Fall-arrest apparatus

Details Fall-arrest apparatus Fall-arrest apparatus

A - Human Necessities

63

B

A63B 35/04 (2006.01) A62B 35/04 (2006.01)

Patent

CA 2069503

2069503 9207626 PCTABS00013 A fall-arrest apparatus comprises a drum (1) which holds a cable (3) for attachment to a load and has a brake (7-11, 13-15) which automatically stops the drum if it exceeds a certain unwinding speed. The apparatus incorporates a winch mechanism (16-20) by which the drum (1) can be manually turned either to raise or to lower a suspended load. The winch mechanism is associated with a braking means (21) comprising permanently contacting friction braking elements (22, 24, 25) and a one-way torque coupling (22, 28, 31-33). That coupling functions between those friction braking elements and the winch handle shaft (17). When the winch mechanism is set for use said one-way torque coupling prevents unwinding motion of the drum (1) otherwise than against the resistance of said permanently contacting friction braking elements.

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