| 摘要 |
<p>A disc for electric tools for supporting abrasive material, comprising an annular portion (2) destined to retainingly receive abrasive material, a cup-shaped portion (6) which develops internally of the annular portion (2) and comprises a bottom wall (7) affording a central hole (9) for passage of a shaft of an electric tool chuck, and a lateral wall (8) connecting the bottom wall (7) and the annular portion (2). The cup-shaped portion (6) comprises a plurality of openings (10) arranged on the lateral wall (8) and a plurality of walls (11) which develop between the hole (9) and the openings to define a plurality of discharge channels (12) for the accumulated dust in the cup-shaped portion (6) during use of the disc (1).</p> |
