Polishing disk for a tool for the fine machining of optically active surfaces on spectacle lenses in particular
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United States of America Patent
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Oct 9, 2007
Grant Date -
Sep 7, 2006
app pub date -
Mar 3, 2006
filing date -
Mar 4, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A polishing disk for a tool for the fine machining of optically active surfaces on spectacle lenses in particular is disclosed, which comprises a support body, to which a foam layer is attached, wherein a polishing film bears against the foam layer. The polishing film is provided with at least one opening in a central region. During machining, the opening ensures pressure equalization and makes liquid polishing agent available from inside the foam layer, as a result of which better rinsing and cooling of otherwise disadvantaged regions of the polishing disk is achieved. As a result, a polishing disk of simple and cost-effective design is proposed, which is much more durable than the prior art while achieving high surface qualities.
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