Patent ID: 7753225

Claim:
A drinking mouthpiece for liquid container, including a valve assembly arranged on a lid including an opening for the passage of liquid, wherein the drinking mouthpiece is substantially elastic and the valve assembly includes a flexible membrane having at least one valve opening and a substantially rigid membrane supporting element having at least one valve opening, wherein the membrane supporting element is supported by a web connected with a fastening ring for securing the membrane supporting element to the lid, wherein the fastening ring is spaced apart from the membrane supporting element in a longitudinal direction of the drinking mouthpiece wherein, with the valve assembly being in a closed position, the membrane rests on the membrane supporting element and the valve opening of the membrane is sealingly covered by the membrane supporting element and the valve opening of the membrane supporting element is sealingly covered by the membrane, the membrane being inwardly curved in said closed position, wherein during the external application of pressure to the drinking mouthpiece and/or the application of an underpressure at the membrane side facing away from the membrane supporting element, the membrane is in a resnapped, outwardly curved open position in which the valve openings of the membrane and membrane supporting element, respectively, are released.