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Class Information
Number: 76/108.2
Name: Metal tools and implements, making > Blank or process > Drill > Rock drill
Description: Invention comprising stock material for, or a method of, making a drill capable of cutting stone.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617747 |
Methods of manufacturing rotary drag bits including a central region having a plurality of cutting structures |
Nov. 17, 2009 |
| 7588102 |
High impact resistant tool |
Sep. 15, 2009 |
| 7571779 |
Drill rod and method of manufacture thereof |
Aug. 11, 2009 |
| 7549912 |
Method of finishing cutting elements |
Jun. 23, 2009 |
| 7543661 |
Roller cone bits with wear and fracture resistant surface |
Jun. 9, 2009 |
| 7506705 |
Method of producing downhole drill bits with integral carbide studs |
Mar. 24, 2009 |
| 7490533 |
Method for making a form-fitting connection between a tool insert and a tool holder of a rotating tool |
Feb. 17, 2009 |
| 7469757 |
Drill bit with diamond impregnated cutter element |
Dec. 30, 2008 |
| 7469618 |
Maintaining carburized case during neutral to the core heat treatment processes |
Dec. 30, 2008 |
| 7401537 |
Cutter insert gum modification method and apparatus |
Jul. 22, 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 |
| 7367413 |
Cutting elements of gage row and first inner row of a drill bit |
May. 6, 2008 |
| 7216565 |
Methods of manufacturing and repairing steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses |
May. 15, 2007 |
| 7210377 |
Cone erosion protection for roller cone drill bits |
May. 1, 2007 |
| 7182159 |
Drill member for rock drilling and a method for manufacturing the drill member |
Feb. 27, 2007 |
| 7159487 |
Method for making a polycrystalline diamond insert drill bit body |
Jan. 9, 2007 |
| 7108598 |
PDC interface incorporating a closed network of features |
Sep. 19, 2006 |
| 7048080 |
Roller cone bits with wear and fracture resistant surface |
May. 23, 2006 |
| 7044243 |
High-strength/high-toughness alloy steel drill bit blank |
May. 16, 2006 |
| 7032693 |
Preformed tooth for tooth bit |
Apr. 25, 2006 |
| 7025155 |
Rock bit with channel structure for retaining cutter segments |
Apr. 11, 2006 |
| 6986297 |
Method of manufacturing PDC cutters with chambers or passages |
Jan. 17, 2006 |
| 6948403 |
Bowed crests for milled tooth bits |
Sep. 27, 2005 |
| 6786288 |
Cutting structure for roller cone drill bits |
Sep. 7, 2004 |
| 6745645 |
Enhanced gage protection for milled tooth rock bits |
Jun. 8, 2004 |
| 6739214 |
Polycrystalline diamond partially depleted of catalyzing material |
May. 25, 2004 |
| 6711969 |
Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles |
Mar. 30, 2004 |
| 6698098 |
Cone erosion protection for roller cone drill bits |
Mar. 2, 2004 |
| 6658968 |
Percussive rock drill bit and buttons therefor and method for manufacturing drill bit |
Dec. 9, 2003 |
| 6655234 |
Method of manufacturing PDC cutter with chambers or passages |
Dec. 2, 2003 |
| 6655481 |
Methods for fabricating drill bits, including assembling a bit crown and a bit body material and integrally securing the bit crown and bit body material to one another |
Dec. 2, 2003 |
| 6651756 |
Steel body drill bits with tailored hardfacing structural elements |
Nov. 25, 2003 |
| 6629476 |
Bi-center bit adapted to drill casing shoe |
Oct. 7, 2003 |
| 6615935 |
Roller cone bits with wear and fracture resistant surface |
Sep. 9, 2003 |
| 6606923 |
Design method for drillout bi-center bits |
Aug. 19, 2003 |
| 6601475 |
Hardfaced drill bit structures and method for making such structures |
Aug. 5, 2003 |
| 6598689 |
Roller cone for drill bit having improved resistance to fatigue cracking |
Jul. 29, 2003 |
| 6571889 |
Rotary cone bit with functionally-engineered composite inserts |
Jun. 3, 2003 |
| 6568491 |
Method for applying hardfacing material to a steel bodied bit and bit formed by such method |
May. 27, 2003 |
| 6568490 |
Method and apparatus for fabricating rotary cone drill bits |
May. 27, 2003 |
| 6564884 |
Wear protection on a rock bit |
May. 20, 2003 |
| 6543312 |
Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
Apr. 8, 2003 |
| 6536305 |
Cutting plate and method of pressing a cutting plate |
Mar. 25, 2003 |
| 6533049 |
Mining drill steels and methods of making the same |
Mar. 18, 2003 |
| 6530441 |
Cutting element geometry for roller cone drill bit |
Mar. 11, 2003 |
| 6527068 |
Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance |
Mar. 4, 2003 |
| 6454030 |
Drill bits and other articles of manufacture including a layer-manufactured shell integrally secured to a cast structure and methods of fabricating same |
Sep. 24, 2002 |
| 6450271 |
Surface modifications for rotary drill bits |
Sep. 17, 2002 |
| 6446740 |
Cutting element with improved polycrystalline material toughness and method for making same |
Sep. 10, 2002 |
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