Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2006-08-08
2006-08-08
Gay, Jennifer H. (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S398000, C175S428000
Reexamination Certificate
active
07086489
ABSTRACT:
Disclosed are cutter elements for a drill bits having particular, but not exclusive, application on the nose portion of the cone cutters of a rolling cone bit. The cutter elements include a base, a cutting portion, and a plurality of cutting lobes extending radially from the cutting portion. Each lobe includes a forward-facing cutting face and trailing portion having a trailing surface that intersects the cutting face in a nonlinear cutting edge. The trailing surface is non-planar and recedes away from the cutting edge. In certain embodiments, the trailing surface is a partial dome shaped surface. The trailing portion provides strength and buttresses the cutting edge.
REFERENCES:
patent: 2578593 (1951-12-01), Phipps
patent: 3388757 (1968-06-01), Fittinger
patent: 3442352 (1969-05-01), McElya et al.
patent: 3946820 (1976-03-01), Knapp
patent: 4056153 (1977-11-01), Miglierini
patent: 4058177 (1977-11-01), Langford, Jr. et al.
patent: 4086973 (1978-05-01), Keller et al.
patent: 4108260 (1978-08-01), Bozarth
patent: 4334586 (1982-06-01), Schumacher
patent: 4352400 (1982-10-01), Grappendorf et al.
patent: 4511006 (1985-04-01), Grainger
patent: 4586574 (1986-05-01), Grappendorf
patent: 4716977 (1988-01-01), Huffstutler
patent: 4722405 (1988-02-01), Langford, Jr.
patent: 4832139 (1989-05-01), Minikus et al.
patent: 4951762 (1990-08-01), Lundell
patent: D324527 (1992-03-01), Slutz
patent: 5131478 (1992-07-01), Brett et al.
patent: 5172777 (1992-12-01), Siracki et al.
patent: 5172779 (1992-12-01), Siracki et al.
patent: 5197555 (1993-03-01), Estes
patent: 5201376 (1993-04-01), Williams
patent: 5303787 (1994-04-01), Brady
patent: 5322138 (1994-06-01), Siracki
patent: 5323865 (1994-06-01), Isbell et al.
patent: 5341890 (1994-08-01), Cawthorne et al.
patent: 5351768 (1994-10-01), Scott et al.
patent: 5372210 (1994-12-01), Harrell
patent: 5407022 (1995-04-01), Scott et al.
patent: 5415244 (1995-05-01), Portwood
patent: 5421423 (1995-06-01), Huffstutler
patent: 5421424 (1995-06-01), Portwood et al.
patent: 5429199 (1995-07-01), Sheirer et al.
patent: 5429200 (1995-07-01), Blackman et al.
patent: 5452771 (1995-09-01), Blackman et al.
patent: 5479997 (1996-01-01), Scott et al.
patent: 5518077 (1996-05-01), Blackman et al.
patent: 5535839 (1996-07-01), Brady
patent: 5542485 (1996-08-01), Pessier et al.
patent: 5560440 (1996-10-01), Tibbits
patent: 5592995 (1997-01-01), Scott et al.
patent: 5636700 (1997-06-01), Shamburger, Jr.
patent: 5644956 (1997-07-01), Blackman et al.
patent: 5695019 (1997-12-01), Shamburger, Jr.
patent: 5697462 (1997-12-01), Grimes et al.
patent: 5709278 (1998-01-01), Crawford
patent: 5746280 (1998-05-01), Scott et al.
patent: 5752573 (1998-05-01), Scott et al.
patent: 5755301 (1998-05-01), Love et al.
patent: 5813485 (1998-09-01), Portwood
patent: 5819861 (1998-10-01), Scott et al.
patent: 5833020 (1998-11-01), Portwood et al.
patent: 5839526 (1998-11-01), Cisneros et al.
patent: 5871060 (1999-02-01), Jensen et al.
patent: 5874060 (1999-02-01), Armour et al.
patent: 5881828 (1999-03-01), Fischer et al.
patent: 5887655 (1999-03-01), Haugen et al.
patent: 5887668 (1999-03-01), Haugen et al.
patent: 5890550 (1999-04-01), Swadi et al.
patent: 5915486 (1999-06-01), Portwood et al.
patent: 5950745 (1999-09-01), Ingmarsson
patent: 5967245 (1999-10-01), Garcia et al.
patent: 6029759 (2000-02-01), Sue et al.
patent: 6053263 (2000-04-01), Meiners
patent: 6059054 (2000-05-01), Portwood et al.
patent: 6105693 (2000-08-01), Ingmarsson
patent: D430578 (2000-09-01), Brady
patent: 6119798 (2000-09-01), Fischer et al.
patent: 6176332 (2001-01-01), Massa et al.
patent: 6176333 (2001-01-01), Doster
patent: 6196340 (2001-03-01), Jensen et al.
patent: 6202752 (2001-03-01), Kuck et al.
patent: 6241034 (2001-06-01), Steinke et al.
patent: 6595305 (2003-07-01), Dunn et al.
patent: 6601662 (2003-08-01), Matthias et al.
patent: 6883623 (2005-04-01), McCormick et al.
patent: 6883624 (2005-04-01), McDonough
patent: 2002/0108789 (2002-08-01), Schautt
patent: 2004/0149493 (2004-08-01), McDonough
patent: 2004/0163851 (2004-08-01), McDonough et al.
patent: 2004/0173384 (2004-09-01), Yong et al.
patent: 0 391 683 (1990-10-01), None
patent: 0 446 765 (1991-09-01), None
patent: 0 527 506 (1993-02-01), None
patent: 0 902 159 (1999-03-01), None
patent: 2 361 497 (2001-10-01), None
patent: 2 369 841 (2002-06-01), None
patent: 2 393 982 (2004-04-01), None
patent: 2105124 (1998-02-01), None
patent: 2153569 (2000-07-01), None
Search Report for Appln. No. GB0402108.5 dated Jul. 27, 2005, (1 p.).
Search Report for Appln. No. GB0403620.8 dated May 5, 2004, (2 p.).
Search Report for Appln. No. GB0402108.5 dated Apr. 22, 2004, (1 p.).
Conley & Rose, P.C.
Gay Jennifer H.
Smith International Inc.
LandOfFree
Multi-lobed cutter element for drill bit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-lobed cutter element for drill bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-lobed cutter element for drill bit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3693278