BG28277A3 - Key unit for mine caps - Google Patents

Key unit for mine caps

Info

Publication number
BG28277A3
BG28277A3 BG018129A BG1812971A BG28277A3 BG 28277 A3 BG28277 A3 BG 28277A3 BG 018129 A BG018129 A BG 018129A BG 1812971 A BG1812971 A BG 1812971A BG 28277 A3 BG28277 A3 BG 28277A3
Authority
BG
Bulgaria
Prior art keywords
caps
shoe
wedge
bed
key unit
Prior art date
Application number
BG018129A
Other languages
Bulgarian (bg)
English (en)
Inventor
Jozsef Korbuly
Elvin Koemives
Pal Vincze
Nandor Husz
Laszlo Zashav
Jmve Koehlev
Kavoly Molnav
Janos Viragh
Original Assignee
Banyaszati Kutato Intezet
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 by Banyaszati Kutato Intezet filed Critical Banyaszati Kutato Intezet
Publication of BG28277A3 publication Critical patent/BG28277A3/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props

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)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Tents Or Canopies (AREA)
BG018129A 1970-12-09 1971-07-21 Key unit for mine caps BG28277A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUBA002505 1970-12-09

Publications (1)

Publication Number Publication Date
BG28277A3 true BG28277A3 (en) 1980-03-25

Family

ID=10993325

Family Applications (1)

Application Number Title Priority Date Filing Date
BG018129A BG28277A3 (en) 1970-12-09 1971-07-21 Key unit for mine caps

Country Status (6)

Country Link
AT (1) AT311910B (cs)
BG (1) BG28277A3 (cs)
CS (1) CS153588B2 (cs)
DE (1) DE2133640A1 (cs)
PL (1) PL77728B1 (cs)
RO (1) RO58812A (cs)

Also Published As

Publication number Publication date
RO58812A (cs) 1975-09-15
CS153588B2 (cs) 1974-02-25
PL77728B1 (en) 1975-04-30
AT311910B (de) 1973-12-10
DE2133640A1 (de) 1972-06-22

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