FR979545A - étançon de mines élastique à plusieurs parties - Google Patents

étançon de mines élastique à plusieurs parties

Info

Publication number
FR979545A
FR979545A FR979545DA FR979545A FR 979545 A FR979545 A FR 979545A FR 979545D A FR979545D A FR 979545DA FR 979545 A FR979545 A FR 979545A
Authority
FR
France
Prior art keywords
part elastic
mine prop
prop
mine
elastic
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 FR979545A publication Critical patent/FR979545A/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
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
    • 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
    • E21D15/56—Details of locks of telescopic props

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)
FR979545D 1948-05-04 1948-05-04 étançon de mines élastique à plusieurs parties Expired FR979545A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR979545T 1948-05-04

Publications (1)

Publication Number Publication Date
FR979545A true FR979545A (fr) 1951-04-27

Family

ID=9521232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR979545D Expired FR979545A (fr) 1948-05-04 1948-05-04 étançon de mines élastique à plusieurs parties

Country Status (1)

Country Link
FR (1) FR979545A (fr)

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