Patent ID: 8464632

Claim:
A cartridge, particularly for espresso coffee machines, for extracting a beverage from a particulate substance contained therein by means of water under pressure, the cartridge comprising: a main body comprising a cup portion and a lid portion, the cup portion comprising a base, a sidewall and a rim opposed to said base, the lid portion being fixedly attached to said rim of the cup portion so as to define an internal volume of said cartridge, the internal volume of said cartridge housing the particulate substance comprised within filtering means for retaining said particulate substance and for percolating fluid substances therethrough, said lid portion comprising a normally closed lid port defining a first passage for percolation fluid substances when it is opened, further comprising a tappet arranged inside said internal volume so as to pierce said base when a pressure is applied externally to said base towards said internal volume, thus opening a normally closed cup port of said base.