BE520908A - - Google Patents
Info
- Publication number
- BE520908A BE520908A BE520908DA BE520908A BE 520908 A BE520908 A BE 520908A BE 520908D A BE520908D A BE 520908DA BE 520908 A BE520908 A BE 520908A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- tubular
- wall
- thickness
- strut
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008719 thickening Effects 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
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)
- Piles And Underground Anchors (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE520908A true BE520908A (https=) |
Family
ID=156648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE520908D BE520908A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE520908A (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369818A (en) * | 1964-03-02 | 1968-02-20 | Sinclair Research Inc | Oil well stuffing box packing guard |
-
0
- BE BE520908D patent/BE520908A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369818A (en) * | 1964-03-02 | 1968-02-20 | Sinclair Research Inc | Oil well stuffing box packing guard |
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