BE455383A - - Google Patents
Info
- Publication number
- BE455383A BE455383A BE455383DA BE455383A BE 455383 A BE455383 A BE 455383A BE 455383D A BE455383D A BE 455383DA BE 455383 A BE455383 A BE 455383A
- Authority
- BE
- Belgium
- Prior art keywords
- key
- horizontal offset
- clamping
- prop
- fact
- Prior art date
Links
- 230000000284 resting effect Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003466 welding 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
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
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)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE455383A true BE455383A (en:Method) |
Family
ID=109311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE455383D BE455383A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE455383A (en:Method) |
-
0
- BE BE455383D patent/BE455383A/fr unknown
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