[특허]Cartridge with crema generating septum and method using same

ILLYCAFFE' S.P.A.

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Cartridge with crema generating septum and method using same

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47J-031/24 A47J-031/34 A47J-031/40 A47J-031/44 A47J-031/46 A47J-031/36 A47J-031/00
출원번호	US-0746771 (2007-05-10)
등록번호	US-9474405 (2016-10-25)
우선권정보	IT-MI2006A0945 (2006-05-12)
발명자 / 주소	Suggi Liverani, Furio Mastropasqua, Luca Van Eeden, Frans Dellapietra, Bruno
출원인 / 주소	ILLYCAFFE' S.P.A.
대리인 / 주소	Cantor Colburn LLP
인용정보	피인용 횟수 : 0 인용 특허 : 10

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A method for extracting an espresso coffee beverage by an espresso coffee machine is provided. The method includes providing an extraction chamber and a normally-closed septum arranged downstream of a coffee dose and made of elastic material and provided directly with a small orifice in the septum, injecting a preset dose of hot water into the chamber at a pressure ranging from 2 to 4 bars and for a first preset time interval keeping the septum closed, interrupting the injection of hot water for a second preset time interval, injecting hot water into the...

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1. A method for extracting an espresso coffee beverage by means of an espresso coffee machine, comprising: a) a step for providing an extraction chamber, which comprises a dose of roasted and ground coffee and a normally-closed septum which is arranged downstream of said coffee dose and which is made of elastic material and which is provided directly with a small orifice extending through a septum body from a first side facing the coffee dose to a second side opposite the first side;b) a preinfusion step, in which a preset dose of hot water is injected into said chamber at a pressure ranging from 2 to 4 bars and for a first preset time interval, keeping the septum closed;c) a step of imbibition wherein the injection of hot water is interrupted for a second preset time interval to allow for homogenization of said coffee dose with the water injected in said preinfusion step, said septum being closed during said step of imbibition;d) a step for injecting hot water into said chamber after said step of imbibition, outward dispensing of the beverage being prevented through the normally-closed septum; ande) an extraction step in which, when the water pressure reaches a preset value ranging from 6 to 9 bars, the septum is deformed to assume a concave profile relative to the water and is thereby opened in order to force the beverage to pass through said small orifice before it is dispensed into a cup, the size of said orifice being such as to keep the dose of coffee contained in the extraction chamber at a substantially uniform pressure along the direction of the flow of hot water, so that the espresso coffee beverage extracted through said orifice comprises crema. 2. The method according to claim 1, comprising providing said extraction chamber as a rigid cartridge which contains said dose of coffee and the septum. 3. The method according to claim 1, wherein, in said extraction step e), the pressure upstream of the dose of coffee ranges from 9 to 12 bars, the pressure downstream of said dose and upstream of said septum ranges from 6 to 7 bars, and the pressure downstream of said septum is atmospheric pressure. 4. The method according to claim 1, wherein during said preinfusion step b) and during said injection step d) the injected hot water has a temperature between 90-99° C. 5. The method according to claim 4 wherein the injected hot water has a temperature of 96° C. 6. The method according to claim 1, wherein said first preset time interval of said preinfusion step is 1.1 seconds, and wherein said second preset time interval of said imbibition step is 2.5 seconds. 7. A method for extracting a beverage, comprising: providing an extraction chamber with a dose of roasted, ground coffee and an elastic septum arranged downstream of the dose of coffee which is pre-perforated in a central point to have an orifice extending through a septum body from a first side facing the coffee dose to a second side opposite the first side;while keeping the septum closed, injecting hot water into the chamber at a pressure ranging from 2 to 4 bars for a first time interval;while keeping the septum closed, interrupting the injection for a second time interval to allow for homogenization of the dose of coffee with the injected hot water;following the second time interval and while keeping the septum closed, injecting hot water into the chamber; andupon water pressure in the chamber reaching a value ranging from 6 to 9 or more bars, opening the septum by deformation of the septum to assume a concave profile relative to the water and to thereby to force the beverage to pass through the orifice prior to dispensation,a size of the orifice being such as to keep the dose of coffee contained in the chamber at a substantially uniform pressure along a direction of flow of the hot water and such that the beverage extracted through the orifice comprises crema. 8. The method according to claim 7, wherein a pressure in the chamber upstream of the dose of coffee ranges from 9 to 12 bars, a pressure downstream of the dose of coffee and upstream of the septum ranges from 6 to 7 bars and a pressure downstream of the septum is atmospheric pressure.

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Cartridge with crema generating septum and method using same

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