| 摘要 |
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. |
