Low projection inserts for rock bits

Details Low projection inserts for rock bits Low projection inserts for rock bits

2005-08-15

2009-10-13

Gay, Jennifer H (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S431000

Reexamination Certificate

active

07600590

ABSTRACT:
An earth boring bit has an outer row of inserts located within extra deep holes. Each of the holes has a cylindrical sidewall with a depth greater than the length of the barrel of the insert mounted within. The difference in depth is at least equal to a distorted entry zone in the hole. A portion of the sidewall that includes the entry zone surrounds the cutting end, reducing the projection of the cutting end from the land.

REFERENCES:
patent: 2774570 (1956-12-01), Cunningham
patent: 2774571 (1956-12-01), Morlan
patent: 3127067 (1964-03-01), Hall et al.
patent: 3495668 (1970-02-01), Schumacher
patent: 3952815 (1976-04-01), Dysart
patent: 4940099 (1990-07-01), Deane et al.
patent: 5351768 (1994-10-01), Scott et al.
patent: 5351770 (1994-10-01), Cawthorne et al.
patent: 5655612 (1997-08-01), Grimes et al.
patent: 5881829 (1999-03-01), Dimond et al.
patent: 6116359 (2000-09-01), Prejean
patent: 6561292 (2003-05-01), Portwood
patent: 7096981 (2006-08-01), Van Klompenburg et al.
patent: 2004/0084222 (2004-05-01), Klompenburg et al.
patent: 2004/0173384 (2004-09-01), Yong et al.
patent: 2005/0257963 (2005-11-01), Tucker et al.
patent: 2006/0260846 (2006-11-01), Portwood et al.
patent: 2324554 (1998-10-01), None
patent: 2368601 (2002-05-01), None
Hughes Christensen, “Drill Bit Catalog”, 2004, 56 pages.

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