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Class Information
Number: 175/413
Name: Boring or penetrating the earth > Bit or bit element > Plural separable cutter elements > Independently attachable
Description: Apparatus in which each cutter element can be separately attached or detached from the bit head without attaching or detaching the other elements.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8499859 Drill bit having rotational cutting elements and method of drilling Aug. 6, 2013
8418784 Central cutting region of a drilling head assembly Apr. 16, 2013
8336649 Drill bit for earth boring Dec. 25, 2012
8336648 Mechanical attachment of thermally stable diamond to a substrate Dec. 25, 2012
8286735 Drill bit having rotational cutting elements and method of drilling Oct. 16, 2012
8177000 Modular system for a back reamer and method May. 15, 2012
8118119 Impregnated rotary bit Feb. 21, 2012
8079431 Drill bit having rotational cutting elements and method of drilling Dec. 20, 2011
8011456 Rotationally indexable cutting elements and drill bits therefor Sep. 6, 2011
7926597 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same Apr. 19, 2011
7882907 Earth boring bit Feb. 8, 2011
7845437 Hole opener assembly and a cone arm forming a part thereof Dec. 7, 2010
7823657 Drilling assembly, drilling reamer arm assembly, and methods of drilling Nov. 2, 2010
7571781 Auger bit Aug. 11, 2009
7533739 Cutting element apparatuses and drill bits so equipped May. 19, 2009
7458430 Attachment means for drilling equipment Dec. 2, 2008
7419017 Multi-sectional percussive drill bit assembly Sep. 2, 2008
7389833 Multi-sectional percussive drill bit assembly Jun. 24, 2008
7383901 Releasable auger tooth Jun. 10, 2008
7152702 Modular system for a back reamer and method Dec. 26, 2006
7096981 Alternating inclinations of compacts for drill bit Aug. 29, 2006
7096982 Drill shoe Aug. 29, 2006
7066288 Asymmetric compact for drill bit Jun. 27, 2006
7025155 Rock bit with channel structure for retaining cutter segments Apr. 11, 2006
6827159 Steerable horizontal subterranean drill bit having an offset drilling fluid seal Dec. 7, 2004
6814168 Steerable horizontal subterranean drill bit having elevated wear protector receptacles Nov. 9, 2004
6810971 Steerable horizontal subterranean drill bit Nov. 2, 2004
6810973 Steerable horizontal subterranean drill bit having offset cutting tooth paths Nov. 2, 2004
6810972 Steerable horizontal subterranean drill bit having a one bolt attachment system Nov. 2, 2004
6742608 Rotary mine drilling bit for making blast holes Jun. 1, 2004
6561291 Roller cone drill bit structure having improved journal angle and journal offset May. 13, 2003
6427791 Drill bit assembly for releasably retaining a drill bit cutter Aug. 6, 2002
6390087 Drill bit for directional drilling May. 21, 2002
6302224 Drag-bit drilling with multi-axial tooth inserts Oct. 16, 2001
6283234 Apparatus for mounting PCD compacts Sep. 4, 2001
6213231 Boring tool with rectangular plates Apr. 10, 2001
6021856 Bit retention system Feb. 8, 2000
6022176 Tool bit with marking member Feb. 8, 2000
5996714 Rotatable cutting bit assembly with wedge-lock retention assembly Dec. 7, 1999
5810103 Method and apparatus for mounting PCD compacts Sep. 22, 1998
5735360 Mining bit Apr. 7, 1998
5588497 Mounting drill buttons Dec. 31, 1996
5498069 Bit holder with a detachably fixed bit bushing Mar. 12, 1996
5497843 Hollow auger head assembly Mar. 12, 1996
5370448 Wedging arrangement for attaching a bit holder to the base member of a mining road working, or earth moving machine Dec. 6, 1994
5302005 Apparatus for holding a cutting bit Apr. 12, 1994
5174396 Cutter assemblies for rotary drill bits Dec. 29, 1992
5150636 Rock drill bit and method of making same Sep. 29, 1992
5139099 Excavation tool Aug. 18, 1992
5088797 Method and apparatus for holding a cutting bit Feb. 18, 1992

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