Mud debris diverter for earth-boring bit

Details Mud debris diverter for earth-boring bit Mud debris diverter for earth-boring bit

2006-06-27

2006-06-27

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

Reexamination Certificate

active

07066287

ABSTRACT:
A rolling cone earth boring bit has a diverter located between the bit leg and the back face of the cone to divert debris from the seal gland area. The diverter has a base that inserts into a hole in a last machined surface of the bit. The diverter has a head that is wedge-shaped and protrudes from the hole into a clearance between the back face and the last machined surface. The head has an inner side that is spaced from an annular wall of the back face by a small uniform clearance. The head has an outer side that is oblique to the annular wall of the back face region to divert debris from the clearance.

REFERENCES:
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patent: 2960313 (1960-11-01), Goodwin
patent: 3013621 (1961-12-01), Kinnear
patent: 4223749 (1980-09-01), Bodine et al.
patent: 4515228 (1985-05-01), Dolezal et al.
patent: 5056610 (1991-10-01), Oliver et al.
patent: 5358061 (1994-10-01), Nguyen
patent: 5644956 (1997-07-01), Blackman et al.
patent: 5740871 (1998-04-01), Williams
patent: 6533051 (2003-03-01), Singh et al.

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