BE522294A - - Google Patents

Info

Publication number
BE522294A
BE522294A BE522294DA BE522294A BE 522294 A BE522294 A BE 522294A BE 522294D A BE522294D A BE 522294DA BE 522294 A BE522294 A BE 522294A
Authority
BE
Belgium
Prior art keywords
wedge
friction
rod
extendable
locking device
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE522294A publication Critical patent/BE522294A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
    • E21D15/5817—Devices for setting props or chocks in which the props are pre- loaded in which the lock is also activated

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)
BE522294D BE522294A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE522294A true BE522294A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=157609

Family Applications (1)

Application Number Title Priority Date Filing Date
BE522294D BE522294A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE522294A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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