JPS4839323B1 - - Google Patents
Info
- Publication number
- JPS4839323B1 JPS4839323B1 JP43081011A JP8101168A JPS4839323B1 JP S4839323 B1 JPS4839323 B1 JP S4839323B1 JP 43081011 A JP43081011 A JP 43081011A JP 8101168 A JP8101168 A JP 8101168A JP S4839323 B1 JPS4839323 B1 JP S4839323B1
- 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
- E21D23/16—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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0017—Pile type supports
- E21D23/0021—Pile type supports comprising two walking elements
-
- 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
- E21D23/12—Control, e.g. using remote 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
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)
- Lining And Supports For Tunnels (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5084767 | 1967-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4839323B1 true JPS4839323B1 (en) | 1973-11-22 |
Family
ID=10457623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP43081011A Pending JPS4839323B1 (en) | 1967-11-08 | 1968-11-07 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3530490A (en) |
| JP (1) | JPS4839323B1 (en) |
| AT (1) | AT277117B (en) |
| DE (1) | DE1805229C3 (en) |
| GB (1) | GB1228381A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702061A (en) * | 1971-09-20 | 1972-11-07 | Kloeckner Werke Ag | Hydraulic support systems for mine workings |
| BE795481A (en) * | 1972-09-14 | 1973-05-29 | Gewerk Eisenhuette Westfalia | BACKUP PILE FOR MINING, FEATURING A HYDRAULIC CONTROL BLOCK |
| US3996753A (en) * | 1973-02-27 | 1976-12-14 | Becorit Grubenausbau Gmbh | Mine roof support |
| GB1546630A (en) * | 1976-12-29 | 1979-05-23 | Fletcher Sutcliffe Wild Ltd | Mine roof supports |
| DE2733270C2 (en) * | 1977-07-22 | 1984-07-19 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Expansion control for a progressive hydraulic expansion |
| DE3002818C2 (en) * | 1980-01-26 | 1984-02-23 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Device for controlling hydraulic feed cylinders, in particular for the feed of sliding caps of a walking support |
| DE3212747A1 (en) * | 1982-04-06 | 1983-10-06 | Gewerk Eisenhuette Westfalia | DEVICE FOR STROKE CONTROL OF A CYLINDER GROUP OF A HYDRAULIC REMOVAL SYSTEM, IN PARTICULAR FOR SETTING THE STAMP OF A SCREAM REMOVAL UNIT |
| GB9009859D0 (en) * | 1990-05-02 | 1990-06-27 | Meco Mining Equip | A mine roof support |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE558976A (en) * | ||||
| US2585297A (en) * | 1949-05-23 | 1952-02-12 | Rupert Diecasting Company | Aluminum die-casting machine |
| US3198083A (en) * | 1963-05-13 | 1965-08-03 | Dowty Mining Equipment Ltd | Control system for mine roof supports |
| GB1022469A (en) * | 1964-02-11 | 1966-03-16 | Dowty Mining Equipment Ltd | Roof support assembly suitable for use in mines |
-
1967
- 1967-11-08 GB GB5084767A patent/GB1228381A/en not_active Expired
-
1968
- 1968-09-23 US US761562A patent/US3530490A/en not_active Expired - Lifetime
- 1968-10-25 DE DE1805229A patent/DE1805229C3/en not_active Expired
- 1968-10-31 AT AT1060768A patent/AT277117B/en not_active IP Right Cessation
- 1968-11-07 JP JP43081011A patent/JPS4839323B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1805229C3 (en) | 1974-08-15 |
| AT277117B (en) | 1969-12-10 |
| US3530490A (en) | 1970-09-22 |
| DE1805229A1 (en) | 1972-05-25 |
| GB1228381A (en) | 1971-04-15 |