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Class Information
Number: 175/372
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > With bearing or seal details > Antifriction type
Description: Apparatus in which the bearing is an antifriction bearing employing rolling elements.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7413037 |
Metal face seal for an earth-boring bit |
Aug. 19, 2008 |
| 7387177 |
Bearing insert sleeve for roller cone bit |
Jun. 17, 2008 |
| 7360612 |
Roller cone drill bits with optimized bearing structures |
Apr. 22, 2008 |
| RE40197 |
Drill bit having an improved seal and lubrication method using same |
Apr. 1, 2008 |
| 7347290 |
Multi-part energizer for mechanical seal assembly |
Mar. 25, 2008 |
| 7237627 |
Bearing and lubrication system for earth boring bit |
Jul. 3, 2007 |
| 7234541 |
DLC coating for earth-boring bit seal ring |
Jun. 26, 2007 |
| 7117961 |
Dynamic seal with soft interface |
Oct. 10, 2006 |
| 7073611 |
Ion-beam assisted deposition of inorganic coatings for elastomeric seal wear resistance improvement |
Jul. 11, 2006 |
| 7013998 |
Drill bit having an improved seal and lubrication method using same |
Mar. 21, 2006 |
| 6802380 |
Pressure relief system and methods of use and making |
Oct. 12, 2004 |
| 6769500 |
Optimized earth boring seal means |
Aug. 3, 2004 |
| 6684966 |
PCD face seal for earth-boring bit |
Feb. 3, 2004 |
| 6679342 |
Dual-seal drill bit pressure communication system |
Jan. 20, 2004 |
| 6578647 |
Sealing structure for a rock drill bit |
Jun. 17, 2003 |
| 6536542 |
Rock bit seal with multiple dynamic seal surface elements |
Mar. 25, 2003 |
| 6460635 |
Load responsive hydrodynamic bearing |
Oct. 8, 2002 |
| 6450270 |
Rotary cone bit for cutting removal |
Sep. 17, 2002 |
| 6220374 |
Rotary cone drill bit with enhanced thrust bearing flange |
Apr. 24, 2001 |
| 6196339 |
Dual-seal drill bit pressure communication system |
Mar. 6, 2001 |
| 6176331 |
Bearing sealing means of earth boring bits |
Jan. 23, 2001 |
| 6056072 |
Lubricating grease |
May. 2, 2000 |
| 5842531 |
Rotary rock bit with infiltrated bearings |
Dec. 1, 1998 |
| 5794726 |
Rotary rock bit with infiltrated bearings |
Aug. 18, 1998 |
| 5673921 |
Slide ring and/or counterring made of two materials |
Oct. 7, 1997 |
| 5577565 |
Compact roller cutter |
Nov. 26, 1996 |
| 5520257 |
Bit with ball plug compensator having pressure relief means |
May. 28, 1996 |
| 5485891 |
Cone drill bit |
Jan. 23, 1996 |
| 5402858 |
O-ring seal for rock bit bearings |
Apr. 4, 1995 |
| 5251914 |
Sealing assembly for relatively movable members |
Oct. 12, 1993 |
| 5152353 |
High speed rock bit |
Oct. 6, 1992 |
| 5129471 |
Earth boring bit with protected seal means |
Jul. 14, 1992 |
| 5092412 |
Earth boring bit with recessed roller bearing |
Mar. 3, 1992 |
| 5016719 |
Rotary cone type rock bits |
May. 21, 1991 |
| 5009519 |
Sealing assembly for relatively movable members |
Apr. 23, 1991 |
| 4942930 |
Lubrication system for an earth boring drill bit and methods for filling and retrofit installing thereof |
Jul. 24, 1990 |
| 4923020 |
Rock bit with rigid face seals and recessed energizers |
May. 8, 1990 |
| 4875532 |
Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material |
Oct. 24, 1989 |
| 4753303 |
Earth boring bit with two piece bearing and rigid face seal assembly |
Jun. 28, 1988 |
| 4727942 |
Compensator for earth boring bits |
Mar. 1, 1988 |
| 4597455 |
Rock bit lubrication system |
Jul. 1, 1986 |
| 4557609 |
Rotary drill bit |
Dec. 10, 1985 |
| 4552232 |
Drill-bit with full offset cutter bodies |
Nov. 12, 1985 |
| 4516641 |
Earth boring bit with pressure compensating rigid face seal |
May. 14, 1985 |
| 4448268 |
Rock bit with bearing lubricant reservoir |
May. 15, 1984 |
| 4431066 |
Stressed relieved bit leg for an earth boring bit |
Feb. 14, 1984 |
| 4416554 |
Thrust bearing for rock bits |
Nov. 22, 1983 |
| 4399879 |
Boring head |
Aug. 23, 1983 |
| 4386667 |
Plunger lubricant compensator for an earth boring drill bit |
Jun. 7, 1983 |
| 4367904 |
Rotary drill bit with conical rotary cutters |
Jan. 11, 1983 |
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