BE480737A - - Google Patents
Info
- Publication number
- BE480737A BE480737A BE480737DA BE480737A BE 480737 A BE480737 A BE 480737A BE 480737D A BE480737D A BE 480737DA BE 480737 A BE480737 A BE 480737A
- 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)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US634139XA | 1946-03-08 | 1946-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE480737A true BE480737A (el) |
Family
ID=22049031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE480737D BE480737A (el) | 1946-03-08 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE480737A (el) |
| FR (1) | FR961918A (el) |
| GB (1) | GB634139A (el) |
-
0
- FR FR961918D patent/FR961918A/fr not_active Expired
- BE BE480737D patent/BE480737A/xx unknown
-
1948
- 1948-02-06 GB GB3589/48A patent/GB634139A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR961918A (el) | 1950-05-25 |
| GB634139A (en) | 1950-03-15 |