DE309937C - - Google Patents
Info
- Publication number
- DE309937C DE309937C DENDAT309937D DE309937DA DE309937C DE 309937 C DE309937 C DE 309937C DE NDAT309937 D DENDAT309937 D DE NDAT309937D DE 309937D A DE309937D A DE 309937DA DE 309937 C DE309937 C DE 309937C
- Authority
- DE
- Germany
- Prior art keywords
- bolts
- slots
- knives
- drill head
- knife
- 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
- 238000005553 drilling Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001507636 Yersinia phage Berlin Species 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010959 steel Substances 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE309937C true DE309937C (nl) |
Family
ID=563068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT309937D Active DE309937C (nl) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE309937C (nl) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE865426C (de) * | 1947-05-12 | 1953-02-02 | Sonapar | Steinbohrer und Vorrichtung zu seiner Anwendung |
-
0
- DE DENDAT309937D patent/DE309937C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE865426C (de) * | 1947-05-12 | 1953-02-02 | Sonapar | Steinbohrer und Vorrichtung zu seiner Anwendung |
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