Patent ID: 7740287

Claim:
Flexible joint for transfer of a fluid, for instance a cryogenic fluid, comprising a first element and a second element each able to be connected to respective fluid transfer elements, the first element comprising a first through going opening comprising an internal curved surface, the second element comprising a second through going opening and an outer curved surface corresponding to the internal curved surface of the first element and the first and second through going openings are in communication with each other, wherein: (a) the first element comprises a first connection part and the second element comprises a second connection part connected to the first connection part forming a sealed connection between the first connection part and the second connection part, (b) at least one of the first element or the second element comprises a flexible part, (c) at least one sealing element provided between the curved surfaces, (d) at least one sealing element provided between the first connection part and the second connection part forming the sealed connection, (e) a void between the sealed connection and the at least one sealing element provided between the curved surfaces, and (f) an inert gas, in the void, at a pressure equal to or higher than the pressure of the fluid to be transferred through the joint.