BE374712A - - Google Patents
Info
- Publication number
- BE374712A BE374712A BE374712DA BE374712A BE 374712 A BE374712 A BE 374712A BE 374712D A BE374712D A BE 374712DA BE 374712 A BE374712 A BE 374712A
- 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
- E21B19/083—Cam, rack or like 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US559912XA | 1930-03-11 | 1930-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE374712A true BE374712A (en:Method) |
Family
ID=22001426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE374712D BE374712A (en:Method) | 1930-03-11 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE374712A (en:Method) |
| DE (1) | DE559912C (en:Method) |
| FR (1) | FR704830A (en:Method) |
-
0
- BE BE374712D patent/BE374712A/xx unknown
-
1930
- 1930-10-31 FR FR704830D patent/FR704830A/fr not_active Expired
- 1930-11-06 DE DE1930559912D patent/DE559912C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE559912C (de) | 1932-09-26 |
| FR704830A (fr) | 1931-05-27 |