FR1027658A - étançon de mines en deux éléments - Google Patents
étançon de mines en deux élémentsInfo
- Publication number
- FR1027658A FR1027658A FR1027658DA FR1027658A FR 1027658 A FR1027658 A FR 1027658A FR 1027658D A FR1027658D A FR 1027658DA FR 1027658 A FR1027658 A FR 1027658A
- Authority
- FR
- France
- Prior art keywords
- mine prop
- piece
- piece mine
- 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
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
- E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring
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 |
|---|---|---|---|
| GB1027658X | 1949-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1027658A true FR1027658A (fr) | 1953-05-13 |
Family
ID=10868958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1027658D Expired FR1027658A (fr) | 1949-11-15 | 1950-11-14 | étançon de mines en deux éléments |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1027658A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2953343A (en) * | 1957-10-24 | 1960-09-20 | Schwarz Hermann Kg | Two-part mine prop |
-
1950
- 1950-11-14 FR FR1027658D patent/FR1027658A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2953343A (en) * | 1957-10-24 | 1960-09-20 | Schwarz Hermann Kg | Two-part mine prop |
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