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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:

Class Number Class Name Patents
175/434 Diamond 337
175/426 Insert 399
175/435 Welded, brazed, or soldered 85


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8028774 Thick pointed superhard material Oct. 4, 2011
8025112 Earth-boring bits and other parts including cemented carbide Sep. 27, 2011
8016056 Asymmetric graded composites for improved drill bits Sep. 13, 2011
8016057 Erosion resistant subterranean drill bits having infiltrated metal matrix bodies Sep. 13, 2011
8007922 Articles having improved resistance to thermal cracking Aug. 30, 2011
7997359 Abrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials Aug. 16, 2011
7980333 Bar trimmers on disk bit Jul. 19, 2011
7975785 Drilling systems including fiber-containing diamond-impregnated cutting tools Jul. 12, 2011
7954569 Earth-boring bits Jun. 7, 2011
7913779 Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits Mar. 29, 2011
7905301 Earth boring drill bits made from a low-carbon, high-molybdenum alloy Mar. 15, 2011
7900720 Downhole drive shaft connection Mar. 8, 2011
7878275 Matrix bit bodies with multiple matrix materials Feb. 1, 2011
7878274 Steel tooth disk with hardfacing Feb. 1, 2011
7866417 Self sharpening steel tooth cutting structure Jan. 11, 2011
7841428 Polycrystalline diamond apparatuses and methods of manufacture Nov. 30, 2010
7832506 Cutting elements with increased toughness and thermal fatigue resistance for drilling applications Nov. 16, 2010
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
7395882 Casing and liner drilling bits Jul. 8, 2008
7395884 High-strength/high toughness alloy steel drill bit blank 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

1 2 3 4










 
 
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