BE516049A - - Google Patents

Info

Publication number
BE516049A
BE516049A BE516049DA BE516049A BE 516049 A BE516049 A BE 516049A BE 516049D A BE516049D A BE 516049DA BE 516049 A BE516049 A BE 516049A
Authority
BE
Belgium
Prior art keywords
lever
lock
wedge
clamping
excavations
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE516049A publication Critical patent/BE516049A/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)
BE516049D BE516049A (cg-RX-API-DMAC10.html)

Publications (1)

Publication Number Publication Date
BE516049A true BE516049A (cg-RX-API-DMAC10.html)

Family

ID=153365

Family Applications (1)

Application Number Title Priority Date Filing Date
BE516049D BE516049A (cg-RX-API-DMAC10.html)

Country Status (1)

Country Link
BE (1) BE516049A (cg-RX-API-DMAC10.html)

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