Patent ID: 8163318

Claim:
A capsule for the preparation of a beverage in a beverage machine comprising: a brewing enclosure comprising at least one beverage ingredient; filtering means defining at least one filtering side of the brewing enclosure; beverage flow guiding means for guiding the beverage to a beverage outlet of the capsule; a shell and a protective cover attached to the shell and forming with the shell a gas tight container for the beverage ingredients; an overflow wall that is located in a path of a brewed liquid after the filtering means and comprises at least one overflow aperture, wherein the overflow wall and the cover face each other, and a portion of at least the side of the overflow wall facing the cover is designed to support the cover, and wherein the beverage flow guiding means comprise a beverage flow channel located on the side of the overflow wall facing the cover and connects at least one overflow aperture with the beverage outlet; perforation means comprising an opening element designed to open the gas-tight container in order to create the beverage outlet; the gas tight container integrally housing the beverage flow guiding means and the opening element; and a groove formed in a side of the overflow wall facing the cover that is designed to house the perforating element, and a downstream portion, at least, of the beverage flow channel extends along said groove, wherein the beverage flow channel extends along the whole length of the groove, and the first opposing end of the perforating element fans out to form a flattened zone that faces a plurality of overflow apertures.