FR995855A - Chapeau de soutènement du toit, en particulier pour le soutènement dans les exploitations par tailles - Google Patents

Chapeau de soutènement du toit, en particulier pour le soutènement dans les exploitations par tailles

Info

Publication number
FR995855A
FR995855A FR995855DA FR995855A FR 995855 A FR995855 A FR 995855A FR 995855D A FR995855D A FR 995855DA FR 995855 A FR995855 A FR 995855A
Authority
FR
France
Prior art keywords
retaining
roof
cap
farms
size
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)
French (fr)
Inventor
Alexander Schubert
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 FR995855A publication Critical patent/FR995855A/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)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
FR995855D 1948-11-22 1949-09-20 Chapeau de soutènement du toit, en particulier pour le soutènement dans les exploitations par tailles Expired FR995855A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE995855X 1948-11-22

Publications (1)

Publication Number Publication Date
FR995855A true FR995855A (fr) 1951-12-10

Family

ID=6918941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995855D Expired FR995855A (fr) 1948-11-22 1949-09-20 Chapeau de soutènement du toit, en particulier pour le soutènement dans les exploitations par tailles

Country Status (2)

Country Link
BE (1) BE493107A (enrdf_load_stackoverflow)
FR (1) FR995855A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE493107A (enrdf_load_stackoverflow)

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