Drill having plate-like cutter member fixed at proximal end to shank and having cutting edge at distal portion
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
May 5, 1997
filing date -
May 8, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill including a cutter member and a shank which are formed separately from each other and fixed to each other for rotation as a unit, wherein the shank has an engaging groove formed in a distal end face thereof such that the engaging groove extends in an axial direction of the shank and is aligned with a center of the distal end face, and the cutter member consists of a rectangular plate including a proximal end portion fixed to the shank by engagement thereof with the engaging groove, and a distal end portion which is remote from the shank and which has at least one cutting edge.
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