FR1067752A - iron mine prop - Google Patents

iron mine prop

Info

Publication number
FR1067752A
FR1067752A FR1067752DA FR1067752A FR 1067752 A FR1067752 A FR 1067752A FR 1067752D A FR1067752D A FR 1067752DA FR 1067752 A FR1067752 A FR 1067752A
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
Willi Zindel
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 FR1067752A publication Critical patent/FR1067752A/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
    • E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring

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)
FR1067752D 1952-02-26 1952-12-17 iron mine prop Expired FR1067752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1067752X 1952-02-26

Publications (1)

Publication Number Publication Date
FR1067752A true FR1067752A (en) 1954-06-18

Family

ID=7719345

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1067752D Expired FR1067752A (en) 1952-02-26 1952-12-17 iron mine prop

Country Status (1)

Country Link
FR (1) FR1067752A (en)

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