| 摘要 |
Break-fall device of a type used in conjunction with a lifeline and carabiner hook or similar manner of attachment to a harness, having at least one floating cam and one fixed cam, both enclosed in an external metallic shell, to define a path for the lifeline which can be blocked by the floating cam in case of a fall. The device includes manual controlled rotation of the floating cam around its pivot in the direction opposite to that locking the lifeline.
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