Backing plate and disc configured for blowing angled grinding
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United States of America Patent
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-
Jul 6, 2004
Grant Date -
N/A
app pub date -
Nov 30, 2002
filing date -
Dec 1, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combination abrasive disc and backing plate provide workpiece viewing and blowing collectively through aligned viewing apertures. The backing plate has a bottom surface adapted to support the abrasive disc and an opposed top surface. Coordinated alignment of the viewing apertures of the disc and plate allows observation of a workpiece collectively through the disc and plate during rotary drive thereof. The plate's viewing aperture is partially adjoined by a scoop formation on the plate's top surface. The scoop is arranged for deflecting air from above the plate's top surface and consequently forcing such in a current collectively through the aligned viewing apertures of the disc and plate. This blowing current acts to both blow away debris from the field of view and thereby reduce viewing impairment, as well as to provide some cooling to the workpiece.
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