FR1201162A - Perfectionnements aux étais ou vérins hydrauliques - Google Patents
Perfectionnements aux étais ou vérins hydrauliquesInfo
- Publication number
- FR1201162A FR1201162A FR1201162DA FR1201162A FR 1201162 A FR1201162 A FR 1201162A FR 1201162D A FR1201162D A FR 1201162DA FR 1201162 A FR1201162 A FR 1201162A
- Authority
- FR
- France
- Prior art keywords
- props
- hydraulic cylinders
- cylinders
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Jet Pumps And Other Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2478457A GB848229A (en) | 1957-08-06 | 1957-08-06 | Improvements in and relating to hydraulic pit props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1201162A true FR1201162A (fr) | 1959-12-29 |
Family
ID=10217208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1201162D Expired FR1201162A (fr) | 1957-08-06 | 1958-08-06 | Perfectionnements aux étais ou vérins hydrauliques |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1064906B (fr) |
| FR (1) | FR1201162A (fr) |
| GB (1) | GB848229A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1153704B (de) * | 1962-02-24 | 1963-09-05 | Mannesmann Ag | Setzvorrichtung fuer Grubenstempel |
| US3133720A (en) * | 1962-03-27 | 1964-05-19 | Commercial Shearing | Yieldable pit posts |
| DE1227409B (de) * | 1964-12-31 | 1966-10-27 | Karl Gerlach | Hydraulisch ausfahrbarer und reibungsschluessig verspannbarer Teleskopgrubenstempel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE871585C (de) * | 1950-01-17 | 1953-03-23 | Edgar Tacke | Hydraulischer Grubenstempel |
-
1957
- 1957-08-06 GB GB2478457A patent/GB848229A/en not_active Expired
-
1958
- 1958-08-06 DE DED28699A patent/DE1064906B/de active Pending
- 1958-08-06 FR FR1201162D patent/FR1201162A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB848229A (en) | 1960-09-14 |
| DE1064906B (de) | 1959-09-10 |
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