FR64350E - telescopic prop - Google Patents

telescopic prop

Info

Publication number
FR64350E
FR64350E FR64350DA FR64350E FR 64350 E FR64350 E FR 64350E FR 64350D A FR64350D A FR 64350DA FR 64350 E FR64350 E FR 64350E
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
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
Application granted granted Critical
Publication of FR64350E publication Critical patent/FR64350E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/08—Lining with building materials with preformed concrete slabs
    • 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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
FR64350D 1953-09-25 1953-09-25 telescopic prop Expired FR64350E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR64350T 1953-09-25

Publications (1)

Publication Number Publication Date
FR64350E true FR64350E (en) 1955-11-09

Family

ID=8697434

Family Applications (1)

Application Number Title Priority Date Filing Date
FR64350D Expired FR64350E (en) 1953-09-25 1953-09-25 telescopic prop

Country Status (1)

Country Link
FR (1) FR64350E (en)

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