FR1133749A - étançon métallique en plusieurs éléments - Google Patents

étançon métallique en plusieurs éléments

Info

Publication number
FR1133749A
FR1133749A FR1133749DA FR1133749A FR 1133749 A FR1133749 A FR 1133749A FR 1133749D A FR1133749D A FR 1133749DA FR 1133749 A FR1133749 A FR 1133749A
Authority
FR
France
Prior art keywords
several parts
metal prop
prop
metal
several
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)
Inventor
Ludwig Vanwersch
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 FR1133749A publication Critical patent/FR1133749A/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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
FR1133749D 1955-10-25 1955-10-25 étançon métallique en plusieurs éléments Expired FR1133749A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1133749T 1955-10-25

Publications (1)

Publication Number Publication Date
FR1133749A true FR1133749A (fr) 1957-04-01

Family

ID=9639057

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1133749D Expired FR1133749A (fr) 1955-10-25 1955-10-25 étançon métallique en plusieurs éléments

Country Status (1)

Country Link
FR (1) FR1133749A (fr)

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