A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
A62B 1/14 (2006.01)
Patent
CA 2142324
2142324 9404223 PCTABScor01 A rescue system is provided which includes a hoist having a backplate (30) and a rope drum (36) mounted on said backplate, with the rope drum adapted to receive a rope (46) wound at least one and one half times about a rope engaging surface on the drum. The drum is rotatable in one direction (A) when a pulling force is exerted on a control end of the rope and blocked against rotation in an opposite direction (B) when a pulling force is exerted on a load end of the rope, so that the rope drum provides a braking force on said rope when a force is exerted on the load end of the rope. The hoist includes an arcuate rope guide (48) fixed to the backplate and extending at least 200· about the drum, and the drum itself is provided with a rope engaging surface including a cylindrical portion (42) and a tapered portion (44), with the tapered portion lying closest to said backplate. Additional system components for use in conjunction with the hoist include a centrifugal brake mechanism (110), a swivel pulley (210) and a handled acsender (310).
Mccarthy Tetrault Llp
Pickering Gregory R.
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