FR902093A - étançon métallique de mine - Google Patents

étançon métallique de mine

Info

Publication number
FR902093A
FR902093A FR902093DA FR902093A FR 902093 A FR902093 A FR 902093A FR 902093D A FR902093D A FR 902093DA FR 902093 A FR902093 A FR 902093A
Authority
FR
France
Prior art keywords
metal mine
mine prop
prop
metal
mine
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
Emile Pierre
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 FR902093A publication Critical patent/FR902093A/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

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)
FR902093D 1943-09-27 1943-09-27 étançon métallique de mine Expired FR902093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR902093T 1943-09-27

Publications (1)

Publication Number Publication Date
FR902093A true FR902093A (fr) 1945-08-17

Family

ID=9404088

Family Applications (1)

Application Number Title Priority Date Filing Date
FR902093D Expired FR902093A (fr) 1943-09-27 1943-09-27 étançon métallique de mine

Country Status (1)

Country Link
FR (1) FR902093A (fr)

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