| 摘要 |
A lifting column, in particular for height-adjustable tables, and comprising at least three mutually longitudinally slidable sections (1-3) with an electrically driven device to produce the extension. A locking element, e.g. a ball 12, movable transversely to the longitudinal direction of the column is mounted in a first slidable section (2), which locking element is in engagement with an adjacent second slidable section (3) such that these two sections (2, 3) are locked together at least in one direction of movement. When, in this direction of movement, the first section (2) reaches an end position, the locking element (12) is released, whereby the other section (3) is released so that this can continue in the direction of movement. Hereby, a desired sequential extension of the sections may be achieved.
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