FR1109590A - Nouvel étançon - Google Patents

Nouvel étançon

Info

Publication number
FR1109590A
FR1109590A FR1109590DA FR1109590A FR 1109590 A FR1109590 A FR 1109590A FR 1109590D A FR1109590D A FR 1109590DA FR 1109590 A FR1109590 A FR 1109590A
Authority
FR
France
Prior art keywords
new prop
prop
new
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
Aron Touzoul
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 FR1109590A publication Critical patent/FR1109590A/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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
    • E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid

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)
FR1109590D 1954-08-03 1954-08-03 Nouvel étançon Expired FR1109590A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1109590T 1954-08-03

Publications (1)

Publication Number Publication Date
FR1109590A true FR1109590A (fr) 1956-01-31

Family

ID=9625701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1109590D Expired FR1109590A (fr) 1954-08-03 1954-08-03 Nouvel étançon

Country Status (1)

Country Link
FR (1) FR1109590A (fr)

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