FR995999A - multi-purpose extendable prop for support work - Google Patents

multi-purpose extendable prop for support work

Info

Publication number
FR995999A
FR995999A FR995999DA FR995999A FR 995999 A FR995999 A FR 995999A FR 995999D A FR995999D A FR 995999DA FR 995999 A FR995999 A FR 995999A
Authority
FR
France
Prior art keywords
support work
extendable prop
prop
purpose extendable
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Charles Chabert
Lucien Clement
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR995999A publication Critical patent/FR995999A/en
Expired legal-status Critical Current

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
    • 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)
FR995999D 1945-03-31 1945-03-31 multi-purpose extendable prop for support work Expired FR995999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR995999T 1945-03-31

Publications (1)

Publication Number Publication Date
FR995999A true FR995999A (en) 1951-12-11

Family

ID=9557572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995999D Expired FR995999A (en) 1945-03-31 1945-03-31 multi-purpose extendable prop for support work

Country Status (1)

Country Link
FR (1) FR995999A (en)

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