BE685544A - - Google Patents
Info
- Publication number
- BE685544A BE685544A BE685544DA BE685544A BE 685544 A BE685544 A BE 685544A BE 685544D A BE685544D A BE 685544DA BE 685544 A BE685544 A BE 685544A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- box
- extension
- against rotation
- tongue
- Prior art date
Links
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 4
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting 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
- E21D15/50—Component parts or details of props
- E21D15/52—Extensible units located above or below standard props
-
- 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/049—Connecting devices between the head or foot of a prop and the cap or base of the roof support
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)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0052060 | 1965-08-25 | ||
| DEK0058466 | 1966-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE685544A true BE685544A (enExample) | 1967-02-16 |
Family
ID=25983867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE685544D BE685544A (enExample) | 1965-08-25 | 1966-08-16 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE685544A (enExample) |
| NL (1) | NL6611957A (enExample) |
-
1966
- 1966-08-16 BE BE685544D patent/BE685544A/fr unknown
- 1966-08-25 NL NL6611957A patent/NL6611957A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6611957A (enExample) | 1967-02-27 |
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