| 摘要 |
<p>The device of the present invention is intended to provide security for workers of any trade who operate from the inside of a building, on a wall, through a bay in said wall, while in the vicinity of empty spaces and without damaging the inner or outer existing structures (floor, wall, ceiling). According to the invention, the device includes: a rigid structure (7, 10, 12) to be placed opposite the bay; two arms (15) connected to the upper portion of the stricture (7, 10, 12) and bearing on the wall above the bay on both sides thereof; and an anchoring means 816) connected to the structure (7, 10, 12) at the upper portion thereof.</p> |
