主权项 |
1. A lid for use with a drinking vessel containing a liquid, comprising:
a main body selectively couplable to the drinking vessel, the main body including an upper portion having an opening configured to permit fluid passage therethrough when the lid is coupled to the drinking vessel and a main body sidewall extending downward and defining a hollow interior body region below the upper portion of the main body; a stopper positioned at least partially within the hollow interior body region, the stopper having a stopper sealing portion, a fluid flow barrier portion spanning across the hollow interior body region and a perimeter sidewall along an outer perimeter of the barrier portion, the perimeter sidewall being located adjacent to the main body sidewall, the stopper being configured for upward displacement into a closed position whereat the stopper sealing portion sealingly engages the upper portion of the main body at the opening to prevent fluid passage therethrough, and downward displacement into an opened position whereat the stopper sealing portion is spaced apart from the opening to allow fluid passage through the opening, the perimeter sidewall being spaced inward of the main body sidewall to form a perimeter fluid flow pathway located between the perimeter sidewall and the main body sidewall, the perimeter fluid flow being maintained when the stopper is in the closed position, the perimeter sidewall being positioned at least partially within the hollow interior body region and spaced apart from the main body sidewall along at least a portion of the perimeter sidewall during the entire travel of the stopper between the opened position and the closed position, the stopper having an engagement portion comprising one of a cam and a cam follower; and an actuating member movably coupled to the main body, the actuating member being inwardly movable and having an engagement portion comprising the other of the cam and the cam follower, the engagement portion of the actuating member arranged to engage the engagement member of the stopper and apply a downwardly directed operating force to the engagement portion of the stopper during inward movement of the actuating member to cause the engagement portion of the actuating member to move the engagement portion of the stopper downward and thereby move the stopper to the opened position. |