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
Application number
Priority date (The priority date 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 date listed.)
Publication of BE526791A publication Critical patent/BE526791A/xx

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)
BE526791D 1953-02-25 BE526791A (enrdf_load_stackoverflow)

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 (enrdf_load_stackoverflow)

Family

ID=9793715

Family Applications (1)

Application Number Title Priority Date Filing Date
BE526791D BE526791A (enrdf_load_stackoverflow) 1953-02-25

Country Status (6)

Country Link
US (1) US2857125A (enrdf_load_stackoverflow)
BE (1) BE526791A (enrdf_load_stackoverflow)
DE (1) DE946528C (enrdf_load_stackoverflow)
FR (1) FR1096391A (enrdf_load_stackoverflow)
GB (1) GB741150A (enrdf_load_stackoverflow)
NL (1) NL185384B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (enrdf_load_stackoverflow) * 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289904C (enrdf_load_stackoverflow) *
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

Cited By (1)

* Cited by examiner, † Cited by third party
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
GB741150A (en) 1955-11-30
US2857125A (en) 1958-10-21
DE946528C (de) 1956-08-02
NL185384B (nl) 1958-04-15

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