FR1103840A - Vérin et dispositif de tension hydrauliques - Google Patents

Vérin et dispositif de tension hydrauliques

Info

Publication number
FR1103840A
FR1103840A FR1103840DA FR1103840A FR 1103840 A FR1103840 A FR 1103840A FR 1103840D A FR1103840D A FR 1103840DA FR 1103840 A FR1103840 A FR 1103840A
Authority
FR
France
Prior art keywords
hydraulic cylinder
tensioning device
tensioning
hydraulic
cylinder
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
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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
Application filed by Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of FR1103840A publication Critical patent/FR1103840A/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
    • E21D15/60—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)
FR1103840D 1954-07-06 1954-07-06 Vérin et dispositif de tension hydrauliques Expired FR1103840A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103840T 1954-07-06

Publications (1)

Publication Number Publication Date
FR1103840A true FR1103840A (fr) 1955-11-07

Family

ID=9622420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1103840D Expired FR1103840A (fr) 1954-07-06 1954-07-06 Vérin et dispositif de tension hydrauliques

Country Status (1)

Country Link
FR (1) FR1103840A (fr)

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