Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
RH Smith, JH Stevens, JL Duggan, NJ Lyons… - US Patent …, 2010 - Google Patents
Methods of forming bit bodies for earth-boring bits include assembling green components,
brown components, or fully sintered components, and sintering the assembled compo nents …
brown components, or fully sintered components, and sintering the assembled compo nents …
Methods of forming earth-boring rotary drill bits
JA Oxford, JW Eason, RH Smith, JH Stevens… - US Patent …, 2010 - Google Patents
Methods of forming earth-boring rotary drill bits include providing a bit body, providing a
shank that is configured for attachment to a drill String, and attaching the shank to the bit …
shank that is configured for attachment to a drill String, and attaching the shank to the bit …
Cemented carbide inserts for earth-boring bits
PK Mirchandani, AJ Mosco - US Patent 7,513,320, 2009 - Google Patents
This invention relates to cutting inserts for earth boring bits comprising a cutting zone,
wherein the cutting zone comprises first cemented hard particles and a body zone, wherein …
wherein the cutting zone comprises first cemented hard particles and a body zone, wherein …
Earth-boring bits
PK Mirchandani, JW Eason, JJ Oakes… - US Patent …, 2011 - Google Patents
The present invention relates to compositions and methods for forming a bit body for an
earth-boring bit. The bit body may comprise hard particles, wherein the hard particles …
earth-boring bit. The bit body may comprise hard particles, wherein the hard particles …
Composite cutting inserts and methods of making the same
XD Fang, DJ Wills, PK Mirchandani - US Patent 7,687,156, 2010 - Google Patents
Embodiments of the present invention include methods of producing a composite article. A
method comprises introducing a first powdered metal grade from a feed shoe into a first …
method comprises introducing a first powdered metal grade from a feed shoe into a first …
Earth-boring bits
P Mirchandani, J Eason, J Oakes… - US Patent App. 10 …, 2005 - Google Patents
The present invention relates to compositions and methods for forming a bit body for an
earth-boring bit. The bit body may comprise hard particles, wherein the hard particles …
earth-boring bit. The bit body may comprise hard particles, wherein the hard particles …
Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such …
H Choe, JH Stevens, JC Westhoff, JW Eason… - US Patent …, 2011 - Google Patents
US7913779B2 - Earth-boring rotary drill bits including bit bodies having boron carbide
particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such …
particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such …
Cemented carbide—metallic alloy composites
PK Mirchandani, ME Chandler, EW Olsen - US Patent 8,221,517, 2012 - Google Patents
US PATENT DOCUMENTS 1,509,438 A 9, 1924 Miller 1,530,293 A 3, 1925 Breitenstein
1,808,138 A 6/1931 Hogg et al. 1,811,802 A 6, 1931 Newman 1912, 298 A 5, 1933 Newman …
1,808,138 A 6/1931 Hogg et al. 1,811,802 A 6, 1931 Newman 1912, 298 A 5, 1933 Newman …
Articles having improved resistance to thermal cracking
PK Mirchandani, AJ Mosco, EW Olsen… - US Patent …, 2011 - Google Patents
An article includes a working portion including cemented carbide, and a heat sink portion in
thermal communication with the working portion. The heat sink portion includes a heat sink …
thermal communication with the working portion. The heat sink portion includes a heat sink …
Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
H Choe, JH Stevens, JL Overstreet, JC Westhoff… - US Patent …, 2010 - Google Patents
US PATENT DOCUMENTS 5,677,042 A 10, 1997 Massa et al. 5,679,445. A 10/1997 Massa
et al. 2,819,958 A 1, 1958 Abkowitz et al. 5,697.046 A 12/1997 Conley 2,819,959 A 1, 1958 …
et al. 2,819,958 A 1, 1958 Abkowitz et al. 5,697.046 A 12/1997 Conley 2,819,959 A 1, 1958 …