FR87064E - Improvements to hydraulic props for mines - Google Patents

Improvements to hydraulic props for mines

Info

Publication number
FR87064E
FR87064E FR993822A FR993822A FR87064E FR 87064 E FR87064 E FR 87064E FR 993822 A FR993822 A FR 993822A FR 993822 A FR993822 A FR 993822A FR 87064 E FR87064 E FR 87064E
Authority
FR
France
Prior art keywords
mines
hydraulic props
props
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
FR993822A
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.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co 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 Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Priority to FR993822A priority Critical patent/FR87064E/en
Application granted granted Critical
Publication of FR87064E publication Critical patent/FR87064E/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)
FR993822A 1964-11-04 1964-11-04 Improvements to hydraulic props for mines Expired FR87064E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR993822A FR87064E (en) 1964-11-04 1964-11-04 Improvements to hydraulic props for mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR993822A FR87064E (en) 1964-11-04 1964-11-04 Improvements to hydraulic props for mines

Publications (1)

Publication Number Publication Date
FR87064E true FR87064E (en) 1966-06-03

Family

ID=8841777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR993822A Expired FR87064E (en) 1964-11-04 1964-11-04 Improvements to hydraulic props for mines

Country Status (1)

Country Link
FR (1) FR87064E (en)

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