DE290973C - - Google Patents
Info
- Publication number
- DE290973C DE290973C DENDAT290973D DE290973DA DE290973C DE 290973 C DE290973 C DE 290973C DE NDAT290973 D DENDAT290973 D DE NDAT290973D DE 290973D A DE290973D A DE 290973DA DE 290973 C DE290973 C DE 290973C
- Authority
- DE
- Germany
- Prior art keywords
- grippers
- threaded spindle
- gripper
- lifting device
- funnel
- 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
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002184 metal 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (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 |
|---|---|
| DE290973C true DE290973C (cs) |
Family
ID=545888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT290973D Active DE290973C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE290973C (cs) |
-
0
- DE DENDAT290973D patent/DE290973C/de active Active
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