FR1120297A - étançon de mine - Google Patents

étançon de mine

Info

Publication number
FR1120297A
FR1120297A FR1120297DA FR1120297A FR 1120297 A FR1120297 A FR 1120297A FR 1120297D A FR1120297D A FR 1120297DA FR 1120297 A FR1120297 A FR 1120297A
Authority
FR
France
Prior art keywords
mine prop
prop
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LE PROGRES CHARBONNIER
Original Assignee
LE PROGRES CHARBONNIER
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 by LE PROGRES CHARBONNIER filed Critical LE PROGRES CHARBONNIER
Application granted granted Critical
Publication of FR1120297A publication Critical patent/FR1120297A/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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of 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
    • E21D15/38—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

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)
FR1120297D 1954-03-06 1955-03-04 étançon de mine Expired FR1120297A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1120297X 1954-03-06

Publications (1)

Publication Number Publication Date
FR1120297A true FR1120297A (fr) 1956-07-03

Family

ID=3893572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1120297D Expired FR1120297A (fr) 1954-03-06 1955-03-04 étançon de mine

Country Status (1)

Country Link
FR (1) FR1120297A (fr)

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