BE486965A - - Google Patents
Info
- Publication number
- BE486965A BE486965A BE486965DA BE486965A BE 486965 A BE486965 A BE 486965A BE 486965D A BE486965D A BE 486965DA BE 486965 A BE486965 A BE 486965A
- Authority
- BE
- Belgium
- Prior art keywords
- bumps
- hollows
- metal
- valleys
- prop
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 4
- 235000012773 waffles Nutrition 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 238000012856 packing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 241001417935 Platycephalidae Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000007493 shaping process 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
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
-
- 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
- E21D15/50—Component parts or details of props
- E21D15/56—Details of locks of telescopic props
- E21D15/563—Details of locks of telescopic props by which a series of similarly shaped props can obtain an almost equal load-capacity
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)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE486965A true BE486965A (enrdf_load_html_response) |
Family
ID=132518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE486965D BE486965A (enrdf_load_html_response) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE486965A (enrdf_load_html_response) |
-
0
- BE BE486965D patent/BE486965A/fr unknown
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