FR955604A - - Google Patents

Info

Publication number
FR955604A
FR955604A FR955604DA FR955604A FR 955604 A FR955604 A FR 955604A FR 955604D A FR955604D A FR 955604DA FR 955604 A FR955604 A FR 955604A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR955604A publication Critical patent/FR955604A/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
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type
    • 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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props

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)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
FR955604D Expired FR955604A (ja)

Publications (1)

Publication Number Publication Date
FR955604A true FR955604A (ja) 1950-01-18

Family

ID=1558305

Family Applications (1)

Application Number Title Priority Date Filing Date
FR955604D Expired FR955604A (ja)

Country Status (1)

Country Link
FR (1) FR955604A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958463C (de) * 1951-03-07 1957-02-21 Der Niederlaendische Staat Ver Koecherfoermige Umhuellung fuer Kappen im Strebbau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958463C (de) * 1951-03-07 1957-02-21 Der Niederlaendische Staat Ver Koecherfoermige Umhuellung fuer Kappen im Strebbau

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