| 摘要 |
<p>The feature of the ladder is that it comprises at least one panel (4) jointed (5) by one of its longitudinal sides to a support linked to one of the side uprights of the ladder (1), means for locking (6, 7) the panel in the folded position on the ladder and means for operating (9, 10) said locking means comprising a control (11) arranged along the lower part of the rail (2) beneath the panel (4) and actuated by the harness carriage when it passes into the part of the rail fitted with the control.</p> |
