FR1066401A - Wedge-shaped assembly device for rigid connection of extensions in mine support - Google Patents

Wedge-shaped assembly device for rigid connection of extensions in mine support

Info

Publication number
FR1066401A
FR1066401A FR1066401DA FR1066401A FR 1066401 A FR1066401 A FR 1066401A FR 1066401D A FR1066401D A FR 1066401DA FR 1066401 A FR1066401 A FR 1066401A
Authority
FR
France
Prior art keywords
extensions
wedge
assembly device
rigid connection
shaped assembly
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.)
Gutehoffnungshutte Oberhausen AG
Original Assignee
Gutehoffnungshutte Oberhausen AG
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 Gutehoffnungshutte Oberhausen AG filed Critical Gutehoffnungshutte Oberhausen AG
Application granted granted Critical
Publication of FR1066401A publication Critical patent/FR1066401A/en
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)
  • Emergency Lowering Means (AREA)
FR1066401D 1951-11-12 1952-11-10 Wedge-shaped assembly device for rigid connection of extensions in mine support Expired FR1066401A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE748081X 1951-11-12

Publications (1)

Publication Number Publication Date
FR1066401A true FR1066401A (en) 1954-06-04

Family

ID=6648781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1066401D Expired FR1066401A (en) 1951-11-12 1952-11-10 Wedge-shaped assembly device for rigid connection of extensions in mine support

Country Status (3)

Country Link
BE (1) BE515437A (en)
FR (1) FR1066401A (en)
GB (1) GB748081A (en)

Also Published As

Publication number Publication date
GB748081A (en) 1956-04-18
BE515437A (en)

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