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FR1020062A - Improvements made to mine props - Google Patents

Improvements made to mine props

Info

Publication number
FR1020062A
FR1020062A FR1020062DA FR1020062A FR 1020062 A FR1020062 A FR 1020062A FR 1020062D A FR1020062D A FR 1020062DA FR 1020062 A FR1020062 A FR 1020062A
Authority
FR
France
Prior art keywords
improvements made
mine props
props
mine
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau GmbH
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 Becorit Grubenausbau GmbH filed Critical Becorit Grubenausbau GmbH
Application granted granted Critical
Publication of FR1020062A publication Critical patent/FR1020062A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1020062D 1949-06-25 1950-06-12 Improvements made to mine props Expired FR1020062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1020062X 1949-06-25

Publications (1)

Publication Number Publication Date
FR1020062A true FR1020062A (en) 1953-02-02

Family

ID=7711788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1020062D Expired FR1020062A (en) 1949-06-25 1950-06-12 Improvements made to mine props

Country Status (1)

Country Link
FR (1) FR1020062A (en)

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