FR873730A - étai en fer pour galeries de mine - Google Patents
étai en fer pour galeries de mineInfo
- Publication number
- FR873730A FR873730A FR873730DA FR873730A FR 873730 A FR873730 A FR 873730A FR 873730D A FR873730D A FR 873730DA FR 873730 A FR873730 A FR 873730A
- Authority
- FR
- France
- Prior art keywords
- iron prop
- mine galleries
- galleries
- mine
- prop
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910052742 iron Inorganic materials 0.000 title 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
- E21D15/50—Component parts or details of props
- E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
-
- 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)
- Clamps And Clips (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE441916X | 1940-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR873730A true FR873730A (fr) | 1942-07-17 |
Family
ID=99274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR873730D Expired FR873730A (fr) | 1940-04-27 | 1941-07-09 | étai en fer pour galeries de mine |
Country Status (2)
Country | Link |
---|---|
BE (2) | BE441916A (fr) |
FR (1) | FR873730A (fr) |
-
1941
- 1941-06-26 BE BE441916A patent/BE441916A/fr unknown
- 1941-07-09 FR FR873730D patent/FR873730A/fr not_active Expired
-
1942
- 1942-09-30 BE BE447395A patent/BE447395R/fr active
Also Published As
Publication number | Publication date |
---|---|
BE441916A (fr) | 1941-07-31 |
BE447395R (fr) | 1942-10-31 |
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