FR1024377A - Rallonge de soutènement - Google Patents

Rallonge de soutènement

Info

Publication number
FR1024377A
FR1024377A FR1024377DA FR1024377A FR 1024377 A FR1024377 A FR 1024377A FR 1024377D A FR1024377D A FR 1024377DA FR 1024377 A FR1024377 A FR 1024377A
Authority
FR
France
Prior art keywords
support extension
extension
support
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
Jean Sabes
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 FR1024377A publication Critical patent/FR1024377A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1024377D 1950-09-07 1950-09-07 Rallonge de soutènement Expired FR1024377A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1024377T 1950-09-07

Publications (1)

Publication Number Publication Date
FR1024377A true FR1024377A (fr) 1953-04-01

Family

ID=9578795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1024377D Expired FR1024377A (fr) 1950-09-07 1950-09-07 Rallonge de soutènement

Country Status (1)

Country Link
FR (1) FR1024377A (fr)

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