DE206295C - - Google Patents
Info
- Publication number
- DE206295C DE206295C DENDAT206295D DE206295DA DE206295C DE 206295 C DE206295 C DE 206295C DE NDAT206295 D DENDAT206295 D DE NDAT206295D DE 206295D A DE206295D A DE 206295DA DE 206295 C DE206295 C DE 206295C
- Authority
- DE
- Germany
- Prior art keywords
- linkage
- attached
- elastic
- counterweights
- notch
- 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)
- Handcart (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE206295C true DE206295C (https=) |
Family
ID=468472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT206295D Active DE206295C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE206295C (https=) |
-
0
- DE DENDAT206295D patent/DE206295C/de active Active
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