Device for polishing digital storage discs
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United States of America Patent
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Jan 11, 2005
Grant Date -
Feb 5, 2004
app pub date -
Jul 21, 2003
filing date -
Aug 1, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for polishing digital storage discs including a polishing plate rotatably driven about a vertical axis, the upper side of which has a polishing cloth, wherein the polishing cloth is interrupted by a ring-shaped recess concentric with the axis of the polishing plate, at least one circular load-applying plate from the planar lower side of which a projection centrally protrudes to appropriately engage the central hole of the storage disk, a roller holder which has at least one idling roller and one driven roller against which the circumference of said load-applying plate gets into engagement when said plate is carried along while lying on said polishing plate, a drive for said driven roller, and mechanism for feeding a polishing medium to said polishing cloth.
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