Patent ID: 7604826
Filing Date: 2009-10-20
Classification: A47J,B65D

Abstract:
1. A capsule containing a substance for the preparation of a beverage that is designed to be extracted by injection of a fluid under pressure, the capsule comprising a single, unitary device including several elements comprising: a chamber containing the substance, the chamber being closed prior to an injection of the fluid into the chamber, wherein the substance is in contact with at least a portion of an outer periphery of the capsule prior to the injection of the fluid into the chamber; a first puncturable wall of the chamber for allowing the fluid to be injected into the chamber, wherein the first puncturable wall comprises at least a portion of the outer periphery of the capsule and wherein the first puncturable wall is welded to a remaining portion of the outer periphery of the capsule; a second puncturable wall forming a retaining wall for the substance; and an opening device comprising at least one puncturing element, wherein the opening device is contained within the outer periphery of the capsule, wherein the retaining wall is made of a flexible membrane and the at least one puncturing element is configured to face the flexible membrane, and wherein opening of the capsule is achieved by a relative engagement of the at least one puncturing element with the retaining wall, with the relative engagement being performed under an effect of a rise in pressure of the fluid in the chamber.