BE525750A - - Google Patents

Info

Publication number
BE525750A
BE525750A BE525750DA BE525750A BE 525750 A BE525750 A BE 525750A BE 525750D A BE525750D A BE 525750DA BE 525750 A BE525750 A BE 525750A
Authority
BE
Belgium
Prior art keywords
prop
jaws
mine
region
shiftable
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE525750A publication Critical patent/BE525750A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/28Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/32Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
BE525750D BE525750A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE525750A true BE525750A (enrdf_load_stackoverflow)

Family

ID=159940

Family Applications (1)

Application Number Title Priority Date Filing Date
BE525750D BE525750A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE525750A (enrdf_load_stackoverflow)

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