DK135961C - - Google Patents
Info
- Publication number
- DK135961C DK135961C DK81669A DK81669A DK135961C DK 135961 C DK135961 C DK 135961C DK 81669 A DK81669 A DK 81669A DK 81669 A DK81669 A DK 81669A DK 135961 C DK135961 C DK 135961C
- Authority
- DK
- Denmark
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)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Making Paper Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70617668A | 1968-02-16 | 1968-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK135961B DK135961B (en) | 1977-07-18 |
| DK135961C true DK135961C (en) | 1977-12-12 |
Family
ID=24836510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK81669AA DK135961B (en) | 1968-02-16 | 1969-02-14 | Telescopic coupling. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3492028A (en) |
| DE (3) | DE1907572A1 (en) |
| DK (1) | DK135961B (en) |
| FI (1) | FI55891C (en) |
| FR (1) | FR2002052A1 (en) |
| GB (1) | GB1232932A (en) |
| NL (1) | NL149569B (en) |
| NO (1) | NO126874B (en) |
| SE (1) | SE349349B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678031A (en) * | 1986-01-27 | 1987-07-07 | Blandford David M | Rotatable reciprocating collar for borehole casing |
| US4751967A (en) * | 1986-01-27 | 1988-06-21 | Blandford David M | Stage cementing apparatus |
| US5263899A (en) * | 1990-06-12 | 1993-11-23 | Hitachi Construction Machinery Co., Ltd. | Cylindrical telescopic kelly-bar apparatus |
| DE20319527U1 (en) | 2003-12-16 | 2004-03-04 | Maschinenbau Oppenweiler Binder Gmbh & Co. Kg | Transport shaft for a folding machine |
| CN112647859B (en) * | 2020-12-24 | 2024-07-16 | 江苏拓海煤矿钻探机械有限公司 | Hydraulic joint for coal mine drill rod |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US320661A (en) * | 1885-06-23 | Gas-tight expansion-joint | ||
| US1034368A (en) * | 1910-04-21 | 1912-07-30 | William Kahle | Automatic drilling-tool. |
| GB524935A (en) * | 1938-02-15 | 1940-08-19 | Karl Lars Esais Thunholm | Improvements in expansion joints for pipes and the like |
| US2664271A (en) * | 1951-12-06 | 1953-12-29 | Arutunoff Armais | Sealing device for tubular shafting |
| US2783844A (en) * | 1955-10-05 | 1957-03-05 | Exxon Research Engineering Co | Tubing apparatus |
| US3291225A (en) * | 1964-07-03 | 1966-12-13 | Gardner Denver Co | Drive coupling for drill string |
-
1968
- 1968-02-16 US US706176A patent/US3492028A/en not_active Expired - Lifetime
-
1969
- 1969-01-31 FI FI306/69A patent/FI55891C/en active
- 1969-02-14 FR FR6903691A patent/FR2002052A1/fr not_active Withdrawn
- 1969-02-14 GB GB1232932D patent/GB1232932A/en not_active Expired
- 1969-02-14 DE DE19691907572 patent/DE1907572A1/en not_active Withdrawn
- 1969-02-14 SE SE02038/69A patent/SE349349B/xx unknown
- 1969-02-14 DK DK81669AA patent/DK135961B/en unknown
- 1969-02-14 NL NL696902362A patent/NL149569B/en not_active IP Right Cessation
- 1969-02-15 NO NO00621/69A patent/NO126874B/no unknown
- 1969-02-17 DE DE19691907908 patent/DE1907908C2/en not_active Expired
- 1969-02-17 DE DE6906217U patent/DE6906217U/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1232932A (en) | 1971-05-26 |
| FI55891C (en) | 1979-10-10 |
| DE6906217U (en) | 1971-07-29 |
| FI55891B (en) | 1979-06-29 |
| DE1907908C2 (en) | 1971-05-13 |
| SE349349B (en) | 1972-09-25 |
| DK135961B (en) | 1977-07-18 |
| DE1907572A1 (en) | 1969-08-28 |
| FR2002052A1 (en) | 1969-10-03 |
| DE1907908B1 (en) | 1970-10-08 |
| NL149569B (en) | 1976-05-17 |
| US3492028A (en) | 1970-01-27 |
| NL6902362A (en) | 1969-08-19 |
| NO126874B (en) | 1973-04-02 |