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Class Information
Number: 175/331
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element
Description: Apparatus comprising a rotary bit in which a cutter element or carrier for a fixed cutter is rotatably mounted thereon so that the cutter element or carrier may roll or tend to roll on a surface of the bore as the bit is rotated.










Sub-classes under this class:

Class Number Class Name Patents
175/342 Adjustable cutter element 10
175/354 Axle rotatable with cutter 29
175/334 Bit with leading cutter forming smaller diameter initial bore 32
175/355 Circumferentially displaced cutter axes 14
175/332 Core forming-type bit 12
175/360 Cross axle with stub axle 1
175/361 Cross axle 11
175/367 Detachable stub axle, bushing or bearing 17
175/373 Disk cutter 35
175/378 Irregular tooth cutter row 71
175/350 Laterally offset cutter axis 9
175/348 Longitudinal axis cutter 13
175/344 Noncutting portion forwardly of rolling cutter (e.g., reamer) 54
175/376 Nonsymmetrical bit (e.g., nontracking) 89
175/365 Outwardly directed stub axle 21
175/341 Plural rolling cutters with intermeshing teeth 44
175/336 Rolling cutter bit with fixed cutter 55
175/366 Separable support for stub axle 18
175/374 Specific or diverse material 375
175/377 Spiral rib or tooth row 20
175/369 Stub axle cutter securing means 31
175/371 With bearing or seal details 291
175/339 With drilling fluid conduit details 104
175/337 With drilling fluid supply to bearing 74
175/338 With rotary or endless carrier 8
175/343 Wobbling cutter 20


Patents under this class:
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Patent Number Title Of Patent Date Issued
6446739 Rock drill bit with neck protection Sep. 10, 2002
6443246 Long barrel inserts for earth-boring bit Sep. 3, 2002
6390210 Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty May. 21, 2002
6367568 Steel tooth cutter element with expanded crest Apr. 9, 2002
6347676 Tooth type drill bit with secondary cutting elements and stress reducing tooth geometry Feb. 19, 2002
6336512 Drill bit having canted seal Jan. 8, 2002
6253862 Earth-boring bit with cutter spear point hardfacing Jul. 3, 2001
6250407 Rotary drill bit having filling opening for the installation of cylindrical bearings Jun. 26, 2001
6241034 Cutter element with expanded crest geometry Jun. 5, 2001
6227314 Inclined leg earth-boring bit May. 8, 2001
6213225 Force-balanced roller-cone bits, systems, drilling methods, and design methods Apr. 10, 2001
6209668 Earth-boring bit with improved cutting structure Apr. 3, 2001
6196338 Hardfacing rock bit cones for erosion protection Mar. 6, 2001
6173797 Rotary drill bits for directional drilling employing movable cutters and tandem gage pad arrangement with active cutting elements and having up-drill capability Jan. 16, 2001
6167975 One cone rotary drill bit featuring enhanced grooves Jan. 2, 2001
6164394 Drill bit with rows of cutters mounted to present a serrated cutting edge Dec. 26, 2000
6161634 Cutter element with non-rectilinear crest Dec. 19, 2000
6145605 Rotary drill bit and roller cutter for rock drilling Nov. 14, 2000
6095264 Rolling cutter drill bit with stabilized insert holes and method for making a rolling cutter drill bit with stabilized insert holes Aug. 1, 2000
6053263 Cutting element tip configuration for an earth-boring bit Apr. 25, 2000
5868213 Steel tooth cutter element with gage facing knee Feb. 9, 1999
5839525 Directional drill bit Nov. 24, 1998
5833020 Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty Nov. 10, 1998
5755297 Rotary cone drill bit with integral stabilizers May. 26, 1998
5697461 Rotary drill bit having a non-rotating gauge section Dec. 16, 1997
5695018 Earth-boring bit with negative offset and inverted gage cutting elements Dec. 9, 1997
5636700 Roller cone rock bit having improved cutter gauge face surface compacts and a method of construction Jun. 10, 1997
5595255 Rotary cone drill bit with improved support arms Jan. 21, 1997
5547033 Rotary cone drill bit and method for enhanced lifting of fluids and cuttings Aug. 20, 1996
5415243 Rock bit borhole back reaming method May. 16, 1995
5407022 Free cutting gage insert with relief angle Apr. 18, 1995
5346026 Rolling cone bit with shear cutting gage Sep. 13, 1994
5307886 Method for casing a hole drilled in a formation May. 3, 1994
5287936 Rolling cone bit with shear cutting gage Feb. 22, 1994
5145016 Rock bit with reaming rows Sep. 8, 1992
4889194 Method and a device for deep hole drilling Dec. 26, 1989
4709462 Method for assembling a well drilling tool Dec. 1, 1987
4641718 Rotary drill bit Feb. 10, 1987
4627501 Borer head with planetary gearing Dec. 9, 1986
4624329 Rotating cutter drill set Nov. 25, 1986
4610317 Spherical bit Sep. 9, 1986
4595067 Rotary drill bit, parts therefor, and method of manufacturing thereof Jun. 17, 1986
4541494 Drill bit assembly Sep. 17, 1985
4431066 Stressed relieved bit leg for an earth boring bit Feb. 14, 1984
D262630 Drill bit Jan. 12, 1982
4241798 Drilling bits for plastic formations Dec. 30, 1980
3967854 Endless bucket type excavator Jul. 6, 1976
3935911 Earth boring bit with means for conducting heat from the bit's bearings Feb. 3, 1976

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