Rotatable coupling for a plurality of conduits, particularly for a buoy

Claim 1

Rotatable coupling for a plurality of conduits for different media, particularly for a buoy or similar loading and unloading device, said coupling comprising a stationary core member, said core member being provided with a number of axial passageways connecting to conduits coupled to the core member and said passageways at various levels connecting to circular spaces via crossbores, said spaces being constituted between a number of rotatable ring members disposed in axial arrangement on top of each other and the core and being sealed with respect to the core and each one of said passageways connecting to a conduit via a radial bore, characterized in that core member, at least at the level of the rotatable ring members, comprises a pack of stacked bodies connected to each other by tension bolts or the like, each body possessing a radially projecting flange and the rotatable ring members surrounding said stacked bodies and being axially enclosed with ample play in radial direction between said flanges and being sealed in axial direction with respect to said flanges.