BE569915A - - Google Patents
Info
- Publication number
- BE569915A BE569915A BE569915A BE569915A BE569915A BE 569915 A BE569915 A BE 569915A BE 569915 A BE569915 A BE 569915A BE 569915 A BE569915 A BE 569915A BE 569915 A BE569915 A BE 569915A
- 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
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
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- 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
- E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P7/00—Emergency devices preventing damage to a machine or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Press Drives And Press Lines (AREA)
- Reciprocating Pumps (AREA)
- Earth Drilling (AREA)
- Electron Sources, Ion Sources (AREA)
- Actuator (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24074/57A GB894292A (en) | 1957-07-30 | 1957-07-30 | Improvements in or relating to hydraulic props, particularly pit props |
| GB4417460A GB1017231A (en) | 1960-12-22 | 1960-12-22 | Improvements in or relating to hydraulic props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE569915A true BE569915A (US06653308-20031125-C00057.png) | 1958-08-14 |
Family
ID=26256889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE569915A BE569915A (US06653308-20031125-C00057.png) | 1957-07-30 | 1958-07-30 |
Country Status (5)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB894292A (en) * | 1957-07-30 | 1962-04-18 | Mastabar Mining Equip Co Ltd | Improvements in or relating to hydraulic props, particularly pit props |
| GB954676A (en) * | 1960-12-22 | 1964-04-08 | Dowty Mining Equipment Ltd | Telescopic hydraulic props |
| CN112922648B (zh) * | 2021-04-07 | 2021-11-09 | 中国矿业大学 | 一种轨道式液压组合支架 |
| CN114991844B (zh) * | 2022-08-03 | 2022-10-25 | 太原向明智控科技有限公司 | 一种煤矿智能化综采工作面矿压数据采集及统计方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US302070A (en) * | 1884-07-15 | Thomas h | ||
| US2064445A (en) * | 1936-12-15 | Bumpek sack | ||
| FR935536A (fr) * | 1946-10-31 | 1948-06-22 | Collier auto-serreur amovible pour étançons métalliques employés pour les soutènements | |
| US2520426A (en) * | 1947-10-15 | 1950-08-29 | Auto Specialties Mfg Co | Hydraulic jack |
| BE486663A (US06653308-20031125-C00057.png) * | 1948-01-12 | |||
| BE526791A (US06653308-20031125-C00057.png) * | 1953-02-25 | |||
| NL191038A (US06653308-20031125-C00057.png) * | 1953-09-24 | 1900-01-01 | ||
| US2831011A (en) * | 1954-12-22 | 1958-04-15 | Dow Corning | Method of reacting silanes with ethers |
| BE553227A (US06653308-20031125-C00057.png) * | 1955-06-10 | |||
| BE559146A (US06653308-20031125-C00057.png) * | 1956-07-05 | |||
| GB894292A (en) * | 1957-07-30 | 1962-04-18 | Mastabar Mining Equip Co Ltd | Improvements in or relating to hydraulic props, particularly pit props |
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1957
- 1957-07-30 GB GB24074/57A patent/GB894292A/en not_active Expired
-
1958
- 1958-07-19 DE DEM38329A patent/DE1114456B/de active Pending
- 1958-07-28 US US751475A patent/US2959922A/en not_active Expired - Lifetime
- 1958-07-29 FR FR1200691D patent/FR1200691A/fr not_active Expired
- 1958-07-30 BE BE569915A patent/BE569915A/xx unknown
-
1961
- 1961-12-13 US US159056A patent/US3119309A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1114456B (de) | 1961-10-05 |
| US2959922A (en) | 1960-11-15 |
| FR1200691A (fr) | 1959-12-23 |
| US3119309A (en) | 1964-01-28 |
| GB894292A (en) | 1962-04-18 |
