Tool

Details Tool Tool

B - Operations, Transporting

23

B

255/56

B23B 51/00 (2006.01) B23B 31/00 (2006.01) B25D 17/08 (2006.01)

Patent

CA 1263107

ABSTRACT OF THE DISCLOSURE A drill bit is disclosed which has a generally cylindrical shank for insertion in a tool receiver or holder of a rotary percussive machine such as a drilling machine (not shown). The shank has curved surface portions and flat surface portions of rectangular configuration, the flat surface portions lying between the ends of the shank and on opposite sides thereof. When the shank is inserted in a tool receiver of a rotary percussive machine (not shown), driving elements thereof engage and act on the flat surfaces to provide driving torque to the drill bit, which is thereby rotated.

497029

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