| 摘要 |
A device for decreasing heat transfer and slosh from a beverage container, such as a drinking cup, glass, mug or the like, that has an open end from which a beverage may be drunk, comprises a cover for the open end of the container, formed with an opening substantially smaller than the open end of the container and shaped and sized to be received by the mouth of the beverage drinker. The cover is equipped with a rim structure for securing it to the open end of the container and further has a web recessed from the rim. A portion of the perimeter of the drinking opening is adjacent the rim and the remainder of the perimeter is at the same level as the rim. A transition section joins the remainder of the drinking opening perimeter and web in a smoothly sloping manner. Accordingly, the cover decreases heat transfer from the contents of the container. The smoothly sloping transition section from the recessed web to the perimeter of the drinking opening insures that the contents of the container do not slosh toward the drinker when used.
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