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Class Information
Number: 175/408
Name: Boring or penetrating the earth > Bit or bit element > With bit guide or bore wall compacting device
Description: Apparatus provided with (1) means on the bit for centralizing or stabilizing the bit in the bore or (2) a device to smooth or compress together the material which makes up the wall surface of the bore.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8531824 Housing for encasing an object having a headphone port Sep. 10, 2013
8499834 Milling tool for establishing openings in wellbore obstructions Aug. 6, 2013
8479846 Earth-boring tools including an impact material and methods of drilling through casing Jul. 9, 2013
8459382 Rotary drill bits including bearing blocks Jun. 11, 2013
8360174 Lead the bit rotary steerable tool Jan. 29, 2013
8356679 Rotary drill bit with gage pads having improved steerability and reduced wear Jan. 22, 2013
8327951 Drill bit having functional articulation to drill boreholes in earth formations in all directions Dec. 11, 2012
8302703 Method and apparatus for hydraulic steering of downhole rotary drilling systems Nov. 6, 2012
8296115 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk Oct. 23, 2012
8240399 Drill bit with an adjustable steering device Aug. 14, 2012
8230952 Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools Jul. 31, 2012
8205686 Drill bit with adjustable axial pad for controlling torsional fluctuations Jun. 26, 2012
8172010 Rotary drill bit steerable system and method May. 8, 2012
8087479 Drill bit with an adjustable steering device Jan. 3, 2012
8051923 Rotary drill bits with gage pads having improved steerability and reduced wear Nov. 8, 2011
7971662 Drill bit with adjustable steering pads Jul. 5, 2011
7971661 Motor bit system Jul. 5, 2011
7967083 Sensor for determining a position of a jack element Jun. 28, 2011
7926596 Drag bit with utility blades Apr. 19, 2011
7849939 Drill bit Dec. 14, 2010
7849940 Drill bit having the ability to drill vertically and laterally Dec. 14, 2010
7814997 Interchangeable bearing blocks for drill bits, and drill bits including same Oct. 19, 2010
7798256 Fixed cutter drill bit for abrasive applications Sep. 21, 2010
7753144 Drill bit with a retained jack element Jul. 13, 2010
7661490 Stabilizing system and methods for a drill bit Feb. 16, 2010
7658242 Hole coring system with lever arm Feb. 9, 2010
7484578 Hole coring system Feb. 3, 2009
7341119 Hydro-lifter rock bit with PDC inserts Mar. 11, 2008
7188690 Drilling device and method for producing undercut holes Mar. 13, 2007
6971459 Stabilizing system and methods for a drill bit Dec. 6, 2005
6883623 Earth boring apparatus and method offering improved gage trimmer protection Apr. 26, 2005
6851489 Method and apparatus for drilling wells Feb. 8, 2005
6688410 Hydro-lifter rock bit with PDC inserts Feb. 10, 2004
6684967 Side cutting gage pad improving stabilization and borehole integrity Feb. 3, 2004
6615935 Roller cone bits with wear and fracture resistant surface Sep. 9, 2003
6607047 Earth-boring bit with wear-resistant shirttail Aug. 19, 2003
6568492 Drag-type casing mill/drill bit May. 27, 2003
6427792 Active gauge cutting structure for earth boring drill bits Aug. 6, 2002
6394200 Drillout bi-center bit May. 28, 2002
6349780 Drill bit with selectively-aggressive gage pads Feb. 26, 2002
6321862 Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability Nov. 27, 2001
6302223 Rotary drag bit with enhanced hydraulic and stabilization characteristics Oct. 16, 2001
6290007 Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability Sep. 18, 2001
6260636 Rotary-type earth boring drill bit, modular bearing pads therefor and methods Jul. 17, 2001
6253863 Side cutting gage pad improving stabilization and borehole integrity Jul. 3, 2001
6234261 Method of applying a wear-resistant layer to a surface of a downhole component May. 22, 2001
6206117 Drilling structure with non-axial gage Mar. 27, 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
6138780 Drag bit with steel shank and tandem gage pads Oct. 31, 2000
6123160 Drill bit with gage definition region Sep. 26, 2000

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