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Class Information
Number: 175/425
Name: Boring or penetrating the earth > Bit or bit element > Specific or diverse material
Description: Apparatus in which the bit or any portion thereof is composed of either (1) two different materials, (2) a single material which has been treated to provide portions of the bit with specific properties which are different from the properties of another portion or (3) a particular material to which significance is attributed.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7823665 |
Milling of cemented tubulars |
Nov. 2, 2010 |
| 7823664 |
Corrosion protection for head section of earth boring bit |
Nov. 2, 2010 |
| 7810587 |
Drill bits comprising dual-phase tungsten carbide material |
Oct. 12, 2010 |
| 7802495 |
Methods of forming earth-boring rotary drill bits |
Sep. 28, 2010 |
| 7784381 |
Matrix drill bits and method of manufacture |
Aug. 31, 2010 |
| 7784567 |
Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits |
Aug. 31, 2010 |
| 7779937 |
Steel tooth bit with scooped teeth profile |
Aug. 24, 2010 |
| 7735585 |
Hard material insert for a drill and a drill with the hard material insert |
Jun. 15, 2010 |
| 7703555 |
Drilling tools having hardfacing with nickel-based matrix materials and hard particles |
Apr. 27, 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 |
| 7695542 |
Fiber-containing diamond-impregnated cutting tools |
Apr. 13, 2010 |
| 7677338 |
System, method, and apparatus for passive and active updrill features on roller cone drill bits |
Mar. 16, 2010 |
| 7666244 |
Hardfacing milled-tooth drill bits using super dense carbide pellets |
Feb. 23, 2010 |
| 7661491 |
High-strength, high-toughness matrix bit bodies |
Feb. 16, 2010 |
| 7654346 |
Steel tooth drill bit with improved tooth breakage resistance |
Feb. 2, 2010 |
| 7621347 |
Bit leg and cone hardfacing for earth-boring bit |
Nov. 24, 2009 |
| 7588102 |
High impact resistant tool |
Sep. 15, 2009 |
| 7571782 |
Stiffened blade for shear-type drill bit |
Aug. 11, 2009 |
| 7510034 |
System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials |
Mar. 31, 2009 |
| 7506705 |
Method of producing downhole drill bits with integral carbide studs |
Mar. 24, 2009 |
| 7497280 |
Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same |
Mar. 3, 2009 |
| 7493965 |
Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use |
Feb. 24, 2009 |
| 7484577 |
Bit leg outer surface hardfacing on earth-boring bit |
Feb. 3, 2009 |
| 7475743 |
High-strength, high-toughness matrix bit bodies |
Jan. 13, 2009 |
| 7469756 |
Tool with a large volume of a superhard material |
Dec. 30, 2008 |
| 7407525 |
Fracture and wear resistant compounds and down hole cutting tools |
Aug. 5, 2008 |
| 7398840 |
Matrix drill bits and method of manufacture |
Jul. 15, 2008 |
| 7395884 |
High-strength/high toughness alloy steel drill bit blank |
Jul. 8, 2008 |
| 7395882 |
Casing and liner drilling bits |
Jul. 8, 2008 |
| 7392866 |
Roof drilling system improvements |
Jul. 1, 2008 |
| 7357200 |
Earth auger |
Apr. 15, 2008 |
| 7353893 |
Tool with a large volume of a superhard material |
Apr. 8, 2008 |
| 7350600 |
Shirttails for reducing damaging effects of cuttings |
Apr. 1, 2008 |
| 7347292 |
Braze material for an attack tool |
Mar. 25, 2008 |
| 7303030 |
Barrier coated granules for improved hardfacing material |
Dec. 4, 2007 |
| 7264879 |
Composite constructions with oriented microstructure |
Sep. 4, 2007 |
| 7258177 |
Fracture and wear resistant compounds and rock bits |
Aug. 21, 2007 |
| 7240746 |
Bit gage hardfacing |
Jul. 10, 2007 |
| 7216727 |
Drilling bit for drilling while running casing |
May. 15, 2007 |
| 7201237 |
Stabilizing system and methods for a drill bit |
Apr. 10, 2007 |
| 7195736 |
Lead-free steel for machine structural use with excellent machinability and low strength anisotropy |
Mar. 27, 2007 |
| 7182162 |
Shirttails for reducing damaging effects of cuttings |
Feb. 27, 2007 |
| 7100712 |
Method for hardfacing roller cone drill bit legs |
Sep. 5, 2006 |
| 7044243 |
High-strength/high-toughness alloy steel drill bit blank |
May. 16, 2006 |
| 7036614 |
Fracture and wear resistant compounds and rock bits |
May. 2, 2006 |
| 7032693 |
Preformed tooth for tooth bit |
Apr. 25, 2006 |
| 6955233 |
Roller cone drill bit legs |
Oct. 18, 2005 |
| 6948403 |
Bowed crests for milled tooth bits |
Sep. 27, 2005 |
| 6841260 |
Composite constructions with oriented microstructure |
Jan. 11, 2005 |
| 6782958 |
Hardfacing for milled tooth drill bits |
Aug. 31, 2004 |
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