DE8904493U1 - - Google Patents
Info
- Publication number
- DE8904493U1 DE8904493U1 DE8904493U DE8904493U DE8904493U1 DE 8904493 U1 DE8904493 U1 DE 8904493U1 DE 8904493 U DE8904493 U DE 8904493U DE 8904493 U DE8904493 U DE 8904493U DE 8904493 U1 DE8904493 U1 DE 8904493U1
- Authority
- DE
- Germany
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8904493U DE8904493U1 (de) | 1989-04-10 | 1989-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8904493U DE8904493U1 (de) | 1989-04-10 | 1989-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8904493U1 true DE8904493U1 (de) | 1989-05-18 |
Family
ID=6838137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8904493U Expired DE8904493U1 (de) | 1989-04-10 | 1989-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8904493U1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461311A2 (de) * | 1990-06-12 | 1991-12-18 | Hitachi Construction Machinery Co., Ltd. | Zylindrisches teleskopisches Antriebsgestänge |
| DE19831755C1 (de) * | 1998-07-15 | 1999-12-02 | Zueblin Ag | Kellystangenverlängerung |
| EP1580398A1 (de) * | 2004-03-23 | 2005-09-28 | BAUER Maschinen GmbH | Verfahren und Vorrichtung zum Tiefbau |
| DE102020208439A1 (de) | 2020-07-06 | 2022-01-13 | EMDE Bohrtechnik Nentershausen GmbH | Bohrstange, Kelly-Bohrgestänge und Verfahren |
-
1989
- 1989-04-10 DE DE8904493U patent/DE8904493U1/de not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461311A2 (de) * | 1990-06-12 | 1991-12-18 | Hitachi Construction Machinery Co., Ltd. | Zylindrisches teleskopisches Antriebsgestänge |
| EP0461311A3 (en) * | 1990-06-12 | 1992-07-08 | Hitachi Construction Machinery Co., Ltd. | Cylindrical telescopic kelly-bar apparatus |
| US5263899A (en) * | 1990-06-12 | 1993-11-23 | Hitachi Construction Machinery Co., Ltd. | Cylindrical telescopic kelly-bar apparatus |
| EP0798444A1 (de) * | 1990-06-12 | 1997-10-01 | Hitachi Construction Machinery Co., Ltd. | Zylindrisches,teleskopisches Antriebsgestänge |
| DE19831755C1 (de) * | 1998-07-15 | 1999-12-02 | Zueblin Ag | Kellystangenverlängerung |
| EP1580398A1 (de) * | 2004-03-23 | 2005-09-28 | BAUER Maschinen GmbH | Verfahren und Vorrichtung zum Tiefbau |
| DE102020208439A1 (de) | 2020-07-06 | 2022-01-13 | EMDE Bohrtechnik Nentershausen GmbH | Bohrstange, Kelly-Bohrgestänge und Verfahren |
| DE102020208439B4 (de) | 2020-07-06 | 2023-08-03 | EMDE Bohrtechnik Nentershausen GmbH | Bohrstange, Kelly-Bohrgestänge und Verfahren |