Grinding disc structure
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United States of America Patent
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N/A
Issued Date -
Dec 23, 2010
app pub date -
Feb 12, 2008
filing date -
Feb 12, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An improved grinding disc structure includes a support disc having first through holes and second through holes; a main disc body, with a distal surface connected onto the support disc, and having dust exhaust holes, a longitudinal guiding portion at the center, and a longitudinal guiding portion with outwardly extended transverse guiding portions and each dust exhaust hole corresponding to each first through hole, and each transverse guiding portion corresponding to each second through hole, and each transverse guiding portion being not interconnected with each dust exhaust hole; a grinding layer, disposed on another distal surface of the main disc body, and having through holes corresponding to each dust exhaust hole and the longitudinal guiding portion, such that each dust exhaust hole and the longitudinal guiding portion achieve the dust collection effect for the external portion and center of the grinding disc.
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