DE209120C - - Google Patents
Info
- Publication number
- DE209120C DE209120C DENDAT209120D DE209120DA DE209120C DE 209120 C DE209120 C DE 209120C DE NDAT209120 D DENDAT209120 D DE NDAT209120D DE 209120D A DE209120D A DE 209120DA DE 209120 C DE209120 C DE 209120C
- Authority
- DE
- Germany
- Prior art keywords
- sheath
- tubes
- concrete
- held together
- longitudinal ribs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 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
- E21D15/02—Non-telescopic props
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)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE209120C true DE209120C (en, 2012) |
Family
ID=471108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT209120D Active DE209120C (en, 2012) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE209120C (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028496A1 (en) * | 1979-11-02 | 1981-05-13 | Mine Support Systems (Proprietary) Limited | Timber prop |
-
0
- DE DENDAT209120D patent/DE209120C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028496A1 (en) * | 1979-11-02 | 1981-05-13 | Mine Support Systems (Proprietary) Limited | Timber prop |
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