BE475055A - - Google Patents
Info
- Publication number
- BE475055A BE475055A BE475055DA BE475055A BE 475055 A BE475055 A BE 475055A BE 475055D A BE475055D A BE 475055DA BE 475055 A BE475055 A BE 475055A
- Authority
- BE
- Belgium
- Prior art keywords
- support
- provisional
- prop
- final
- roof
- Prior art date
Links
- 238000009434 installation Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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
- E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts
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)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE475055A true BE475055A (th) |
Family
ID=123865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE475055D BE475055A (th) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE475055A (th) |
-
0
- BE BE475055D patent/BE475055A/fr unknown
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