FR1259995A - telescopic prop - Google Patents

telescopic prop

Info

Publication number
FR1259995A
FR1259995A FR772945A FR772945A FR1259995A FR 1259995 A FR1259995 A FR 1259995A FR 772945 A FR772945 A FR 772945A FR 772945 A FR772945 A FR 772945A FR 1259995 A FR1259995 A FR 1259995A
Authority
FR
France
Prior art keywords
telescopic prop
prop
telescopic
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
FR772945A
Other languages
French (fr)
Inventor
Nicolas-Joseph Rutigliano
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 FR772945A priority Critical patent/FR1259995A/en
Application granted granted Critical
Publication of FR1259995A publication Critical patent/FR1259995A/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
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • 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)
FR772945A 1958-08-22 1958-08-22 telescopic prop Expired FR1259995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR772945A FR1259995A (en) 1958-08-22 1958-08-22 telescopic prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR772945A FR1259995A (en) 1958-08-22 1958-08-22 telescopic prop

Publications (1)

Publication Number Publication Date
FR1259995A true FR1259995A (en) 1961-05-05

Family

ID=8707312

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772945A Expired FR1259995A (en) 1958-08-22 1958-08-22 telescopic prop

Country Status (1)

Country Link
FR (1) FR1259995A (en)

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