BE528077A - - Google Patents
Info
- Publication number
- BE528077A BE528077A BE528077DA BE528077A BE 528077 A BE528077 A BE 528077A BE 528077D A BE528077D A BE 528077DA BE 528077 A BE528077 A BE 528077A
- Authority
- BE
- Belgium
- Prior art keywords
- punch
- faces
- lock
- clamping pieces
- prop
- Prior art date
Links
- 239000002184 metal Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003466 welding 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)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE528077A true BE528077A (en(2012)) |
Family
ID=161503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE528077D BE528077A (en(2012)) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE528077A (en(2012)) |
-
0
- BE BE528077D patent/BE528077A/fr unknown
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