BE470352A - - Google Patents
Info
- Publication number
- BE470352A BE470352A BE470352DA BE470352A BE 470352 A BE470352 A BE 470352A BE 470352D A BE470352D A BE 470352DA BE 470352 A BE470352 A BE 470352A
- Authority
- BE
- Belgium
- Prior art keywords
- bosses
- nut
- face
- wedge
- periphery
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 1
- 240000001973 Ficus microcarpa Species 0.000 description 1
- 240000004670 Glycyrrhiza echinata Species 0.000 description 1
- 235000001453 Glycyrrhiza echinata Nutrition 0.000 description 1
- 235000006200 Glycyrrhiza glabra Nutrition 0.000 description 1
- 235000017382 Glycyrrhiza lepidota Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229940010454 licorice Drugs 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
- E21D15/26—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism with screw, worm, or the like, not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure
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 |
|---|---|
| BE470352A true BE470352A (en:Method) |
Family
ID=120542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470352D BE470352A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE470352A (en:Method) |
-
0
- BE BE470352D patent/BE470352A/fr unknown
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