Patent ID: 8292103

Claim:
A container closure ( 1 ), comprising a flange ( 2 ) having an inlet opening ( 2 p ) and an outlet tube ( 2 a ) having a first thread ( 2 b ) disposed after the inlet opening ( 2 p ) in outflow direction and further comprising a rotary closure ( 3 ) with an outlet opening ( 3 p ) and with a second thread ( 3 i ), wherein the first and second threads ( 2 b , 3 i ) engage with one another, have a pitch, and are configured such that the rotary closure ( 3 ) is rotatable with respect to the flange ( 2 ) about an axis of rotation (D) and is further displaceably mounted in the direction of the rotary axis (D), wherein the flange ( 2 ) includes a sealing lip ( 2 i ) projecting towards the axis of rotation (D) which forms the inlet opening ( 2 p ) extending concentric to the axis of rotation (D), wherein the rotary closure ( 3 ) has a spigot ( 3 a ) disposed concentric to the axis of rotation (D) which is arranged in the outflow direction after the inlet opening ( 2 p ) and wherein the spigot ( 3 a ) and the sealing lip ( 2 i ) are configured to allow displacement of the spigot ( 3 a ) in the direction of the axis of rotation (D) to so allow the spigot to adopt at least two positions, a closed position (SS) in which the spigot ( 3 a ) contacts the sealing lip ( 2 i ) so that the inlet opening ( 2 p ) is closed, and an open position (OS), in which the spigot ( 3 a ) is spaced from the sealing lip ( 2 i ) so that the inlet opening ( 2 p ) is opened, and wherein the rotary closure ( 3 ) has an elastic portion that is positioned between the spigot ( 3 a ) and the thread ( 3 i ) so that the spigot ( 3 a ) is displaceably or resiliently mounted in the direction of the axis of rotation (D) relative to the thread ( 3 i ), and wherein the container closure is further configured to automatically open upon a predetermined excessive pressure to thereby relieve the excessive pressure.