FR1071602A - Poteau de mine - Google Patents

Poteau de mine

Info

Publication number
FR1071602A
FR1071602A FR1071602DA FR1071602A FR 1071602 A FR1071602 A FR 1071602A FR 1071602D A FR1071602D A FR 1071602DA FR 1071602 A FR1071602 A FR 1071602A
Authority
FR
France
Prior art keywords
pit prop
prop
pit
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEWERKSCHAFT INTERRA
Original Assignee
GEWERKSCHAFT INTERRA
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 by GEWERKSCHAFT INTERRA filed Critical GEWERKSCHAFT INTERRA
Application granted granted Critical
Publication of FR1071602A publication Critical patent/FR1071602A/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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations

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)
FR1071602D 1948-03-11 1948-03-11 Poteau de mine Expired FR1071602A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1071602T 1948-03-11

Publications (1)

Publication Number Publication Date
FR1071602A true FR1071602A (fr) 1954-09-02

Family

ID=9605233

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1071602D Expired FR1071602A (fr) 1948-03-11 1948-03-11 Poteau de mine

Country Status (1)

Country Link
FR (1) FR1071602A (fr)

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