| 摘要 |
<p>A suction cup dust extractor for a drill comprising: a housing (10); a drill collar (12) attached to the housing, having a drill passage (18) formed through it; a recess (38) formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; a single aperture (24) located on the housing through which air can pass; at least one first air passage (32) formed by the walls of the housing which connects between the drill and the aperture to enable air to pass from the drill passage to the aperture; and at least one second air passage (36) formed within the housing which connects between the recess and the at least one first air passage and which enables air to pass from the recess to the aperture via a part of the at least one first air passage; characterized in that there is a dividing wall (30) which forms both one of the walls of the recess and one of the walls of the first passage, the at least one second passage being an aperture formed through that wall.</p> |
