| 摘要 |
Emergency device consisting of a fixed support (1) and of a ladder or staircase plane (2) connected to said fixed support (1) by an articulated arm (3) at one end to the fixed support (1) and at the opposite end to the ladder or staircase plane (2), a second longer arm (4) being articulated to the fixed support (1) and to the plane (2) so as to form a deformable quadrilateral which may be unfolded by a dampened motion so that the bearing-forming second arm (4) is substantially horizontal. Thereby, said emergency device, essentially intended to be used as an emergency staircase in case of fire, enables the users to take shelter from flames or fumes coming out through the windows of buildings. |
