DE224531C - - Google Patents
Info
- Publication number
- DE224531C DE224531C DENDAT224531D DE224531DA DE224531C DE 224531 C DE224531 C DE 224531C DE NDAT224531 D DENDAT224531 D DE NDAT224531D DE 224531D A DE224531D A DE 224531DA DE 224531 C DE224531 C DE 224531C
- Authority
- DE
- Germany
- Prior art keywords
- rollers
- rope
- springs
- roller
- axis
- 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
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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE224531C true DE224531C (forum.php) |
Family
ID=485257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT224531D Active DE224531C (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE224531C (forum.php) |
-
0
- DE DENDAT224531D patent/DE224531C/de active Active
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