BE492154A - - Google Patents
Info
- Publication number
- BE492154A BE492154A BE492154DA BE492154A BE 492154 A BE492154 A BE 492154A BE 492154D A BE492154D A BE 492154DA BE 492154 A BE492154 A BE 492154A
- Authority
- BE
- Belgium
- Prior art keywords
- yoke
- prop
- split
- muzzle
- jaws
- Prior art date
Links
- 230000000284 resting effect Effects 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000002184 metal Substances 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)
- Mutual Connection Of Rods And Tubes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE492154A true BE492154A (https=) |
Family
ID=136467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE492154D BE492154A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE492154A (https=) |
-
0
- BE BE492154D patent/BE492154A/fr unknown
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