Patent ID: 7407198

Claim:
A radial rotary transfer assembly comprising: at least one stationary part ( 1 ); at least one rotor ( 4 ) comprising at least two sealing surfaces ( 16 , 18 ) having normals (n 16 , n 18 ); two sliding rings ( 2 , 3 ) with overall at least two sealing surfaces ( 15 , 17 ) having normals (n 15 , n 17 ) arranged between the stationary part and the rotor, wherein the sealing surfaces ( 15 , 17 ) of the sliding rings ( 2 , 3 ) co-operate with the rotor sealing surfaces ( 16 , 18 ) defining sliding ring seals; at least one radial through-flow duct ( 10 ) between the pairs ( 15 , 16 ; 17 , 18 ) of co-operating sealing surfaces, characterised in that the normals (n 16 , n 18 ) to the sealing surfaces of the rotor ( 4 ) face axially away from each other and the normals (n 15 , n 17 ) to the sealing surfaces of the sliding rings ( 2 , 3 ) are directed axially towards each other, wherein the sliding ring seals are hydrostatically compensated within a range of from about 90% to about 100%; and wherein the stationary part ( 1 ) is of the cross-section of a U-shaped profile and forms an annularly peripherally extending clamp, wherein the limbs of the U-shaped profile axially embrace from the outside the sliding rings ( 2 , 3 ) and the rotor ( 4 ).