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Class Information
Number: 175/405
Name: Boring or penetrating the earth > Bit or bit element > Core forming type > Impact or percussion type
Description: Apparatus in which the cutting edge of the bit is of the type which is adapted to disintegrate the formation by a forceful contact or a repetitive striking action.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7207401 |
One trip milling system |
Apr. 24, 2007 |
| 6681875 |
Guide tube of a drill string configured to facilitate unscrewing thereof from a member of the drill string |
Jan. 27, 2004 |
| 6675919 |
Tubular piling apparatus and method |
Jan. 13, 2004 |
| 6585062 |
Steerable directional drilling reamer |
Jul. 1, 2003 |
| 6564887 |
Core drill |
May. 20, 2003 |
| 6439322 |
Downhole hammer-type core barrel and method of using same |
Aug. 27, 2002 |
| 6213230 |
Drilling tool especially for the rotary percussion drilling of preferably rock |
Apr. 10, 2001 |
| 6189630 |
Downhole hammer-type core barrel |
Feb. 20, 2001 |
| 6116827 |
Drilling tool |
Sep. 12, 2000 |
| 6035950 |
Method and apparatus for fluid and soil sampling |
Mar. 14, 2000 |
| 6000481 |
Method and apparatus for environmental sampling |
Dec. 14, 1999 |
| 5791424 |
Drill bit for the rotary-percussive drilling of preferably rock, concrete or the like |
Aug. 11, 1998 |
| 5743343 |
Method and apparatus for fluid and soil sampling |
Apr. 28, 1998 |
| 5421419 |
Method and apparatus for fluid and soil sampling |
Jun. 6, 1995 |
| 5186266 |
Multi-walled drill string for exploration-sampling drilling systems |
Feb. 16, 1993 |
| 4783123 |
Tool bit for impact ripping of a mine face |
Nov. 8, 1988 |
| 4702327 |
Core sample taking bullet construction |
Oct. 27, 1987 |
| 4569403 |
Formation sampling bullet |
Feb. 11, 1986 |
| 4526242 |
Drilling device |
Jul. 2, 1985 |
| 4369002 |
Method of emptying pipes driven into earth in nontrench laying and device for carrying same into effect |
Jan. 18, 1983 |
| 4321974 |
Annular drilling hammer |
Mar. 30, 1982 |
| 4280573 |
Rock-breaking tool for percussive-action machines |
Jul. 28, 1981 |
| 4202420 |
Rock drill with hard metal drilling head |
May. 13, 1980 |
| 4146098 |
Masonry cutting tool |
Mar. 27, 1979 |
| 4002214 |
Drilling tool, especially for hammer drills |
Jan. 11, 1977 |
| 3978932 |
Apparatus and method for obtaining undisturbed soil core samples |
Sep. 7, 1976 |
| 3977479 |
Geological exploration method and apparatus |
Aug. 31, 1976 |
| 3955631 |
Soil sampler |
May. 11, 1976 |
| 3934662 |
Core bit |
Jan. 27, 1976 |
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