Closed cartridge for preparing a beverage for extraction under pressure
US7153530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2003 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Dec 27, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D85/8046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a closed cartridge (10), for extraction under pressure, comprising a dish (12) with a bottom (13 ) with a central part and a peripheral part and a side wall having substantially the shape of a frustum of a cone and a circular edge with a diameter greater at the bottom and a cover (15) welded to the periphery of the edge of the dish and the cover is intended to be torn only through the effect of the force of the extraction fluid when extraction starts, the cartridge comprising, in the dish at the level of the bottom, a fabric (16) guaranteeing retention of the solid substance when it is opened,in which the fabric guaranteeing retention of solid substance is a sheet of fabric sealed in the bottom of the dish in two zones, on the one hand in the central part (17) and on the other hand in the peripheral part (18) of the bottom (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.