BE526791A - - Google Patents
Info
- Publication number
- BE526791A BE526791A BE526791DA BE526791A BE 526791 A BE526791 A BE 526791A BE 526791D A BE526791D A BE 526791DA BE 526791 A BE526791 A BE 526791A
- 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
- E21D15/14—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
- E21D15/517—Extension elements
-
- 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
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Actuator (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5311/53A GB741150A (en) | 1953-02-25 | 1953-02-25 | Improvements in mine roof supports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE526791A true BE526791A (es) |
Family
ID=9793715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE526791D BE526791A (es) | 1953-02-25 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2857125A (es) |
| BE (1) | BE526791A (es) |
| DE (1) | DE946528C (es) |
| FR (1) | FR1096391A (es) |
| GB (1) | GB741150A (es) |
| NL (1) | NL185384B (es) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173053B (de) * | 1959-03-03 | 1964-07-02 | Dobson Ltd W E & F | Hydraulischer Grubenstempel |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094209B (de) * | 1954-09-10 | 1960-12-08 | Rheinstahl Gmbh Wanheim | Grubenstempel |
| DE1023436B (de) * | 1955-11-24 | 1958-01-30 | Hermann Schwarz Kommanditgesel | Hydraulischer Grubenstempel |
| BE553228A (es) * | 1955-12-08 | |||
| DE1062654B (de) * | 1956-04-03 | 1959-08-06 | Kloeckner Bergbau Viktor Icker | Hydraulischer Grubenstempel |
| DE1081397B (de) * | 1956-06-25 | 1960-05-12 | Becorit Grubenausbau Gmbh | Hydraulischer Grubenstempel |
| GB845918A (en) * | 1957-02-06 | 1960-08-24 | Dowty Mining Equipment Ltd | Improvements in fluid pressure relief valves |
| GB894292A (en) * | 1957-07-30 | 1962-04-18 | Mastabar Mining Equip Co Ltd | Improvements in or relating to hydraulic props, particularly pit props |
| FR1280684A (fr) * | 1960-11-22 | 1962-01-08 | Sagem | étançon hydraulique |
| US3830456A (en) * | 1972-12-22 | 1974-08-20 | Fletcher J & Co | Mining apparatus |
| FR2505925A1 (fr) * | 1981-05-12 | 1982-11-19 | Alsace Mines Potasse | Dispositif mecanique de liaison entre tete ou pied d'etancon et embase ou chapeau des piles de soutenement |
| CN102562100A (zh) * | 2010-12-13 | 2012-07-11 | 襄樊禹仁机电液压科技有限公司 | 一种自动排气的单体液压支柱 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE289904C (es) * | ||||
| GB636568A (en) * | 1953-07-20 | 1950-05-03 | George Herbert Dowty | Improvements in pit props and other telescopic struts |
| FR1009955A (fr) * | 1948-07-15 | 1952-06-05 | Soutènement de galerie de mine | |
| GB658998A (en) * | 1948-09-01 | 1951-10-17 | Dowty Equipment Ltd | Improvements in mine roof supports |
-
0
- BE BE526791D patent/BE526791A/xx unknown
-
1953
- 1953-02-25 GB GB5311/53A patent/GB741150A/en not_active Expired
-
1954
- 1954-02-24 FR FR1096391D patent/FR1096391A/fr not_active Expired
- 1954-02-24 NL NLAANVRAGE7402426,A patent/NL185384B/xx not_active IP Right Cessation
- 1954-02-24 US US412303A patent/US2857125A/en not_active Expired - Lifetime
- 1954-02-25 DE DED17124A patent/DE946528C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173053B (de) * | 1959-03-03 | 1964-07-02 | Dobson Ltd W E & F | Hydraulischer Grubenstempel |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1096391A (fr) | 1955-06-20 |
| NL185384B (nl) | 1958-04-15 |
| DE946528C (de) | 1956-08-02 |
| US2857125A (en) | 1958-10-21 |
| GB741150A (en) | 1955-11-30 |