BE723897A - - Google Patents
Info
- Publication number
- BE723897A BE723897A BE723897DA BE723897A BE 723897 A BE723897 A BE 723897A BE 723897D A BE723897D A BE 723897DA BE 723897 A BE723897 A BE 723897A
- 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
- E21B3/025—Surface drives for rotary drilling with a to-and-fro rotation of the tool
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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR128949A FR1545076A (fr) | 1967-11-21 | 1967-11-21 | Perfectionnements aux tubeuses pour pieux forés |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE723897A true BE723897A (fr) | 1969-04-16 |
Family
ID=8641991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE723897D BE723897A (fr) | 1967-11-21 | 1968-11-14 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE723897A (fr) |
| CH (1) | CH492834A (fr) |
| FR (1) | FR1545076A (fr) |
| GB (1) | GB1251050A (fr) |
| LU (1) | LU57308A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412659A1 (de) * | 1983-06-27 | 1985-01-17 | Jürgen Ing.(grad.) 6600 Saarbrücken Hochstrasser | Wechselweise in entgegengesetzten richtungen arbeitende drehvorrichtung zur erleichterung des eintreibens oder herausziehens von vortreibrohren |
-
1967
- 1967-11-21 FR FR128949A patent/FR1545076A/fr not_active Expired
-
1968
- 1968-11-13 LU LU57308D patent/LU57308A1/xx unknown
- 1968-11-14 BE BE723897D patent/BE723897A/xx unknown
- 1968-11-18 CH CH1720668A patent/CH492834A/fr not_active IP Right Cessation
- 1968-11-21 GB GB1251050D patent/GB1251050A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1545076A (fr) | 1968-11-08 |
| LU57308A1 (fr) | 1969-02-25 |
| CH492834A (fr) | 1970-06-30 |
| GB1251050A (fr) | 1971-10-27 |
| DE1809816A1 (de) | 1969-07-17 |