| 摘要 |
Ladder securing device comprising a bracket and building structure engagement means. The bracket has a ladder clamping means operative to clamp the device to a stile of a ladder. The bracket has a first clamping surface operative to abut against a first side of the stile and a second, movable clamping surface operative to adjustably clamp the stile by moving the second clamping surface towards the first clamping surface so that the second clamp surface abuts a second side of the stile spaced from the first side of the stile. The building structure engagement means is adapted to engage the device with a building structure. The structure engagement means including at least one arm with an engagement surface at least a portion of which extends downwardly in a plane transverse to the longitudinal axis of the bracket to engage a surface of the structure facing in a direction opposite to the side of the structure facing the ladder. The at least one arm terminates at a point that lies in a plane parallel to, but slightly offset from, a plane in which the first clamping surface lies, so that a thin-walled_feature of the building structure can be secured between the stile and the at least one arm.
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