BE481227A - - Google Patents
Info
- Publication number
- BE481227A BE481227A BE481227DA BE481227A BE 481227 A BE481227 A BE 481227A BE 481227D A BE481227D A BE 481227DA BE 481227 A BE481227 A BE 481227A
- Authority
- BE
- Belgium
- Prior art keywords
- strut
- lock
- coupling member
- inner strut
- wedge
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 26
- 238000010168 coupling process Methods 0.000 claims description 26
- 238000005859 coupling reaction Methods 0.000 claims description 26
- 230000035515 penetration Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 4
- 239000010959 steel Substances 0.000 claims 4
- 101150032210 hel-1 gene Proteins 0.000 claims 1
- 239000003245 coal Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect 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
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
-
- 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
- E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE481227A true BE481227A (de) |
Family
ID=128240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE481227D BE481227A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE481227A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974349C (de) * | 1951-10-19 | 1960-12-01 | Wilhelm Reppel | Mehrteiliger Grubenstempel |
-
0
- BE BE481227D patent/BE481227A/nl unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974349C (de) * | 1951-10-19 | 1960-12-01 | Wilhelm Reppel | Mehrteiliger Grubenstempel |
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