| 摘要 |
Articulated and compensated top mounting for a retractable staircase, made up of a vertical fixed brace 3 and of two movable arms 6 which are articulated, on the one hand, to the upper part of the vertical fixed brace, and, on the other hand, to the retractable attic staircase 17. The movable arms cover, in the lowered position, a compensation member 13, the shaft 12 of which may be moved depending on the weight of the retractable staircase. In the retracted position, the lower part 18 of the staircase 17 comes to the level of the lower part of the vertical fixed brace 3. <IMAGE> |
