Patent ID: 11866249
Assignee: KONINKLIJKE DOUWE EGBERTS B.V.
Field: Handling (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 0:
1. A system for preparing a potable beverage from a capsule using a fluid supplied under pressure into the capsule comprising:
a beverage preparation device comprising an enclosing member for receiving the capsule, wherein the enclosing member comprises fluid injection means for supplying fluid under pressure into the capsule, wherein the beverage preparation device further comprises a closing member for closing the enclosing member of the beverage preparation device, wherein the enclosing member of the beverage preparation device further comprises an annular element having a central annular element axis and a free contact end, said free contact end of the annular element optionally being provided with a plurality of radially extending open grooves; and
the capsule containing a substance for the preparation of a potable beverage by at least one of extracting and dissolving the substance by means of supplying a fluid under pressure into the capsule, wherein the capsule comprises an aluminum capsule body having a central capsule body axis, said aluminum capsule body being provided with a bottom, a side wall and an outwardly extending flange, the capsule further comprising an aluminum cover attached to the outwardly extending flange, the cover hermetically closing the capsule, wherein the capsule further comprises a sealing member at the outwardly extending flange for providing a fluid sealing contact with the enclosing member of the beverage preparation device if the capsule is positioned in the enclosing member of the beverage preparation device and the enclosing member is closed by means of the closing member of the beverage preparation device such that the outwardly extending flange of the capsule and at least a portion of the sealing member of the capsule are sealingly engaged between the enclosing member and the closing member of the beverage preparation device, wherein the sealing member is integral with the outwardly extending flange and comprises an annular projection comprising a projection top projecting axially towards the capsule body bottom from an inner projection foot radially outside of an inner flange portion and an outer projection foot radially inside of an outer flange portion, and wherein the outwardly extending flange comprises an annular trough between the inner projection foot and the side wall, the annular trough having a bottom axially spaced from the outer projection foot towards the bottom of the capsule body.