Method for producing coffee using opposed pistons
AssigneeSteiner AG Weggis
InventorAdrian Steiner
Life of this patent
Estimating the term…
Abstract
In a method for producing coffee, coffee beans are ground very finely, with or without the addition of water, and a mixture of the coffee powder and water is formed, and the coffee is extracted from this mixture and preferably conveyed to an outlet. Coffee beans and the water in the grinding chamber can be supplied to at least one mill, and the coffee beans ground with the water supplied, and the mixture formed from this. To form the mixture, cold or hot water is supplied to the mill during the grinding process in the grinding chamber and/or after the grinding process. Thus, the coffee produced has an especially full-bodied flavor.
Claims19
A method for producing coffee at an outlet of a coffee machine, the method comprising:
- positioning a movable cylinder having a filling opening in a position in which the filling opening is in communication with a chamber defined in the movable cylinder between first and second pistons, the first piston being provided with a screen sieve and being connected to an outlet line, the first and second pistons having multiple relative positions in which the first and second pistons are spaced different distances from one another,
- forming a mixture of coffee powder and water in the chamber, the step of forming the mixture of coffee powder and water in the chamber comprising introducing, when the movable cylinder is in the position in which the filling opening is in communication with the chamber, the coffee powder through the filling opening into the chamber,
- closing, using a portion of the first piston, the filling opening of the movable cylinder after the coffee powder has been introduced into the chamber through the filling opening, then
- extracting the coffee from the mixture of coffee powder and water in the chamber by, while the movable cylinder is moving, reducing the distance between the first and second pistons to cause the coffee to be extracted from the mixture of coffee powder and water in the chamber and conveyed through the screen sieve of the first piston into the outlet line connected to the first piston, and then
- conveying the extracted coffee through the outlet line to the outlet of the coffee machine.
Dependencies are inferred from the claim text.