| 摘要 |
A portable descent apparatus 1 for use in effecting the controlled descent of a body from an elevated location, for example a multi-storey building, comprises in combination a support frame 2 having a substantially planar base 3 and upright supporting end brackets 4,5, a fixed shaft 6 extending between said end brackets, a rotatable drum 7 coaxially mounted on said shaft and having means for attachment of one end of a flexible cable 17 thereto, the drum 7 having fixed to one end thereof a manually or remotely controllable calliper-operated disc brake assembly and to the other end thereof a gear driven descent speed controller comprising a toothed annular member 13 meshing with a pinion 19 driving a centrifugal brake assembly 12, the flexible cable 17 having one end attached to said drum and the other end 16 thereof having anchoring means for attaching the cable to a fixed position 18, and a first handle means 15 attached to the support frame 2 adjacent to said disc brake assembly and provided with means 11 for manually or remotely controlling the braking effect of the disc brake assembly, and a second handle means 14 attached to the support frame 2 adjacent to said descent speed controller, the arrangement being such that in use the apparatus may be held using the two handle means 14,15 with the planar base 3 positioned against the descending body.
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