Roller cone drill bit legs

Details Roller cone drill bit legs Roller cone drill bit legs

2005-10-18

2005-10-18

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S425000, C427S282000

Reexamination Certificate

active

06955233

ABSTRACT:
A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.

REFERENCES:
patent: 4694918 (1987-09-01), Hall
patent: 4867015 (1989-09-01), Kane et al.
patent: 5663512 (1997-09-01), Schader et al.
patent: 6374704 (2002-04-01), Scott et al.

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