Abstract: A lid for controlled drinking from a drinking container includes an aperture adjacent a periphery, and a closure device formed as a single continuous piece of material. The closure device has an actuator portion, a web portion and a valve portion. The actuator portion has a distal portion extending outward of the periphery, and a proximal portion attached to a first end of the web portion. A second end of the web is attached to the valve portion. The valve portion can rotate about a pivot point and move from a closed position over the aperture when the actuator portion is in a first position, towards an open position away from the aperture when the actuator portion is moved towards a second position, during which the web winds around a suitably shaped region partially surrounding the pivot point.

Abstract: A lid for controlled drinking from a drinking container includes an aperture adjacent a periphery, and a closure device formed as a single continuous piece of material. The closure device has an actuator portion, a web portion and a valve portion. The actuator portion has a distal portion extending outward of the periphery, and a proximal portion attached to a first end of the web portion. A second end of the web is attached to the valve portion. The valve portion can rotate about a pivot point and move from a closed position over the aperture when the actuator portion is in a first position, towards an open position away from the aperture when the actuator portion is moved towards a second position, during which the web winds around a suitably shaped region partially surrounding the pivot point.

Abstract: A lid for controlled drinking from a drinking container having a mouth includes a central portion defining an edge. The lid includes a linear actuator having an outer portion extending beyond the edge and a inner portion extending within the edge. The lid further includes a gate valve having a pivot positioned proximate a center of the central portion, about which the gate valve can pivot between a closed position wherein the gate valve essentially occludes an opening defined in the central portion, and an open position wherein the gate valve does not essentially occlude the opening. The gate valve is engaged with the linear actuator and responsive to motion thereof to move the gate valve between the closed and open positions. A biasing mechanism biases the gate valve towards the closed position.