End-rounding devices and methods for end-rounding
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United States of America Patent
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Dec 23, 2003
Grant Date -
Nov 28, 2002
app pub date -
May 23, 2001
filing date -
May 23, 2001
priority date (Note) -
Expired
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Abstract
Methods and devices are provided for end rounding filaments for use on brushes. The devices include an air driven planetary gear system rotating a sanding wheel through a varied elliptical path that attacks the filaments from all sides.
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