FR1281995A - Multi-piece, friction-locking mine prop - Google Patents
Multi-piece, friction-locking mine propInfo
- Publication number
- FR1281995A FR1281995A FR845142A FR845142A FR1281995A FR 1281995 A FR1281995 A FR 1281995A FR 845142 A FR845142 A FR 845142A FR 845142 A FR845142 A FR 845142A FR 1281995 A FR1281995 A FR 1281995A
- Authority
- FR
- France
- Prior art keywords
- friction
- piece
- mine prop
- locking
- locking 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
- E21D15/285—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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR845142A FR1281995A (en) | 1960-11-26 | 1960-11-26 | Multi-piece, friction-locking mine prop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR845142A FR1281995A (en) | 1960-11-26 | 1960-11-26 | Multi-piece, friction-locking mine prop |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1281995A true FR1281995A (en) | 1962-01-19 |
Family
ID=8743506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR845142A Expired FR1281995A (en) | 1960-11-26 | 1960-11-26 | Multi-piece, friction-locking mine prop |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1281995A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5590862A (en) * | 1993-11-25 | 1997-01-07 | Ono; Tatsuo | Device for adjusting the length of a support |
-
1960
- 1960-11-26 FR FR845142A patent/FR1281995A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5590862A (en) * | 1993-11-25 | 1997-01-07 | Ono; Tatsuo | Device for adjusting the length of a support |
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