FR1484272A - mine prop for remote-controlled support frames - Google Patents
mine prop for remote-controlled support framesInfo
- Publication number
- FR1484272A FR1484272A FR66391A FR66391A FR1484272A FR 1484272 A FR1484272 A FR 1484272A FR 66391 A FR66391 A FR 66391A FR 66391 A FR66391 A FR 66391A FR 1484272 A FR1484272 A FR 1484272A
- Authority
- FR
- France
- Prior art keywords
- remote
- support frames
- controlled support
- mine prop
- 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
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- 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
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/603—Devices for withdrawing props or chocks by means of hydraulic devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR66391A FR1484272A (en) | 1965-07-01 | 1966-06-22 | mine prop for remote-controlled support frames |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG44042A DE1215634B (en) | 1965-07-01 | 1965-07-01 | Pit stamp for remote-controlled support frames |
FR66391A FR1484272A (en) | 1965-07-01 | 1966-06-22 | mine prop for remote-controlled support frames |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1484272A true FR1484272A (en) | 1967-06-09 |
Family
ID=25978720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR66391A Expired FR1484272A (en) | 1965-07-01 | 1966-06-22 | mine prop for remote-controlled support frames |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1484272A (en) |
-
1966
- 1966-06-22 FR FR66391A patent/FR1484272A/en not_active Expired
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