FR1040546A - étançon - Google Patents
étançonInfo
- Publication number
- FR1040546A FR1040546A FR1040546DA FR1040546A FR 1040546 A FR1040546 A FR 1040546A FR 1040546D A FR1040546D A FR 1040546DA FR 1040546 A FR1040546 A FR 1040546A
- Authority
- FR
- France
- Prior art keywords
- 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
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 |
---|---|---|---|
BE1040546X | 1950-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1040546A true FR1040546A (fr) | 1953-10-15 |
Family
ID=3892720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1040546D Expired FR1040546A (fr) | 1950-09-09 | 1951-08-16 | étançon |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1040546A (fr) |
-
1951
- 1951-08-16 FR FR1040546D patent/FR1040546A/fr not_active Expired
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