05656311 is referenced by 70 patents and cites 18 patents.

A cartridge which contains a substance for preparation of a beverage has a cover membrane member which covers an opening of a container body for containing the substance within the container interior. The body has a base and a sidewall which extends from the base to define a container interior, and the sidewall defines the opening at a position opposing the base. The membrane is affixed to a rim which extends from the sidewall in a direction away from the sidewall. An interior container surface of either the base or the cover membrane member contains a plurality of perforations which define openings which provide localized absence of a plurality of portions in the base or cover membrane member to provide a plurality of localized portions of reduced thickness so that when a fluid pressure for extraction of the substance for preparation of a beverage is applied, the localized portions of reduced thickness tear and open for beverage passage.

Title
Cartridges having interiorly positioned zones of reduced thickness
Application Number
899342
Publication Number
5656311
Application Date
April 25, 1995
Publication Date
August 12, 1997
Inventor
Olivier Fond
Yverdon
CH
Agent
Vogt & O Donnell
Assignee
Nestec
CH
IPC
B65D 81/34
B65D 85/00
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