07604826 is referenced by 38 patents and cites 36 patents.

The present invention relates to 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 comprises a closed chamber containing the substance with at least part of the closed chamber including a retaining part made of a flexible membrane. One or more raised elements that face the membrane are associated with and forming part of the capsule. These element(s) are used to open the capsule due to a buildup of pressure therein. This rise in pressure causes relative engagement of the raised element(s) with the membrane until the membrane ruptures or is torn to release the formed beverage from the chamber. As the liquid of the beverage does not come into contact with the machine, hygiene is improved and cross-contamination is reduced when preparing a beverage from the capsule.

Title
Closed capsule with opening means
Application Number
10/875279
Publication Number
7604826 (B2)
Application Date
June 25, 2004
Publication Date
October 20, 2009
Inventor
Alfred Yoakim
St-L├ęgier-La Chiesaz
CH
Antoine Cahen
Lausanne
CH
Jean Luc Denisart
Cully
CH
Agent
K&L Gates
Assignee
Nestec
CH
IPC
A47J 31/00
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