DE141316C - - Google Patents
Info
- Publication number
- DE141316C DE141316C DENDAT141316D DE141316DA DE141316C DE 141316 C DE141316 C DE 141316C DE NDAT141316 D DENDAT141316 D DE NDAT141316D DE 141316D A DE141316D A DE 141316DA DE 141316 C DE141316 C DE 141316C
- Authority
- DE
- Germany
- Prior art keywords
- rollers
- barrier
- stroke
- crank
- frame
- 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
- 230000004888 barrier function Effects 0.000 claims description 11
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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
- E21B1/04—Devices for reversing the movement of the rod or cable at the surface
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 |
|---|---|
| DE141316C true DE141316C (enExample) |
Family
ID=408943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT141316D Active DE141316C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE141316C (enExample) |
-
0
- DE DENDAT141316D patent/DE141316C/de active Active
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