BE491835A - - Google Patents
Info
- Publication number
- BE491835A BE491835A BE491835DA BE491835A BE 491835 A BE491835 A BE 491835A BE 491835D A BE491835D A BE 491835DA BE 491835 A BE491835 A BE 491835A
- Authority
- BE
- Belgium
- Prior art keywords
- lock
- friction
- fur
- elements
- teeth
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 15
- 238000005065 mining Methods 0.000 claims 4
- 150000001768 cations Chemical class 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000012773 waffles Nutrition 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
- E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
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)
- Braking Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE491835A true BE491835A (en:Method) |
Family
ID=136222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491835D BE491835A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE491835A (en:Method) |
-
0
- BE BE491835D patent/BE491835A/fr unknown
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