BE356834A - - Google Patents

Info

Publication number
BE356834A
BE356834A BE356834DA BE356834A BE 356834 A BE356834 A BE 356834A BE 356834D A BE356834D A BE 356834DA BE 356834 A BE356834 A BE 356834A
Authority
BE
Belgium
Prior art keywords
tube
strut
pillar
metal
claws
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE356834A publication Critical patent/BE356834A/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
    • E21D15/02Non-telescopic props
    • E21D15/06Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
    • E21D15/10Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with dog-clutch or pin-and-hole connection

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)
BE356834D BE356834A (online.php)

Publications (1)

Publication Number Publication Date
BE356834A true BE356834A (online.php)

Family

ID=30834

Family Applications (1)

Application Number Title Priority Date Filing Date
BE356834D BE356834A (online.php)

Country Status (1)

Country Link
BE (1) BE356834A (online.php)

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