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Class Information
Number: 175/404
Name: Boring or penetrating the earth > Bit or bit element > Core forming type > With core-breaking means
Description: Apparatus in which the bit is further provided with means to disintegrate the undisturbed cylindrical portion of the formation after it has been formed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7328755 |
Hydraulic drill bit assembly |
Feb. 12, 2008 |
| 7258179 |
Rotary bit with an indenting member |
Aug. 21, 2007 |
| 7225886 |
Drill bit assembly with an indenting member |
Jun. 5, 2007 |
| 7198119 |
Hydraulic drill bit assembly |
Apr. 3, 2007 |
| 7055626 |
Core bit having features for controlling flow split |
Jun. 6, 2006 |
| 6637521 |
Earth borer |
Oct. 28, 2003 |
| 6401840 |
Method of extracting and testing a core from a subterranean formation |
Jun. 11, 2002 |
| 6267179 |
Method and apparatus for accurate milling of windows in well casings |
Jul. 31, 2001 |
| 6158534 |
Core sampler |
Dec. 12, 2000 |
| 5957221 |
Downhole core sampling and testing apparatus |
Sep. 28, 1999 |
| 5901797 |
Drilling apparatus with dynamic cuttings removal and cleaning |
May. 11, 1999 |
| 5791424 |
Drill bit for the rotary-percussive drilling of preferably rock, concrete or the like |
Aug. 11, 1998 |
| 5655614 |
Self-centering polycrystalline diamond cutting rock bit |
Aug. 12, 1997 |
| 5360260 |
Tunneling machine with radially sweeping tool carriers |
Nov. 1, 1994 |
| 5176212 |
Combination drill bit |
Jan. 5, 1993 |
| 5145017 |
Kerf-cutting apparatus for increased drilling rates |
Sep. 8, 1992 |
| 5038870 |
Ice auger cutter |
Aug. 13, 1991 |
| 5031708 |
Cockable corebreaker apparatus |
Jul. 16, 1991 |
| 5016718 |
Combination drill bit |
May. 21, 1991 |
| 4907659 |
Powered soil-sampler |
Mar. 13, 1990 |
| 4858706 |
Diamond drill bit with hemispherically shaped diamond inserts |
Aug. 22, 1989 |
| 4854788 |
Drill |
Aug. 8, 1989 |
| 4825963 |
High-pressure waterjet/abrasive particle-jet coring method and apparatus |
May. 2, 1989 |
| 4694916 |
Continuous coring drill bit |
Sep. 22, 1987 |
| 4685339 |
Soil sample taker and vehicle mounting arrangement |
Aug. 11, 1987 |
| 4657445 |
Core drill and method of removing a core therefrom |
Apr. 14, 1987 |
| 4640374 |
Rotary drill bit |
Feb. 3, 1987 |
| 4538691 |
Rotary drill bit |
Sep. 3, 1985 |
| 4535853 |
Drill bit for jet assisted rotary drilling |
Aug. 20, 1985 |
| 4534231 |
Method and device for taking soil samples |
Aug. 13, 1985 |
| 4445580 |
Deep hole rock drill bit |
May. 1, 1984 |
| 4352400 |
Drill bit |
Oct. 5, 1982 |
| 4324300 |
Rotary drill bit |
Apr. 13, 1982 |
| D262630 |
Drill bit |
Jan. 12, 1982 |
| 4280573 |
Rock-breaking tool for percussive-action machines |
Jul. 28, 1981 |
| 4258808 |
Rock drill |
Mar. 31, 1981 |
| 4244626 |
Rotary cutter for gouging out ore from mine faces or the like |
Jan. 13, 1981 |
| 4234048 |
Drill bits embodying impregnated segments |
Nov. 18, 1980 |
| 4230193 |
Rotary drill bit |
Oct. 28, 1980 |
| 4230191 |
Machine for making underground excavations |
Oct. 28, 1980 |
| 4228862 |
Apparatus for drilling holes in the ground |
Oct. 21, 1980 |
| 4207954 |
Core bit having axial conical core breaker |
Jun. 17, 1980 |
| 4130170 |
Probe for use in geological surveys |
Dec. 19, 1978 |
| 4078622 |
Road surface recessing device |
Mar. 14, 1978 |
| 4016942 |
Method and apparatus for indicating the position of one well bore with respect to a second well bore |
Apr. 12, 1977 |
| 3982596 |
Drill bit |
Sep. 28, 1976 |
| 3951220 |
Archimedes spiral drill bit |
Apr. 20, 1976 |
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