Patent ID: 6139677
Filing Date: 2000-10-31
Classification: B24B

Abstract:
A polishing apparatus for polishing a surface of a workpiece, said apparatus comprising:a turnable having a polishing surface;a top ring for supporting the workpiece to be polished and pressing the workpiece against said polishing surface;a dressing tool for dressing said polishing surface on said turnable;a cover which covers an upper surface of said turnable for preventing liquid on said turnable from being scattered, said cover being made of synthetic resin and having an upper wall and a side wall;a workpiece transferring device disposed adjacent to said turntable and outside of said cover for transferring the workpiece between said top ring and said workpiece transferring device; andinserting holes formed in said upper wall of said cover for inserting the entire said top ring and the entire said dressing tool therethrough.