BE667320A - - Google Patents
Info
- Publication number
- BE667320A BE667320A BE667320DA BE667320A BE 667320 A BE667320 A BE 667320A BE 667320D A BE667320D A BE 667320DA BE 667320 A BE667320 A BE 667320A
- Authority
- BE
- Belgium
- Prior art keywords
- head
- receptacle
- extension
- cap
- ribs
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012530 fluid Substances 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
- E21D15/50—Component parts or details of props
- E21D15/52—Extensible units located above or below standard props
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)
- Casings For Electric Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE667320A true BE667320A (enExample) |
Family
ID=207935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE667320D BE667320A (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE667320A (enExample) |
-
0
- BE BE667320D patent/BE667320A/fr unknown
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