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Class Information
Number: 175/378
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Irregular tooth cutter row
Description: Apparatus in which the rolling cutter element has (1) a row of circumferential cutting edges of nonuniform size, shape, or pitch or other cutting edge arrangements (e.g., spacing) which are adapted to prevent repeated engagement or "tracking" of the cutting edges with the same point on the earth formation or (2) a plurality of circumferential rows of cutting edges and in which there is an abrupt change in shape or pitch between adjacent rows.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8689908 Drill bit having enhanced stabilization features and method of use thereof Apr. 8, 2014
8579051 Anti-tracking spear points for earth-boring drill bits Nov. 12, 2013
8544568 Shoulder durability enhancement for a PDC drill bit using secondary and tertiary cutting elements Oct. 1, 2013
8281881 Rolling cone drill bit having cutting elements with improved orientations Oct. 9, 2012
8195438 Method for designing cutting structure for roller cone drill bits Jun. 5, 2012
8146688 Drill bit with prefabricated cuttings splitter and method of making Apr. 3, 2012
8033341 Lawn perforating tool and method of using same Oct. 11, 2011
8002053 System, method, and apparatus for predicting tracking by roller cone bits and anti-tracking cutting element spacing Aug. 23, 2011
7980333 Bar trimmers on disk bit Jul. 19, 2011
7950476 Drill bit and cutter element having chisel crest with protruding pilot portion May. 31, 2011
7878274 Steel tooth disk with hardfacing Feb. 1, 2011
7798255 Drill bits having optimized cutting element counts for reduced tracking and/or increased drilling performance Sep. 21, 2010
7699126 Cutting element having asymmetrical crest for roller cone drill bit Apr. 20, 2010
7686104 Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions Mar. 30, 2010
7631709 Drill bit and cutter element having chisel crest with protruding pilot portion Dec. 15, 2009
7621345 High density row on roller cone bit Nov. 24, 2009
7549490 Arrangement of roller cone inserts Jun. 23, 2009
7497281 Roller cone drill bits with enhanced cutting elements and cutting structures Mar. 3, 2009
7377332 Multiple inserts of different geometry in a single row of a bit May. 27, 2008
7370711 Rolling cone drill bit having non-circumferentially arranged cutter elements May. 13, 2008
7318492 Rotary drill bit Jan. 15, 2008
7234549 Methods for evaluating cutting arrangements for drill bits and their application to roller cone drill bit designs Jun. 26, 2007
7195078 Multiple inserts of different geometry in a single row of a bit Mar. 27, 2007
7096981 Alternating inclinations of compacts for drill bit Aug. 29, 2006
7066288 Asymmetric compact for drill bit Jun. 27, 2006
7040424 Drill bit and cutter having insert clusters and method of manufacture May. 9, 2006
6986395 Force-balanced roller-cone bits, systems, drilling methods, and design methods Jan. 17, 2006
6942045 Drilling with mixed tooth types Sep. 13, 2005
6857488 Boring head cutter Feb. 22, 2005
6834733 Spiral wave bladed drag bit Dec. 28, 2004
6827161 Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance Dec. 7, 2004
6766870 Mechanically shaped hardfacing cutting/wear structures Jul. 27, 2004
6725952 Bowed crests for milled tooth bits Apr. 27, 2004
6651758 Rolling cone bit with elements fanned along the gage curve Nov. 25, 2003
6612384 Cutting structure for roller cone drill bits Sep. 2, 2003
6601661 Secondary cutting structure Aug. 5, 2003
6595304 Roller bit parallel inlayed compacts Jul. 22, 2003
6484824 Failure indicator for rolling cutter drill bit Nov. 26, 2002
6450269 Method and bit for directional horizontal boring Sep. 17, 2002
6443246 Long barrel inserts for earth-boring bit Sep. 3, 2002
6415687 Rotary cone drill bit with machined cutting structure and method Jul. 9, 2002
6401839 Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation Jun. 11, 2002
6213225 Force-balanced roller-cone bits, systems, drilling methods, and design methods Apr. 10, 2001
6206116 Rotary cone drill bit with machined cutting structure Mar. 27, 2001
6095262 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation Aug. 1, 2000
6062325 Rotary drill bits May. 16, 2000
5979575 Hybrid rock bit Nov. 9, 1999
5967245 Rolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting duty Oct. 19, 1999
5904212 Gauge face inlay for bit hardfacing May. 18, 1999
5881829 Rolling-cutter mining bit with relatively soft formation cutting structure Mar. 16, 1999

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