Layered hardfacing, durable hardfacing for drill bits

Details Layered hardfacing, durable hardfacing for drill bits Layered hardfacing, durable hardfacing for drill bits

2005-02-18

2008-05-20

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S375000

Reexamination Certificate

active

07373997

ABSTRACT:
A drill bit having a bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade, at least one cutter disposed in the at least one cutter pocket, hardfacing applied to at least a selected portion of the drill bit is shown and described. The hardfacing includes a first hardfacing layer disposed on the selected portion of the drill bit, a second hardfacing layer disposed on the first hardfacing layer, wherein the first hardfacing layer has a hardness different than a hardness of the second hardfacing layer.

REFERENCES:
patent: 2906612 (1959-09-01), Anthony et al.
patent: 3334975 (1967-08-01), Quaas et al.
patent: 4156329 (1979-05-01), Daniels et al.
patent: 4521664 (1985-06-01), Miller
patent: 4556607 (1985-12-01), Sastri
patent: 4610320 (1986-09-01), Beakley
patent: 4726432 (1988-02-01), Scott et al.
patent: 4734339 (1988-03-01), Schachner et al.
patent: 4776863 (1988-10-01), van den Berg et al.
patent: 4836307 (1989-06-01), Keshavan et al.
patent: 4842937 (1989-06-01), Meyer et al.
patent: 4884477 (1989-12-01), Smith et al.
patent: 4984940 (1991-01-01), Bryant et al.
patent: 5135061 (1992-08-01), Newton, Jr.
patent: 5145739 (1992-09-01), Sarin
patent: 5161335 (1992-11-01), Tank
patent: 5236116 (1993-08-01), Solanki et al.
patent: 5352269 (1994-10-01), McCandlish et al.
patent: 5445231 (1995-08-01), Scott et al.
patent: 5492186 (1996-02-01), Overstreet et al.
patent: 5518766 (1996-05-01), Bigelow et al.
patent: 5535838 (1996-07-01), Keshavan et al.
patent: 5605198 (1997-02-01), Tibbitts et al.
patent: 5679445 (1997-10-01), Massa et al.
patent: 5755299 (1998-05-01), Langford, Jr. et al.
patent: 5791422 (1998-08-01), Liang et al.
patent: 5791423 (1998-08-01), Overstreet et al.
patent: 5921330 (1999-07-01), Sue et al.
patent: 6039131 (2000-03-01), Beaton
patent: 6360832 (2002-03-01), Overstreet et al.
patent: 6439327 (2002-08-01), Griffin et al.
patent: 6533831 (2003-03-01), Zimmer
patent: 6601475 (2003-08-01), Davies et al.
patent: 6615936 (2003-09-01), Mourik et al.
patent: 6651756 (2003-11-01), Costo, Jr. et al.
patent: 6659206 (2003-12-01), Liang et al.
patent: 6695080 (2004-02-01), Presley et al.
patent: 6772849 (2004-08-01), Oldham et al.
patent: 2001/0003884 (2001-06-01), Wei et al.
patent: 2001/0008190 (2001-07-01), Scott et al.
patent: 2003/0079565 (2003-05-01), Liang et al.
patent: 0 857 552 (1998-08-01), None

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