Patent ID: 7316337

Claim:
A molten metal discharging device between a first upper container ( 1 ) and a second container placed below the first container wherein said first container comprises a ring shaped blade ( 15 ), fixed to the base of the first container around a molten metal discharging aperture ( 20 ), a nozzle ( 19 ), inserted into said aperture with the lower end protruding from it and in which said second container ( 2 ) comprises an outlet sleeve ( 5 ) the upper end of which is suitable for being coupled with said lower end of the nozzle ( 19 ), elastic means ( 9 , 10 , 11 , 12 ) adapted to push said outlet sleeve upwards, a cylindrical sheath ( 3 ) surrounding said outlet sleeve ( 5 ) and said elastic means, gas sealing means ( 17 ) between said sheath ( 3 ) and said ring shaped blade ( 15 ), wherein the cylindrical sheath ( 3 ) is integral with the second container ( 2 ) and said elastic means ( 9 , 10 , 11 , 12 ) are adapted to react against the second container ( 2 ) so as to push upwards the outlet sleeve ( 5 ).