |
Family
ID=27767604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03251390A Expired - Lifetime EP1344724B1 (en) | 2002-03-14 | 2003-03-07 | Beverage cartridge, method for fabricating it and corresponding filter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1344724B1 (en) |
AT (1) | ATE325756T1 (en) |
DE (1) | DE60305087T2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009017808U1 (en) | 2009-01-29 | 2010-06-24 | K System Gmbh | portion capsule |
USD678050S1 (en) | 2011-10-05 | 2013-03-19 | Kraft Foods Group Brands Llc | Bowl |
USD693242S1 (en) | 2013-01-14 | 2013-11-12 | Kraft Foods Group Brands Llc | Sleeve |
US8651012B2 (en) | 2004-10-25 | 2014-02-18 | Nestec S.A. | System with capsule having sealing means |
US11939143B2 (en) | 2009-06-17 | 2024-03-26 | Koninklijke Douwe Egberts B.V. | System, method and capsule for preparing a beverage |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0419063A (en) * | 2004-09-17 | 2007-12-11 | Tuttoespresso Spa | disposable beverage preparation capsule, and method for opening a beverage preparation capsule |
EP1772398A1 (en) * | 2005-10-07 | 2007-04-11 | Cense d'Almez S.A. | Cartridge for use with a device for preparing an infused beverage |
ES2309852T3 (en) | 2006-03-31 | 2008-12-16 | Nestec S.A. | CAPSULE WITH A PRESSURIZED OUTER JOINT MATERIAL BY FLUID. |
PT2284101E (en) | 2009-08-05 | 2011-11-30 | Nestec Sa | Capsule with relief-shaped sealing member |
HUE037108T2 (en) * | 2010-07-22 | 2018-08-28 | K Fee System Gmbh | Portion capsule having an identifier |
ITRE20110048A1 (en) | 2011-06-22 | 2012-12-23 | Ind Societa Cooperati Va Coop | DISPOSABLE CARTRIDGE FOR DRINK PREPARATION |
DE102012105282A1 (en) | 2012-06-18 | 2013-12-19 | K-Fee System Gmbh | Portion capsule and method of making a beverage with a portion capsule |
RU2018108414A (en) * | 2012-06-29 | 2019-02-25 | К-Фее Зюстем Гмбх | PORTION CAPSULE WITH IDENTIFIER ON THE MEMBRANE FILM CONNECTED |
DE102012223291A1 (en) | 2012-12-14 | 2014-06-18 | K-Fee System Gmbh | Portion capsule and method of making a beverage with a portion capsule |
GB201308927D0 (en) | 2013-05-17 | 2013-07-03 | Kraft Foods R & D Inc | A beverage preparation system, a capsule and a method for forming a beverage |
KR102149076B1 (en) | 2013-05-17 | 2020-08-27 | 인터컨티넨탈 그레이트 브랜즈 엘엘씨 | A beverage preparation system, a capsule and a method for forming a beverage |
SG11201608479SA (en) | 2014-04-17 | 2016-11-29 | K Fee System Gmbh | Single-serve capsule and method for preparing a beverage using a single-serve capsule |
US10336498B2 (en) | 2014-06-10 | 2019-07-02 | Printpack Illinois, Inc. | Container with improved punctureability |
CN107074440A (en) * | 2014-10-01 | 2017-08-18 | 卡夫食品集团品牌有限责任公司 | Coffee Nang Bao |
GB201420262D0 (en) | 2014-11-14 | 2014-12-31 | Kraft Foods R & D Inc | A method of forming a cup-shaped body for a beverage capsule |
CN104523150A (en) * | 2014-12-18 | 2015-04-22 | 成都快典科技有限公司 | Brewing device of coffee machine |
RU2017133486A (en) | 2015-02-27 | 2019-03-27 | К-Фее Зюстем Гмбх | PORTION CAPSULE WITH ATTACHED THERMOSWELDING FILTER ELEMENT |
JP6580714B2 (en) | 2015-06-10 | 2019-09-25 | ケイ‐フィー システム ゲーエムベーハー | Potion capsule using 3-layer nonwoven fabric |
MX2018000149A (en) | 2015-07-13 | 2018-03-23 | K Fee System Gmbh | Filter element having a cut-out. |
CA2998669C (en) | 2015-09-18 | 2020-01-07 | K-Fee System Gmbh | Adapter for a single serve capsule |
ES2641300B1 (en) * | 2016-05-05 | 2018-05-08 | Coffee Productions, S.L. | CAPSULE TO PREPARE A DRINK |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9318405U1 (en) * | 1993-12-01 | 1994-01-27 | Schoeller & Hoesch Papierfab | Filter material |
CA2325978A1 (en) | 1999-11-16 | 2001-05-16 | Robert Hale | Beverage filter cartridge system |
US6589577B2 (en) * | 2000-02-18 | 2003-07-08 | Keurig, Inc. | Disposable single serve beverage filter cartridge |
-
2003
- 2003-03-07 AT AT03251390T patent/ATE325756T1/en not_active IP Right Cessation
- 2003-03-07 DE DE60305087T patent/DE60305087T2/en not_active Expired - Lifetime
- 2003-03-07 EP EP03251390A patent/EP1344724B1/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8651012B2 (en) | 2004-10-25 | 2014-02-18 | Nestec S.A. | System with capsule having sealing means |
DE202009017808U1 (en) | 2009-01-29 | 2010-06-24 | K System Gmbh | portion capsule |
US11939143B2 (en) | 2009-06-17 | 2024-03-26 | Koninklijke Douwe Egberts B.V. | System, method and capsule for preparing a beverage |
USD678050S1 (en) | 2011-10-05 | 2013-03-19 | Kraft Foods Group Brands Llc | Bowl |
USD685630S1 (en) | 2011-10-05 | 2013-07-09 | Kraft Foods Group Brands Llc | Bowl |
USD693242S1 (en) | 2013-01-14 | 2013-11-12 | Kraft Foods Group Brands Llc | Sleeve |
Also Published As
Publication number | Publication date |
---|---|
DE60305087D1 (en) | 2006-06-14 |
ATE325756T1 (en) | 2006-06-15 |
EP1344724A1 (en) | 2003-09-17 |
DE60305087T2 (en) | 2006-12-07 |
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