BE490313A - - Google Patents
Info
- Publication number
- BE490313A BE490313A BE490313DA BE490313A BE 490313 A BE490313 A BE 490313A BE 490313D A BE490313D A BE 490313DA BE 490313 A BE490313 A BE 490313A
- Authority
- BE
- Belgium
- Prior art keywords
- upright
- pad
- wedge
- guide
- cap
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims 2
- 230000004048 modification Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000006073 displacement reaction 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)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE490313A true BE490313A (en:Method) |
Family
ID=135054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE490313D BE490313A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE490313A (en:Method) |
-
0
- BE BE490313D patent/BE490313A/fr unknown
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