| 摘要 |
The at least one screw bolt (4,5) has several recesses (12) distributed axially behind each other over its length and into which a locking element (13) mounted on the jaws (1,2) can fit. The locking element is disengaged from the spring action contrary to the tensioning direction (20) of the screw bolt. The locking element is positioned on a holder (14) mounted inside a blind hole (15) which has a cylindrical inner wall. |
