BE645521A - - Google Patents
Info
- Publication number
- BE645521A BE645521A BE645521DA BE645521A BE 645521 A BE645521 A BE 645521A BE 645521D A BE645521D A BE 645521DA BE 645521 A BE645521 A BE 645521A
- Authority
- BE
- Belgium
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
- E21D23/26—Hydraulic or pneumatic control
-
- 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
-
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
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)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0037332 | 1963-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE645521A true BE645521A (US06633782-20031014-M00005.png) | 1964-07-16 |
Family
ID=7125611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE645521D BE645521A (US06633782-20031014-M00005.png) | 1963-03-22 | 1964-03-20 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE645521A (US06633782-20031014-M00005.png) |
| GB (1) | GB1039314A (US06633782-20031014-M00005.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2909165C2 (de) * | 1979-03-08 | 1986-11-27 | Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen | Vorrichtung zum Anschluß eines hydraulischen Schreitausbaus an das Versorgungssystem eines untertägigen Gewinnungsbetriebes |
| GB2164987A (en) * | 1984-09-26 | 1986-04-03 | Dowty Mining Equipment Ltd | Mine roof supports |
-
1964
- 1964-03-20 GB GB1198864A patent/GB1039314A/en not_active Expired
- 1964-03-20 BE BE645521D patent/BE645521A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1039314A (en) | 1966-08-17 |
