Reinforced rotary drill bit

Details Reinforced rotary drill bit Reinforced rotary drill bit

E - Fixed Constructions

21

B

255/69

E21B 10/46 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1314866

REINFORCED ROTAY DRILL BIT Abstract A rotary drill bit for boring earth formations is provided which includes a main body portion of a hard metal matrix material and at least one protrusion or shoulder formed of the same matrix material. On the protrustion is mounted a cutting element. Means for reinforcing the protrusion are provided and extend between the main body portion of the bit and the protrusion. The reinforcements add impact strength to the bit and increase the resistance of the bit to cracking in areas supporting the cutting element.

589326

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