FR1074926A - Articulated extensions - Google Patents

Articulated extensions

Info

Publication number
FR1074926A
FR1074926A FR1074926DA FR1074926A FR 1074926 A FR1074926 A FR 1074926A FR 1074926D A FR1074926D A FR 1074926DA FR 1074926 A FR1074926 A FR 1074926A
Authority
FR
France
Prior art keywords
articulated extensions
extensions
articulated
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.)
EQUIP MINIER SOC D
Original Assignee
EQUIP MINIER SOC D
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 EQUIP MINIER SOC D filed Critical EQUIP MINIER SOC D
Application granted granted Critical
Publication of FR1074926A publication Critical patent/FR1074926A/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)
FR1074926D 1953-02-18 1953-02-18 Articulated extensions Expired FR1074926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1074926T 1953-02-18

Publications (1)

Publication Number Publication Date
FR1074926A true FR1074926A (en) 1954-10-11

Family

ID=9606835

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1074926D Expired FR1074926A (en) 1953-02-18 1953-02-18 Articulated extensions

Country Status (1)

Country Link
FR (1) FR1074926A (en)

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