FR1023348A - hydraulic or hydro-pneumatic prop for mine - Google Patents

hydraulic or hydro-pneumatic prop for mine

Info

Publication number
FR1023348A
FR1023348A FR1023348DA FR1023348A FR 1023348 A FR1023348 A FR 1023348A FR 1023348D A FR1023348D A FR 1023348DA FR 1023348 A FR1023348 A FR 1023348A
Authority
FR
France
Prior art keywords
prop
hydro
mine
pneumatic
hydraulic
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 FR1023348A publication Critical patent/FR1023348A/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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
FR1023348D 1949-07-13 1950-07-12 hydraulic or hydro-pneumatic prop for mine Expired FR1023348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1023348X 1949-07-13

Publications (1)

Publication Number Publication Date
FR1023348A true FR1023348A (en) 1953-03-17

Family

ID=7714790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1023348D Expired FR1023348A (en) 1949-07-13 1950-07-12 hydraulic or hydro-pneumatic prop for mine

Country Status (1)

Country Link
FR (1) FR1023348A (en)

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