FR1237069A - Support hydraulique extensible tel qu'un étai de mine - Google Patents
Support hydraulique extensible tel qu'un étai de mineInfo
- Publication number
- FR1237069A FR1237069A FR806894A FR806894A FR1237069A FR 1237069 A FR1237069 A FR 1237069A FR 806894 A FR806894 A FR 806894A FR 806894 A FR806894 A FR 806894A FR 1237069 A FR1237069 A FR 1237069A
- Authority
- FR
- France
- Prior art keywords
- hydraulic support
- mine prop
- extendable hydraulic
- extendable
- prop
- 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
-
- 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)
- Actuator (AREA)
- Forklifts And Lifting Vehicles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34603/58A GB862033A (en) | 1958-10-29 | 1958-10-29 | Improvements in or relating to extensible hydraulic supports |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1237069A true FR1237069A (fr) | 1960-07-22 |
Family
ID=10367701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR806894A Expired FR1237069A (fr) | 1958-10-29 | 1959-10-07 | Support hydraulique extensible tel qu'un étai de mine |
Country Status (4)
Country | Link |
---|---|
US (1) | US2985418A (fr) |
BE (1) | BE584049A (fr) |
FR (1) | FR1237069A (fr) |
GB (1) | GB862033A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3133720A (en) * | 1962-03-27 | 1964-05-19 | Commercial Shearing | Yieldable pit posts |
US4142449A (en) * | 1976-02-03 | 1979-03-06 | Thyssen Industrie Ag | Hydraulic mine prop |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US371919A (en) * | 1887-10-25 | belden | ||
US1886621A (en) * | 1928-05-09 | 1932-11-08 | William L Bagwill | Cracking still and process |
US2477533A (en) * | 1946-10-19 | 1949-07-26 | William A Whiting | Pipe joint |
BE486663A (fr) * | 1948-01-12 | |||
US2693223A (en) * | 1952-02-21 | 1954-11-02 | Goodrich Co B F | Method of making flexible hollow connections |
-
1958
- 1958-10-29 GB GB34603/58A patent/GB862033A/en not_active Expired
-
1959
- 1959-10-02 US US843977A patent/US2985418A/en not_active Expired - Lifetime
- 1959-10-07 FR FR806894A patent/FR1237069A/fr not_active Expired
- 1959-10-27 BE BE584049A patent/BE584049A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
GB862033A (en) | 1961-03-01 |
BE584049A (fr) | 1960-02-15 |
US2985418A (en) | 1961-05-23 |
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