DE139549C - - Google Patents
Info
- Publication number
- DE139549C DE139549C DENDAT139549D DE139549DA DE139549C DE 139549 C DE139549 C DE 139549C DE NDAT139549 D DENDAT139549 D DE NDAT139549D DE 139549D A DE139549D A DE 139549DA DE 139549 C DE139549 C DE 139549C
- Authority
- DE
- Germany
- Prior art keywords
- grooves
- knives
- cutter head
- wedge
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Knives (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE139549C true DE139549C (enrdf_load_stackoverflow) |
Family
ID=407286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT139549D Active DE139549C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE139549C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT139549D patent/DE139549C/de active Active
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