Drill bit

Details Drill bit Drill bit

E - Fixed Constructions

21

B

255/74

E21B 49/02 (2006.01) E21B 10/10 (2006.01) E21B 10/16 (2006.01) E21B 10/36 (2006.01) E21B 10/52 (2006.01) E21B 17/07 (2006.01)

Patent

CA 1261316

ABSTRACT OF THE DISCLOSURE: A drill bit for use with a reciprocating device, wherein the bit is in the form of a rotatable corrugated frusto-conical roller, supported by a U-shaped member, attached to a mounting post. The corrugations are the cutting edges of the bit.

529096

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