Patent ID: 8360258

Claim:
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; a stopper movably coupled to the main body and configured for upward displacement into a closed position wherein the stopper engages a portion of the main body and covers the opening to prevent fluid passage therethrough, and downward displacement into an opened position wherein the stopper is spaced apart from the portion of the main body to allow fluid passage through the opening, the stopper having a first cam follower; an actuating member movably coupled to the main body and slidably engaged with the stopper, the actuating member being movable inward and outward, and having a first cam surface, the first cam follower of the stopper being positioned to engage the first cam surface of the actuating member during inward movement of the actuating member to cause the first cam surface to move the first cam follower downward which moves the stopper to the opened position, and being positioned such that during outward movement of the actuating member the first cam surface permits the first cam follower to move upward which moves the stopper to the closed position; and a dust cover movably coupled to the upper portion of the main body and selectively rotatable between a first position wherein the dust cover is disposed over the opening of the main body, and a second position wherein the dust cover is disposed over the main body at a position away from the opening, the dust cover comprising a tongue configured to fit within a corresponding perimeter groove disposed on an outer surface of the upper portion of the main body, and an actuating member covering portion configured to block access to the actuating member and prohibit accidental activation of the actuating member when the dust cover is in the first position.