NL6414602A - - Google Patents
Info
- Publication number
- NL6414602A NL6414602A NL6414602A NL6414602A NL6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A
- Authority
- NL
- Netherlands
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
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)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0088877 | 1963-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6414602A true NL6414602A (en) | 1965-06-25 |
Family
ID=7514737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6414602A NL6414602A (en) | 1963-12-24 | 1964-12-15 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE657410A (en) |
| NL (1) | NL6414602A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2808205C2 (en) * | 1978-02-25 | 1985-10-10 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Hydraulic control for a gap cover arranged on the cap or on the breakage shield of a walking support |
-
1964
- 1964-12-15 NL NL6414602A patent/NL6414602A/xx unknown
- 1964-12-21 BE BE657410D patent/BE657410A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE657410A (en) | 1965-04-16 |