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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7389829 |
Method and apparatus for forming bored hole |
Jun. 24, 2008 |
| 7325630 |
Hole opener |
Feb. 5, 2008 |
| 7316277 |
Bottom hole assembly |
Jan. 8, 2008 |
| 7293617 |
Polycrystaline diamond compact insert reaming tool |
Nov. 13, 2007 |
| 7252163 |
Downhole under-reamer tool |
Aug. 7, 2007 |
| 7237628 |
Fixed cutter drill bit with non-cutting erosion resistant inserts |
Jul. 3, 2007 |
| 7201237 |
Stabilizing system and methods for a drill bit |
Apr. 10, 2007 |
| 7195080 |
Expandable drilling tool and method |
Mar. 27, 2007 |
| 7182157 |
Enlarging well bores having tubing therein |
Feb. 27, 2007 |
| 7152702 |
Modular system for a back reamer and method |
Dec. 26, 2006 |
| 7137463 |
Polycrystaline diamond compact insert reaming tool |
Nov. 21, 2006 |
| 7137460 |
Back reaming tool |
Nov. 21, 2006 |
| 7128168 |
Reamer apparatus for ground boring machine |
Oct. 31, 2006 |
| 7111694 |
Fixed blade fixed cutter hole opener |
Sep. 26, 2006 |
| 7090034 |
Reamer having toroidal crusher body and method of use |
Aug. 15, 2006 |
| 7083010 |
Apparatus and method for drilling and reaming a borehole |
Aug. 1, 2006 |
| 7048078 |
Expandable underreamer/stabilizer |
May. 23, 2006 |
| 7036611 |
Expandable reamer apparatus for enlarging boreholes while drilling and methods of use |
May. 2, 2006 |
| 7000713 |
Blockless reamer |
Feb. 21, 2006 |
| 6971459 |
Stabilizing system and methods for a drill bit |
Dec. 6, 2005 |
| 6959774 |
Drilling apparatus |
Nov. 1, 2005 |
| 6929078 |
Apparatus for use in enlarging a borehole |
Aug. 16, 2005 |
| 6926100 |
Hole reaming apparatus and method |
Aug. 9, 2005 |
| 6920944 |
Apparatus and method for drilling and reaming a borehole |
Jul. 26, 2005 |
| 6880650 |
Advanced expandable reaming tool |
Apr. 19, 2005 |
| 6732817 |
Expandable underreamer/stabilizer |
May. 11, 2004 |
| 6729418 |
Back reaming tool |
May. 4, 2004 |
| 6609580 |
Polycrystalline diamond compact insert reaming tool |
Aug. 26, 2003 |
| 6561286 |
Well bore reamer and method |
May. 13, 2003 |
| 6494272 |
Drilling system utilizing eccentric adjustable diameter blade stabilizer and winged reamer |
Dec. 17, 2002 |
| 6484822 |
Cutting structure for earth boring drill bits |
Nov. 26, 2002 |
| 6484825 |
Cutting structure for earth boring drill bits |
Nov. 26, 2002 |
| 6386302 |
Polycrystaline diamond compact insert reaming tool |
May. 14, 2002 |
| 6386298 |
Apparatus for directional drilling |
May. 14, 2002 |
| 6321862 |
Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
Nov. 27, 2001 |
| 6234261 |
Method of applying a wear-resistant layer to a surface of a downhole component |
May. 22, 2001 |
| 6202768 |
Rock drilling tool and reamer for percussive drilling |
Mar. 20, 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 |
| 6167917 |
Drill pipe |
Jan. 2, 2001 |
| 6123160 |
Drill bit with gage definition region |
Sep. 26, 2000 |
| 6116357 |
Rock drill bit with back-reaming protection |
Sep. 12, 2000 |
| 6112836 |
Rotary drill bits employing tandem gage pad arrangement |
Sep. 5, 2000 |
| 6059051 |
Integrated directional under-reamer and stabilizer |
May. 9, 2000 |
| 6039130 |
Square drill collar featuring offset mass and cutter |
Mar. 21, 2000 |
| 6006845 |
Rotary drill bits for directional drilling employing tandem gage pad arrangement with reaming capability |
Dec. 28, 1999 |
| 5967247 |
Steerable rotary drag bit with longitudinally variable gage aggressiveness |
Oct. 19, 1999 |
| 5921331 |
Backreamer |
Jul. 13, 1999 |
| 5853054 |
2-Stage underreamer |
Dec. 29, 1998 |
| 5778992 |
Drilling assembly for drilling holes in subsurface formations |
Jul. 14, 1998 |
| 5687805 |
Back reamer apparatus |
Nov. 18, 1997 |
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