Patent attributes
A beverage container cap is revealed. The beverage container cap includes a cap body movably disposed on top of a beverage container, a waterproof gasket fixed on bottom of a valve seat with a chamber, and a pivot valve mounted in the chamber of the valve seat. A liquid through hole and at least one vent are arranged at the waterproof gasket. When a hemispherical pivot part of the pivot valve is pivotally rotated within the chamber of the valve seat to make the beverage container cap in a closed or open state, at least one lug on the hemispherical pivot part is pressed against or away from the vent of the waterproof gasket. Thereby pressure in the beverage container is equal to the pressure of the atmosphere outside while beverage in the container flows out. Thus users can drink the beverage from the container smoothly.
