BE416894A - - Google Patents
Info
- Publication number
- BE416894A BE416894A BE416894DA BE416894A BE 416894 A BE416894 A BE 416894A BE 416894D A BE416894D A BE 416894DA BE 416894 A BE416894 A BE 416894A
- Authority
- BE
- Belgium
- Prior art keywords
- piston
- valve
- plungers
- ratchet
- chamber
- Prior art date
Links
- 230000002441 reversible effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009987 spinning Methods 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE416894A true BE416894A (OSRAM) |
Family
ID=79714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE416894D BE416894A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE416894A (OSRAM) |
-
0
- BE BE416894D patent/BE416894A/fr unknown
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