| 摘要 |
<p>The length-adjustable support (1) has an outer supporting element (2) and an internal supporting element (3), where the internal supporting element is adjustably arranged in the outer supporting element. The support has a gear-tooth profile (6), which is arranged at inner side (19) of the internal supporting element, and a gear wheel (5), which is decisively arranged in the gear-tooth profile.</p> |
