BE381860A - - Google Patents
Info
- Publication number
- BE381860A BE381860A BE381860DA BE381860A BE 381860 A BE381860 A BE 381860A BE 381860D A BE381860D A BE 381860DA BE 381860 A BE381860 A BE 381860A
- Authority
- BE
- Belgium
- Prior art keywords
- tube
- tubes
- ring
- conical
- lower tube
- Prior art date
Links
- 238000005242 forging Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE381860A true BE381860A (forum.php) |
Family
ID=51336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE381860D BE381860A (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE381860A (forum.php) |
-
0
- BE BE381860D patent/BE381860A/fr unknown
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