BE661068A - - Google Patents
Info
- Publication number
- BE661068A BE661068A BE661068A BE661068A BE661068A BE 661068 A BE661068 A BE 661068A BE 661068 A BE661068 A BE 661068A BE 661068 A BE661068 A BE 661068A BE 661068 A BE661068 A BE 661068A
- 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
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- 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
- E21D23/0065—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 driven, or automatically, e.g. electrically-hydraulically controlled
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/43—Programme-control systems fluidic
- G05B19/46—Programme-control systems fluidic hydraulic
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1078364A GB1105655A (en) | 1964-03-13 | 1964-03-13 | Improvements relating to hydraulic systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE661068A true BE661068A (xx) | 1965-07-01 |
Family
ID=9974186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE661068A BE661068A (xx) | 1964-03-13 | 1965-03-12 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE661068A (xx) |
| DE (1) | DE1303518B (xx) |
| FR (1) | FR1426654A (xx) |
| GB (1) | GB1105655A (xx) |
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1964
- 1964-03-13 GB GB1078364A patent/GB1105655A/en not_active Expired
-
1965
- 1965-03-12 DE DE19651303518D patent/DE1303518B/de active Pending
- 1965-03-12 BE BE661068A patent/BE661068A/xx unknown
- 1965-03-12 FR FR8995A patent/FR1426654A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1426654A (fr) | 1966-01-28 |
| GB1105655A (en) | 1968-03-13 |
| DE1303518B (xx) | 1972-05-31 |