Device for preparing a drink by extracting a measured quantity, for example of ground coffee, contained in a capsule (1) equipped with an extraction membrane (7), said device comprising a water inlet (5), a capsule holder (2), a capsule cage (3), clamping means and a set of spikes (6) for piercing s
Device for preparing a drink by extracting a measured quantity, for example of ground coffee, contained in a capsule (1) equipped with an extraction membrane (7), said device comprising a water inlet (5), a capsule holder (2), a capsule cage (3), clamping means and a set of spikes (6) for piercing said membrane (3); characterized in that the clamping means comprise a piston (4) mounted such that it can move with respect to the cage (3).
대표청구항▼
1. An extraction device for preparing a drink serving by extracting a beverage ingredient contained in a beverage cartridge which includes a cartridge flange defining an open end of the cartridge and an extraction membrane covering the open end, said device comprising: a cartridge holder for holding
1. An extraction device for preparing a drink serving by extracting a beverage ingredient contained in a beverage cartridge which includes a cartridge flange defining an open end of the cartridge and an extraction membrane covering the open end, said device comprising: a cartridge holder for holding the beverage cartridge by supporting the cartridge flange thereon,a spike support which includes a set of spikes fixed to the spike support and adapted to pierce the extraction membrane, the spike support is being moveably mounted with respect to the cartridge holder such that the set of spikes are opposed to the extraction membrane and are moveable between a starting position and an extraction position, the spike support being adapted to retract relative to the cartridge holder such that the set of spikes is spaced from the extraction membrane when in the starting position, and adapted to extend to the cartridge holder such that the set of spikes pierces the extraction membrane when in the extraction position,a cartridge cage which defines a cartridge space for accommodating the beverage cartridge, the cartridge cage including a lower engagement end adapted to engage the cartridge flange to positionally hold the cartridge flange against the cartridge holder,a clamping device which surrounds the cartridge cage, the clamping device including an upper unit and a clamping piston moveably mounted with respect to the upper unit and the cartridge cage, whereinthe clamping device and the cartridge cage are mounted to be moveable relative to one another in a closed position of the extraction device when the clamping device is clamped onto the spike support, and whereinthe cartridge cage is moveably mounted relative to the upper unit of the clamping device to move between an initial position with the lower engagement end spaced from the cartridge flange and an engaged position with the lower engagement end engaged with the cartridge flange, and whereinan expansion space for receiving pressurized water defined between an outer upper face of the cartridge cage and an inner upper wall of the clamping piston which opposes the outer upper face of the cartridge cage, the expansion space has a volume which increases when pressurized water is introduced therein, whereinthe clamping piston includes a lower clamp end which contacts the spike support and is adapted to move the spike support into the starting position in absence of the pressurized water in the expansion space, and whereinthe clamping piston is configured to move relative to the cartridge cage in the presence of pressurized water introduced into the expansion space from the starting position to the extraction position and the spike support is configured to move respectively in response to movement of the clamping piston from the starting position to the extraction position from the initial position to the extraction position thereof such that the set of spikes pierces the extraction membrane to allow extraction of the beverage ingredient. 2. The extraction device according to claim 1, in which the cartridge cage comprises a cartridge-ejecting component. 3. The extraction device according to claim 2, wherein the cartridge ejecting component has no cartridge piercing elements. 4. A method of using an extraction device according to claim 1, wherein the method comprises the following successive steps: (a) introducing the cartridge into the cartridge cage;(b) lowering the cartridge cage and the piston to cause the piston to directly contact the spike support such that the spike support and the set of spikes move downward, and the spikes are caused to retract into the cartridge holder; and(c) introducing pressurized water into the expansion space and into the cartridge such that the piston and the spike support move upward, and the spikes emerging through the cartridge holder are caused to pierce the extraction membrane. 5. The extraction device according to claim 1, wherein the serving is ground coffee. 6. The extraction device according to claim 1, wherein the cartridge cage has a cylindrical outer wall, and the clamping piston has a corresponding cylindrical inner wall, the cylindrical outer wall of the cartridge cage and the cylindrical inner wall of the clamping piston configured to provide a sliding surface for the relative movement between the cartridge cage and the clamping piston. 7. An extraction device for preparing a drink by extracting a serving of an ingredient contained in a cartridge equipped with an extraction membrane, wherein the device comprises: a water inlet,a cartridge holder,a cartridge cage,a clamping device surrounding the cartridge cage,an expansion space for receiving pressurized water defined between an outer upper face of the cartridge cage and an inner upper wall of the clamping piston which opposes the outer upper face of the cartridge cage, the expansion space has a volume which increases when pressurized water is introduced therein, anda spike support supporting a set of spikes intended to pierce the membrane of the cartridge, whereinthe clamping device is configured to be clamped onto the spike support, and whereinthe cartridge cage is configured to be axially translated between a first position where the membrane is not pierced by the spikes and a second position where the membrane is pierced by the spikes, the cartridge cage being axially translated inside the clamping device while the claiming device is clamped onto the spike support to close the clamping device. 8. The extraction device according to claim 7, wherein the set of spikes traverse the cartridge holder during axial translation of the cartridge cage between the first and second positions.
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이 특허에 인용된 특허 (3)
Beaulieu Roderick H. ; Wuertele James W. ; Sweeney Richard P. ; Sylvan John E. ; Woram Michael G. ; Focht Kenneth A. ; Kwo Jennie, Beverage filter cartridge holder.
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