BE484780A - - Google Patents

Info

Publication number
BE484780A
BE484780A BE484780DA BE484780A BE 484780 A BE484780 A BE 484780A BE 484780D A BE484780D A BE 484780DA BE 484780 A BE484780 A BE 484780A
Authority
BE
Belgium
Prior art keywords
rolled
prop
lock
profile
metal
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE484780A publication Critical patent/BE484780A/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
    • E21D15/50—Component parts or details of props
    • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
    • 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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction

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)
BE484780D BE484780A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE484780A true BE484780A (enrdf_load_html_response)

Family

ID=130858

Family Applications (1)

Application Number Title Priority Date Filing Date
BE484780D BE484780A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE484780A (enrdf_load_html_response)

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