Method of and apparatus for sandblasting workpiece
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United States of America Patent
Stats
-
Jan 17, 1989
Grant Date -
N/A
app pub date -
Sep 1, 1987
filing date -
Sep 1, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There are provided a sandblasting apparatus and a method for processing a workpiece which has a first surface to be processed adjacent to a second surface not to be processed. The apparatus includes a masking device for masking the second surface and an abrasive blowing device for causing abrasive grains to impinge against the workpiece to process the first surface. The masking device includes a masking tape, an intermittent tape traveling device for causing the masking tape to travel to index a portion of the masking tape in the vicinity of the workpiece intermittently, and an urging device for bringing the portion of the masking tape into contact with the second surface of the workpiece to cover the same.
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