Patent ID: 6890006

Claim:
A device for axially maintaining a cylindrical element, the device comprising: a coupling bushing comprising external threads, first nut strips which extend axially beyond the external threads, and a first internal pressure surface; a covering nut comprising a second internal pressure surface configured to engage and deform ends of the first nut strips radially inwardly and towards the cylindrical element when the cylindrical element is introduced into the coupling bushing and the covering nut; and a sleeve comprising second nut strips and an external diameter which is at most equal to an internal diameter of the coupling bushing, whereby the sleeve, with the second nut strips being introduced first, is adapted to be introduced into the coupling bushing, wherein the first internal pressure surface is configured to engage and deform ends of the second nut strips radially inwardly and towards the cylindrical element when the cylindrical element is introduced into the coupling bushing and the covering nut.