DE280675C - - Google Patents
Info
- Publication number
- DE280675C DE280675C DENDAT280675D DE280675DA DE280675C DE 280675 C DE280675 C DE 280675C DE NDAT280675 D DENDAT280675 D DE NDAT280675D DE 280675D A DE280675D A DE 280675DA DE 280675 C DE280675 C DE 280675C
- Authority
- DE
- Germany
- Prior art keywords
- sleeve
- blades
- knives
- knife
- wall
- 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
- 239000011435 rock Substances 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003801 milling Methods 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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
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)
- Drilling Tools (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE280675C true DE280675C (enrdf_load_stackoverflow) |
Family
ID=536487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT280675D Active DE280675C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE280675C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT280675D patent/DE280675C/de active Active
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