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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:

Class Number Class Name Patents
175/372 Antifriction type 103


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
4289631 Compositions and process for extension of the useful life of machine elements Sep. 15, 1981
4287957 Cooling a drilling tool component with a separate flow stream of reduced-temperature gaseous drilling fluid Sep. 8, 1981
4279316 Earth boring bit with eccentric seal boss Jul. 21, 1981
4270812 Drill bit bearing Jun. 2, 1981
4266622 Rotary rock bit and method of making same May. 12, 1981
4262759 Combination seal and pressure relief valve for sealed drill string unit Apr. 21, 1981
4262760 Reamer-stabilizer Apr. 21, 1981
4260202 Bearing assembly Apr. 7, 1981
4256193 Rotary drill bit with rotary cutter Mar. 17, 1981
4252330 Symmetrical seal for a rolling cone cutter earth boring bit Feb. 24, 1981
4244908 Cure-in-place process for seals Jan. 13, 1981
4244430 Earth boring bit packed lubrication system Jan. 13, 1981
4236764 Earth boring drill bit with snap ring cutter retention Dec. 2, 1980
4235295 Earth boring bit with renewable bearing surface Nov. 25, 1980
4214764 Axial-type sealing device arranged to provide the seal between a stationary and a rotatable element Jul. 29, 1980
4209890 Method of making a rotary rock bit with seal recess washer Jul. 1, 1980
4199156 Sealing ring for drilling tool cutters Apr. 22, 1980
4199201 Bearing assembly with adjustable lock nut Apr. 22, 1980
4193463 Drilling bit fluid-cooled friction bearing Mar. 18, 1980
4190301 Axial bearing for a roller drill bit Feb. 26, 1980
4183416 Cutter actuated rock bit lubrication system Jan. 15, 1980
4182425 Reamer Jan. 8, 1980
4179003 Seal for a rolling cone cutter earth boring bit Dec. 18, 1979
4176848 Rotary bearing seal for drill bits Dec. 4, 1979
4176724 Rotary rock bit and method of making same Dec. 4, 1979
4161223 Pressure relief valve for rock bits Jul. 17, 1979
4157122 Rotary earth boring drill and method of assembly thereof Jun. 5, 1979
4102419 Rolling cutter drill bit with annular seal rings Jul. 25, 1978
4098358 Drill bit with hard-faced bearing surfaces Jul. 4, 1978
4096917 Earth drilling knobby bit Jun. 27, 1978
4092054 Seal arrangement for rolling cutter May. 30, 1978
T970002 Cutting elements for drill bits May. 2, 1978
4054426 Thin film treated drilling bit cones Oct. 18, 1977
4037673 Roller cutter drill bit Jul. 26, 1977
4029368 Radial bearings Jun. 14, 1977
4014595 Drill bit with seal ring compensator Mar. 29, 1977
4000783 Conical boring tool Jan. 4, 1977
3998283 Earth boring auger Dec. 21, 1976
3990525 Sealing system for a rotary rock bit Nov. 9, 1976
3982595 ROCK BORING CUTTER WITH REPLACEABLE CUTTING ELEMENTS Sep. 28, 1976
3964554 Temperature-regulated, sealed bearing system for rock drill bits Jun. 22, 1976

1 2 3 4 5 6










 
 
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