| 摘要 |
A safety system for blind installers comprising: a tubular first main upright (10); a tubular first telescopic upright (11) insertable into and slidable within said first main upright; means for locking (12,13) said first telescopic upright to said first main upright; said first main upright comprising at one end a first bearing plate (15)abutting against a slab of the operating floor (5); said first telescopic upright having at one end a second bearing plate (26) abutting against a slab of the upper floor (26); a tubular second main upright (30); a tubular second telescopic upright (31) insertable into and slidable within said second main upright; means for locking (14) said second telescopic upright to said second main upright; said second main upright having at one end a third bearing plate (15) abutting against the slab of the operating floor; said second telescopic upright having at one end a fourth bearing plate abutting against the slab of the upper floor (6); said system has a net (36) fixed to said first main upright, to said first telescopic upright, to said second main upright, and to said second telescopic upright. |
