FR1057033A - étançon métallique coulissant - Google Patents
étançon métallique coulissantInfo
- Publication number
- FR1057033A FR1057033A FR1057033DA FR1057033A FR 1057033 A FR1057033 A FR 1057033A FR 1057033D A FR1057033D A FR 1057033DA FR 1057033 A FR1057033 A FR 1057033A
- Authority
- FR
- France
- Prior art keywords
- sliding metal
- metal prop
- prop
- sliding
- metal
- 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
- 239000002184 metal Substances 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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
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 |
---|---|---|---|
FR1057033T | 1952-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1057033A true FR1057033A (fr) | 1954-03-04 |
Family
ID=9597737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1057033D Expired FR1057033A (fr) | 1952-03-10 | 1952-03-10 | étançon métallique coulissant |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1057033A (fr) |
-
1952
- 1952-03-10 FR FR1057033D patent/FR1057033A/fr not_active Expired
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