| 摘要 |
<p>A stopper consists of a lid (1) with a central, stationary guiding pin (4) designed at the bottom as a disk valve (5). A sliding sleeve (2) coaxial to the guiding pin (4) is axially movable and designed at its free end as a mouthpiece (3). The sliding sleeve (2) forms with the guiding pin (4) a ring-shaped outlet channel (7) for the bottle or can content. In the sliding sleeve (2) is located a sealing member which co-operates with the disk valve (5) as a valve seat (14). Outside of the sliding sleeve (2) is arranged a separate, pressure-compensating air flow path (6, 9), in which are arranged additional valve means (8) that may be actuated by the sliding sleeve (2).</p> |
