Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuchika Nasu0
Makoto Abe0
Masaaki Jindai0
Date of Patent
June 12, 2012
0Patent Application Number
120445290
Date Filed
March 7, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An indexable insert for a drill includes a chip breaker for disposing chips, provided at an upper face thereof along a cutting edge. The chip breaker has at least one recess. The recess is retracted from an end of the chip breaker near the cutting edge toward the center of the insert by 0.2 mm or greater, or an end of the recess near a center hole of the insert communicates with the center hole.
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