DE232873C - - Google Patents
Info
- Publication number
- DE232873C DE232873C DENDAT232873D DE232873DA DE232873C DE 232873 C DE232873 C DE 232873C DE NDAT232873 D DENDAT232873 D DE NDAT232873D DE 232873D A DE232873D A DE 232873DA DE 232873 C DE232873 C DE 232873C
- Authority
- DE
- Germany
- Prior art keywords
- bracket
- drill
- column
- clamping column
- hammer
- 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
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000011435 rock 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/006—Means for anchoring the drilling machine to the ground
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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE232873C true DE232873C (cs) |
Family
ID=492860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT232873D Active DE232873C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE232873C (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5053172A (en) * | 1987-10-19 | 1991-10-01 | Mitsubishi Denki Kabushiki Kaisha | Method of cleaning semiconductor molding apparatus |
-
0
- DE DENDAT232873D patent/DE232873C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5053172A (en) * | 1987-10-19 | 1991-10-01 | Mitsubishi Denki Kabushiki Kaisha | Method of cleaning semiconductor molding apparatus |
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