| 摘要 |
The device has two annular contact elements (2, 3) concentrically and rotatably arranged with respect to each other according to a rotation axis (R). One of the contact elements is equipped with base contact surfaces (4, 4'), and the other contact element is equipped with contact zones (5, 5') that rest against the respective base contact surfaces. The contact zones exhibit contact surfaces (51, 51') providing an offset with respect to the rotation axis. The base contact surfaces are arranged so as to present another offset similar to that of the contact surfaces of the contact zones. |
