BE658328A - - Google Patents
Info
- Publication number
- BE658328A BE658328A BE658328DA BE658328A BE 658328 A BE658328 A BE 658328A BE 658328D A BE658328D A BE 658328DA BE 658328 A BE658328 A BE 658328A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/606—Devices for withdrawing props or chocks the props being moved systematically
-
- 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
- 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
-
- 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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
- Fluid-Driven Valves (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2314/64A GB1086002A (en) | 1964-01-18 | 1964-01-18 | An improved hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE658328A true BE658328A (nl) | 1965-04-30 |
Family
ID=9737370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE658328D BE658328A (nl) | 1964-01-18 | 1965-01-15 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3295814A (nl) |
| BE (1) | BE658328A (nl) |
| DE (1) | DE1226513B (nl) |
| FR (1) | FR1421076A (nl) |
| GB (1) | GB1086002A (nl) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4621565A (en) * | 1984-08-15 | 1986-11-11 | Automotive Products Plc | Hydraulic slave cylinder switch |
| CN103291335A (zh) * | 2013-05-31 | 2013-09-11 | 巨隆集团芜湖兴隆液压有限公司 | 一种平衡浮动双向锁 |
| CN110259491B (zh) * | 2019-07-04 | 2024-06-11 | 山东中煤电器有限公司 | 液压支架用电动直推式换向阀 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1069549B (nl) * | 1959-11-26 |
-
1964
- 1964-01-18 GB GB2314/64A patent/GB1086002A/en not_active Expired
-
1965
- 1965-01-13 US US425123A patent/US3295814A/en not_active Expired - Lifetime
- 1965-01-14 DE DED46241A patent/DE1226513B/de active Pending
- 1965-01-15 BE BE658328D patent/BE658328A/xx unknown
- 1965-01-18 FR FR2374A patent/FR1421076A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1086002A (en) | 1967-10-04 |
| DE1226513B (de) | 1966-10-13 |
| US3295814A (en) | 1967-01-03 |
| FR1421076A (fr) | 1965-12-10 |