BE443481A - - Google Patents

Info

Publication number
BE443481A
BE443481A BE443481DA BE443481A BE 443481 A BE443481 A BE 443481A BE 443481D A BE443481D A BE 443481DA BE 443481 A BE443481 A BE 443481A
Authority
BE
Belgium
Prior art keywords
tools
wedge
frame
tool
drilling
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE443481A publication Critical patent/BE443481A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C27/00Machines which completely free the mineral from the seam
    • E21C27/10Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/128Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with breaking-down members functioning on the slitting level
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C37/00Other methods or devices for dislodging with or without loading
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C37/00Other methods or devices for dislodging with or without loading
    • E21C37/22Hand tools or hand-held power-operated tools specially adapted for dislodging minerals

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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
BE443481D BE443481A (zh)

Publications (1)

Publication Number Publication Date
BE443481A true BE443481A (zh)

Family

ID=100400

Family Applications (1)

Application Number Title Priority Date Filing Date
BE443481D BE443481A (zh)

Country Status (1)

Country Link
BE (1) BE443481A (zh)

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