Perforated vacuum hold down surface
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United States of America Patent
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-
May 10, 2005
Grant Date -
Apr 1, 2004
app pub date -
Sep 27, 2002
filing date -
Sep 27, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A vacuum hold down table includes a surface sheet having perforations arranged so as to reduce surface cracking when the surface sheet is subject to forces during use of the table; the perforations may also be arranged to that a greater hold down force is produced in that portion of the table where the workpiece will be located, this may be accompanied by varying the hole diameter and/or hole spacing.
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