DE211060C - - Google Patents
Info
- Publication number
- DE211060C DE211060C DENDAT211060D DE211060DA DE211060C DE 211060 C DE211060 C DE 211060C DE NDAT211060 D DENDAT211060 D DE NDAT211060D DE 211060D A DE211060D A DE 211060DA DE 211060 C DE211060 C DE 211060C
- Authority
- DE
- Germany
- Prior art keywords
- electromagnet
- rope
- moment
- armature
- pair
- 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 description 2
- 241000947840 Alteromonadales Species 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
- E21B1/00—Percussion drilling
- E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable
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 And Boring (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE211060C true DE211060C (cs) |
Family
ID=472899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT211060D Active DE211060C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE211060C (cs) |
-
0
- DE DENDAT211060D patent/DE211060C/de active Active
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