| 摘要 |
Collapsible stairway having, in the position of use, vertical suspension ropes, lines (3) or similar, and whereby the stairway in the position of use mainly having a vertical axis, and whereby the stairway forms a kind of winding stairway. The stairway comprises step units (1) having bending stiffness, with a plurality of interconnected steps in each unit, and plate shaped, mutually similar, horizontal stair heads (2) to which the ropes, lines (3) or similar are fastened constitute connection between successive step units and are in hinge connection therewith, whereby the stair heads (2) and the step units (1) in the collapsed condition of the stairway will be lying mutually overlapping and approximately against each other in at least two separate vertical stacks for the stair heads (2) and the step units (1), respectively. |
