BE472217A - - Google Patents
Info
- Publication number
- BE472217A BE472217A BE472217DA BE472217A BE 472217 A BE472217 A BE 472217A BE 472217D A BE472217D A BE 472217DA BE 472217 A BE472217 A BE 472217A
- Authority
- BE
- Belgium
- Prior art keywords
- extensions
- support according
- spacers
- extension
- spacer
- Prior art date
Links
- 125000006850 spacer group Chemical group 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 2
- 235000000396 iron Nutrition 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/0213—Assembling devices for pivoting caps upwardly
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Tents Or Canopies (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE472217A true BE472217A (https=) |
Family
ID=121850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE472217D BE472217A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE472217A (https=) |
-
0
- BE BE472217D patent/BE472217A/fr unknown
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