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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:
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Patent Number Title Of Patent Date Issued
8517122 Air/water separator and methods of use thereof Aug. 27, 2013
8096372 Cutter geometry for increased bit life and bits incorporating the same Jan. 17, 2012
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
4688651 Cone mouth debris exclusion shield Aug. 25, 1987
4688647 Drill bit having a failure indicator 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

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