Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Reexamination Certificate
2008-04-01
2008-04-01
Neuder, William P (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
C175S426000
Reexamination Certificate
active
10967651
ABSTRACT:
An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.
REFERENCES:
patent: 5116568 (1992-05-01), Sung et al.
patent: 5120327 (1992-06-01), Dennis
patent: 5598621 (1997-02-01), Littecke et al.
patent: 5679496 (1997-10-01), Ohsawa et al.
patent: 5889219 (1999-03-01), Moriguchi et al.
patent: 6286498 (2001-09-01), Sung
patent: 6319460 (2001-11-01), Fang
patent: 6394202 (2002-05-01), Truax et al.
patent: 6454027 (2002-09-01), Fang et al.
patent: 2001/0047891 (2001-12-01), Truax et al.
patent: 69627053 (2000-08-01), None
patent: 10031833 (2001-01-01), None
patent: 0370199 (1990-05-01), None
patent: 0493351 (1992-08-01), None
patent: 0579376 (1994-01-01), None
patent: 1028171 (2003-03-01), None
patent: WO-02/045907 (2002-06-01), None
German Office Action dated Mar. 14, 2006 (4 pages).
English Translation of German Office Action dated Mar. 14, 2006 (2 pages).
Search and Examination Report dated Feb. 20, 2006.
German Official Action dated Apr. 28, 2007 issued in DE Application No. 048687.8 (3 pages).
English translation of German Official Action dated Apr. 28, 2007 issued in DE Application No. 048687.8 (1 page).
Combined Search and Examination Report dated Jul. 12, 2007 , issued in GB Application No. 0707821.5 (5 pages).
Conroy David A.
Griffo Anthony
Keshavan Madapusi K.
Lockwood Greg
Oldham Thomas W.
Neuder William P
Osha & Liang LLP
Smith International Inc.
LandOfFree
Impregnated diamond cutting structures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impregnated diamond cutting structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impregnated diamond cutting structures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3951101