BE542887A - - Google Patents
Info
- Publication number
- BE542887A BE542887A BE542887DA BE542887A BE 542887 A BE542887 A BE 542887A BE 542887D A BE542887D A BE 542887DA BE 542887 A BE542887 A BE 542887A
- 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
- E21D15/14—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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1116525T | 1954-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE542887A true BE542887A (en:Method) |
Family
ID=9629503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE542887D BE542887A (en:Method) | 1954-12-14 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE542887A (en:Method) |
| FR (2) | FR1116525A (en:Method) |
| GB (1) | GB796827A (en:Method) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3055626A (en) * | 1960-04-09 | 1962-09-25 | Mastabar Mining Equip Co Ltd | Hydraulic supports |
| US3073562A (en) * | 1960-04-19 | 1963-01-15 | Mastabar Mining Equip Co Ltd | Hydraulic supports |
-
0
- BE BE542887D patent/BE542887A/xx unknown
-
1954
- 1954-12-14 FR FR1116525D patent/FR1116525A/fr not_active Expired
-
1955
- 1955-06-28 FR FR67964D patent/FR67964E/fr not_active Expired
- 1955-12-08 GB GB35256/55A patent/GB796827A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3055626A (en) * | 1960-04-09 | 1962-09-25 | Mastabar Mining Equip Co Ltd | Hydraulic supports |
| US3073562A (en) * | 1960-04-19 | 1963-01-15 | Mastabar Mining Equip Co Ltd | Hydraulic supports |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1116525A (fr) | 1956-05-08 |
| FR67964E (fr) | 1958-03-26 |
| GB796827A (en) | 1958-06-18 |