| |
 |
|
Class Information
Number: 175/371
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > With bearing or seal details
Description: Apparatus provided with a specific bearing or seal structure.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621346 |
Hydrostatic bearing |
Nov. 24, 2009 |
| 7552783 |
Graded hardfacing for drill bits |
Jun. 30, 2009 |
| 7543660 |
Roller cone drill bit with debris diverter plugs |
Jun. 9, 2009 |
| 7530409 |
Rotary roller reamer |
May. 12, 2009 |
| 7484572 |
Roller cone drill bit with debris flow paths through associated support arms |
Feb. 3, 2009 |
| 7469618 |
Maintaining carburized case during neutral to the core heat treatment processes |
Dec. 30, 2008 |
| 7461708 |
Elastomeric seal assembly having auxiliary annular seal components |
Dec. 9, 2008 |
| 7413037 |
Metal face seal for an earth-boring bit |
Aug. 19, 2008 |
| 7392862 |
Seal insert ring for roller cone bits |
Jul. 1, 2008 |
| 7387178 |
Self relieving seal |
Jun. 17, 2008 |
| 7387177 |
Bearing insert sleeve for roller cone bit |
Jun. 17, 2008 |
| RE40197 |
Drill bit having an improved seal and lubrication method using same |
Apr. 1, 2008 |
| 7320375 |
Split cone bit |
Jan. 22, 2008 |
| 7311159 |
PCD face seal for earth-boring bit |
Dec. 25, 2007 |
| 7306061 |
Mud diverter for earth-boring bit |
Dec. 11, 2007 |
| 7278500 |
Roller cutter |
Oct. 9, 2007 |
| 7267186 |
Magnetic face seal for rock drill bit bearings |
Sep. 11, 2007 |
| 7201241 |
Self relieving seal |
Apr. 10, 2007 |
| 7188691 |
Metal seal with impact-absorbing ring |
Mar. 13, 2007 |
| 7128173 |
PCD face seal for earth-boring bit |
Oct. 31, 2006 |
| 7117961 |
Dynamic seal with soft interface |
Oct. 10, 2006 |
| 7086487 |
Anti-mud packing seal gland |
Aug. 8, 2006 |
| 7066287 |
Mud debris diverter for earth-boring bit |
Jun. 27, 2006 |
| 7044242 |
Roller cone bits with reduced packing |
May. 16, 2006 |
| 7036613 |
Lip seal for roller cone drill bit |
May. 2, 2006 |
| 7013998 |
Drill bit having an improved seal and lubrication method using same |
Mar. 21, 2006 |
| 7000712 |
Bearing seal |
Feb. 21, 2006 |
| 6976548 |
Self relieving seal |
Dec. 20, 2005 |
| 6935443 |
Mini disk bit |
Aug. 30, 2005 |
| 6837317 |
Bearing seal |
Jan. 4, 2005 |
| 6820704 |
Rock bit seal with extrusion prevention member |
Nov. 23, 2004 |
| 6789634 |
Self-lubricating elastomeric seal with polarized graphite |
Sep. 14, 2004 |
| 6769500 |
Optimized earth boring seal means |
Aug. 3, 2004 |
| 6752223 |
Roller cone bit with improved seal gland design |
Jun. 22, 2004 |
| 6725947 |
Roller bits with bearing failure indication, and related methods, systems, and methods of manufacturing |
Apr. 27, 2004 |
| 6708786 |
Mounting attachment and bearing system for an industrial earth-boring cutter |
Mar. 23, 2004 |
| 6695079 |
Dual-seal drill bit pressure communication system |
Feb. 24, 2004 |
| 6679342 |
Dual-seal drill bit pressure communication system |
Jan. 20, 2004 |
| 6637528 |
Bit apparatus |
Oct. 28, 2003 |
| 6598690 |
Dual dynamic rotary seal |
Jul. 29, 2003 |
| 6578647 |
Sealing structure for a rock drill bit |
Jun. 17, 2003 |
| 6571889 |
Rotary cone bit with functionally-engineered composite inserts |
Jun. 3, 2003 |
| 6536542 |
Rock bit seal with multiple dynamic seal surface elements |
Mar. 25, 2003 |
| 6533051 |
Roller cone drill bit shale diverter |
Mar. 18, 2003 |
| 6513607 |
Metal-face-seal rock bit |
Feb. 4, 2003 |
| 6474424 |
Rotary cone drill bit with improved bearing system |
Nov. 5, 2002 |
| 6431293 |
Dual-seal drill bit pressure communication system |
Aug. 13, 2002 |
| 6427790 |
Rock bit face seal having lubrication gap |
Aug. 6, 2002 |
| 6408957 |
Sealed bearing roller cone bit having anti-plugging device |
Jun. 25, 2002 |
| 6401843 |
Drilling head with a cone rock bit |
Jun. 11, 2002 |
|
|
|
