DD4818A - - Google Patents

Info

Publication number
DD4818A
DD4818A DD4818DA DD4818A DD 4818 A DD4818 A DD 4818A DD 4818D A DD4818D A DD 4818DA DD 4818 A DD4818 A DD 4818A
Authority
DD
German Democratic Republic
Application number
Publication of DD4818A publication Critical patent/DD4818A/xx

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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
    • 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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports

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)
DD4818D DD4818A (es)

Publications (1)

Publication Number Publication Date
DD4818A true DD4818A (es)

Family

ID=217817

Family Applications (1)

Application Number Title Priority Date Filing Date
DD4818D DD4818A (es)

Country Status (1)

Country Link
DD (1) DD4818A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408255A1 (de) * 1983-03-08 1984-10-25 Dobson Park Industries PLC, Nottingham Strebausbauelement fuer den untertaegigen grubenbetrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408255A1 (de) * 1983-03-08 1984-10-25 Dobson Park Industries PLC, Nottingham Strebausbauelement fuer den untertaegigen grubenbetrieb

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