JPS4827563B1 - - Google Patents
Info
- Publication number
- JPS4827563B1 JPS4827563B1 JP44004049A JP404969A JPS4827563B1 JP S4827563 B1 JPS4827563 B1 JP S4827563B1 JP 44004049 A JP44004049 A JP 44004049A JP 404969 A JP404969 A JP 404969A JP S4827563 B1 JPS4827563 B1 JP S4827563B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- E21D23/04—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
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Lining And Supports For Tunnels (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681608277 DE1608277A1 (en) | 1968-03-09 | 1968-03-09 | Hydraulically moving support frame with a single ram in front |
| DE19681758344 DE1758344C3 (en) | 1968-05-16 | Hydraulically moving longwall construction with at least three interconnected frames |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4827563B1 true JPS4827563B1 (en) | 1973-08-23 |
Family
ID=25753597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP44004049A Pending JPS4827563B1 (en) | 1968-03-09 | 1969-01-20 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4827563B1 (en) |
| FR (1) | FR1596213A (en) |
| GB (1) | GB1243426A (en) |
-
1968
- 1968-12-20 FR FR1596213D patent/FR1596213A/fr not_active Expired
-
1969
- 1969-01-20 JP JP44004049A patent/JPS4827563B1/ja active Pending
- 1969-02-26 GB GB1025869A patent/GB1243426A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1596213A (en) | 1970-06-15 |
| GB1243426A (en) | 1971-08-18 |