BE493107A - - Google Patents
Info
- Publication number
- BE493107A BE493107A BE493107DA BE493107A BE 493107 A BE493107 A BE 493107A BE 493107D A BE493107D A BE 493107DA BE 493107 A BE493107 A BE 493107A
- Authority
- BE
- Belgium
- Prior art keywords
- cap
- plate
- support
- pressure plate
- flanges
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000013138 pruning Methods 0.000 claims 1
- 210000003660 reticulum Anatomy 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 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
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE995855X | 1948-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE493107A true BE493107A (mo) |
Family
ID=6918941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE493107D BE493107A (mo) | 1948-11-22 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE493107A (mo) |
| FR (1) | FR995855A (mo) |
-
0
- BE BE493107D patent/BE493107A/fr unknown
-
1949
- 1949-09-20 FR FR995855D patent/FR995855A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR995855A (fr) | 1951-12-10 |
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