| 摘要 |
The capsule (1) comprises a cup-shaped body (2) defined by a bottom wall (4) and by a side wall (3), a lid (5) arranged so as to close body (2) and an annular shoulder (8) defined on the inner face of wall (3) and on which the peripheral edge of lid (5) is fixed. Side wall (3) of body (2) has an upper annular edge (12) defined by: - an annular portion (13) extending upwards in one piece with side wall (3); an annular portion (14) extending from portion (13) on a horizontal plane; an annular portion (15) extending from portion (14) on a horizontal plane; an annular projection (16) extending downwards from the lower face of portion (14) for defining, together with the outer face of portion (13), an annular seat (17) suited to be engaged by the upper end of a side wall (23) of a percolation chamber; and a ring (18) connecting portions (14) and (15) and which, in section, is arched and has a concavity facing downwards. |
