| 摘要 |
A nursing bottle assembly including a composite bottle shell including an outer main body, a collapsible milk bag to be placed therein, a nipple provided with a special nonreturn outlet and an inner bottom member adapted to be moved slidably upward or downward by being telescopically guided by the main body. After the nipple and the milk bag containing milk are secured by a fastening ring to the mouth of the body with the opening end of the bag folded over the mouth, the bottom member is moved upward to force out the air in the bag and fill the interior of the specially constructed nipple with the milk. Due to the provision of the particular nonreturn structure of the milk outlet, inflow of air is prevented to keep the milk retained in the nipple all the time for smooth sucking action.
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