FR1002994A - iron mine prop - Google Patents

iron mine prop

Info

Publication number
FR1002994A
FR1002994A FR1002994DA FR1002994A FR 1002994 A FR1002994 A FR 1002994A FR 1002994D A FR1002994D A FR 1002994DA FR 1002994 A FR1002994 A FR 1002994A
Authority
FR
France
Prior art keywords
iron mine
mine prop
prop
iron
mine
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
Wilhelm Waskonig
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 FR1002994A publication Critical patent/FR1002994A/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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic 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)
FR1002994D 1946-11-15 1946-11-15 iron mine prop Expired FR1002994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1002994T 1946-11-15

Publications (1)

Publication Number Publication Date
FR1002994A true FR1002994A (en) 1952-03-12

Family

ID=9562580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1002994D Expired FR1002994A (en) 1946-11-15 1946-11-15 iron mine prop

Country Status (1)

Country Link
FR (1) FR1002994A (en)

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