FR54021E - mine prop - Google Patents

mine prop

Info

Publication number
FR54021E
FR54021E FR54021DA FR54021E FR 54021 E FR54021 E FR 54021E FR 54021D A FR54021D A FR 54021DA FR 54021 E FR54021 E FR 54021E
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
French (fr)
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.)
Sabes & Cie
Original Assignee
Sabes & Cie
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 Sabes & Cie filed Critical Sabes & Cie
Application granted granted Critical
Publication of FR54021E publication Critical patent/FR54021E/en
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
    • E21D15/285—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)
FR54021D 1945-07-23 1945-07-23 mine prop Expired FR54021E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR54021T 1945-07-23

Publications (1)

Publication Number Publication Date
FR54021E true FR54021E (en) 1947-03-27

Family

ID=8688484

Family Applications (1)

Application Number Title Priority Date Filing Date
FR54021D Expired FR54021E (en) 1945-07-23 1945-07-23 mine prop

Country Status (1)

Country Link
FR (1) FR54021E (en)

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