FR66626E - Polygonal or arcuate support for mining operations - Google Patents

Polygonal or arcuate support for mining operations

Info

Publication number
FR66626E
FR66626E FR66626DA FR66626E FR 66626 E FR66626 E FR 66626E FR 66626D A FR66626D A FR 66626DA FR 66626 E FR66626 E FR 66626E
Authority
FR
France
Prior art keywords
polygonal
mining operations
arcuate support
arcuate
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
French (fr)
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.)
F W MOLL SOHNE MASCHINENFABRIK
Original Assignee
F W MOLL SOHNE MASCHINENFABRIK
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 F W MOLL SOHNE MASCHINENFABRIK filed Critical F W MOLL SOHNE MASCHINENFABRIK
Application granted granted Critical
Publication of FR66626E publication Critical patent/FR66626E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/24—Knuckle joints or links between arch members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR66626D 1949-06-24 1949-06-24 Polygonal or arcuate support for mining operations Expired FR66626E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR66626T 1949-06-24

Publications (1)

Publication Number Publication Date
FR66626E true FR66626E (en) 1957-06-18

Family

ID=8698937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR66626D Expired FR66626E (en) 1949-06-24 1949-06-24 Polygonal or arcuate support for mining operations

Country Status (1)

Country Link
FR (1) FR66626E (en)

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