BE488276A - - Google Patents

Info

Publication number
BE488276A
BE488276A BE488276DA BE488276A BE 488276 A BE488276 A BE 488276A BE 488276D A BE488276D A BE 488276DA BE 488276 A BE488276 A BE 488276A
Authority
BE
Belgium
Prior art keywords
wedge
lock
clamping piece
bearing
barrel
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE488276A publication Critical patent/BE488276A/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
    • E21D15/40Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

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)
BE488276D BE488276A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE488276A true BE488276A (enrdf_load_html_response)

Family

ID=133511

Family Applications (1)

Application Number Title Priority Date Filing Date
BE488276D BE488276A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE488276A (enrdf_load_html_response)

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