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Class Information
Number: 175/406
Name: Boring or penetrating the earth > Bit or bit element > Noncutting portion forwardly of cutting portion (e.g., reamer)
Description: Apparatus in which the cutter element or cutting edge is carried on a bit which has a portion extending inwardly towards the axis of the bit and forwardly of the cutter element or cutting edge in the direction of boring and which has no cutting function.










Sub-classes under this class:

Class Number Class Name Patents
175/407 Impact type 14


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8657038 Expandable reamer apparatus including stabilizers Feb. 25, 2014
8640792 Flexible directional drilling apparatus and related methods Feb. 4, 2014
8607900 Downhole tool engaging a tubing string between a drill bit and tubular for reaming a wellbore Dec. 17, 2013
8606552 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk Dec. 10, 2013
8579050 Reamer with balanced cutting structure for use in a wellbore Nov. 12, 2013
8464813 Cutter assembly for a raise boring reamer Jun. 18, 2013
8459375 Tools for use in drilling or enlarging well bores having expandable structures and methods of making and using such tools Jun. 11, 2013
8448724 Hole opener with hybrid reaming section May. 28, 2013
8397838 Rotary roller reamer Mar. 19, 2013
8365841 Sectional back reamer apparatus and method for horizontal directional drilling Feb. 5, 2013
8365843 Downhole tool actuation Feb. 5, 2013
8347989 Hole opener with hybrid reaming section and method of making Jan. 8, 2013
8302709 Downhole tool leg retention methods and apparatus Nov. 6, 2012
8297381 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods Oct. 30, 2012
8296115 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk Oct. 23, 2012
8281876 Reamers and methods for directional drilling Oct. 9, 2012
8256536 Backreamer for a tunneling apparatus Sep. 4, 2012
8215418 Expandable reamer apparatus and related methods Jul. 10, 2012
8201647 Earth drilling reamer with replaceable blades Jun. 19, 2012
8196679 Expandable reamers for subterranean drilling and related methods Jun. 12, 2012
8177000 Modular system for a back reamer and method May. 15, 2012
8162081 Force balanced asymmetric drilling reamer and methods for force balancing Apr. 24, 2012
8146682 Apparatus and methods of milling a restricted casing shoe Apr. 3, 2012
8074741 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake Dec. 13, 2011
8047304 Expandable reamer for subterranean boreholes and methods of use Nov. 1, 2011
8042625 Drilling tool Oct. 25, 2011
8020635 Expandable reamer apparatus Sep. 20, 2011
7963348 Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole Jun. 21, 2011
7958951 Method for assembling an underreaming tool Jun. 14, 2011
7958950 Reamer and methods for directional drilling Jun. 14, 2011
7954564 Placement of cutting elements on secondary cutting structures of drilling tool assemblies Jun. 7, 2011
7938204 Reamer with improved hydraulics for use in a wellbore May. 10, 2011
7861802 Flexible directional drilling apparatus and method Jan. 4, 2011
7775303 Device for a drilling tool Aug. 17, 2010
7730969 Reamer and methods for directional drilling Jun. 8, 2010
7726415 Fixed cutter drill bit Jun. 1, 2010
7721823 Moveable blades and bearing pads May. 25, 2010
7699123 Bore hole sleeve reaming apparatus and method Apr. 20, 2010
7681666 Expandable reamer for subterranean boreholes and methods of use Mar. 23, 2010
7665550 Underreamer and method of use Feb. 23, 2010
7661490 Stabilizing system and methods for a drill bit Feb. 16, 2010
7658241 Underreaming and stabilizing tool and method for its use Feb. 9, 2010
7654342 Underreaming and stabilization tool for use in a borehole and method for its use Feb. 2, 2010
7621351 Reaming tool suitable for running on casing or liner Nov. 24, 2009
7594552 Expandable reamer apparatus for enlarging boreholes while drilling Sep. 29, 2009
7549485 Expandable reamer apparatus for enlarging subterranean boreholes and methods of use Jun. 23, 2009
7513318 Steerable underreamer/stabilizer assembly and method Apr. 7, 2009
7451836 Advanced expandable reaming tool Nov. 18, 2008
7451837 Advanced expandable reaming tool Nov. 18, 2008
7416036 Latchable reaming bit Aug. 26, 2008

1 2 3










 
 
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