| 摘要 |
<p>The device has a shaped part (8) arranged between a functional column (2) and a retaining device (3). An inner side of the part has a surface adherent to the column, and an outer side of the part has a surface sliding along the device (3). The device (3) has two half shells connected with one another and has a retaining ring (11) overlapping the device (3). The ring (11) has two half rings (12, 13) connected with one another.</p> |
