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FR1068545A - Perfectionnements apportés aux étançons de mines - Google Patents

Perfectionnements apportés aux étançons de mines

Info

Publication number
FR1068545A
FR1068545A FR1068545DA FR1068545A FR 1068545 A FR1068545 A FR 1068545A FR 1068545D A FR1068545D A FR 1068545DA FR 1068545 A FR1068545 A FR 1068545A
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
English (en)
Inventor
Arnold Haarmann
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 FR1068545A publication Critical patent/FR1068545A/fr
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/28Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40Collar 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)
FR1068545D 1951-12-31 1952-12-23 Perfectionnements apportés aux étançons de mines Expired FR1068545A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1068545X 1951-12-31

Publications (1)

Publication Number Publication Date
FR1068545A true FR1068545A (fr) 1954-06-25

Family

ID=7719422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1068545D Expired FR1068545A (fr) 1951-12-31 1952-12-23 Perfectionnements apportés aux étançons de mines

Country Status (1)

Country Link
FR (1) FR1068545A (fr)

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