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Class Information
Number: 175/337
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > With drilling fluid supply to bearing
Description: Apparatus in which the cutter element is rotatably mounted on a bearing and in which drilling fluid is supplied to the bearing to clean, cool or lubricate such bearing.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7237627 |
Bearing and lubrication system for earth boring bit |
Jul. 3, 2007 |
| 7128171 |
Hydrodynamic pump passages for rolling cone drill bit |
Oct. 31, 2006 |
| 6802380 |
Pressure relief system and methods of use and making |
Oct. 12, 2004 |
| 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 |
| 6513607 |
Metal-face-seal rock bit |
Feb. 4, 2003 |
| 6484823 |
Rock drill bit and a check valve therefor |
Nov. 26, 2002 |
| 6431293 |
Dual-seal drill bit pressure communication system |
Aug. 13, 2002 |
| 6408957 |
Sealed bearing roller cone bit having anti-plugging device |
Jun. 25, 2002 |
| 6405811 |
Solid lubricant for air cooled drill bit and method of drilling |
Jun. 18, 2002 |
| 6390209 |
Roller cone drill bit with improved pressure compensation |
May. 21, 2002 |
| 6213228 |
Roller cone drill bit with improved pressure compensation |
Apr. 10, 2001 |
| 6202766 |
Relief valve |
Mar. 20, 2001 |
| 6196339 |
Dual-seal drill bit pressure communication system |
Mar. 6, 2001 |
| 6109374 |
Roller stabilizer |
Aug. 29, 2000 |
| 6102135 |
Portable core sampler |
Aug. 15, 2000 |
| 5513711 |
Sealed and lubricated rotary cone drill bit having improved seal protection |
May. 7, 1996 |
| 5012876 |
Rotary drill bit providing separation of liquid from gas |
May. 7, 1991 |
| 4981182 |
Sealed rotary blast hole drill bit utilizing air pressure for seal protection |
Jan. 1, 1991 |
| 4887675 |
Earth boring bit with pin mounted compensator |
Dec. 19, 1989 |
| 4813502 |
Drilling bit with improved trailing edge vent |
Mar. 21, 1989 |
| 4805709 |
Drill bit and drill assembly |
Feb. 21, 1989 |
| 4793424 |
Self-lubricating well tools and seal elements therefor |
Dec. 27, 1988 |
| 4750573 |
Drill bit having a flush-out port |
Jun. 14, 1988 |
| 4688647 |
Drill bit having a failure indicator |
Aug. 25, 1987 |
| 4688651 |
Cone mouth debris exclusion shield |
Aug. 25, 1987 |
| 4646858 |
Earth boring bit with air system access |
Mar. 3, 1987 |
| 4610313 |
Drill bit having a failure indicator |
Sep. 9, 1986 |
| 4591008 |
Lube reservoir protection for rock bits |
May. 27, 1986 |
| 4560014 |
Thrust bearing assembly for a downhole drill motor |
Dec. 24, 1985 |
| 4552232 |
Drill-bit with full offset cutter bodies |
Nov. 12, 1985 |
| 4548280 |
Drill bit having a failure indicator |
Oct. 22, 1985 |
| 4516640 |
Rotary drill bit |
May. 14, 1985 |
| 4515229 |
Drill bit assembly with fluid separator |
May. 7, 1985 |
| 4508183 |
Method and apparatus for lubricating a drill bit |
Apr. 2, 1985 |
| 4488607 |
Separator sub with annular flow passage |
Dec. 18, 1984 |
| 4457384 |
Water separator and backflow valve |
Jul. 3, 1984 |
| 4428442 |
Rock bit lubrication system |
Jan. 31, 1984 |
| 4421184 |
Rock bit with improved shirttail ventilation |
Dec. 20, 1983 |
| 4412590 |
Rock bit internal lubricant pump |
Nov. 1, 1983 |
| 4398610 |
Roller reamer apparatus |
Aug. 16, 1983 |
| 4359113 |
Earth boring bit with extended gage |
Nov. 16, 1982 |
| 4354559 |
Enlarged borehole drilling method and apparatus |
Oct. 19, 1982 |
| 4354560 |
Apparatus for drilling enlarged boreholes |
Oct. 19, 1982 |
| 4335794 |
Rotary cone cutter |
Jun. 22, 1982 |
| 4284151 |
Lubricating device |
Aug. 18, 1981 |
| 4280571 |
Rock bit |
Jul. 28, 1981 |
| 4272134 |
Rotary drill bit |
Jun. 9, 1981 |
| 4245710 |
Centrifugal water-air separation in earth drilling bits |
Jan. 20, 1981 |
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