FI752161A - - Google Patents

Info

Publication number
FI752161A
FI752161A FI752161A FI752161A FI752161A FI 752161 A FI752161 A FI 752161A FI 752161 A FI752161 A FI 752161A FI 752161 A FI752161 A FI 752161A FI 752161 A FI752161 A FI 752161A
Authority
FI
Finland
Application number
FI752161A
Other languages
Finnish (fi)
Inventor
Alfred Ingevald Lundkvist
Original Assignee
Lundkvist Alfred
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 Lundkvist Alfred filed Critical Lundkvist Alfred
Publication of FI752161A publication Critical patent/FI752161A/fi

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Dowels (AREA)
FI752161A 1974-07-30 1975-07-28 FI752161A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7409831A SE380581B (sv) 1974-07-30 1974-07-30 Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal

Publications (1)

Publication Number Publication Date
FI752161A true FI752161A (ja) 1976-01-31

Family

ID=20321802

Family Applications (1)

Application Number Title Priority Date Filing Date
FI752161A FI752161A (ja) 1974-07-30 1975-07-28

Country Status (3)

Country Link
FI (1) FI752161A (ja)
NO (1) NO752687L (ja)
SE (1) SE380581B (ja)

Also Published As

Publication number Publication date
NO752687L (ja) 1976-02-02
SE380581B (sv) 1975-11-10

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: LUNDKVIST, ALFRED INGEVALD