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FR1266885A - étançon hydraulique - Google Patents

étançon hydraulique

Info

Publication number
FR1266885A
FR1266885A FR837879A FR837879A FR1266885A FR 1266885 A FR1266885 A FR 1266885A FR 837879 A FR837879 A FR 837879A FR 837879 A FR837879 A FR 837879A FR 1266885 A FR1266885 A FR 1266885A
Authority
FR
France
Prior art keywords
hydraulic prop
prop
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
FR837879A
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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
Priority claimed from GB3064359A external-priority patent/GB904795A/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR837879A priority Critical patent/FR1266885A/fr
Application granted granted Critical
Publication of FR1266885A publication Critical patent/FR1266885A/fr
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)
FR837879A 1959-09-08 1960-09-06 étançon hydraulique Expired FR1266885A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR837879A FR1266885A (fr) 1959-09-08 1960-09-06 étançon hydraulique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3064359A GB904795A (en) 1959-09-08 1959-09-08 Improvements relating to hydraulic pit props
FR837879A FR1266885A (fr) 1959-09-08 1960-09-06 étançon hydraulique

Publications (1)

Publication Number Publication Date
FR1266885A true FR1266885A (fr) 1961-07-17

Family

ID=26187373

Family Applications (1)

Application Number Title Priority Date Filing Date
FR837879A Expired FR1266885A (fr) 1959-09-08 1960-09-06 étançon hydraulique

Country Status (1)

Country Link
FR (1) FR1266885A (fr)

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