An article, which is fastened by means of a gas pressure tool on a substrate

摘要

The article has a bracing unit (5) comprising an opening (10) between a support surface (4) for a fixation unit and a support surface (6) for a compressed gas tool (7). The opening opens up in a space which faces the surface (4), and at the free air that is provided when the tool is disposed against the surface (6). The opening is adapted to evacuate, out of the space, compressed gas that is ejected by the tool during driving of the fixation unit across an orifice (9).