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Browse by Category: Main > Construction
Class Information
Number: 175/405.1
Name: Boring or penetrating the earth > Bit or bit element > Core forming type > Includes diamond
Description: Apparatus in which the cutter element or cutting edge of the bit contains the very hard crystalline form of the element carbon.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8684111 Core drill bit Apr. 1, 2014
8662210 Rotary drill bit including polycrystalline diamond cutting elements Mar. 4, 2014
8657183 Method of bonding poly-crystalline diamonds to wear surfaces Feb. 25, 2014
8596387 Polycrystalline diamond compact including a non-uniformly leached polycrystalline diamond table and applications therefor Dec. 3, 2013
8579053 Polycrystalline diamond material with high toughness and high wear resistance Nov. 12, 2013
8579052 Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools Nov. 12, 2013
8573330 Highly wear resistant diamond insert with improved transition structure Nov. 5, 2013
8499861 Ultra-hard composite constructions comprising high-density diamond surface Aug. 6, 2013
8210287 Mining core drill bit and method of making thereof Jul. 3, 2012
8186460 Hard material insert and core bit May. 29, 2012
8147572 Thermally stable diamond polycrystalline diamond constructions Apr. 3, 2012
8146686 Fiber-containing cutting tools Apr. 3, 2012
8051929 Core drill bits with enclosed fluid slots Nov. 8, 2011
8025107 Reamer with polycrystalline diamond compact inserts Sep. 27, 2011
7958954 Drill bits with enclosed slots Jun. 14, 2011
7918288 Drill bits with enclosed fluid slots and method Apr. 5, 2011
7909119 Drill bits with notches and enclosed slots Mar. 22, 2011
7874384 Drill bits with increased crown height Jan. 25, 2011
7828090 Drill bits with enclosed fluid slots and internal flutes Nov. 9, 2010
7695542 Fiber-containing diamond-impregnated cutting tools Apr. 13, 2010
7641004 Drill bit Jan. 5, 2010
7628228 Core drill bit with extended crown height Dec. 8, 2009
7341120 Blade edge structure for core drill Mar. 11, 2008
7278499 Rotary drag bit including a central region having a plurality of cutting structures Oct. 9, 2007
7258179 Rotary bit with an indenting member Aug. 21, 2007
6595844 Outer-diameter blade, inner-diameter blade, core drill and processing machines using same ones Jul. 22, 2003
6474425 Asymmetric diamond impregnated drill bit Nov. 5, 2002
6283233 Drilling and/or coring tool Sep. 4, 2001
5823276 Diamond-tipped core barrel and method of using same Oct. 20, 1998
5655614 Self-centering polycrystalline diamond cutting rock bit Aug. 12, 1997
5568838 Bit-stabilized combination coring and drilling system Oct. 29, 1996
5505272 Drill bits Apr. 9, 1996
5460230 Core bit Oct. 24, 1995
5025871 Drilling method and rotary drill bit crown Jun. 25, 1991
5015128 Rotary drill apparatus May. 14, 1991
4981183 Apparatus for taking core samples Jan. 1, 1991
4907663 Drilling tool Mar. 13, 1990
4760888 Drill bit for core boring Aug. 2, 1988
4723868 Apparatus for installing circular traffic loops Feb. 9, 1988
4681174 Diamond crown bit Jul. 21, 1987
4667755 Drill bit having hollow cylindrical body and a plurality of PCD cutting elements May. 26, 1987
4657445 Core drill and method of removing a core therefrom Apr. 14, 1987
4640374 Rotary drill bit Feb. 3, 1987
4630692 Consolidation of a drilling element from separate metallic components Dec. 23, 1986
4552231 Rotating pilot core bit for use in highly fractured formations Nov. 12, 1985
4551045 Countersink core drill assembly and method of utilizing same Nov. 5, 1985
4538691 Rotary drill bit Sep. 3, 1985
4534773 Abrasive product and method for manufacturing Aug. 13, 1985
4499959 Tooth configuration for an earth boring bit Feb. 19, 1985
4352400 Drill bit Oct. 5, 1982

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