| 摘要 |
Device for receiving residues, applicable to drill holes and the like, comprising a circular body (2) made preferably of flexible, transparent or semi-transparent material which presents on one of its faces a perforation (4) through which is introduced a bit (6) fixed to an electric or conventional drilling tool, and whose opposite tip emerges up to the drilling point to a front perforation (3) of a diameter substantially larger than the diameter of the perforation (4), the perforation (4) remaining concentric to the perforation (3) as to its location. In a second embodiment, a device is provided with a flange (14) inside which is provided a concave space (5) acting as a suction cup so as to fix the device appropriately to the wall without any auxiliary aid, and an annular metal reinforcement (13) being provided in the perforation (12). |
