DE134927C - - Google Patents
Info
- Publication number
- DE134927C DE134927C DENDAT134927D DE134927DA DE134927C DE 134927 C DE134927 C DE 134927C DE NDAT134927 D DENDAT134927 D DE NDAT134927D DE 134927D A DE134927D A DE 134927DA DE 134927 C DE134927 C DE 134927C
- Authority
- DE
- Germany
- Prior art keywords
- barrier
- springs
- crank
- stroke
- linkage
- 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
- 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 |
|---|---|
| DE134927C true DE134927C (en, 2012) |
Family
ID=403009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT134927D Active DE134927C (en, 2012) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE134927C (en, 2012) |
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0
- DE DENDAT134927D patent/DE134927C/de active Active
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