Fall-arresting mechanism

A - Human Necessities – 62 – B

Patent

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Details

A62B 35/00 (2006.01)

Patent

CA 2582181

For a generally vertical or curved structure, such as a ladder, tower, wall, or pole, which is equipped with a generally vertical or curved rail, a fall- arresting mechanism comprises an upper plate and a lower plate. Each plate has an aperture, through which the generally vertical rail extends. The mechanism further comprises an elongate, linking member, such as a strap, which is connected to one of the upper and lower plates. The upper and lower plates are linked, by a parallelogram linkage on each of two sides, so that the upper plate is pressed against the rail, in a given direction, while the lower plate is pressed against the rail, in an opposite direction, when the elongate, linking member is pulled downwardly or downwardly and away from the rail. The upper and lower plates are biased in the indicated directions. The mechanism further comprises a friction-enhancing wheel, which is biased against the rail.

Pour une structure généralement verticale ou incurvée, comme une échelle, un pylône, un mur ou un poteau, équipés d'un profilé généralement vertical ou incurvé, un mécanisme antichute comprend une plaque supérieure et une plaque inférieure. Chaque plaque a une ouverture, à travers laquelle s'étend le profilé généralement vertical. Le mécanisme comprend de plus un élément allongé de liaison, comme une courroie, raccordée à l'une des plaques supérieure ou inférieure. Ces plaques sont reliées, par une tringlerie en parallélogramme sur chacun des deux côtés. Ainsi, la plaque supérieure est pressée contre le profilé, dans une direction donnée, tandis que la plaque inférieure est pressée contre le profilé, en direction opposée, lorsque l'élément allongé de liaison est poussé vers le bas, ou vers le bas et éloigné du profilé. Les plaques supérieure et inférieure sont décalées dans les directions indiquées. Le mécanisme comprend de plus une roue à friction améliorée, décalée contre le profilé.

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