| |
 |
|
Class Information
Number: 175/405.1
Name: Boring or penetrating the earth > Bit or bit element > Core forming type > Includes diamond
Description: Apparatus in which the cutter element or cutting edge of the bit contains the very hard crystalline form of the element carbon.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7341120 |
Blade edge structure for core drill |
Mar. 11, 2008 |
| 7278499 |
Rotary drag bit including a central region having a plurality of cutting structures |
Oct. 9, 2007 |
| 7258179 |
Rotary bit with an indenting member |
Aug. 21, 2007 |
| 6595844 |
Outer-diameter blade, inner-diameter blade, core drill and processing machines using same ones |
Jul. 22, 2003 |
| 6474425 |
Asymmetric diamond impregnated drill bit |
Nov. 5, 2002 |
| 6283233 |
Drilling and/or coring tool |
Sep. 4, 2001 |
| 5823276 |
Diamond-tipped core barrel and method of using same |
Oct. 20, 1998 |
| 5655614 |
Self-centering polycrystalline diamond cutting rock bit |
Aug. 12, 1997 |
| 5568838 |
Bit-stabilized combination coring and drilling system |
Oct. 29, 1996 |
| 5505272 |
Drill bits |
Apr. 9, 1996 |
| 5460230 |
Core bit |
Oct. 24, 1995 |
| 5025871 |
Drilling method and rotary drill bit crown |
Jun. 25, 1991 |
| 5015128 |
Rotary drill apparatus |
May. 14, 1991 |
| 4981183 |
Apparatus for taking core samples |
Jan. 1, 1991 |
| 4907663 |
Drilling tool |
Mar. 13, 1990 |
| 4760888 |
Drill bit for core boring |
Aug. 2, 1988 |
| 4723868 |
Apparatus for installing circular traffic loops |
Feb. 9, 1988 |
| 4681174 |
Diamond crown bit |
Jul. 21, 1987 |
| 4667755 |
Drill bit having hollow cylindrical body and a plurality of PCD cutting elements |
May. 26, 1987 |
| 4657445 |
Core drill and method of removing a core therefrom |
Apr. 14, 1987 |
| 4640374 |
Rotary drill bit |
Feb. 3, 1987 |
| 4630692 |
Consolidation of a drilling element from separate metallic components |
Dec. 23, 1986 |
| 4552231 |
Rotating pilot core bit for use in highly fractured formations |
Nov. 12, 1985 |
| 4551045 |
Countersink core drill assembly and method of utilizing same |
Nov. 5, 1985 |
| 4538691 |
Rotary drill bit |
Sep. 3, 1985 |
| 4534773 |
Abrasive product and method for manufacturing |
Aug. 13, 1985 |
| 4499959 |
Tooth configuration for an earth boring bit |
Feb. 19, 1985 |
| 4352400 |
Drill bit |
Oct. 5, 1982 |
| 4281722 |
Retractable bit system |
Aug. 4, 1981 |
| 4274769 |
Impregnated diamond drill bit construction |
Jun. 23, 1981 |
| 4211294 |
Impregnated diamond drill bit |
Jul. 8, 1980 |
| 4208154 |
Core drill |
Jun. 17, 1980 |
| 4207954 |
Core bit having axial conical core breaker |
Jun. 17, 1980 |
| 4189015 |
Drill bits for obtaining core samples |
Feb. 19, 1980 |
| 4128136 |
Drill bit |
Dec. 5, 1978 |
| 4056152 |
Drill bit for reinforced concrete |
Nov. 1, 1977 |
| 4006788 |
Diamond cutter rock bit with penetration limiting |
Feb. 8, 1977 |
|
|
|
