| 摘要 |
<p>The ladder securing mechanism has a bearing shank (2), a hook-shaped holding shank for attachment of a roof ladder, and a movable securing device for a fastening rope etc. as in 2827219. The movable securing device (7) is fitted to the roof hook (1) below the hook-shaped holding shank (6). It pref. comprises two movably interconnected parts (8, 9) one firmly attached to the roof hook and the other serving for fastening rope attachment. Thus safety is enhanced, with no danger that the stressed rope will prevent holding shank from bending for the ladder mounting.</p> |
