BE405653A - - Google Patents
Info
- Publication number
- BE405653A BE405653A BE405653DA BE405653A BE 405653 A BE405653 A BE 405653A BE 405653D A BE405653D A BE 405653DA BE 405653 A BE405653 A BE 405653A
- Authority
- BE
- Belgium
- Prior art keywords
- pawl
- rack
- female
- female part
- male
- Prior art date
Links
- 235000000396 iron Nutrition 0.000 claims description 9
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 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
- E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
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)
- Adornments (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE405653A true BE405653A (enEXAMPLES) |
Family
ID=70797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE405653D BE405653A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE405653A (enEXAMPLES) |
-
0
- BE BE405653D patent/BE405653A/fr unknown
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