| 摘要 |
<p>A substantially closed nursing mug having an upper discharge nippel (31) and a vertically extending dosing chamber (18) adjacent to a side wall portion (3a) of the mug, the volume of the dosing chamber corresponding to a predetermined liquid volume to be drunk at a time. Upper and lower valves (11, 12) are disposed at the upper and lower ends, respectively, of the dosing chamber (18). The upper valve (11) is adapted to automatically switch from a closing position to an opening position when the mug is tilted past the first tilting angle, and the lower valve (12) is adapted to automatically switch from an opening position to a closing position when the mug is tilted past a second tilting angle being less than or substantially equal to the first tilting angle.</p> |
