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Class Information
Number: 175/327
Name: Boring or penetrating the earth > Bit or bit element
Description: Apparatus comprising (1) a tool having a cutter element or cutting edge which is disclosed as specifically adapted to mechanically contact and selectively cut, disintegrate or dislocate portions of masonry, stone, rock or earth formations to form or enlarge a hole or bore therein or (2) subcombinations of such a tool not otherwise classified.

Sub-classes under this class:

Class Number Class Name Patents
175/382 Adjustable cutter element 26
175/396 Axially parallel side wall with transverse cuttings retaining portion 8
175/385 Bit with leading portion (e.g., pilot) forming smaller diameter initial bore 157
175/402 Casing shoe type 48
175/403 Core forming type 111
175/379 Cutting edge self-renewable during operation 43
175/401 Cutting edges facing in opposite axial directions 21
175/381 Cutting edges relatively longitudinally movable during operation 27
175/397 Forked rotary nontracking 14
175/414 Impact or percussion type 93
175/328 Magnetized or with magnet 16
175/406 Noncutting portion forwardly of cutting portion (e.g., reamer) 144
175/398 Nonsymmetrical bit 89
175/412 Plural separable cutter elements 30
175/331 Rolling cutter bit or rolling cutter bit element 98
175/425 Specific or diverse material 201
175/421 Symmetrical forked rotary type (e.g., fishtail) 18
175/380 Unsupported abrading particle type (e.g., shot) 5
175/408 With bit guide or bore wall compacting device 117
175/393 With fluid conduit lining or element (e.g., slush tube) 276
175/394 With helical-conveying portion 208

Patents under this class:

Patent Number Title Of Patent Date Issued
8662210 Rotary drill bit including polycrystalline diamond cutting elements Mar. 4, 2014
8550182 Electromagnetic energy assisted drilling system and method Oct. 8, 2013
8550189 Drive pin support Oct. 8, 2013
8485283 Drill bit Jul. 16, 2013
8453761 Resonance enhanced drilling: method and apparatus Jun. 4, 2013
8383559 Releasable corrosion inhibitors Feb. 26, 2013
8360169 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Jan. 29, 2013
8353368 Resonance enhanced drilling: method and apparatus Jan. 15, 2013
8355815 Methods, systems, and devices for manipulating cutting elements for earth-boring drill bits and tools Jan. 15, 2013
8316967 Earth-boring tools with primary and secondary blades, methods of forming and designing such earth-boring tools Nov. 27, 2012
8312941 Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods Nov. 20, 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
8201648 Earth-boring particle-matrix rotary drill bit and method of making the same Jun. 19, 2012
8172915 Method of making a composite diamond body May. 8, 2012
8112258 PDC drill bit using optimized side rake angle Feb. 7, 2012
8028765 Drill bit, drilling system, and related methods Oct. 4, 2011
8016057 Erosion resistant subterranean drill bits having infiltrated metal matrix bodies Sep. 13, 2011
8016054 Polycrystalline diamond abrasive elements Sep. 13, 2011
7968184 Erosion resistant surface and method of making erosion resistant surfaces Jun. 28, 2011
7779901 Downhole debris catcher and associated mill Aug. 24, 2010
7775287 Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods Aug. 17, 2010
7703556 Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods Apr. 27, 2010
7703557 Fixed cutter bit with backup cutter elements on primary blades Apr. 27, 2010
7533738 Insert in a downhole drill bit May. 19, 2009
7506706 Retaining element for a jack element Mar. 24, 2009
7484576 Jack element in communication with an electric motor and or generator Feb. 3, 2009
7465096 Earth boring bit with tilted hydrodynamic thrust bearing Dec. 16, 2008
7457734 Representation of whirl in fixed cutter drill bits Nov. 25, 2008
7286959 Drill bit performance analysis tool Oct. 23, 2007
7191853 Hole cleaning and/or forming tool Mar. 20, 2007
6932170 Drilling head Aug. 23, 2005
6789635 Drill bit for directional drilling in cobble formations Sep. 14, 2004
6729420 Multi profile performance enhancing centric bit and method of bit design May. 4, 2004
6634444 Drill bit for trenchless drilling Oct. 21, 2003
6615934 PDC drill bit having cutting structure adapted to improve high speed drilling performance Sep. 9, 2003
6585064 Polycrystalline diamond partially depleted of catalyzing material Jul. 1, 2003
6392190 Automated hardfacing system May. 21, 2002
6374916 Method and apparatus for stiffening an output shaft on a cutting tool assembly Apr. 23, 2002
6124564 Hardfacing compositions and hardfacing coatings formed by pulsed plasma-transferred arc Sep. 26, 2000
5839525 Directional drill bit Nov. 24, 1998
5836407 Articulated tool for drilling oil, gas geothermal wells Nov. 17, 1998
5404660 Mechanism for supporting an earthworking etc. tool Apr. 11, 1995
4953640 Quick detach bit Sep. 4, 1990
4854404 Bucket auger Aug. 8, 1989
4496013 Prevention of cone seal failures in rock bits Jan. 29, 1985
4406336 Drilling bit Sep. 27, 1983

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