BE555311A - - Google Patents
Info
- Publication number
- BE555311A BE555311A BE555311DA BE555311A BE 555311 A BE555311 A BE 555311A BE 555311D A BE555311D A BE 555311DA BE 555311 A BE555311 A BE 555311A
- Authority
- BE
- Belgium
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
-
- 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
-
- 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
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)
- Portable Nailing Machines And Staplers (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Check Valves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB610856A GB854967A (en) | 1956-02-28 | 1956-02-28 | Improved mine roof supports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE555311A true BE555311A (en) |
Family
ID=9808525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE555311D BE555311A (en) | 1956-02-28 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE555311A (en) |
| GB (1) | GB854967A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3143862A (en) * | 1958-08-11 | 1964-08-11 | Dobson Ltd W E & F | Support of roofs in mines |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950066A (en) * | 1960-02-18 | 1964-02-19 | Gullick Ltd | Improvements in or relating to advancing roof supporting means for mines |
| DE1289805B (en) * | 1962-01-29 | 1969-02-27 | Groetschel Karl Maria | Mechanically retractable face construction unit |
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0
- BE BE555311D patent/BE555311A/xx unknown
-
1956
- 1956-02-28 GB GB610856A patent/GB854967A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3143862A (en) * | 1958-08-11 | 1964-08-11 | Dobson Ltd W E & F | Support of roofs in mines |
Also Published As
| Publication number | Publication date |
|---|---|
| GB854967A (en) | 1960-11-23 |