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Class Information
Number: 175/331
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element
Description: Apparatus comprising a rotary bit in which a cutter element or carrier for a fixed cutter is rotatably mounted thereon so that the cutter element or carrier may roll or tend to roll on a surface of the bore as the bit is rotated.










Sub-classes under this class:

Class Number Class Name Patents
175/342 Adjustable cutter element 10
175/354 Axle rotatable with cutter 29
175/334 Bit with leading cutter forming smaller diameter initial bore 32
175/355 Circumferentially displaced cutter axes 14
175/332 Core forming-type bit 12
175/360 Cross axle with stub axle 1
175/361 Cross axle 11
175/367 Detachable stub axle, bushing or bearing 17
175/373 Disk cutter 35
175/378 Irregular tooth cutter row 71
175/350 Laterally offset cutter axis 9
175/348 Longitudinal axis cutter 13
175/344 Noncutting portion forwardly of rolling cutter (e.g., reamer) 54
175/376 Nonsymmetrical bit (e.g., nontracking) 89
175/365 Outwardly directed stub axle 21
175/341 Plural rolling cutters with intermeshing teeth 44
175/336 Rolling cutter bit with fixed cutter 55
175/366 Separable support for stub axle 18
175/374 Specific or diverse material 375
175/377 Spiral rib or tooth row 20
175/369 Stub axle cutter securing means 31
175/371 With bearing or seal details 291
175/339 With drilling fluid conduit details 104
175/337 With drilling fluid supply to bearing 74
175/338 With rotary or endless carrier 8
175/343 Wobbling cutter 20


Patents under this class:
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Patent Number Title Of Patent Date Issued
8561727 Superabrasive cutting elements and systems and methods for manufacturing the same Oct. 22, 2013
8450637 Apparatus for automated application of hardfacing material to drill bits May. 28, 2013
8403079 Rock bit having a seal gland with a conical sealing surface Mar. 26, 2013
8393418 Rock bit having a seal gland with a conical sealing surface Mar. 12, 2013
8312942 Roller cone drill bits with improved fluid flow Nov. 20, 2012
8307920 Roller cone disk with shaped compacts Nov. 13, 2012
8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures Sep. 18, 2012
8205692 Rock bit and inserts with a chisel crest having a broadened region Jun. 26, 2012
8195438 Method for designing cutting structure for roller cone drill bits Jun. 5, 2012
8096372 Cutter geometry for increased bit life and bits incorporating the same Jan. 17, 2012
8056652 Barrier coated granules for improved hardfacing material using atomic layer deposition Nov. 15, 2011
8028773 Drill bit and cutter element having a fluted geometry Oct. 4, 2011
7913778 Rock bit with hydraulic configuration Mar. 29, 2011
7900718 Earth-boring tools having threads for affixing a body and shank together and methods of manufacture and use of same Mar. 8, 2011
7860693 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk Dec. 28, 2010
7779936 Staggered compact row on same land Aug. 24, 2010
7778777 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk Aug. 17, 2010
7749947 High performance rock bit grease Jul. 6, 2010
7721827 Rock bit having a seal gland with a conical sealing surface May. 25, 2010
7690442 Drill bit and cutting inserts for hard/abrasive formations Apr. 6, 2010
7690446 Single cone rock bit having inserts adapted to maintain hole gage during drilling Apr. 6, 2010
7686106 Rock bit and inserts with wear relief grooves Mar. 30, 2010
7677338 System, method, and apparatus for passive and active updrill features on roller cone drill bits Mar. 16, 2010
7621348 Drag bits with dropping tendencies and methods for making the same Nov. 24, 2009
7621346 Hydrostatic bearing Nov. 24, 2009
7533738 Insert in a downhole drill bit May. 19, 2009
7401668 Single cone rock bit having inserts adapted to maintain hole gage during drilling Jul. 22, 2008
7367413 Cutting elements of gage row and first inner row of a drill bit May. 6, 2008
7331410 Drill bit arcuate-shaped inserts with cutting edges and method of manufacture Feb. 19, 2008
7320375 Split cone bit Jan. 22, 2008
7316281 Two-cone drill bit with enhanced stability Jan. 8, 2008
7299887 Roller bit with a journal pin offset from the central axis thereof Nov. 27, 2007
7292967 Methods for evaluating cutting arrangements for drill bits and their application to roller cone drill bit designs Nov. 6, 2007
7100711 Single cone rock bit having inserts adapted to maintain hole gage during drilling Sep. 5, 2006
7036613 Lip seal for roller cone drill bit May. 2, 2006
7004267 Drill bit cone protector Feb. 28, 2006
6988569 Cutting element orientation or geometry for improved drill bits Jan. 24, 2006
6873947 Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance Mar. 29, 2005
6848521 Cutting elements of gage row and first inner row of a drill bit Feb. 1, 2005
6823951 Arcuate-shaped inserts for drill bits Nov. 30, 2004
6711969 Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles Mar. 30, 2004
6640913 Drill bit with canted gage insert Nov. 4, 2003
6612384 Cutting structure for roller cone drill bits Sep. 2, 2003
6604587 Flat profile cutting structure for roller cone drill bits Aug. 12, 2003
6598689 Roller cone for drill bit having improved resistance to fatigue cracking Jul. 29, 2003
6564886 Drill bit with rows of cutters mounted to present a serrated cutting edge May. 20, 2003
6527068 Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance Mar. 4, 2003
6516293 Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance Feb. 4, 2003
6510909 Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty Jan. 28, 2003
6484824 Failure indicator for rolling cutter drill bit Nov. 26, 2002

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