Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Reexamination Certificate
2006-05-09
2006-05-09
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
C175S378000, C175S426000, C175S432000
Reexamination Certificate
active
07040424
ABSTRACT:
Disclosed is a rolling cone cutter and drill bit employing multiple inserts retained as a cluster in an aperture in the cone cutter. Apertures in which the insert clusters are retained are multilobed apertures formed by intersecting bores formed in the cone steel. The apertures may also be created by forming spaced apart bores and milling regions of the cone steel that extends between the bores. The inserts in a cluster may be retained within the aperture to differing depths, may extend above the cone steel to differing extension lengths, and may have cutting portions having a variety of shapes. The inserts in a cluster may be made of different materials in order to optimize cutting duty. The bores forming the multilobed aperture may be parallel or skewed, and may create an aperture having a multilevel bottom surface so as to permit the insertion of an insert having a relatively large cutting surface in instances when the cone design would not otherwise permit the use of a cylindrical insert of the desired diameter.
REFERENCES:
patent: 3442352 (1969-05-01), McElya et al.
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: 4271917 (1981-06-01), Sahley
patent: 4334586 (1982-06-01), Schumacher
patent: 4716977 (1988-01-01), Huffstutler
patent: 4722405 (1988-02-01), Langford, Jr.
patent: 4811801 (1989-03-01), Salesky et al.
patent: 4832139 (1989-05-01), Minikus et al.
patent: 4854405 (1989-08-01), Stroud
patent: 4951762 (1990-08-01), Lundell
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: 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: 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: 5533582 (1996-07-01), Tibbitts
patent: 5542485 (1996-08-01), Pessier et al.
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: 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: 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: 6161634 (2000-12-01), Minikus et al.
patent: 6202752 (2001-03-01), Kuck et al.
patent: 6241034 (2001-06-01), Steinke et al.
patent: 6427791 (2002-08-01), Glowka et al.
patent: 6530441 (2003-03-01), Singh et al.
patent: 6745645 (2004-06-01), Griffo
patent: 0 527 506 (1993-02-01), None
patent: 2398330 (2004-08-01), None
patent: WO 01/61142 (2001-08-01), None
Search Report for Appln. No. GB0404709.8, dated Mar. 25, 2004; (1 p.).
Search Report for Appln. No. GB0404709.8, dated Sep. 23, 2004; (1 p.).
Buford Ernest L.
Davies Peter M.
Penka, Jr. Hubert W.
Yong Zhou
Bagnell David
Collins G M
Conley & Rose, P.C.
Smith International Inc.
LandOfFree
Drill bit and cutter having insert clusters and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drill bit and cutter having insert clusters and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill bit and cutter having insert clusters and method of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3612064