发明名称 SANDING DISC FOR SMOOTHING DRYWALLS
摘要 A sanding disc (10) particularly useful for smoothing drywall. The sanding disc includes a circular abrasive disc (18) having an abrasive surface (19), and a circular foam disc (12) smaller in diameter than the abrasive disc whi ch is co-axially adhered to the surface (20) of the abrasive disc opposite its abrasive surface. The abrasive disc has a circular central portion (32) alon g which the surface defined by the abrasive is generally planar, and has an annular peripheral portion (34) extending from its central portion to its peripheral surface (21) along which its surface defined by the abrasive is generally cylindrically convex to position the peripheral surface of the abrasive disc in a plane passing through the foam disc (12).
申请公布号 CA2441930(A1) 申请公布日期 2002.09.26
申请号 CA20022441930 申请日期 2002.01.23
申请人 3M INNOVATIVE PROPERTIES COMPANY 发明人 FITZEL, GALEN A.;RICH, LARRY D.
分类号 B24D7/00;B24D3/00;B24D9/08;B24D13/14;(IPC1-7):B24D13/14 主分类号 B24D7/00
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