BE399615A - - Google Patents
Info
- Publication number
- BE399615A BE399615A BE399615DA BE399615A BE 399615 A BE399615 A BE 399615A BE 399615D A BE399615D A BE 399615DA BE 399615 A BE399615 A BE 399615A
- Authority
- BE
- Belgium
- Prior art keywords
- collar
- prop
- strut
- mine
- upper element
- Prior art date
Links
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 2
- 241000251131 Sphyrna Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000926 separation method 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
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
- E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring
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)
- Percussive Tools And Related Accessories (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE399615A true BE399615A (https=) |
Family
ID=65898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE399615D BE399615A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE399615A (https=) |
-
0
- BE BE399615D patent/BE399615A/fr unknown
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