BE572255A - - Google Patents
Info
- Publication number
- BE572255A BE572255A BE572255A BE572255A BE572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A
- 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
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/515—Particular fluids not covered by any chemical subdivision
-
- 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
- E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
- E21D15/155—Built-in cleaning 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
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)
- Details Of Reciprocating Pumps (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN14244A DE1224684B (en) | 1957-10-25 | 1957-10-25 | Hydraulic pit ram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE572255A true BE572255A (en) | 1958-11-14 |
Family
ID=7339843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE572255A BE572255A (en) | 1957-10-25 | 1958-10-21 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE572255A (en) |
| DE (1) | DE1224684B (en) |
| FR (1) | FR1207204A (en) |
| GB (1) | GB877345A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357859A (en) * | 1981-04-08 | 1982-11-09 | United Technologies Corporation | Pressure sensor |
| IT8223222V0 (en) * | 1982-10-18 | 1982-10-18 | Giovanni Trevisan | GUIDE DEVICE FOR PISTONS OF FLUID DYNAMIC ACTUATORS, PARTICULARLY OF THE ROTATING TYPE WITH TWO COAXIAL PISTONS, EQUIPPED WITH RACKS. |
| CN113605941A (en) * | 2021-08-04 | 2021-11-05 | 陈立伟 | Single screw prop |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE899483C (en) * | 1953-11-05 | Eisenwerk Wanheim G.M.B.H., Duisburg-Wanheim | Iron pit stamp | |
| DE1009137B (en) * | 1955-12-14 | 1957-05-29 | Hermann Schwarz K G | Hydraulic pit ram with tubular inner and outer part |
| BE560360A (en) * | 1956-08-29 |
-
1957
- 1957-10-25 DE DEN14244A patent/DE1224684B/en active Pending
-
1958
- 1958-09-05 GB GB2858058A patent/GB877345A/en not_active Expired
- 1958-10-10 FR FR1207204D patent/FR1207204A/en not_active Expired
- 1958-10-21 BE BE572255A patent/BE572255A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB877345A (en) | 1961-09-13 |
| DE1224684B (en) | 1966-09-15 |
| FR1207204A (en) | 1960-02-15 |