| 摘要 |
<p>A valved dispensing spout which can be easily assembled and non-removably attached to the neck of a bottle. It includes a double-headed shiftable valve element (15, 18, 20, 21), a threaded overcap (9) and a sleeve (4) for locking the spout to the bottle neck. Teeth (7) at the top of the sleeve (4) fit into recesses (8) at the bottom of the overcap (9) and will break when the overcap (9) is unthreaded for the first time. </p> |
