FR1244393A - Safety device for controlling a hydraulic mine prop - Google Patents

Safety device for controlling a hydraulic mine prop

Info

Publication number
FR1244393A
FR1244393A FR805130A FR805130A FR1244393A FR 1244393 A FR1244393 A FR 1244393A FR 805130 A FR805130 A FR 805130A FR 805130 A FR805130 A FR 805130A FR 1244393 A FR1244393 A FR 1244393A
Authority
FR
France
Prior art keywords
controlling
safety device
mine prop
hydraulic mine
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
FR805130A
Other languages
French (fr)
Inventor
Edmond-Emile Faubeau
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 filed Critical
Priority to FR805130A priority Critical patent/FR1244393A/en
Application granted granted Critical
Publication of FR1244393A publication Critical patent/FR1244393A/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
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves

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)
FR805130A 1959-09-15 1959-09-15 Safety device for controlling a hydraulic mine prop Expired FR1244393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR805130A FR1244393A (en) 1959-09-15 1959-09-15 Safety device for controlling a hydraulic mine prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR805130A FR1244393A (en) 1959-09-15 1959-09-15 Safety device for controlling a hydraulic mine prop

Publications (1)

Publication Number Publication Date
FR1244393A true FR1244393A (en) 1960-10-28

Family

ID=8719161

Family Applications (1)

Application Number Title Priority Date Filing Date
FR805130A Expired FR1244393A (en) 1959-09-15 1959-09-15 Safety device for controlling a hydraulic mine prop

Country Status (1)

Country Link
FR (1) FR1244393A (en)

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