FR985689A - étançon de mine de hauteur réglable - Google Patents

étançon de mine de hauteur réglable

Info

Publication number
FR985689A
FR985689A FR985689DA FR985689A FR 985689 A FR985689 A FR 985689A FR 985689D A FR985689D A FR 985689DA FR 985689 A FR985689 A FR 985689A
Authority
FR
France
Prior art keywords
height adjustable
mine prop
adjustable mine
prop
height
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
English (en)
Inventor
Rene Frantz
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 FR985689A publication Critical patent/FR985689A/fr
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

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)
FR985689D 1949-05-05 1949-05-05 étançon de mine de hauteur réglable Expired FR985689A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR985689T 1949-05-05

Publications (1)

Publication Number Publication Date
FR985689A true FR985689A (fr) 1951-07-23

Family

ID=9537571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR985689D Expired FR985689A (fr) 1949-05-05 1949-05-05 étançon de mine de hauteur réglable

Country Status (1)

Country Link
FR (1) FR985689A (fr)

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