DE292020C - - Google Patents
Info
- Publication number
- DE292020C DE292020C DENDAT292020D DE292020DA DE292020C DE 292020 C DE292020 C DE 292020C DE NDAT292020 D DENDAT292020 D DE NDAT292020D DE 292020D A DE292020D A DE 292020DA DE 292020 C DE292020 C DE 292020C
- Authority
- DE
- Germany
- Prior art keywords
- nuts
- spindle
- pipe
- pipes
- pairs
- 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
- 241000488982 Monotropa uniflora Species 0.000 claims 1
- 241000947840 Alteromonadales Species 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002689 soil 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
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE292020C true DE292020C (forum.php) |
Family
ID=546842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT292020D Active DE292020C (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE292020C (forum.php) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487902A (en) * | 1947-11-20 | 1949-11-15 | Norman L Stout | Liner puller |
| US2778671A (en) * | 1952-04-24 | 1957-01-22 | Gladstone H Langston | Pipe handling device |
| DE1212005B (de) * | 1960-03-21 | 1966-03-03 | Heinz Staunau | In einem Vortreibrohr zum Herstellen von Ortbeton-Rammpfaehlen festklemmbare Sperrvorrichtung |
-
0
- DE DENDAT292020D patent/DE292020C/de active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487902A (en) * | 1947-11-20 | 1949-11-15 | Norman L Stout | Liner puller |
| US2778671A (en) * | 1952-04-24 | 1957-01-22 | Gladstone H Langston | Pipe handling device |
| DE1212005B (de) * | 1960-03-21 | 1966-03-03 | Heinz Staunau | In einem Vortreibrohr zum Herstellen von Ortbeton-Rammpfaehlen festklemmbare Sperrvorrichtung |
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