NL75278C - - Google Patents
Info
- Publication number
- NL75278C NL75278C NL75278DA NL75278C NL 75278 C NL75278 C NL 75278C NL 75278D A NL75278D A NL 75278DA NL 75278 C NL75278 C NL 75278C
- Authority
- NL
- Netherlands
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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
- E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Plasma & Fusion (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
NL75278C true NL75278C (de) | 1900-01-01 |
Family
ID=1825428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL75278D NL75278C (de) |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL75278C (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045856A1 (de) * | 1980-08-06 | 1982-02-17 | Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte | Schweissvorrichtung zur Herstellung hohlzylindrischer Körper |
-
0
- NL NL75278D patent/NL75278C/xx active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045856A1 (de) * | 1980-08-06 | 1982-02-17 | Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte | Schweissvorrichtung zur Herstellung hohlzylindrischer Körper |