FR730085A - étai de mine - Google Patents
étai de mineInfo
- Publication number
- FR730085A FR730085A FR730085DA FR730085A FR 730085 A FR730085 A FR 730085A FR 730085D A FR730085D A FR 730085DA FR 730085 A FR730085 A FR 730085A
- 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
- E21D15/02—Non-telescopic props
- E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
- E21D15/12—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with locking devices located near head or foot
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 |
|---|---|---|---|
| GB730085X | 1930-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR730085A true FR730085A (fr) | 1932-08-05 |
Family
ID=10495460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR730085D Expired FR730085A (fr) | 1930-12-15 | 1931-12-14 | étai de mine |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR730085A (fr) |
-
1931
- 1931-12-14 FR FR730085D patent/FR730085A/fr not_active Expired
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