FR1390275A - Hydraulic locking device for mine props - Google Patents

Hydraulic locking device for mine props

Info

Publication number
FR1390275A
FR1390275A FR958844A FR958844A FR1390275A FR 1390275 A FR1390275 A FR 1390275A FR 958844 A FR958844 A FR 958844A FR 958844 A FR958844 A FR 958844A FR 1390275 A FR1390275 A FR 1390275A
Authority
FR
France
Prior art keywords
locking device
hydraulic locking
mine props
props
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
FR958844A
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.)
MASCHB DR ALEXANDER SCHMIDT FA
Original Assignee
MASCHB DR ALEXANDER SCHMIDT FA
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 MASCHB DR ALEXANDER SCHMIDT FA filed Critical MASCHB DR ALEXANDER SCHMIDT FA
Priority to FR958844A priority Critical patent/FR1390275A/en
Application granted granted Critical
Publication of FR1390275A publication Critical patent/FR1390275A/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
    • E21D15/60—Devices for withdrawing props or chocks
    • E21D15/603—Devices for withdrawing props or chocks by means of hydraulic devices

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)
FR958844A 1963-12-30 1963-12-30 Hydraulic locking device for mine props Expired FR1390275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR958844A FR1390275A (en) 1963-12-30 1963-12-30 Hydraulic locking device for mine props

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR958844A FR1390275A (en) 1963-12-30 1963-12-30 Hydraulic locking device for mine props

Publications (1)

Publication Number Publication Date
FR1390275A true FR1390275A (en) 1965-02-26

Family

ID=8819933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR958844A Expired FR1390275A (en) 1963-12-30 1963-12-30 Hydraulic locking device for mine props

Country Status (1)

Country Link
FR (1) FR1390275A (en)

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