BE412910A - - Google Patents
Info
- Publication number
- BE412910A BE412910A BE412910DA BE412910A BE 412910 A BE412910 A BE 412910A BE 412910D A BE412910D A BE 412910DA BE 412910 A BE412910 A BE 412910A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- tube
- sliding
- sleeve
- ring
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing 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)
- Orthopedics, Nursing, And Contraception (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE412910A true BE412910A (enEXAMPLES) |
Family
ID=76560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE412910D BE412910A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE412910A (enEXAMPLES) |
-
0
- BE BE412910D patent/BE412910A/fr unknown
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