Safety device

A - Human Necessities – 62 – B

Patent

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Details

A62B 35/04 (2006.01)

Patent

CA 2628669

A safety device for a fall arrest system comprises: a body, attachment means for attaching the safety device to a support structure, a drum mounted for rotation relative to the body, a safety line wound on the drum, a speed sensitive clutch connected to the drum, and a linear energy absorber connecting the body to the attachment means, in which the speed sensitive clutch is adapted to respond to rotation of the drum relative to the body in a direction tending to unwind the safety line from the drum and above a predetermined speed by locking the drum against further rotation in said direction relative to the body, and the linear energy absorber is adapted to respond, when the speed sensitive clutch has locked the drum, to an applied load along the safety line greater than a threshold value by deploying and absorbing energy so that the attachment means moves away from the body.

La présente invention vise un dispositif de sécurité pour système antichute comprenant : un corps, un moyen de fixation pour fixer le dispositif de sécurité à une structure de support, un tambour monté en vue d~une rotation par rapport au corps, une corde de sécurité enroulée sur le tambour, un embrayage sensible à la vitesse relié au tambour et un amortisseur d~énergie linéaire reliant le corps au moyen de fixation. L~embrayage sensible à la vitesse est conçu pour réagir à la rotation du tambour par rapport au corps dans une direction tendant à dérouler la corde de sécurité du tambour et, au-dessus d~une vitesse prédéterminée, en empêchant le tambour de continuer à tourner dans ladite direction par rapport au corps. L~amortisseur d~énergie linéaire est conçu pour réagir, quand l~embrayage sensible à la vitesse a bloqué le tambour, à une charge appliquée le long d~une corde de sécurité, supérieure à une valeur de seuil en déployant et en absorbant l~énergie de sorte que le moyen de fixation s~éloigne du corps.

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