DE2542475A1 - - Google Patents

Info

Publication number
DE2542475A1
DE2542475A1 DE19752542475 DE2542475A DE2542475A1 DE 2542475 A1 DE2542475 A1 DE 2542475A1 DE 19752542475 DE19752542475 DE 19752542475 DE 2542475 A DE2542475 A DE 2542475A DE 2542475 A1 DE2542475 A1 DE 2542475A1
Authority
DE
Germany
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.)
Granted
Application number
DE19752542475
Other languages
German (de)
Other versions
DE2542475C2 (de
DE2542475B1 (de
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.)
Filing date
Publication date
Application filed filed Critical
Priority to DE19752542475 priority Critical patent/DE2542475C2/de
Priority claimed from DE19752542475 external-priority patent/DE2542475C2/de
Publication of DE2542475B1 publication Critical patent/DE2542475B1/de
Publication of DE2542475A1 publication Critical patent/DE2542475A1/de
Application granted granted Critical
Publication of DE2542475C2 publication Critical patent/DE2542475C2/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
DE19752542475 1975-09-24 Hydraulischer Ausbauschild Expired DE2542475C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752542475 DE2542475C2 (de) 1975-09-24 Hydraulischer Ausbauschild

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752542475 DE2542475C2 (de) 1975-09-24 Hydraulischer Ausbauschild

Publications (3)

Publication Number Publication Date
DE2542475B1 DE2542475B1 (de) 1976-12-23
DE2542475A1 true DE2542475A1 (enrdf_load_stackoverflow) 1976-12-23
DE2542475C2 DE2542475C2 (de) 1977-10-27

Family

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Also Published As

Publication number Publication date
DE2542475B1 (de) 1976-12-23

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee