BE475059A - - Google Patents
Info
- Publication number
- BE475059A BE475059A BE475059DA BE475059A BE 475059 A BE475059 A BE 475059A BE 475059D A BE475059D A BE 475059DA BE 475059 A BE475059 A BE 475059A
- Authority
- BE
- Belgium
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
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE966891X | 1947-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE475059A true BE475059A (nl) |
Family
ID=3890198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE475059D BE475059A (nl) | 1947-08-02 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE475059A (nl) |
| FR (1) | FR966891A (nl) |
-
0
- BE BE475059D patent/BE475059A/xx unknown
-
1948
- 1948-05-27 FR FR966891D patent/FR966891A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR966891A (fr) | 1950-10-20 |