B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/30
B23B 51/00 (2006.01) B27G 15/00 (2006.01)
Patent
CA 2025128
A drill bit for drilling holes around the corner of a workpiece is provided witha single rounded continuous cutting edge with radiused upper and lower corners to permit free rotation of the cutting head as it is urged along an arcuate path. The bit is of a unique two piece construction permitting selective materials to be utilized in the shank on cutting head portions.
Mccord Wilfred M. Jr.
Schimke Thomas O.
Borden Ladner Gervais Llp
Vermont American Corporation
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