PL294208A1 - - Google Patents
Info
- Publication number
- PL294208A1 PL294208A1 PL29420891A PL29420891A PL294208A1 PL 294208 A1 PL294208 A1 PL 294208A1 PL 29420891 A PL29420891 A PL 29420891A PL 29420891 A PL29420891 A PL 29420891A PL 294208 A1 PL294208 A1 PL 294208A1
- Authority
- PL
- Poland
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
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)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4023451 | 1990-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
PL294208A1 true PL294208A1 (de) | 1993-02-08 |
Family
ID=6410890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL29420891A PL294208A1 (de) | 1990-07-24 | 1991-03-12 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0491882B1 (de) |
DE (2) | DE9116604U1 (de) |
PL (1) | PL294208A1 (de) |
WO (1) | WO1992001858A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647943C1 (de) * | 1996-11-20 | 1998-06-18 | Dbt Gmbh | Hydraulischer Doppelteleskopstempel |
CN101105133B (zh) * | 2007-07-27 | 2010-05-19 | 中国矿业大学 | 双伸缩悬浮式液压立柱 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1050524A (de) * | ||||
DE1098889B (de) * | 1958-02-20 | 1961-02-09 | Bwg Bergwerk U Walzwerk Maschb | Bodenverschluss fuer den Arbeitszylinder hydraulischer Grubenstempel |
GB1093778A (en) * | 1965-08-17 | 1967-12-06 | Dowty Mining Equipment Ltd | Fluid-pressure-operated prop |
DE2403852C3 (de) * | 1974-01-28 | 1981-01-08 | Gewerkschaft Eisenhuette Westfalia, 4670 Luenen | Hydraulischer Teleskopstempel für den Grubenausbau |
DE3421002A1 (de) * | 1984-06-06 | 1985-12-12 | GAG Grubenausbau GmbH, 5840 Schwerte | Hydraulischer stempel in modulbauweise |
DE3904644C1 (en) * | 1989-02-16 | 1990-03-29 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De | Hydraulic pit prop |
-
1991
- 1991-03-12 EP EP91905621A patent/EP0491882B1/de not_active Revoked
- 1991-03-12 DE DE9116604U patent/DE9116604U1/de not_active Expired - Lifetime
- 1991-03-12 PL PL29420891A patent/PL294208A1/xx unknown
- 1991-03-12 DE DE59103043T patent/DE59103043D1/de not_active Revoked
- 1991-03-12 WO PCT/EP1991/000459 patent/WO1992001858A1/de not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0491882B1 (de) | 1994-09-21 |
EP0491882A1 (de) | 1992-07-01 |
DE59103043D1 (de) | 1994-10-27 |
DE9116604U1 (de) | 1993-03-11 |
WO1992001858A1 (de) | 1992-02-06 |