Patent ID: 6056086
Filing Date: 2000-05-02
Classification: A62B

Abstract:
An automatic anti-fall device able to slide, without requiring any additional operation, onto a safety support fixed to a point situated above the anti-fall device, said anti-fall device for connection to a user or a load and comprising:(a) a cam pivotally mounted within a box of the anti-fall device said box having a passage for receiving the safety support, said cam positionable in a non-tightening position against the safety support when a relative movement between the anti-fall device and the safety support is under a threshold value of acceleration or speed, and said cam being able to pivot in one direction of rotation to tighten against the safety support;(b) a detecting roller mounted to rotate on said cam so as to cooperate with said safety support, when said cam is in its non-tightening position, with a rotating speed proportional to the speed of relative movement between the anti-fall device and the safety support; and(c) a friction system comprising a movable friction piece mounted on said cam and a spring applying said movable friction piece against the periphery of said detecting roller, so as to apply to said detecting roller a resistant torque opposing the rotation of the detecting roller and, when said threshold value is reached, rendering said detecting roller and said cam integral so as to rotate said cam in its tightening position.