| 摘要 |
<p>An infant cup includes a cup body 12 , a cover 16 , a flexible mouthpiece 24 and a valve element 26 . The valve element 26 includes a sealing face 70 which closes an orifice 44 in the mouthpiece in a relaxed position. The valve element includes an angled face cooperating with an internal angled face of the mouthpiece such that when pressure is applied the valve element moves downwardly, opening the mouthpiece orifice 44 . The valve element is resiliently biased upwards such that when relaxed it springs back to close the mouthpiece orifice 44 once again, and is biased upwards in the closed position.</p> |
