| 摘要 |
A dispensing apparatus is disclosed wherein a container has an opening therein surrounded by a rim. An actuating arm has upper and lower seals attached to one end for engaging upper and lower edges of the rim. When the lower seal engages the lower edge of the rim, a chamber is formed which fills with the liquid to be dispensed. When the actuating arms moves such that lower seal moves away from the lower edge of the rim, the substance in the chamber drains out and the upper seal engages the upper edge of the rim to prevent further dispensing of the substance.
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