Patent ID: 7795764

Claim:
A machine having a rotor with a rotation axis, the rotor comprising: an uncooled rotor body having recesses or flats disposed on an outside surface of the rotor body, at least one rotor winding arranged in a cross-sectional surface area of the recesses or flats and housed in a cryostat having a cryostat wall, with the at least one rotor winding being cooled to cryogenic temperature, and a holding or support device transmitting a force acting on the rotor winding via the cryostat wall to the rotor body, wherein the holding or support device comprises at least one support element transmitting heat in a direction from the rotor body to the rotor winding, wherein at least one support element comprises means for reducing thermal conductivity between the rotor body and the rotor winding, said means filling at least a part of a cross-sectional surface oriented perpendicular to the heat transmission direction.