Nutating single cone drill bit

Details Nutating single cone drill bit Nutating single cone drill bit

2005-05-17

2005-05-17

Walker, Zakiya (Department: 3672)

Boring or penetrating the earth

Boring without earth removal

C175S343000, C175S350000

Reexamination Certificate

active

06892828

ABSTRACT:
A nutating single cone drill bit includes a bit shank defining a bit axis, a journal defining a rotation axis skewed from the bit axis, and a cutter elements mounted upon a cutter body wherein the tip of each cutter elements is forward a plane defined normal to the cutter axis at an intersection of the cutter axis with the bit axis.

REFERENCES:
patent: 4096917 (1978-06-01), Harris
patent: 4168755 (1979-09-01), Willis
patent: 4372403 (1983-02-01), Beeman
patent: 4886130 (1989-12-01), Evans

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