FR1164143A - étançon de mine - Google Patents
étançon de mineInfo
- Publication number
- FR1164143A FR1164143A FR1164143DA FR1164143A FR 1164143 A FR1164143 A FR 1164143A FR 1164143D A FR1164143D A FR 1164143DA FR 1164143 A FR1164143 A FR 1164143A
- Authority
- FR
- France
- Prior art keywords
- mine prop
- prop
- mine
- 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.)
- Expired
Links
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
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1164143X | 1956-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1164143A true FR1164143A (fr) | 1958-10-06 |
Family
ID=7728719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1164143D Expired FR1164143A (fr) | 1956-01-17 | 1957-01-11 | étançon de mine |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1164143A (fr) |
-
1957
- 1957-01-11 FR FR1164143D patent/FR1164143A/fr not_active Expired
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