| 摘要 |
The new design of the leveling element consists of base (1) with an upper (5) and a lower part (4) and a leveling bolt (2). The threaded part (22) of the leveling bolt (2) is screwed through a thread (10) in the upper part (5) of the base (1) in order to rest in an open space (14) in the lower part (4) with sufficient play to allow the upper area (21) of the bolt (2) to swing to all sides. The thread (10) at the upper part (5) of the base (1) prevents the bolt (2) to be removed accidentally by pulling. |
