Patent ID: 8536768

Claim:
A system for detachably connecting a first member to a second member, the first member comprising a portion that is surrounded by a portion of the second member, when the two members are connected with each other, said portions having surfaces made at least partly of heat conductive material for contacting each other in order to transfer heat between the two members, wherein the coefficient of thermal expansion of the material of the surrounded portion of the first member is larger than the coefficient of thermal expansion of the material of the surrounding portion of the second member, so that the surfaces of the first and the second members are pressed against each other when said portions are heated up, wherein said surrounded portion of the first member comprises a tapering outer surface, and in that said surrounding portion of the second member comprises a corresponding tapering inner surface, which the outer and the inner surfaces have a conical shape and contact each other when the members are connected with each other.