Patent ID: 7077294

Claim:
A device for stoppering a container and drawing off a fluid product contained in said container, comprising: a fixed piece ( 2 ) comprising a part ( 4 ) for fixing to the container and a pouring part ( 5 ) of general cylindrical shape, continuing said fixing part ( 4 ) towards the outside of the container, the pouring part ( 5 ) being open at two axial ends and having a lateral fluid output opening ( 20 ) and means ( 22 ) defining a passage allowing the entry of air into the device during pouring of the fluid; a movable piece ( 3 ) comprising a transverse end wall ( 28 ) from which there project in the same direction a tube ( 29 ) of general cylindrical shape, open at one free axial end and having at least one lateral fluid output opening ( 32 , 32 ′), and an external skirt ( 30 ) making possible a gripping operation of the movable piece ( 3 ) from the outside, the tube ( 29 ) being mounted with a tight fit in the pouring part ( 5 ) of the fixed piece ( 2 ) so that the movable piece ( 3 ) is: movable rotationally in the fixed piece ( 2 ); and movable in axial translation with respect to the fixed piece ( 2 ), the fixed piece ( 2 ) and the movable piece ( 3 ) comprising first means ( 11 , 34 , 36 , 37 ) designed for defining a first axial position of the movable piece ( 3 ) with respect to the fixed piece ( 2 ), referred to as a maximum pushing-in position, in which the lateral openings ( 20 , 32 , 32 ′) in the two pieces ( 2 , 3 ) are offset axially to prevent them from being brought into coincidence, and second means ( 17 , 18 , 33 ) designed for defining a second axial position of the movable piece ( 3 ) with respect to the fixed piece ( 2 ), referred to as the extraction position, in which the lateral openings ( 20 , 32 , 32 ′) in the two pieces ( 2 , 3 ) can be brought into coincidence by rotation of the movable piece ( 3 ); wherein the movable piece ( 3 ) also comprises an internal skirt ( 31 ) projecting from the transverse wall ( 28 ) in the same direction as the tube ( 29 ), between said tube ( 29 ) and the external skirt ( 30 ), said internal skirt ( 31 ) having an axial length such that, when the movable piece ( 3 ) is in an extraction position, the free end of the internal skirt ( 31 ) is situated facing the pouring part ( 5 ) of the fixed piece ( 2 ), so that, during pouring of the fluid, the fluid contained in the container cannot escape through the passage and in this way allow the entry of air, but is channeled, in the annular space contained between the tube ( 29 ) and the internal skirt ( 31 ), towards the fluid output opening ( 20 ) in the fixed piece ( 2 ).