Cutting elements of gage row and first inner row of a drill bit

Details Cutting elements of gage row and first inner row of a drill bit Cutting elements of gage row and first inner row of a drill bit

2005-02-01

2005-02-01

Tsay, Frank (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S331000

Reexamination Certificate

active

06848521

ABSTRACT:
The present invention generally relates to positioning and/or orienting inserts on a gage row and/or a first inner row to optimize the duty among inserts on the gage row and/or insert row of cutting a sidewall and bottom hole of a bore hole such that wear and breakage of inserts are reduced and the life of the bit is enhanced.

REFERENCES:
patent: 4802539 (1989-02-01), Hall et al.
patent: 4832139 (1989-05-01), Minikus et al.
patent: 5351768 (1994-10-01), Scott et al.
patent: 5353885 (1994-10-01), Hooper et al.
patent: 5407022 (1995-04-01), Scott et al.
patent: 5479997 (1996-01-01), Scott et al.
patent: 5833020 (1998-11-01), Portwood et al.
patent: 5915486 (1999-06-01), Portwood et al.

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