FR1054301A - étançon de mine en deux éléments - Google Patents

étançon de mine en deux éléments

Info

Publication number
FR1054301A
FR1054301A FR1054301DA FR1054301A FR 1054301 A FR1054301 A FR 1054301A FR 1054301D A FR1054301D A FR 1054301DA FR 1054301 A FR1054301 A FR 1054301A
Authority
FR
France
Prior art keywords
mine prop
piece
piece mine
prop
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)
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.)
SCHWARZ KG HERMANN
Hermann Schwarz KG
Original Assignee
SCHWARZ KG HERMANN
Hermann Schwarz KG
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 SCHWARZ KG HERMANN, Hermann Schwarz KG filed Critical SCHWARZ KG HERMANN
Application granted granted Critical
Publication of FR1054301A publication Critical patent/FR1054301A/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
    • E21D15/16Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/24Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
    • E21D15/26Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism with screw, worm, or the like, not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure

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)
FR1054301D 1951-01-05 1951-12-31 étançon de mine en deux éléments Expired FR1054301A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1054301X 1951-01-05

Publications (1)

Publication Number Publication Date
FR1054301A true FR1054301A (fr) 1954-02-09

Family

ID=7717804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1054301D Expired FR1054301A (fr) 1951-01-05 1951-12-31 étançon de mine en deux éléments

Country Status (1)

Country Link
FR (1) FR1054301A (fr)

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