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Class Information
Number: 76/108.2
Name: Metal tools and implements, making > Blank or process > Drill > Rock drill
Description: Invention comprising stock material for, or a method of, making a drill capable of cutting stone.










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

Patent Number Title Of Patent Date Issued
8601908 Method and apparatus for a true geometry, durable rotating drill bit Dec. 10, 2013
8534384 Drill bits with cutters to cut high side of wellbores Sep. 17, 2013
8522646 Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole Sep. 3, 2013
8439137 Superabrasive compact including at least one braze layer thereon, in-process drill bit assembly including same, and method of manufacture May. 14, 2013
8353974 Superabrasive elements, methods of manufacturing, and drill bits including same Jan. 15, 2013
8355815 Methods, systems, and devices for manipulating cutting elements for earth-boring drill bits and tools Jan. 15, 2013
8347990 Matrix bit bodies with multiple matrix materials Jan. 8, 2013
8333814 Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same Dec. 18, 2012
8307739 Methods for forming earth-boring tools having pockets for receiving cutting elements Nov. 13, 2012
8309018 Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies Nov. 13, 2012
8272295 Displacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits Sep. 25, 2012
8240403 Earth-boring tools with improved retention of cutting elements installed within pockets Aug. 14, 2012
8230952 Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools Jul. 31, 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
8202335 Superabrasive elements, methods of manufacturing, and drill bits including same Jun. 19, 2012
8191445 Methods of forming fiber-containing diamond-impregnated cutting tools Jun. 5, 2012
8191658 Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same Jun. 5, 2012
8195438 Method for designing cutting structure for roller cone drill bits Jun. 5, 2012
8176812 Methods of forming bodies of earth-boring tools May. 15, 2012
8118116 Elongated percussive rock drilling element, a method for production thereof and a use thereof Feb. 21, 2012
8109177 Bit body formed of multiple matrix materials and method for making the same Feb. 7, 2012
8091452 Method for manufacturing drill head Jan. 10, 2012
8087324 Cast cones and other components for earth-boring tools and related methods Jan. 3, 2012
8079429 Methods of forming earth-boring tools using geometric compensation and tools formed by such methods Dec. 20, 2011
8079427 Methods of forming earth-boring tools having features for affecting cuttings flow Dec. 20, 2011
8074869 System, method, and apparatus for reactive foil brazing of cutter components for fixed cutter bit Dec. 13, 2011
8065935 Method of manufacturing a rotary drill bit Nov. 29, 2011
8020471 Method for manufacturing a drill bit Sep. 20, 2011
7954401 Method of assembling a drill bit with a jack element Jun. 7, 2011
7905161 Process of drill bit manufacture Mar. 15, 2011
7878275 Matrix bit bodies with multiple matrix materials Feb. 1, 2011
7841259 Methods of forming bit bodies Nov. 30, 2010
7836792 System, method and apparatus for enhanced cutting element retention and support in a rock bit Nov. 23, 2010
7828089 Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same Nov. 9, 2010
7802495 Methods of forming earth-boring rotary drill bits Sep. 28, 2010
7798256 Fixed cutter drill bit for abrasive applications Sep. 21, 2010
7784381 Matrix drill bits and method of manufacture Aug. 31, 2010
7779937 Steel tooth bit with scooped teeth profile Aug. 24, 2010
7753144 Drill bit with a retained jack element Jul. 13, 2010
7730976 Impregnated rotary drag bit and related methods Jun. 8, 2010
7721824 Multiple inserts of different geometry in a single row of a bit May. 25, 2010
7703354 Method of forming a nozzle retention body Apr. 27, 2010
7694608 Method of manufacturing a matrix body drill bit Apr. 13, 2010
7625521 Bonding of cutters in drill bits Dec. 1, 2009
7617747 Methods of manufacturing rotary drag bits including a central region having a plurality of cutting structures Nov. 17, 2009
7588102 High impact resistant tool Sep. 15, 2009
7571779 Drill rod and method of manufacture thereof Aug. 11, 2009
7549912 Method of finishing cutting elements Jun. 23, 2009
7543661 Roller cone bits with wear and fracture resistant surface Jun. 9, 2009
7506705 Method of producing downhole drill bits with integral carbide studs Mar. 24, 2009

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