DE245351C - - Google Patents
Info
- Publication number
- DE245351C DE245351C DENDAT245351D DE245351DA DE245351C DE 245351 C DE245351 C DE 245351C DE NDAT245351 D DENDAT245351 D DE NDAT245351D DE 245351D A DE245351D A DE 245351DA DE 245351 C DE245351 C DE 245351C
- Authority
- DE
- Germany
- Prior art keywords
- cylinder
- hammer
- housing
- valve
- pressure medium
- 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
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008439 repair process Effects 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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)
- Endoscopes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE245351C true DE245351C (OSRAM) |
Family
ID=504314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT245351D Active DE245351C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE245351C (OSRAM) |
-
0
- DE DENDAT245351D patent/DE245351C/de active Active
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