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Class Information
Number: 175/227
Name: Boring or penetrating the earth > With storage means for bit lubricant carried by bit or shaft
Description: Apparatus in which the tool, tool shaft or tool housing is provided with a means to retain and/or supply a friction reducing fluid or grease to the cutter or formation disintegrating member or a portion thereof (e.g., the bearings of a rolling cutter).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7464773 |
Enhanced drill bit lubrication apparatus and method |
Dec. 16, 2008 |
| 7445062 |
Grease filling arrangement in a cutter for a boring head |
Nov. 4, 2008 |
| 7267183 |
Drill bit lubricant with enhanced load carrying/anti wear properties |
Sep. 11, 2007 |
| 7121365 |
Rock bit with grease composition utilizing polarized graphite |
Oct. 17, 2006 |
| 6698536 |
Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system |
Mar. 2, 2004 |
| 6695079 |
Dual-seal drill bit pressure communication system |
Feb. 24, 2004 |
| 6679342 |
Dual-seal drill bit pressure communication system |
Jan. 20, 2004 |
| 6431293 |
Dual-seal drill bit pressure communication system |
Aug. 13, 2002 |
| 6405811 |
Solid lubricant for air cooled drill bit and method of drilling |
Jun. 18, 2002 |
| 6296067 |
Protected lubricant reservoir for sealed bearing earth boring drill bit |
Oct. 2, 2001 |
| 6206110 |
Protected lubricant reservoir with pressure control for sealed bearing earth boring drill bit |
Mar. 27, 2001 |
| 6196339 |
Dual-seal drill bit pressure communication system |
Mar. 6, 2001 |
| 6092611 |
Encapsulated elastomeric relief valve |
Jul. 25, 2000 |
| 6056072 |
Lubricating grease |
May. 2, 2000 |
| 5984024 |
Cutter, a stopper means and a method of preventing mud from entering into a cutter |
Nov. 16, 1999 |
| 5931241 |
Hydrostatic thrust face lubrication system |
Aug. 3, 1999 |
| 5891830 |
Lubricating grease |
Apr. 6, 1999 |
| 5791421 |
Optimal material pair for metal face seal in earth-boring bits |
Aug. 11, 1998 |
| 5668092 |
Rock bit grease composition |
Sep. 16, 1997 |
| 5628375 |
Thrust face lubrication system for a rolling cutter drill bit |
May. 13, 1997 |
| 5589443 |
Rock bit grease composition |
Dec. 31, 1996 |
| 5520257 |
Bit with ball plug compensator having pressure relief means |
May. 28, 1996 |
| 5477934 |
Lubricating mechanism and method for a rotary cutter |
Dec. 26, 1995 |
| 5439068 |
Modular rotary drill bit |
Aug. 8, 1995 |
| 5015401 |
Bearings grease for rock bit bearings |
May. 14, 1991 |
| 4981182 |
Sealed rotary blast hole drill bit utilizing air pressure for seal protection |
Jan. 1, 1991 |
| 4865136 |
Pressure relief valve for roller bit |
Sep. 12, 1989 |
| 4749053 |
Drill bit having a thrust bearing heat sink |
Jun. 7, 1988 |
| 4678045 |
Turbine tool |
Jul. 7, 1987 |
| 4591008 |
Lube reservoir protection for rock bits |
May. 27, 1986 |
| 4588309 |
Resilient bearing seal with ability to compensate for wear and compression set |
May. 13, 1986 |
| 4509607 |
Compressible pressure compensator within closed lubricant volume of an earth boring apparatus |
Apr. 9, 1985 |
| 4453604 |
Turbodrills |
Jun. 12, 1984 |
| 4410284 |
Composite floating element thrust bearing |
Oct. 18, 1983 |
| 4399878 |
Lubricating device |
Aug. 23, 1983 |
| 4398610 |
Roller reamer apparatus |
Aug. 16, 1983 |
| 4388973 |
Direct drill bit drive |
Jun. 21, 1983 |
| 4386667 |
Plunger lubricant compensator for an earth boring drill bit |
Jun. 7, 1983 |
| 4359111 |
Self compensating seal apparatus |
Nov. 16, 1982 |
| 4358384 |
Composite grease for rock bit bearings |
Nov. 9, 1982 |
| 4330158 |
Rotary rock bit with improved thrust flange |
May. 18, 1982 |
| 4287957 |
Cooling a drilling tool component with a separate flow stream of reduced-temperature gaseous drilling fluid |
Sep. 8, 1981 |
| 4284151 |
Lubricating device |
Aug. 18, 1981 |
| 4280571 |
Rock bit |
Jul. 28, 1981 |
| 4262759 |
Combination seal and pressure relief valve for sealed drill string unit |
Apr. 21, 1981 |
| 4256190 |
Sonically assisted lubrication of journal bearings |
Mar. 17, 1981 |
| 4249781 |
Rotary drilling bit with conically shaped rotary cutters |
Feb. 10, 1981 |
| 4249621 |
Friction bearing rock bit and segment |
Feb. 10, 1981 |
| 4249622 |
Floating seal for drill bits |
Feb. 10, 1981 |
| 4247150 |
Bit arrangement for a cutting tool |
Jan. 27, 1981 |
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