Patent ID: 9598230
Date: 2017-03-21
CPC Classifications: B65D

Claim:
1. A single cartridge containing one serving of coffee powder for preparing a coffee beverage, comprising a cartridge body and a lower filter element, the cartridge body having a cup-like shaped lower portion and a cover, the cup-like shaped lower portion having a bottom portion, an open top, a lateral wall and an upper region defined by the lateral wall, the open top being opposite the bottom portion, the cover being fixed to the open top and covering the open top, the cup-like shaped lower portion containing the coffee powder, the lower filter element being located within an interior volume of the cup-like shaped lower portion, the lower filter element having a peripheral edge portion and being located between the coffee powder and the bottom portion, the interior of the cup-like shaped lower portion being provided with an annular groove formed in the lateral wall, the annular groove being located at the inside of the cup-like shaped lower portion and providing a corresponding projection projecting outwardly, wherein the portion of the lateral wall which defines the annular groove also defines the corresponding projection projecting outwardly, the annular groove engaging the peripheral edge portion of the lower filter element and clampingly fixing the lower filter element to the cup-like shaped lower portion and preventing movement of the lower filter element towards the cover.