AU2014240190A1 - Cap extraction device - Google Patents

Abstract

The device has a movable part (34) moving relative to a fixed part (30) and comprising a housing (35) for a capsule (32) to be extracted. A capsule positioning and introduction part has capsule guiding means (31) that is arranged so as to insert the capsule by gravity and position the capsule in an intermediate position. The movable part is configured for displacing the capsule from the intermediate position to extraction position during the closing of the device.

Description

- 1 Cap extraction device [0001] The present invention relates to a capsule extraction device and the machine incorporating said device. [0002] Capsule extraction devices already exist on the market. There is a need to propose an extraction device that makes it easier to insert and position the capsule in the device but that is both simple and low cost. [0003] Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field. [0004] One problem encountered is the positioning of the capsule in the device and the closing of the latter around the capsule to perform the extraction. The capsule usually has to be positioned by the user on a capsule support or in a housing, then the device is closed manually or automatically around the capsule. It is important to correctly position the capsule so that the device closes correctly around the latter and a good seal is thus achieved to ensure good conditions of extraction. Bad positioning may damage the capsule, and thus affect the conditions of extraction. The loading of the capsule must also be easy, without trial and error as to the correct position of the capsule in the device. The loading must also be as rapid as possible and not require excessive manipulations. [0005] So devices exist that propose the insertion of the capsule in a vertical plane and the movement of the extraction or infusion parts along a horizontal plane around the capsule. Such systems have the advantages of allowing a loading from the top piggy-bank fashion, and makes for rapid loading. The positioning of the capsule is then taken over by the movement of a movable part that pushes the capsule against another part such as a water heater. However, these devices are complex to produce and are not suitable for low-cost and therefore entry level coffee machines for the consumer market. They are therefore usually intended for the business market such as restaurants, bars or communities. For example, patent application WO 98/47418 relates to a device for the extraction of pre-measured inserts in which the inserts are inserted vertically and are extracted horizontally. The disadvantage of this device is that it comprises two movable parts for the extraction, which makes the mechanical principle more complicated.

-2 [0006] US patent 5.776.527 relates to a device for the infusion of lens-shaped filter capsules comprising means of guidance and retention in the form of movable stops that are pushed by a movable piston horizontally towards a water heater. The stops return to their position under the effect of a spring to release the capsule which then falls under the effect of gravity when the stops are rotated to open downward. Such a device uses several combined movements of the capsule guidance and retention means. This makes the device complex and expensive to produce. [0007] Patent application EP 1 219 217 Al relates to a coffee machine comprising a capsule seat that oscillates between a position for receiving the capsule and a position for releasing the capsule. The seat is pushed against the water injection system by means of a piston that moves horizontally when the seat is in the vertical position. Due to the oscillating configuration of the seat and the compliance with three reference positions of the latter, and the number of pieces necessary, such a device is complex and costly to produce. [0008] It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative. [0009] In a first aspect, the present invention relates to a capsule extraction device comprising - a first part, - a second part that can be moved relative to the first part, - a housing for the capsule and defining, in the closed position of the second movable part against the first part, an extraction position of the capsule along an axis in said housing, - a capsule insertion and positioning part arranged so as to insert the capsule by gravity and position said capsule in an intermediate position, - a drink pouring system, in that the second movable part is configured to move the capsule from the intermediate position into the extraction position when the device is closed. [0010] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

-3 [0011] In a second aspect, the present invention provides a capsule extraction device comprising - a first part, - a second part that can be moved relative to the first part, - a housing for the capsule and defining, in the closed position of the movable part against the fixed part, an extraction position of the capsule along an axis in said housing, - an insertion and positioning part comprising means of guiding the capsule arranged so as to insert the capsule by gravity and position said capsule in an intermediate position, - a drink pouring system, wherein the second movable part is configured to move the capsule from the intermediate position into the extraction position when the device is closed. [0012] In a third aspect, the present invention provides a device for extraction of a capsule comprising: - a first part; - a second part which is moveable relative to the first part; - a housing for the capsule, which, in the position of closure of the moveable part against the first part, defines a position of extraction of the capsule according to an axis in the said housing; - a part for introduction and positioning, comprising means for guiding the capsule, which are arranged such as to insert the capsule by gravity, and to position the said capsule in an intermediate position; - a drink pouring system the second, moveable part being configured to displace the capsule from the intermediate position to the position of extraction during closure of the device; and stopping means wherein the second, moveable part acts on the opening of the stopping means in order to move them apart during passage of the capsule from the intermediate position to its position of extraction. [0013] In a fourth aspect, the present invention provides a device for extraction of a beverage from a capsule containing an extractable food product, said device comprising: a first part; a second moveable part that can be moved relative to the first part; a housing for the capsule defining, in a closed position of the movable part against the first part, an extraction position of the capsule along an axis in said housing; -4 an insertion and positioning part comprising guidance means for guiding the capsule, arranged so as to insert the capsule by gravity, and to position the capsule in an intermediate position; a drink poring system, wherein the second, moveable part is configured to move the capsule from the intermediate position into the extraction position when the movable part is moved into the closed position, wherein the device comprises stopping means moveable between a position to retain the capsule in the intermediate position and release position to release the capsule; and wherein the second, moveable part is configured to move the stopping means into the release position during passage of the moveable part into the closed position. [0014] In a fifth aspect, the present invention provides a device for extraction of a capsule comprising: a fixed first part including an extraction plate; a moveable second part including a housing for the capsule, said second part being moveable relative to the first part along an axis and between an open position spaced from said extraction plate and a closed position adjacent the extraction plate thereby to hold the capsule in said housing in an extraction position; an insertion and positioning part comprising: guidance means for guiding the capsule to an intermediate position when inserted into the device; and stopping means moveable between a position to retain the capsule in the intermediate position along an axis which is substantially coaxial to the axis of the housing, and a release position; wherein the device is configured such that moving the second part from the open position toward the closed position urges: said capsule inserted into the intermediate position, to the extraction position; and the stopping means from the position to retain the capsule in the intermediate position, to the release position. [0015] In a sixth aspect, the present invention provides an extraction system comprising: a device for extraction of a capsule and a capsule that can be extracted in the device, the capsule having a guiding edge in the form of a collar, the device comprising a first fixed part, a second movable part that can be moved relative to the first fixed part, -5 a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing, an insertion and positioning part comprising means for guiding the capsule arranged so as to insert the capsule by gravity and position the capsule in an intermediate position, the guiding edge of the capsule being taken charge of in the means for guiding, the means for guiding being insertion slides allowing the engagement of the collar; and a beverage delivery system, wherein the second moveable part is so constructed and arranged to displace the capsule from the intermediate position to the extraction position when the second movable part is moved into the closed position, wherein the means for guiding comprises stopping means configured to retain the capsule in the intermediate position, the collar bearing against the stopping means in the intermediate position, the second movable part takes charge of the capsule to displace it from the intermediate position to the extraction position on the axis of the capsule in the extraction position in the housing such that in its movement, the second movable part acts on the capsule to move it downwards, the collar of the capsule passing beneath the stopping means, and to push it along the axis of the second movable part in its extraction position. [0016] In a seventh aspect, the present invention provides a method for extracting a beverage from a capsule, the method comprising: inserting the capsule into an extraction device; immobilizing the capsule in an intermediate position, where the capsule is arranged on an axis offset relative to the axis of the capsule in an extraction position where the capsule is arranged on an axis of a moveable part of the device; moving the moveable part toward a fixed part of the device such that the moveable part forces the capsule out of the intermediate position and transfers it to the extraction position; feeding a liquid to the capsule; and then extracting a beverage from the capsule. [0017] In a eighth aspect, the present invention provides a method for extracting a beverage from a capsule, the method comprising: providing a capsule comprising a guiding edge in the form of a collar and an extraction device comprising a first fixed part and a second moveable part that is moveable relative to the first part; -6 inserting the guide edge of the capsule into means for guiding and guiding the capsule in its fall under the force of gravity to an intermediate position, the means for guiding comprising insertion slides allowing the engagement of the collar; the capsule being immobilized in the intermediate position using stopping means, in the intermediate position the capsule being arranged on an axis offset relative to the axis of the capsule in an extraction position, in the extraction position the capsule being arranged on an axis of the moveable part; moving the moveable part toward the fixed part of the device such that the moveable part forces the capsule out of the intermediate position to the extraction position during its travel towards the extraction position by causing the collar of the capsule to pass beneath the stopping means; feeding a liquid to the capsule; and then extracting a beverage from the capsule. [0018] In a ninth aspect, the present invention provides a method for extracting a beverage, the method comprising: providing a capsule that can be extracted in an extraction device, the capsule having a guiding edge in the form of a collar; providing an extraction device for extraction of the capsule, the device comprising a first fixed part, a second movable part that can be moved relative to the first fixed part, a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing; inserting the capsule into the extraction device by an insertion and positioning part comprising means for guiding the capsule inserted under gravity and positioning the capsule in an intermediate position, the means for guiding taking charge of the guiding edge of the capsule, the means for guiding being insertion slides allowing the engagement of the collar; providing a liquid to the capsule; and liquid being extracted from the capsule in the extraction position, wherein the second moveable part is so constructed and arranged to displace the capsule from the intermediate position to the extraction position as the second movable part is moved into the closed position, wherein the means for guiding comprises stopping means configured to retain the capsule in the intermediate position, the collar bearing against the stopping means in the intermediate position, the second movable part taking charge of the capsule to displace it from -7 the intermediate position to the extraction position such that in its movement, the second movable part acts on the capsule (i) to lower it such that the collar of the capsule passes beneath the stopping means, and (ii) to push it along the axis of the second movable part into its extraction position. [0019] In a tenth aspect, the present invention provides a capsule for use in the extraction system as defined above, the capsule having a collar constructed and arranged (i) to bear against the stopping means and retaining the capsule in the intermediate position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position. [0020] In a eleventh aspect, the present invention provides a frustoconical capsule for use in the extraction system as defined above, the capsule having a collar constructed and arranged (i) to bear against the stopping means and cause the capsule to tilt in the intermediate position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position. [0021] In a twelfth aspect, the present invention provides a capsule for use in the method as defined in the ninth aspec, in which the capsule has a collar constructed and arranged (i) to bear against the stopping means to retain the capsule in the intermediate position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position. [0022] In a thirteenth aspect, the present invention provides a frustoconical capsule for use in the method as defined in the ninth aspect, in which the capsule has a collar constructed and arranged (i) to bear against the stopping means to retain the capsule in the intermediate position and cause the capsule to tilt in that position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position.

-8 [0023] In a fourteenth aspect, the present invention provides an extraction system comprising: a device for extraction of a food product from a capsule to produce a beverage and a capsule containing a food product that can be extracted from the capsule in the device, the capsule having a peripheral edge forming a collar, the device comprising a first fixed part, a second movable part, moveable relative to the first fixed part along an axis of movement, a housing configured to receive the capsule and define, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule along an axis of the housing, an insertion and positioning part comprising guidance means having insertion slides for slideably receiving the collar of the capsule inserted into the insertion slides and to guide the capsule by gravity to an intermediate position, the guidance means further including stopping means arranged retain the capsule in the intermediate position against gravity such that the collar of the capsule bearing on the stopping means, and a beverage delivery system, wherein the second moveable part is constructed and arranged such that upon movement of the second movable part into the closed position, the moveable part acts on the capsule to displace it from the intermediate position forcing the collar of the capsule to pass the stopping means, and to push the capsule along the axis of movement of the moveable part to the extraction position. [0024] In another aspect, the present invention provides a method for extracting a beverage from a capsule containing a food product, the method comprising: providing a capsule containing a food product for extraction in an extraction device, the capsule having a guiding edge in the form of a collar; providing an extraction device for extracting the food product from the capsule, the device comprising: a first fixed part; a second movable relative to the first fixed part along an axis of movement; and a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing; inserting the capsule into an insertion and positioning part of the extraction device, the insertion and positioning part comprising guidance means having insertion slides for -9 slideably receiving the collar of the capsule inserted into the insertion slides and to guide the capsule by gravity to an intermediate position, the guidance means further including stopping means arranged retain the capsule in the intermediate position against gravity with the collar of the capsule bearing on the stopping means; moving the moveable part toward the fixed part of the device such that during its travel towards closed position, the moveable part engages the capsule retained by the stopping means in the intermediate position to force the capsule collar to pass the stopping means allowing the capsule to be pushed to the extraction position by the moveable part; feeding a liquid to the capsule; and then extracting a beverage from the capsule. [0025] The capsules that can be extracted with the device according to the invention are of any type, for example open capsules, of the filter paper capsule type or also rigid or semi-rigid capsules of cylindrical shape or frustoconical shape that are the subject of patents in the name of the Applicant, that is EP 512'148 and EP 602'203. In a preferred embodiment, the capsule is asymmetric and comprises a guidance edge which is handled by the guidance means of the device. Thus, an asymmetric capsule along a guidance edge makes it possible to make the capsule tilt slightly relative to the extraction axis. Such a tilt has the advantage of being able to act on the capsule when it is re-established in the axis of extraction as will be explained hereinafter. However, the device according to the invention may also operate with symmetric capsules. [0026] The capsules may contain any type of soluble or extractable food product, for example roasted or ground coffee, soluble coffee, soluble cocoa, milk, tea, dehydrated substances for soups and other products and any combinations of these products. [0027] For reasons of simplicity, the device of the invention preferably comprises a first part that is fixed and a second part that is movable relative to the first part. However, there is nothing against providing a first part and a second part that are both movable. [0028] In fact, the device according to the invention makes it possible to cause the capsule to travel from an intermediate position to an extraction position: it is held in its intermediate position, it travels into its extraction position and when the second movable part is opened after extraction, the capsule is released naturally under the simple effect of gravitation. It falls into a drawer or any other means of used capsule retrieval and the consumer is ready to reload the device.

-10 [0029] Preferably, the device comprises means of stopping the capsule. These stopping means are configured to keep the capsule in the intermediate position when the capsule is inserted into the insertion and positioning part. These stopping means keep the capsule in an axis offset or inclined relative to the axis of the capsule in the extraction position in the housing. The extraction position corresponds to the position in which the movable part is closed against the fixed part while enclosing the capsule. [0030] It may be noted that the housing may be made in the movable part or the fixed part or else be divided between both in the fixed part and the movable part. [0031] So, to travel from the intermediate position to the extraction position, there are at least two solutions. [0032] A first solution consists of keeping the capsule in the intermediate position in a manner offset relative to the axis of the capsule in the extraction position, for example, so that the movable part in its movement acts on the capsule to lower it and push it along the axis of said movable part in its extraction position. The capsule may be offset along its recentering axis (or extraction axis), for example parallel to the latter, or be inclined relative to its recentering axis at a certain angle, preferably a small angle, less than 30 degrees. Such a solution makes it possible to prevent any mechanical complexity and uses a minimum of moving pieces. Specifically, the capsule may be simply kept in the intermediate position by static stopping means and it is the movable part that handles the moving of the capsule when it is moved toward the fixed part and then comes to position it in the extraction position. [0033] In a first preferred embodiment, the movable part is thus configured to force the capsule to travel beyond the stopping means when the capsule travels from its intermediate position to its extraction position. Thus, when the movable part drives the capsule, the latter being positioned in an offset or inclined axis, the capsule is forcibly re-established in the axis of movement of the movable part corresponding to the axis of the capsule in the extraction position, which forces the capsule to travel beyond the stopping means. Once the stopping means have been passed by the capsule, the latter is placed in the extraction position by at least one of the parts closing against the other and pressing the capsule against the extraction part. Once the two parts have reopened, the capsule is no longer held by the stopping means and can therefore be released. It can be understood that such a configuration provides more simplicity and reliability than the known systems.

- 11 [0034] A second possibility is that the movable part simply pushes the capsule in its axis of travel into its extraction position. Thus, the device comprises stopping means configured to hold the capsule in the intermediate position along an axis substantially coaxial with the axis of the housing. In a preferred embodiment, the movable part acts on the opening of the stopping means in order to move them aside when the capsule travels from its intermediate position to its extraction position. [0035] The fixed part comprises a guide body for the movement in translation of the movable part toward the fixed part. The guide body may, for example, be oriented substantially horizontally to guide the movable part in a horizontal movement. This guide body consists, for example, of at least two rails, preferably four guide rails. The device according to the invention allows an extraction by horizontal water injection. The movable part is preferably substantially cylindrical. [0036] In the device according to the invention, the insertion and positioning part of the capsule is placed in front of and perpendicular to the guide body and comprises at least one guidance means. Preferably, it comprises two guidance means. These means may be of any kind; for example, in the case of the extraction of a capsule according to patent EP 512'148, they are insertion slides allowing the engagement of the capsule collar. [0037] To keep the capsule in the intermediate position, in a first embodiment, the guidance means comprise at least one stopping means placed at the same level in order to keep the capsule in said intermediate position. Preferably, the guidance means comprise two stopping means. These means may be of any kind, for example stopping bosses, of just sufficient height to immobilize the capsule. The bosses interact with an edge of the capsule, such as a collar, for example. The bosses thus hold the capsule by the collar bearing on the bosses. The passage from the bearing position to the release position may be achieved by forcing the collar to travel beyond the bosses, the latter being able to be fixed or elastically retractable. [0038] In another embodiment of the device according to the invention, the guidance means are pivoting and form or comprise stopping means arranged to immobilize the capsule in the intermediate position when the movable part is in the open position and to release the capsule when the movable part is in the closed position. These guidance means are actuated in the immobilization or release position by an actuating lever, mounted rotatably and placed on the outside of the movable part: this lever, by the movement of the movable part, places the guidance means in the immobilization or release position.

-12 [0039] In a final embodiment of the device according to the invention, the latter comprises, in front of the guide body, a retractable stop, placed beneath the movable part. This retractable stop is also actuated by the movement of the movable part: it makes it possible to keep the capsule in position when the movable part is in the open position. [0040] The device also comprises an extraction plate toward which the movable part moves the capsule in the extraction position. The capsule usually comprises an extraction face which is placed in contact with, or at least is brought sufficiently close to, the extraction plate when the device is closed. If a filter paper capsule is extracted, this plate is a simple plate pierced with holes to allow the extraction liquid to pass through. If the capsule is a capsule according to the two patents mentioned hereinabove, such as for example a capsule having a face intended to tear as the pressure rises in the capsule, it is a plate comprising either pyramids or spikes as mentioned in the patents EP 512'142 and EP 604'615. [0041] The movable part is moved by the means providing the movement into the open and closed position. These means may take various forms. Use is preferably made of means that are mechanically simple, such as systems with transmission by rods combined with an immobilization system of the ball-and-socket joint type. Any other solution giving a substantially linear movement is also possible, for example hydraulic, electric or mechanical systems, for example with screws. [0042] As already mentioned hereinabove, at the end of extraction, the opening of the movable part allows the capsule to fall by gravitation. [0043] The operation of the device in the first embodiment is as follows: the consumer inserts a capsule via the insertion slide. The capsule is guided, for example, by a peripheral edge forming a collar which is inserted into said slide. The stopping means immobilize the capsule in the intermediate position; in particular, its peripheral edge is held by the stopping means. The consumer acts on the means allowing the closure of the movable part, so that the movable part takes the capsule into its housing and lowers the axis of the capsule to bring it into the axis of movement of the movable body, which has the effect that the collar of the capsule passes over the stopping means and is positioned in the extraction position beneath these stopping means. The extraction takes place and when the movable part is opened, the capsule falls by gravitation because it is no longer held by the stopping means. [0044] Figures 7 to 13 below show the operation in the other embodiments.

-13 [0045] The device according to the invention is incorporated into a coffee machine or other extraction system comprising furthermore a water tank, a water pipe, a pump for moving the water, means of heating the water and a water outlet in the movable part and any other element normally present in a coffee machine or other extraction system. "Other extraction system" means multi-drink, espresso and other extraction systems. [0046] The invention also relates to a coffee machine comprising the device thus described. The machine furthermore comprises a water tank, a water pipe, a pump for moving the water, means of heating the water and a water outlet in the movable part of the device of the invention. [0047] Advantageously, the present invention at least in a preferred form provides the consumer with an extraction system that is of simpler design, less costly and mechanically reliable. More advantageously the invention makes it easier to insert a capsule into a device for the extraction of this capsule; in particular, to allow the insertion and positioning of a capsule in an extraction device without trial and error, and without excessive manipulations and without risk of incorrectly positioning the capsule in said device. Advantageously the invention reduces the number of pieces necessary, in particular, the number of movable pieces of the device in order to reduce its complexity and its production cost. [0048] The rest of the description is made with respect to the drawings, according to which: [0049] fig. 1 is a view in perspective of a device according to the invention in the open position, [0050] fig. 2 is the same view as that in figure 1, without the guide body so that it is easier to understand the movement of the movable part, [0051] fig. 3 is a view in perspective of the device according to the invention in the closed position, [0052] fig. 4 is a side view in the closed position, [0053] fig. 5 is a view in the axis A of positioning the capsule in the intermediate position, and -14 [0054] fig. 6 is the same view as in figure 5 with the capsule in the extraction position, [0055] fig. 7 is a view in perspective according to a second embodiment, with the movable part in the closed position, [0056] fig. 8 is a view in perspective according to the preceding figure, with the movable part in the open position, [0057] figs. 9 and 10 are views in the axis of the extraction plate, [0058] figs. 11 to 13 are schematic views of the device according to the invention in a final embodiment. [0059] With reference to figures 1 to 6, the extraction device 1 comprises a fixed part 2 and a movable part 3. The part 3 comprises a housing 4 for the capsule to be extracted. The insertion and positioning part of the capsule 16 comprises two guidance means 6, 7, in which the capsule slides for positioning it. The capsule may thus be furnished with a collar which slides across the guidance means. The capsule is held in a position offset relative to the axis 25 of movement of the movable part. Since the capsule is asymmetric relative to its collar, the capsule also inclines slightly because its center of gravity is offset relative to the collar. This offset assists with the capsule being received by the housing of the movable part when it moves. The movable part 3 is moved by means 8 closing and opening it. These means consist of a ball-and-socket joint system comprising a lever arm 9 fixedly attached to an operating shaft 10. This shaft is fixedly attached to two pairs of rods respectively 11 and 12. The rods 11 and 12 are joined together along a spindle of the rods 13. The rods 12 are fixedly attached by a system of screws 18 to the movable body 3. The movable body 3 moved by the ball-and socket joint system slides in a guide body 14 consisting of four rails 15. When the ball-and socket joint system closes, the spindle 13 of the rods is stopped in its movement by the stop 24. The capsule 16 is designed to go and press against an extraction plate 17 when said capsule is extracted. The drink flows through the pouring system 19 into a cup not shown. The device according to the invention finally comprises, in the guidance means 6, 7, two identical stopping means 20 allowing the capsule to be held in the intermediate position. The screws 21, 22 make it possible to fixedly attach the pouring system to the extraction plate. A water outlet 23 is provided on the rear of the movable body.

-15 [0060] The device according to the invention operates as follows: the consumer inserts the capsule 16 through the insertion slides 6, 7. The capsule slides until it reaches the stopping means 20: the collar of the capsule presses against these means and the capsule is in the intermediate position, as is also clearly seen in figure 5: the axis of the capsule is indicated by reference number 26 and the axis of the movable body by reference number 25. Since the capsule is asymmetric relative to the plane passing through its collar, the axis of the capsule tends to incline slightly relative to the axis of movement of the movable part. The consumer then operates the lever 9, which moves the movable body 3 via the rod system. This movable body moves along its axis 25: during this movement, it causes the capsule 16 to enter into its housing 4, which has the effect of lowering the axis 26 of the capsule toward the axis 25 of the movable body. The consequence is that the collar of the capsule passes beneath the stopping means 20. The consumer then gives the instruction to feed the hot water through the pipe 23 in the movable body: the water traverses the capsule; through the rise in pressure, the capsule opens against the extraction plate and the coffee flows through the outlet 19 into a cup placed beneath. When the extraction is complete, the consumer raises the lever 9, which sets the movable body in motion rearward, releases the capsule which is no longer held and which thus falls into a used capsule recovery system. The device is then ready for the next extraction. [0061] With reference to figures 7 to 10, the device according to the invention is more represented relative to the means of guiding and immobilizing the capsule, than relative to the movable part and the means of moving said movable part. The extraction plate 30 comprises, as a means of guiding 31 the capsule 32, two elements pivoting about a spindle 33. Each pivoting element comprises two positioning stops, one internal 39, the other external 40, better shown in figures 9 and 10. The movable part 34 comprises a housing 35 for the capsule and on either side a boss 41. The means for moving the movable part are not shown. On both sides of the movable part, an actuating lever 36 has been placed, turning along the axis 37 and comprising a movement finger 38 of the guidance means 31 and two zones of action, front 42 and rear 43, of said actuating lever 36. [0062] The operation is as follows: [0063] In the open position, that is according to figure 8, the movement finger 38 of the actuating lever 36 holds the pivoting guidance means 31 in the position of retention of the capsule 32 (figure 10), because said finger acts on the internal stop 39 of the pivoting element 31. When the movable part 34 moves toward the extraction plate 30, the boss 41 releases the front action zone 42 and goes to position itself toward the rear action zone 43, so that the -16 movement finger 38 pushes the external positioning stop 40 outward. The consequence of this is that the pivoting guidance means moves away, which means that, when the movable part is opened, the capsule will no longer have any retention. [0064] Figures 11 to 13 give another embodiment of the immobilizing of the capsule. The fixed part 50 comprises an extraction plate 55 and a drink pouring system 53. Beneath the intermediate positioning location of the capsule 56, there is a retractable stop 51, that rotates on the spindle 54. The finger 57 makes it possible to retain the capsule. Finally the device comprises an element 52, fixedly attached to the movable part and thus acting on the retractable stop to open it and close it. [0065] The operation is as follows: [0066] Figure 11 shows when the movable part is in movement to open. So that the element 52 causes the retractable stop to tilt downward, which releases the capsule. Figure 12 shows the end of the opening stroke of the movable part, when the retractable stop has returned to the position for immobilizing the capsule 56. Finally, figure 13 shows the position of the retractable stop at the time of extraction of said capsule 56. [0067] It is well understood that the device according to the invention forms part of a coffee machine comprising all the elements making it possible to extract the capsules, that is to say a water tank, a water inlet pipe, a pump for moving the water, means of heating the water and a water inlet in the movable part.

Claims (93)

1. A capsule extraction device (16, 32, 56) comprising - a first part (2, 30, 50), - a second part (3, 34) that can be moved relative to the first part, - a housing (4, 35) for the capsule and defining, in the closed position of the movable part against the fixed part, an extraction position of the capsule along an axis (25) in said housing, - an insertion and positioning part comprising means (6, 7, 31) of guiding the capsule arranged so as to insert the capsule by gravity and position said capsule in an intermediate position, - a drink pouring system (19, 53), wherein the second movable part (3, 34) is configured to move the capsule (16, 32, 56) from the intermediate position into the extraction position when the device is closed.

2. The device as claimed in claim 1, wherein the device comprises stopping means (20) configured to keep the capsule (16) in the intermediate position along an axis (26) offset relative to the axis (25) of the capsule in the extraction position in the housing (4).

3. The device as claimed in claim 2, wherein the second movable part (3) is configured to force the capsule (16) to go past the stopping means (20) when the capsule travels from its intermediate position to its extraction position.

4. The device as claimed in claim 1, wherein the device comprises stopping means (31, 51, 52, 57) configured to keep the capsule (32, 56) in the intermediate position along an axis substantially coaxial with the axis (25) of the housing.

5. The device as claimed in claim 4, wherein the second movable part (34) acts on the opening of the stopping means (31) to move them aside when the capsule travels from its intermediate position to its extraction position.

6. The device as claimed in any one of the preceding claims, wherein the first part (2, 30) is fixed and comprises a substantially horizontal guide body (14) to guide in translation the second movable part (3, 34) toward the first fixed part (2, 30). -14

7. The device as claimed in claim 6, wherein the part for inserting and positioning the capsule is placed in front of the guide body (14) and comprises two guidance means (6, 7, 31).

8. The device as claimed in claim 5, wherein the guidance means (31) are pivoting and form or comprise stopping means arranged to immobilize the capsule (32) in an intermediate position when the second movable part (34) is in the open position allowing the insertion of a capsule and to release the capsule when the second movable part (34) is in the closed position; in order to allow the capsule to move from this intermediate position to the extraction position and to allow said capsule to be released when the second movable part (34) is reopened.

9. The device as claimed in claim 1, wherein the device comprises, in front of the guide body (31), a retractable stop (51), placed beneath the movable part.

10. The device as claimed in any one of claims 1 to 9, wherein the device comprises an extraction plate (30, 55) toward which the second movable part (3, 34) moves the capsule to the extraction position.

11. The device as claimed in any one of claims 1 to 10, wherein the second movable part (3, 34) is moved by means (8) ensuring the movement to the open and closed position.

12. The device as claimed in claim 11, wherein the means (8) ensuring the movement are a system of rods (9, 10, 11, 12, 18).

13. The device as claimed in any one of claims 1 to 12, wherein the reopening of the second movable part (3, 34) allows the capsule to fall by gravitation.

14. The device as claimed in claim 13, wherein the capsule is guided in its fall by the guidance means (6, 7, 31).

15. A coffee machine comprising the device as claimed in any one of claims 1 to 14, wherein the machine comprises, in addition, a water tank, a water pipe, a pump for moving the water, means of heating the water and a water outlet in the movable part of the device.

16. A device for extraction of a capsule comprising: - a first part; - a second part which is moveable relative to the first part; -15 - a housing for the capsule, which, in the position of closure of the moveable part against the first part, defines a position of extraction of the capsule according to an axis in the said housing; - a part for introduction and positioning, comprising means for guiding the capsule, which are arranged such as to insert the capsule by gravity, and to position the said capsule in an intermediate position; - a drink pouring system the second, moveable part being configured to displace the capsule from the intermediate position to the position of extraction during closure of the device; and stopping means wherein the second, moveable part acts on the opening of the stopping means in order to move them apart during passage of the capsule from the intermediate position to its position of extraction.

17. A device according to claim 16, wherein the stopping means are configured to retain the capsule in the intermediate position according to an axis which is substantially coaxial to the axis of the housing.

18. A device according to any one claims 16 to 17, wherein the first part is fixed and comprises a substantially horizontal guide body in order to guide the second, moveable part in translation towards the first, fixed part.

19. A device according to claim 18, wherein the part for introduction and positioning of the capsule is arranged in front of the guide body and comprises two guide means.

20. A device according to claim 19, wherein the guide means are pivoting, and form or comprise stop means which are arranged in order to block the capsule in the intermediate position when the second, moveable part is in the opening position, thus permitting insertion of a capsule, and in order to release the capsule when the second, moveable part is in the closure position, such as to allow the capsule to be displaced from this intermediate position to the position of extraction, and to allow the said capsule to be released when the second, moveable part is reopened.

21. A device according to any one claims 16 to 20, comprising an extraction plate, towards which the second, moveable part displaces the capsule in the position of extraction.

22. A device according to any one claims 16 to 21, wherein the second, moveable part is moved by means which assure the displacement into the opening and closure positions. -16

23. A device according to claim 22, wherein the means which assure the displacement are a system of connecting rods.

24. A device according to claims 16 to 23, wherein the reopening of the second, moveable part permits dropping of the capsule by means of gravity.

25. A device according to claim 24, wherein the capsule is guided in its fall by the guide means.

26. A coffee machine comprising the device according to any one of the preceding claims, wherein the machine additionally comprises a water reservoir, a water duct, a pump for the displacement of the water, means for heating the water, and a water intake in the mobile part of the device.

27. A device for extraction of a beverage from a capsule containing an extractable food product, said device comprising: a first part; a second moveable part that can be moved relative to the first part; a housing for the capsule defining, in a closed position of the movable part against the first part, an extraction position of the capsule along an axis in said housing; an insertion and positioning part comprising guidance means for guiding the capsule, arranged so as to insert the capsule by gravity, and to position the capsule in an intermediate position; a drink pouring system, wherein the second, moveable part is configured to move the capsule from the intermediate position into the extraction position when the movable part is moved into the closed position, wherein the device comprises stopping means moveable between a position to retain the capsule in the intermediate position and release position to release the capsule; and wherein the second, moveable part is configured to move the stopping means into the release position during passage of the moveable part into the closed position.

28. A device according to claim 27, wherein the stopping means are configured to retain the capsule in the intermediate position along an axis which is substantially coaxial to the axis of the housing. -17

29. A device according to claims 27 or 28, wherein the first part is fixed and comprises a substantially horizontal guide body in order to guide in translation the second, moveable part towards the first, fixed part.

30. A device according to claim 29, wherein the insertion and positioning part is arranged in front of the guide body and said guidance means comprises a pair of pivoting guidance elements.

31. A device according to claim 28, wherein the guidance means form or comprise said stopping means arranged in order to immobilize the capsule in the intermediate position when the second, moveable part is in an open position, thus permitting insertion of a capsule, and to release the capsule when the second, moveable part is in the closed position, in order to allow the capsule to be displaced from this intermediate position to the extraction position, and to allow said capsule to be released when the second, moveable part is reopened.

32. A device according to claims 27 to 31, comprising an extraction plate, towards which the second, moveable part displaces the capsule in the extraction position.

33. A device according to claims 27 to 32, wherein the second, moveable part is moved by means which assure the displacement into the open and closed positions.

34. A device according to claim 33, wherein the means which assure the displacement are a system of connecting rods.

35. A device according to claims 27 to 34, wherein the reopening of the second, moveable part permits dropping of the capsule by means of gravity.

36. A device according to claim 35, wherein the capsule is guided in its fall by the guidance means.

37. A coffee machine comprising the device according to claims 27 to 36, wherein the machine additionally comprises a water reservoir, a water pipe, a pump for the displacement of the water, means for heating the water, and a water intake in the mobile part of the device.

38. A system comprising a device according to any one of claims 27 to 36, and an asymmetrical capsule comprising a guide edge which is controlled by the guidance means of the device. -18

39. A system according to claim 38 wherein the capsule contains roasted ground coffee.

40. A device for extraction of a capsule comprising: a fixed first part including an extraction plate; a moveable second part including a housing for the capsule, said second part being moveable relative to the first part along an axis and between an open position spaced from said extraction plate and a closed position adjacent the extraction plate thereby to hold the capsule in said housing in an extraction position; an insertion and positioning part comprising: guidance means for guiding the capsule to an intermediate position when inserted into the device; and stopping means moveable between a position to retain the capsule in the intermediate position along an axis which is substantially coaxial to the axis of the housing, and a release position; wherein the device is configured such that moving the second part from the open position toward the closed position urges: said capsule inserted into the intermediate position, to the extraction position; and the stopping means from the position to retain the capsule in the intermediate position, to the release position.

41. A device according to claim 40, wherein the insertion and positioning includes a pair of pivoting guidance elements each pivotably mounted on opposing sides of said housing axis for pivoting movement of said stopping means between the position to retain the capsule in the intermediate position and the release position.

42. A device according to claim 41, wherein the guidance elements are arranged in order to immobilize the capsule in the intermediate position when the second, moveable part is in the open position, thus permitting insertion of a capsule, and to release the capsule when the second, moveable part is in the closed position, in order to allow the capsule to be displaced from this intermediate position to the extraction position, and to allow said capsule to be released when the second, moveable part is reopened.

43. A device according to claim 40 or 41, wherein said pair of guidance elements is actuated by a corresponding pair of actuating levers. -19

44. A device according to claim 43, wherein the each actuating lever is actuated by movement of said moveable part.

45. A coffee machine comprising the device according to any one of claims 40 to 44, wherein the machine additionally comprises a water reservoir, a water pipe, a pump for the displacement of the water, means for heating the water, and a water intake in the mobile part of the device.

46. An extraction system comprising: a device for extraction of a capsule and a capsule that can be extracted in the device, the capsule having a guiding edge in the form of a collar, the device comprising: a first fixed part, a second movable part that can be moved relative to the first fixed part, a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing, an insertion and positioning part comprising means for guiding the capsule arranged so as to insert the capsule by gravity and position the capsule in an intermediate position, the guiding edge of the capsule being taken charge of in the means for guiding, the means for guiding being insertion slides allowing the engagement of the collar; and a beverage delivery system, wherein the second moveable part is so constructed and arranged to displace the capsule from the intermediate position to the extraction position when the second movable part is moved into the closed position, wherein the means for guiding comprises stopping means configured to retain the capsule in the intermediate position, the collar bearing against the stopping means in the intermediate position, the second movable part takes charge of the capsule to displace it from the intermediate position to the extraction position on the axis of the capsule in the extraction position in the housing such that in its movement, the second movable part acts on the capsule to move it downwards, the collar of the capsule passing beneath the stopping means, and to push it along the axis of the second movable part in its extraction position.

47. The extraction system of claim 46, wherein the capsule is in the form of a truncated cone. - 20

48. The extraction system of claim 46, wherein the capsule is selected from the group consisting of an open capsule of the filter paper capsule type, a rigid or semi-rigid capsule in cylindrical form, a truncated cone form, and combinations thereof.

49. The extraction system of claim 46, wherein the capsule contains a food product selected from the group consisting of ground roasted coffee, soluble coffee, soluble cocoa, milk, tea, dehydrated substances for bouillons, and combinations thereof.

50. The extraction system of claim 46, wherein the stopping means retain the capsule in a inclined fashion with respect to the axis of the capsule in the extraction position in the housing such that the capsule tilts slightly with respect to the axis of the capsule in the extraction position.

51. The extraction system of claim 50, wherein the stopping means retain the capsule in the inclined fashion at a small angle of less than 30 degrees with respect to the axis of the capsule in the extraction position.

52. The extraction system of claim 46, wherein the capsule is asymmetrical with respect to a plane passing through the collar in such a way as to be able to be tilted due to its centre of gravity being offset with respect to the collar.

53. The extraction system of claim 46, wherein the second moveable part is configured to force the capsule's collar to pass beneath the stopping means, in particular beneath bosses, during the passage of the capsule from its intermediate position to its extraction position.

54. The extraction system of claim 53, wherein the bosses retain the capsule by support of the capsule's collar on the bosses.

55. The extraction system of claim 46, wherein the means for guiding comprise introduction runners.

56. The extraction system of claim 46 further comprising an extraction plate towards which the second moveable part displaces the capsule into the extraction position.

57. The extraction system of claim 56, wherein the extraction plate comprises pyramids or spikes. - 21

58. The extraction system of claim 56, wherein the extraction plate is perforated with holes to allow an extraction liquid to pass, and the capsule is made from filter paper.

59. The extraction system of claim 46, wherein the capsule has a side intended to tear under an increase in pressure inside the capsule.

60. A method for extracting a beverage from a capsule, the method comprising: inserting the capsule into an extraction device; immobilizing the capsule in an intermediate position, where the capsule is arranged on an axis offset relative to the axis of the capsule in an extraction position where the capsule is arranged on an axis of a moveable part of the device; moving the moveable part toward a fixed part of the device such that the moveable part forces the capsule out of the intermediate position and transfers it to the extraction position; feeding a liquid to the capsule; and then extracting a beverage from the capsule.

61. The method of claim 60 further comprising guiding the capsule with means for guiding during insertion of the capsule.

62. The method of claim 61, wherein the means for guiding are insertion slides.

63. The method of claim 62, wherein the stopping means are bosses.

64. The method of claim 60 further comprising operating a lever to move the moveable part toward the fixed part.

65. The method of claim 60 further comprising feeding a hot liquid into the capsule such that the capsule opens against an extraction plate due to an increase in pressure in the capsule.

66. The method of claim 60 further comprising raising a lever to move the moveable part away from the fixed part to release the capsule to allow the capsule to fall by gravitation.

67. The method of claim 60, wherein the fixed part comprises a substantially horizontal guide body to guide in translation the moveable part toward the fixed part. - 22

68. The method of claim 60, wherein the capsule is immobilized in the intermediate position using stopping means and the capsule collar is forced beyond/below the stopping means.

69. A method for extracting a beverage from a capsule, the method comprising: providing a capsule comprising a guiding edge in the form of a collar and an extraction device comprising a first fixed part and a second moveable part that is moveable relative to the first part; inserting the guide edge of the capsule into means for guiding and guiding the capsule in its fall under the force of gravity to an intermediate position, the means for guiding comprising insertion slides allowing the engagement of the collar; the capsule being immobilized in the intermediate position using stopping means, in the intermediate position the capsule being arranged on an axis offset relative to the axis of the capsule in an extraction position, in the extraction position the capsule being arranged on an axis of the moveable part; moving the moveable part toward the fixed part of the device such that the moveable part forces the capsule out of the intermediate position to the extraction position during its travel towards the extraction position by causing the collar of the capsule to pass beneath the stopping means; feeding a liquid to the capsule; and then extracting a beverage from the capsule.

70. The method of claim 69 further comprising operating a lever to move the moveable part toward the fixed part.

71. The method of claim 69 further comprising feeding a hot liquid into the capsule such that the capsule opens against an extraction plate due to an increase in pressure in the capsule.

72. The method of claim 69 further comprising raising a lever to move the moveable part away from the fixed part to release the capsule to allow the capsule to fall by gravitation.

73. The method of claim 69, wherein the fixed part comprises a substantially horizontal guide body to guide in translation the moveable part toward the fixed part.

74. A method for extracting a beverage, the method comprising: providing a capsule that can be extracted in an extraction device, the capsule having - 23 a guiding edge in the form of a collar; providing an extraction device for extraction of the capsule, the device comprising a first fixed part, a second movable part that can be moved relative to the first fixed part, a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing; inserting the capsule into the extraction device by an insertion and positioning part comprising means for guiding the capsule inserted under gravity and positioning the capsule in an intermediate position, the means for guiding taking charge of the guiding edge of the capsule, the means for guiding being insertion slides allowing the engagement of the collar; providing a liquid to the capsule; and liquid being extracted from the capsule in the extraction position, wherein the second moveable part is so constructed and arranged to displace the capsule from the intermediate position to the extraction position as the second movable part is moved into the closed position, wherein the means for guiding comprises stopping means configured to retain the capsule in the intermediate position, the collar bearing against the stopping means in the intermediate position, the second movable part taking charge of the capsule to displace it from the intermediate position to the extraction position such that in its movement, the second movable part acts on the capsule (i) to lower it such that the collar of the capsule passes beneath the stopping means, and (ii) to push it along the axis of the second movable part into its extraction position.

75. The method of claim 74, wherein the capsule is in the form of a truncated cone.

76. The method of claim 74, wherein the capsule is selected from the group consisting of an open capsule of the filter paper capsule type, a rigid or semi-rigid capsule in cylindrical form, a truncated cone form, and combinations thereof.

77. The method of claim 74, wherein the capsule contains a food product selected from the group consisting of ground roasted coffee, soluble coffee, soluble cocoa, milk, tea, dehydrated substances for bouillons, and combinations thereof. - 24

78. The method of claim 74, wherein the stopping means retain the capsule in an inclined fashion with respect to the axis of the capsule in the extraction position such that the capsule tilts slightly with respect to the axis of the capsule in the extraction position.

79. The method of claim 78, wherein the stopping means retain the capsule in the inclined fashion at a small angle of less than 30 degrees with respect to the axis of the capsule in the extraction position.

80. The method of claim 74, wherein the capsule is asymmetrical with respect to a plane passing through the collar in such a way as to be able to be tilted due to its centre of gravity being offset with respect to the collar.

81. The method of claim 74, wherein the second moveable part is configured to force the capsule's collar to pass beneath the stopping means, such as bosses, during the passage of the capsule from its intermediate position to its extraction position.

82. The method of claim 81, wherein bosses defined by the stopping means retain the capsule by supporting the capsule's collar.

83. The method of claim 74, wherein the means for guiding comprise insertion runners.

84. The method of claim 74 further comprising an extraction plate towards which the second moveable part displaces the capsule into the extraction position.

85. The method of claim 84, wherein the extraction plate comprises pyramids or spikes.

86. The method of claim 84, wherein the extraction plate is a perforate plate with holes to allow an extraction liquid to pass when the capsule is made from filter paper.

87. The method of claim 74, wherein the capsule has a side intended to tear under an increase in pressure inside the capsule.

88. A capsule for use in the extraction system as defined in any one of claims 46 to 59, the capsule having a collar constructed and arranged (i) to bear against the stopping means and retaining the capsule in the intermediate position; and - 25 (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position.

89. A frustoconical capsule for use in the extraction system as defined in any one of claims 46 to 59, the capsule having a collar constructed and arranged (i) to bear against the stopping means and cause the capsule to tilt in the intermediate position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position.

90. A capsule for use in the method as defined in any one of claims 60 to 68, in which the capsule has a collar constructed and arranged (i) to bear against the stopping means to retain the capsule in the intermediate position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position.

91. A frustoconical capsule for use in the method as defined in any one of claims 60 to 68, in which the capsule has a collar constructed and arranged (i) to bear against the stopping means to retain the capsule in the intermediate position and cause the capsule to tilt in that position; and (ii) to be forced beyond the stopping means in response to the movement of the moveable part towards the extraction position.

92. An extraction system comprising: a device for extraction of a food product from a capsule to produce a beverage and a capsule containing a food product that can be extracted from the capsule in the device, the capsule having a peripheral edge forming a collar, the device comprising a first fixed part, a second movable part, moveable relative to the first fixed part along an axis of movement, a housing configured to receive the capsule and define, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule along an axis of the housing, an insertion and positioning part comprising guidance means having insertion slides for slideably receiving the collar of the capsule inserted into the insertion slides and to guide the capsule by gravity to an intermediate position, the guidance means further including - 26 stopping means arranged retain the capsule in the intermediate position against gravity such that the collar of the capsule bearing on the stopping means, and a beverage delivery system, wherein the second moveable part is constructed and arranged such that upon movement of the second movable part into the closed position, the moveable part acts on the capsule to displace it from the intermediate position forcing the collar of the capsule to pass the stopping means, and to push the capsule along the axis of movement of the moveable part to the extraction position.

93. A method for extracting a beverage from a capsule containing a food product, the method comprising: providing a capsule containing a food product for extraction in an extraction device, the capsule having a guiding edge in the form of a collar; providing an extraction device for extracting the food product from the capsule, the device comprising: a first fixed part; a second movable relative to the first fixed part along an axis of movement; and a housing configured to receive the capsule and defining, in a closed position of the second movable part against the first fixed part, an extraction position of the capsule on an axis in the housing; inserting the capsule into an insertion and positioning part of the extraction device, the insertion and positioning part comprising guidance means having insertion slides for slideably receiving the collar of the capsule inserted into the insertion slides and to guide the capsule by gravity to an intermediate position, the guidance means further including stopping means arranged retain the capsule in the intermediate position against gravity with the collar of the capsule bearing on the stopping means; moving the moveable part toward the fixed part of the device such that during its travel towards closed position, the moveable part engages the capsule retained by the stopping means in the intermediate position to force the capsule collar to pass the stopping means allowing the capsule to be pushed to the extraction position by the moveable part; feeding a liquid to the capsule; and then extracting a beverage from the capsule.