| 摘要 |
<p>A flow control structure for a non-spill beverage container that includes a tube-like spout defining a flow channel, and a substantially flat membrane supported by the spout over one end of the flow channel, and an annular baffle mounted in the flow channel. The membrane punctured to form multiple, substantially round pinholes arranged in a two-dimensional pattern that remain closed to prevent fluid and air flow under normal atmospheric conditions, and open and to facilitate fluid flow rate through the membrane under an applied pressure differential (e.g., when sucked on by a child). The annular baffle defines an opening that limits differential pressures applied to the membrane when not in use, thereby acting in combination with the membrane to prevent leaks. The baffle opening is also sized such that, during normal use (e.g., sucked on by a child), substantial flow is generated through the membrane.</p> |
