BE389032A - - Google Patents
Info
- Publication number
- BE389032A BE389032A BE389032DA BE389032A BE 389032 A BE389032 A BE 389032A BE 389032D A BE389032D A BE 389032DA BE 389032 A BE389032 A BE 389032A
- Authority
- BE
- Belgium
- Prior art keywords
- ratchet wheel
- rotating part
- motor
- pawls
- support
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000009527 percussion Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 230000001012 protector Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000979 retarding effect 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
- E21B19/081—Screw-and-nut feed mechanisms
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)
- Percussive Tools And Related Accessories (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE389032A true BE389032A (enrdf_load_stackoverflow) |
Family
ID=57217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE389032D BE389032A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE389032A (enrdf_load_stackoverflow) |
-
0
- BE BE389032D patent/BE389032A/fr unknown
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