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 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 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 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0037332 | 1963-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE645521A true BE645521A (de) | 1964-07-16 |
Family
ID=7125611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE645521D BE645521A (de) | 1963-03-22 | 1964-03-20 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE645521A (de) |
| GB (1) | GB1039314A (de) |
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 BE BE645521D patent/BE645521A/xx unknown
- 1964-03-20 GB GB1198864A patent/GB1039314A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1039314A (en) | 1966-08-17 |