Roller cone bits with reduced packing

Details Roller cone bits with reduced packing Roller cone bits with reduced packing

2006-05-16

2006-05-16

Bagnell, David (Department: 3672)

Boring or penetrating the earth

With mechanical cleaner for bit or cutter element

C175S371000, C384S092000

Reexamination Certificate

active

07044242

ABSTRACT:
A roller-cone drill bit in which a large groove is machined into the backface of each cone, near the crack where the cone meets the arm assembly. By making the outer lip of this crack more exposed to the open volume of turbulent flow, turbulence near the crack is increased, deposit of sediments near the crack is reduced, and infiltration of sediments through the crack is also reduced.

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Hughes Christensen, Ultra Max High Performance Bits For Motor and High Speed Applications, 1998, p. 3.

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