摘要 |
A device to enable a person to descend from an elevated position at a con trolled and variable speed comprising a restraining member (12) having a ser ies of slots (13). A tape (11) stored in a container (20) passes through the slots (13) to a hook (10) for attachment of the device to a fixed point. A user wearing a harness (21) removably attached to the restraining member (12 ) may descend at a controlled rate determined by the frictional engagement o f the tape (11) with the surfaces of the restraining member (12). An apertur ed retarding device (50) is placed on the tape (11) within the container (20 ) to retard the passage of the tape through the restraining member (12) thus controlling the rate of descent. |