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Class Information
Number: 175/374
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Specific or diverse material
Description: Apparatus in which the bit or any portion thereof is composed of (1) two or more different materials, (2) a single material which has been treated to provide portions of the bit with specific properties which properties are different from the properties of another portion or (3) a specific material.










Sub-classes under this class:

Class Number Class Name Patents
175/375 Welded 57


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8662207 Rotary drag bits including abrasive-impregnated cutting structures Mar. 4, 2014
8631864 Durability of downhole tools Jan. 21, 2014
8622154 Diamond bonded construction with thermally stable region Jan. 7, 2014
8607899 Rock bit and cutter teeth geometries Dec. 17, 2013
8561731 Hardmetal for use in oil and gas drilling applications Oct. 22, 2013
8535408 High thermal conductivity hardfacing Sep. 17, 2013
8534393 Diamond enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements Sep. 17, 2013
8534390 Wear resistant material for the shirttail outer surface of a rotary cone drill bit Sep. 17, 2013
8528667 Wear resistant material at the leading edge of the leg for a rotary cone drill bit Sep. 10, 2013
8522899 Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit Sep. 3, 2013
8505655 Superabrasive inserts including an arcuate peripheral surface Aug. 13, 2013
8499860 Cutting elements having cutting edges with continuous varying radii and bits incorporating the same Aug. 6, 2013
8501144 Polycrystalline diamond apparatuses and methods of manufacture Aug. 6, 2013
8459380 Earth-boring bits and other parts including cemented carbide Jun. 11, 2013
8403080 Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components Mar. 26, 2013
8365844 Diamond bonded construction with thermally stable region Feb. 5, 2013
8347990 Matrix bit bodies with multiple matrix materials Jan. 8, 2013
8342268 Tough carbide bodies using encapsulated carbides Jan. 1, 2013
8322465 Earth-boring bit parts including hybrid cemented carbides and methods of making the same Dec. 4, 2012
8322466 Drill bits and other downhole tools with hardfacing having tungsten carbide pellets and other hard materials and methods of making thereof Dec. 4, 2012
8323372 Low coefficient of thermal expansion cermet compositions Dec. 4, 2012
8317893 Downhole tool parts and compositions thereof Nov. 27, 2012
8312943 Thermally-stable polycrystalline diamond compact and applications therefor such as drill bits Nov. 20, 2012
8309050 Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance Nov. 13, 2012
8292006 Diamond-enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements Oct. 23, 2012
8281881 Rolling cone drill bit having cutting elements with improved orientations Oct. 9, 2012
8272459 Superabrasive inserts including an arcuate peripheral surface Sep. 25, 2012
8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures Sep. 18, 2012
8261858 Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof Sep. 11, 2012
8230762 Methods of forming earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials Jul. 31, 2012
8225886 Earth-boring bits and other parts including cemented carbide Jul. 24, 2012
8211203 Matrix powder for matrix body fixed cutter bits Jul. 3, 2012
8205692 Rock bit and inserts with a chisel crest having a broadened region Jun. 26, 2012
8191654 Methods of drilling using differing types of cutting elements Jun. 5, 2012
8182778 Boron carbide and method for making same May. 22, 2012
8087324 Cast cones and other components for earth-boring tools and related methods Jan. 3, 2012
8083012 Diamond bonded construction with thermally stable region Dec. 27, 2011
8079429 Methods of forming earth-boring tools using geometric compensation and tools formed by such methods Dec. 20, 2011
8079428 Hardfacing materials including PCD particles, welding rods and earth-boring tools including such materials, and methods of forming and using same Dec. 20, 2011
8074748 Thermally-stable polycrystalline diamond element and compact, and applications therefor such as drill bits Dec. 13, 2011
8074750 Earth-boring tools comprising silicon carbide composite materials, and methods of forming same Dec. 13, 2011
8069935 Superabrasive element, and superabrasive compact and drill bit including same Dec. 6, 2011
8069936 Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits Dec. 6, 2011
8056650 Thermally stable ultra-hard material compact construction Nov. 15, 2011
8028771 Polycrystalline diamond constructions having improved thermal stability Oct. 4, 2011
8025112 Earth-boring bits and other parts including cemented carbide Sep. 27, 2011
8016056 Asymmetric graded composites for improved drill bits Sep. 13, 2011
8002052 Particle-matrix composite drill bits with hardfacing Aug. 23, 2011
8002053 System, method, and apparatus for predicting tracking by roller cone bits and anti-tracking cutting element spacing Aug. 23, 2011
7997358 Bonding of cutters in diamond drill bits Aug. 16, 2011

1 2 3 4 5 6 7 8










 
 
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