RO60927A - - Google Patents
Info
- Publication number
- RO60927A RO60927A RO70909A RO7090972A RO60927A RO 60927 A RO60927 A RO 60927A RO 70909 A RO70909 A RO 70909A RO 7090972 A RO7090972 A RO 7090972A RO 60927 A RO60927 A RO 60927A
- Authority
- RO
- Romania
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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0436—Means for inclining the base member of the support
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Geology (AREA)
- Prostheses (AREA)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Types And Forms Of Lifts (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712129749 DE2129749C (en) | 1971-06-16 | Mobile extension with a device for lifting substructures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO60927A true RO60927A (en) | 1976-10-15 |
Family
ID=5810871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO70909A RO60927A (en) | 1971-06-16 | 1972-05-16 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3748861A (en) |
| ES (1) | ES402534A1 (en) |
| FR (1) | FR2141871B1 (en) |
| GB (1) | GB1391510A (en) |
| PL (1) | PL82001B1 (en) |
| RO (1) | RO60927A (en) |
| ZA (1) | ZA724069B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1114626A (en) * | 1979-02-03 | 1981-12-22 | John C. Smith | Mine roof support |
| GB8328281D0 (en) * | 1983-10-22 | 1983-11-23 | Dobson Park Ind | Mine roof supports |
| DE3400771A1 (en) * | 1984-01-12 | 1985-07-18 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | EXTENSION FRAME, IN PARTICULAR SHIELD EXTENSION FRAME, WITH A LIFTING DEVICE FOR LIFTING THE RECESSED RUNNERS |
| US5584611A (en) * | 1994-11-22 | 1996-12-17 | Long-Airdox | Roof support for underground excavations |
| CN102536290A (en) * | 2012-03-23 | 2012-07-04 | 郑州四维机电设备制造有限公司 | Face guard lockout mechanism |
| US10774642B1 (en) * | 2019-05-05 | 2020-09-15 | Liaoning University | Hydraulic support unit and hydraulic support for anti-rock burst roadway |
| CN111594248B (en) * | 2020-05-28 | 2021-05-28 | 张世敏 | Special temporary support equipment for tunnel bridge |
| CN113622969B (en) * | 2021-08-21 | 2023-09-22 | 华东矿用设备有限公司 | Mining hydraulic supporting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1075518B (en) * | 1960-02-18 | Hermann Schwarz Kommanditgesellschaft, Wattenscheid | Migrating metallic lining for mining operations in mines | |
| US3143862A (en) * | 1958-08-11 | 1964-08-11 | Dobson Ltd W E & F | Support of roofs in mines |
| US3115754A (en) * | 1959-01-23 | 1963-12-31 | Dowty Mining Equipment Ltd | Mining shield |
| GB966034A (en) * | 1961-10-02 | 1964-08-06 | Dowty Mining Equipment Ltd | Advanceable roof support suitable for use in mines |
| FR1368750A (en) * | 1963-01-22 | 1964-08-07 | Houilleres Bassin Du Nord | Improvement in support piles |
| FR92217E (en) * | 1965-06-29 | 1968-10-11 | Support for mines and process for its advancement |
-
1972
- 1972-05-09 ES ES402534A patent/ES402534A1/en not_active Expired
- 1972-05-16 RO RO70909A patent/RO60927A/ro unknown
- 1972-06-08 PL PL1972155886A patent/PL82001B1/pl unknown
- 1972-06-13 ZA ZA724069A patent/ZA724069B/en unknown
- 1972-06-13 FR FR7221231A patent/FR2141871B1/fr not_active Expired
- 1972-06-15 GB GB2798072A patent/GB1391510A/en not_active Expired
- 1972-06-16 US US00263472A patent/US3748861A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| PL82001B1 (en) | 1975-10-31 |
| DE2129749B1 (en) | 1972-05-25 |
| US3748861A (en) | 1973-07-31 |
| ES402534A1 (en) | 1976-04-16 |
| FR2141871A1 (en) | 1973-01-26 |
| FR2141871B1 (en) | 1978-03-03 |
| GB1391510A (en) | 1975-04-23 |
| ZA724069B (en) | 1973-03-28 |