BE481890A - - Google Patents
Info
- Publication number
- BE481890A BE481890A BE481890DA BE481890A BE 481890 A BE481890 A BE 481890A BE 481890D A BE481890D A BE 481890DA BE 481890 A BE481890 A BE 481890A
- Authority
- BE
- Belgium
- Prior art keywords
- screw
- tool
- nut
- crown
- motor
- Prior art date
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Forests & Forestry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Boring (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE481890A true BE481890A (cs) |
Family
ID=128734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE481890D BE481890A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE481890A (cs) |
-
0
- BE BE481890D patent/BE481890A/fr unknown
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