NL6607724A - - Google Patents
Info
- Publication number
- NL6607724A NL6607724A NL6607724A NL6607724A NL6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A
- 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
- E21D23/006—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
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting devices
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)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Fluid-Pressure Circuits (AREA)
- Framework For Endless Conveyors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG43831A DE1239649B (de) | 1965-06-10 | 1965-06-10 | Rueckvorrichtung fuer Strebfoerderer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6607724A true NL6607724A (en:Method) | 1966-12-12 |
Family
ID=7127285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6607724A NL6607724A (en:Method) | 1965-06-10 | 1966-06-03 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3381586A (en:Method) |
| BE (1) | BE682366A (en:Method) |
| DE (1) | DE1239649B (en:Method) |
| GB (1) | GB1131356A (en:Method) |
| NL (1) | NL6607724A (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958495A (en) * | 1972-08-31 | 1976-05-25 | Koehring Company | Air-oil amplifier |
| US3968732A (en) * | 1972-11-10 | 1976-07-13 | Fitzgerald William Maurice Bar | Hydraulic power transmission system |
| US3855808A (en) * | 1973-09-12 | 1974-12-24 | G Alacchi | Shifting system for walking supports |
| DE2803907C3 (de) * | 1978-01-30 | 1982-09-23 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Lösbare Gelenkverbindung für den untertägigen Bergbau und ihre Verwendung an einem Strebausbaugestell |
| FR2501765A1 (fr) * | 1981-03-10 | 1982-09-17 | Mecanismes Comp Ind De | Serrure, notamment pour portiere de vehicule automobile |
| CN104894929A (zh) * | 2015-06-13 | 2015-09-09 | 安徽圣力达电器有限公司 | 复合型水泥道板地滚托架 |
| CN109026112B (zh) * | 2018-10-12 | 2024-03-08 | 辽宁威跃集团机械制造有限公司 | 煤矿液压支架调向回收装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2593039A (en) * | 1949-07-26 | 1952-04-15 | Bendix Aviat Corp | Valve for sequential operation of hydraulic motors |
| DE1191777B (de) * | 1962-03-21 | 1965-04-29 | Salzgitter Maschinen Ag | Hydraulischer Ausbaurahmen fuer Strebabbaue unter Tage |
-
1965
- 1965-06-10 DE DEG43831A patent/DE1239649B/de active Pending
-
1966
- 1966-06-03 NL NL6607724A patent/NL6607724A/xx unknown
- 1966-06-06 GB GB25011/66A patent/GB1131356A/en not_active Expired
- 1966-06-06 US US555346A patent/US3381586A/en not_active Expired - Lifetime
- 1966-06-10 BE BE682366D patent/BE682366A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1131356A (en) | 1968-10-23 |
| DE1239649B (de) | 1967-05-03 |
| BE682366A (en:Method) | 1966-12-12 |
| US3381586A (en) | 1968-05-07 |