BE509043A - - Google Patents

Info

Publication number
BE509043A
BE509043A BE509043DA BE509043A BE 509043 A BE509043 A BE 509043A BE 509043D A BE509043D A BE 509043DA BE 509043 A BE509043 A BE 509043A
Authority
BE
Belgium
Prior art keywords
prop
wedge
wedges
transverse
lock
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE509043A publication Critical patent/BE509043A/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
    • E21D15/285Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
  • Clamps And Clips (AREA)
BE509043D BE509043A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE509043A true BE509043A (enrdf_load_html_response)

Family

ID=148580

Family Applications (1)

Application Number Title Priority Date Filing Date
BE509043D BE509043A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE509043A (enrdf_load_html_response)

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