| 摘要 |
The present invention relates to devices for safely lowering an individual, independent of the weight of the individual, during a fire from the higher floor levels of a tall structure to the ground level at a predetermined speed For this, the present invention provides a device (1) for safely evacuating a: individual (41) during an emergency from a tall structure comprising a rotatable drum (2), a cable (3) of suitable length wound about said drum and rotation regulating means (7) for controlling the rotation speed of said drum comprising a first member encasing an expandible second member rotatable in said first member (8), wherein the expansion of said second member (9) is controlled by the rotation speed of said drum.
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