Mud diverter for earth-boring bit

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

2007-12-11

2007-12-11

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

Reexamination Certificate

active

11060331

ABSTRACT:
A rolling cone earth boring bit has a diverter and an arcuate segment located between the bit leg and the back face of the cone to divert debris from the seal gland area. The diverter has an oblong or oval base that inserts into a mating 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. The segment is spaced from the diverter and is concentric to an axis of the bearing pin.

REFERENCES:
patent: 2260487 (1941-10-01), Scott
patent: 2769616 (1956-11-01), Morlan et al.
patent: 2960313 (1960-11-01), Goodwin
patent: 4395076 (1983-07-01), Sabre
patent: 4515228 (1985-05-01), Dolezal et al.
patent: 4688651 (1987-08-01), Dysart
patent: 5056610 (1991-10-01), Oliver et al.
patent: 6264367 (2001-07-01), Slaughter et al.

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