| 摘要 |
<p>A piercing device (1a, 1b, 1c, 1d, 10a, 10b, 10c, 10d), particularly for capsules for preparing beverages and the like, comprising a plate (2, 11) that can be associated with a capsule (100) for infusions and the like and at least one penetrator (3, 12) that protrudes substantially at right angles from the plate (2, 11) toward the capsule (100) and is provided with at least one external cutting edge (4, 13) for the penetration of at least part of the penetrator (3, 12) into the capsule (100) as a consequence of the mutual approach of the plate (2, 11) and the capsule (100); a passage duct (5, 14) is defined in the penetrator (3, 12) that terminates, at its ends, in a passage hole (6, 15) provided on the face (7, 16) of the plate (2, 11) that lies opposite the face provided with the penetrator (3, 12), and at least one aperture (8, 18) provided in the part of the penetrator (3, 12) that can penetrate into the capsule (100) for the passage of fluid from the face (7, 16) to the capsule (100) or vice versa, the external cutting edge (4, 13) extending laterally to the penetrator (3, 12) along a helical profile.</p> |
