Bar trimmers on disk bit

Details Bar trimmers on disk bit Bar trimmers on disk bit

2011-07-19

2011-07-19

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S378000, C175S425000

Reexamination Certificate

active

07980333

ABSTRACT:
An earth boring drill bit comprising a milled cutter having rows of hardfacing guides on the cutter. Hardfacing is applied between adjacent hardfacing guides to form a hardfacing web that serves as a cutting element. The hardfacing web defines an interface between the hardfacing web and the hardfacing guide. The hardfacing web may extend past the crest of the hardfacing guides or end along the hardfacing guides flanks. Projecting hardfacing is provided on the interface to form trimmers.

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